Preface |
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xiii | |
1 Flexible All-Solid-State Supercapacitors and Micro-Pattern Supercapacitors |
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1 | (36) |
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1 | (3) |
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1.2 Potential Components and Device Architecture for Flexible Supercapacitors |
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4 | (6) |
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1.2.1 Flexible Electrode Materials |
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5 | (2) |
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5 | (1) |
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1.2.1.2 Conducting Polymers |
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6 | (1) |
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1.2.1.3 Composite Materials |
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7 | (1) |
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1.2.2 Solid-State Electrolytes |
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7 | (1) |
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1.2.3 Device Architecture of Flexible Supercapacitor |
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8 | (2) |
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1.3 Flexible Supercapacitor Devices with Sandwiched Structures |
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10 | (8) |
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1.3.1 Freestanding Films Based Flexible Devices |
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10 | (4) |
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1.3.2 Flexible Substrate Supported Electrodes Based Devices |
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14 | (4) |
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1.4 Flexible Micro-Supercapacitor Devices with Interdigitated Architecture |
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18 | (9) |
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1.4.1 In situ Synthesis of Active Materials on Pre-Patterned Surfaces |
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18 | (3) |
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1.4.2 Direct Printing of Active Materials |
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21 | (3) |
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1.4.3 Patterning of Well-Developed Film Electrodes |
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24 | (3) |
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1.5 Performance Evaluation and Potential Application of Flexible Supercapacitors |
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27 | (5) |
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1.5.1 Performance Evaluation of Flexible Supercapacitors |
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28 | (1) |
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1.5.2 Integration of Flexible Supercapacitors |
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29 | (3) |
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1.6 Conclusions and Perspectives |
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32 | (1) |
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32 | (5) |
2 Fiber/Yarn-Based Flexible Supercapacitor |
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37 | (30) |
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37 | (3) |
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2.2 Supercapacitor with Intrinsic Conductive Fiber/Yarn |
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40 | (11) |
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2.2.1 Carbolic Fiber/Yarn-Based Supercapacitor |
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41 | (3) |
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2.2.2 Metallic Fiber/Yarn-Based Supercapacitor |
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44 | (4) |
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2.2.3 Hybrid Conductive Fiber/Yarn-Based Supercapacitor |
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48 | (3) |
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2.3 Supercapacitors with Intrinsic Nonconductive Fiber/Yarn |
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51 | (6) |
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2.3.1 Fiber/Yarn Modified by Carbon Materials |
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52 | (2) |
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2.3.2 Fiber/Yarn Modified by Metallic Materials |
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54 | (3) |
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2.4 Integrated Electronic Textiles |
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57 | (4) |
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2.5 Conclusion and Outlook |
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61 | (1) |
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62 | (5) |
3 Flexible Lithium Ion Batteries |
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67 | (30) |
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3.1 Overview of Lithium Ion Battery |
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67 | (6) |
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67 | (3) |
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70 | (1) |
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3.1.2.1 LiCoO2 with Layered Structure |
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70 | (1) |
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3.1.2.2 LiMn2O4 with a Spinel Structure |
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70 | (1) |
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3.1.2.3 LiFePO4 with an Olivine Structure |
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70 | (1) |
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71 | (1) |
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3.1.3.1 Carbonaceous Anodes |
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71 | (1) |
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3.1.3.2 Metal Alloy Anodes |
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71 | (1) |
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72 | (1) |
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3.2 Planar-Shaped Flexible Lithium Ion Batteries |
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73 | (14) |
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3.2.1 Bendable Planar Lithium Ion Batteries |
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73 | (11) |
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3.2.1.1 Bendable Carbon-Based Planar Lithium Ion Battery |
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73 | (4) |
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3.2.1.2 Thin Metal Material-Based Lithium Ion Battery |
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77 | (2) |
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3.2.1.3 Polymer-Based Lithium Ion Battery |
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79 | (3) |
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3.2.1.4 Special Structural Design-Based Flexible Lithium-Ion Battery |
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82 | (2) |
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3.2.2 Stretchable Planar Flexible Lithium Ion Batteries |
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84 | (3) |
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3.3 Fiber-Shaped Flexible Lithium Ion Batteries |
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87 | (7) |
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3.3.1 Bendable Fiber-Shaped Lithium Ion Battery |
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87 | (6) |
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3.3.2 Stretchable Fiber-Shaped Lithium Ion Battery |
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93 | (1) |
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94 | (1) |
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95 | (2) |
4 Flexible Sodium Ion Batteries: From Materials to Devices |
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97 | (30) |
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4.1 Introduction to Flexible Sodium Ion Batteries (SIBs) |
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97 | (1) |
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4.2 The Key Scientific Issues of Flexible SIBs |
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98 | (3) |
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4.2.1 Design of Advanced Active-Materials |
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99 | (1) |
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4.2.2 Design of Flexible Substrates and Electrodes |
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99 | (2) |
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4.2.3 Developing Novel Processing Technologies |
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101 | (1) |
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4.3 Design of Advanced Materials for Flexible SIBs |
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101 | (16) |
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4.3.1 Inorganic Anode Materials for Flexible SIBs |
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101 | (9) |
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4.3.2 Inorganic Cathode Materials for Flexible SIBs |
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110 | (4) |
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4.3.3 Organic Materials for Flexible SIBs |
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114 | (1) |
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4.3.4 Other Major Components for Flexible SIBs (Electrolyte, Separators, etc.) |
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115 | (2) |
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4.4 Design of Full Cell for Flexible SIBs |
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117 | (4) |
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121 | (2) |
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123 | (4) |
5 1D and 2D Flexible Carbon Matrix Materials for Lithium-Sulfur Batteries |
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127 | (28) |
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127 | (1) |
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5.2 The Working Mechanism and Challenges of Li-S Batteries |
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128 | (1) |
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5.3 Flexible Cathode Hosts for Lithium-Sulfur Batteries |
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129 | (9) |
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5.4 Electrolyte Membranes for Flexible Li-S Batteries |
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138 | (6) |
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5.4.1 Solid Polymer Electrolytes for Flexible Li-S Batteries |
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139 | (3) |
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5.4.2 Gel Polymer Electrolytes for Flexible Li-S Batteries |
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142 | (1) |
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5.4.3 Composite Polymer Electrolytes for Flexible Li-S Batteries |
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143 | (1) |
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5.5 Separator for Flexible Li-S Batteries |
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144 | (4) |
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148 | (1) |
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149 | (6) |
6 Flexible Electrodes for Lithium-Sulfur Batteries |
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155 | (28) |
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155 | (1) |
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6.2 Lithium-Sulfur Battery and Flexible Cathode |
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156 | (1) |
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6.2.1 Lithium-Sulfur Battery |
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156 | (1) |
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6.2.2 Flexible Cathode for Lithium-Sulfur Battery |
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156 | (1) |
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6.3 The Flexible Cathode of Lithium-Sulfur Battery |
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157 | (20) |
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6.3.1 Flexible Cathode Based on One-dimensional Materials |
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157 | (10) |
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6.3.1.1 Flexible Cathode Based on CNTs |
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157 | (6) |
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6.3.1.2 Flexible Cathode Based on Carbon Nanofibers |
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163 | (3) |
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6.3.1.3 Flexible Cathode Based on Polymer Fibers |
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166 | (1) |
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6.3.2 Flexible Cathode Based on Two-dimensional Materials |
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167 | (5) |
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6.3.2.1 Flexible Cathode Based on Graphene Paper |
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167 | (2) |
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6.3.2.2 Flexible Cathode Based on Graphene Foam |
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169 | (3) |
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6.3.3 Flexible Cathode Based on Three-dimensional Materials |
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172 | (12) |
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6.3.3.1 Flexible Cathode Based on Three-dimensional Carbon Foam Materials |
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172 | (2) |
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6.3.3.2 Flexible Cathode Based on Carbon/Binder Composites Materials |
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174 | (2) |
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6.3.3.3 Flexible Cathode Based on Three-dimensional Metal Materials |
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176 | (1) |
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177 | (1) |
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178 | (5) |
7 Flexible Lithium-Air Batteries |
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183 | (32) |
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7.1 Motivation for the Development of Flexible Lithium-Air Batteries |
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183 | (1) |
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7.2 State of the Art for Flexible Lithium-Air Batteries |
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184 | (22) |
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7.2.1 Overview of Flexible Energy Storage and Conversion Devices |
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184 | (1) |
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7.2.2 Overview of Flexible Lithium-Air Batteries |
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185 | (5) |
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7.2.2.1 Similarities Between Coin Cell/Swagelok Batteries with Flexible Battery |
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187 | (1) |
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7.2.2.2 Differences Between Coin Cell/Swagelok Batteries with Flexible Battery |
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188 | (2) |
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7.2.3 Current Status of Flexible Lithium-Air Battery |
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190 | (26) |
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190 | (9) |
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7.2.3.2 Cable-type Battery |
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199 | (3) |
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7.2.3.3 Woven-type Battery Pack |
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202 | (1) |
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7.2.3.4 Battery Array Pack |
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203 | (3) |
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7.3 Challenges and Future Work on Flexible Lithium-Air Batteries |
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206 | (1) |
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207 | (1) |
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208 | (7) |
8 Nanodielectric Elastomers for Flexible Generators |
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215 | (24) |
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215 | (1) |
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8.2 Electro-Mechanical Principles |
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216 | (2) |
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8.2.1 Electro-Mechanical Conversion |
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216 | (1) |
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8.2.2 Equations of DE Generators |
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217 | (1) |
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8.3 Increasing the Performance of Dielectric Elastomers from the Materials Perspective |
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218 | (9) |
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8.3.1 Increasing the Relative Permittivity of DEs |
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219 | (6) |
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8.3.1.1 Elastomer Composites |
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219 | (3) |
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222 | (1) |
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8.3.1.3 Chemical Modification |
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223 | (2) |
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8.3.2 Decreasing Young's Modulus |
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225 | (1) |
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8.3.3 Complex Network Structure |
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225 | (2) |
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8.4 Circuits and Electro-Mechanical Coupling Methods |
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227 | (3) |
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8.5 Examples of Dielectric Elastomer Generators |
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230 | (1) |
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8.6 Conclusion and Outlook |
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231 | (1) |
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232 | (1) |
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232 | (7) |
9 Flexible Dye-Sensitized Solar Cells |
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239 | (44) |
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239 | (3) |
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9.2 Materials and Fabrication of Electrodes for FDSCs |
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242 | (12) |
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242 | (9) |
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9.2.1.1 Flexible Substrate for Photo-electrode |
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242 | (1) |
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9.2.1.2 Nanostructured-photoactive Film |
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243 | (6) |
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249 | (2) |
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251 | (3) |
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9.3 Sensitizers in FDSCs and Thin Photoactive Film DSCs |
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254 | (16) |
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9.3.1 State-of-the-Art Review of Sensitizers in FDSCs |
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254 | (4) |
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9.3.2 Sensitizers in Thin Photoactive Film DSCs |
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258 | (12) |
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9.4 Electrolyte and Hole-Transporting Materials for FDSCs |
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270 | (6) |
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9.5 Conclusion and Outlook |
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276 | (2) |
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278 | (5) |
10 Self-assembly in Fabrication of Semitransparent and Meso-Planar Hybrid Perovskite Photovoltaic Devices |
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283 | (22) |
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283 | (19) |
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10.1.1 Semitransparent Perovskite Solar Cells Through Self-assembly of Perovskite in One Step |
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285 | (7) |
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10.1.1.1 Cell Architecture and Morphology |
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286 | (2) |
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10.1.1.2 Transparency and Photovoltaic Performance of the Cells |
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288 | (3) |
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10.1.1.3 Recombination Behavior of the Charges in Cells |
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291 | (1) |
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10.1.2 Mesoporous-Planar Hybrid Perovskite Devices Through Mesh-assisted Self-assembly of Mesoporous-TiO2 |
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292 | (13) |
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10.1.2.1 Cell Architecture and Morphology |
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293 | (4) |
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10.1.2.2 Photovoltaic Performance of the Solar Cells |
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297 | (3) |
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10.1.2.3 Study of Recombination Behavior Through Charge Extraction |
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300 | (2) |
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10.2 Summary and Future Perspective |
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302 | (1) |
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302 | (3) |
11 Flexible Organic Solar Cells |
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305 | (34) |
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305 | (3) |
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306 | (1) |
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11.1.2 Performance Characterization of OSCs |
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307 | (1) |
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308 | (1) |
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11.1.3.1 Conventional Device Structure |
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308 | (1) |
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11.1.3.2 Inverted Device Structure |
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308 | (1) |
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308 | (9) |
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310 | (3) |
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11.2.1.1 Poly(Phenylenevinylene) (PPV) and Polythiophene (PT) Derivatives |
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310 | (1) |
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11.2.1.2 D-A Conjugated Polymers |
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311 | (2) |
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11.2.2 Acceptor Materials |
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313 | (4) |
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11.2.2.1 Fullerene Derivatives |
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313 | (2) |
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11.2.2.2 Non-fullerene Acceptors |
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315 | (2) |
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317 | (3) |
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11.3.1 Conductive Polymer (PEDOT:PSS) |
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317 | (1) |
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11.3.2 Metal Nanowires and Grids |
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318 | (1) |
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11.3.3 Hybrid Carbon Material |
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319 | (1) |
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320 | (1) |
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11.4.1 Hole Transporting Layer (HTL) |
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320 | (1) |
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11.4.2 Electron Transporting Layer (ETL) |
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320 | (1) |
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11.5 Tandem Organic Solar Cells |
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321 | (5) |
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11.5.1 Interconnecting Layer |
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322 | (2) |
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11.5.2 Low Bandgap Polymer Sub-cell |
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324 | (2) |
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11.6 Fabrication Technology for Flexible Organic Solar Cells |
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326 | (2) |
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328 | (1) |
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329 | (10) |
12 Flexible Quantum Dot Sensitized Solar Cells |
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339 | (44) |
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339 | (1) |
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340 | (7) |
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12.2.1 Quantum Dots (QDs) |
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340 | (4) |
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12.2.1.1 Quantum Size Effect |
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341 | (1) |
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12.2.1.2 Multiple Exciton Generation |
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341 | (1) |
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12.2.1.3 Ultrafast Electron Transfer |
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342 | (1) |
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12.2.1.4 Large Specific Surface Area |
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343 | (1) |
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12.2.2 Quantum Dots Sensitized Solar Cells (QDSSCs) |
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344 | (3) |
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12.2.2.1 Schematic of the Structure and Charge Circulation of QDSSCs |
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344 | (1) |
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12.2.2.2 Evaluation of the Photovoltaic Performances of QDSSCs |
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345 | (2) |
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12.3 Development of the Flexible QDSSCs |
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347 | (23) |
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12.3.1 Choosing of the Types of QDs |
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347 | (3) |
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347 | (1) |
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348 | (1) |
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349 | (1) |
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12.3.2 Fabrication of the Flexible Photo-anode Films |
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350 | (1) |
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12.3.3 TiO2-Based Photo-anodes |
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351 | (3) |
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12.3.3.1 Photo-anodes of TiO2 Nanoparticles |
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351 | (1) |
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12.3.3.2 Photo-anodes of TiO2 Nanoarray Structures |
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352 | (2) |
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12.3.3.3 Designing of Novel TiO2 Architecture as Photo-anodes |
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354 | (1) |
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12.3.4 ZnO based Photo-anodes |
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354 | (1) |
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12.3.5 Other Metal Oxide Based Photo-anodes |
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355 | (1) |
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12.3.6 Development of the Sensitization Method |
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355 | (5) |
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12.3.6.1 In situ Sensitization Techniques |
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356 | (2) |
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12.3.6.2 Ex situ Techniques |
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358 | (2) |
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12.3.6.3 Co-sensitization Techniques |
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360 | (1) |
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12.3.7 Interfacial Engineering in QDSSCs |
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360 | (3) |
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12.3.7.1 Surface Passivation by Large-bandgap Semiconductors |
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361 | (1) |
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12.3.7.2 Surface Passivation by Metal Oxides |
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361 | (1) |
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12.3.7.3 Surface Passivation by Molecular Dipoles |
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362 | (1) |
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12.3.7.4 Surface Passivation by Dye Molecules |
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362 | (1) |
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12.3.7.5 Surface Passivation by Molecular Relays |
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362 | (1) |
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12.3.7.6 Combined Interfacial Engineering Methods |
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363 | (1) |
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12.3.8 Optimization of the Counter Electrodes |
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363 | (20) |
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12.3.8.1 Noble Metal Counter Electrodes |
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365 | (1) |
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12.3.8.2 Carbon Counter Electrodes |
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365 | (1) |
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12.3.8.3 Metallic Compound Counter Electrodes |
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366 | (4) |
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12.3.8.4 Polymer Counter Electrodes |
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370 | (1) |
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12.4 Conclusion and Future Outlook |
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370 | (1) |
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371 | (1) |
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371 | (12) |
13 Flexible Triboelectric Nanogenerators |
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383 | (42) |
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383 | (4) |
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13.1.1 Motivation for the Development of Flexible Triboelectric Nanogenerators |
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383 | (2) |
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13.1.2 Basic Working Mechanism and Working Modes of Flexible Triboelectric Nanogenerators |
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385 | (2) |
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13.2 Materials Used for Flexible Triboelectric Nanogenerators |
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387 | (1) |
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13.3 Flexible Triboelectric Nanogenerators for Harvesting Ambient Energy |
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388 | (5) |
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13.3.1 Harvesting Biomechanical Energy |
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388 | (3) |
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13.3.2 Harvesting Wind Energy |
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391 | (1) |
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13.3.3 Harvesting Water Energy |
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392 | (1) |
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13.4 Flexible Triboelectric Nanogenerators for Self-Powered Sensors |
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393 | (12) |
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13.4.1 Self-Powered Touch/Pressure Sensors |
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393 | (4) |
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13.4.2 Self-Powered Motion Sensors |
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397 | (2) |
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13.4.2.1 Sensing Motion of Human Body |
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397 | (2) |
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13.4.2.2 Sensing Motion of Objects |
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399 | (1) |
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13.4.3 Self-Powered Acoustic Sensors |
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399 | (3) |
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13.4.4 Self-Powered Liquid/Gas Flow Sensors |
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402 | (3) |
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13.5 Flexible Triboelectric Nanogenerators for Self-Charging Power Units |
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405 | (4) |
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13.5.1 Self-Charging over a Period of Time to Power Electronics |
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406 | (1) |
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13.5.2 Sustainably Powering Electronics |
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406 | (3) |
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13.6 Flexible Triboelectric Nanogenerators for Hybrid Energy Cells |
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409 | (2) |
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13.7 Service Behavior of Triboelectric Nanogenerators |
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411 | (3) |
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13.8 Summary and Prospects |
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414 | (1) |
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415 | (10) |
14 Flexible Thermoelectric Materials and Devices |
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425 | (34) |
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425 | (1) |
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14.2 Thermoelectric Energy Conversion Basics |
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426 | (3) |
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14.3 Flexible Thermoelectric Materials |
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429 | (6) |
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14.3.1 Conducting Polymers |
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431 | (3) |
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14.3.2 Graphene and Carbon Nanotube Based TE Materials |
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434 | (1) |
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14.4 Flexible Thermoelectric Energy Harvesters |
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435 | (6) |
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439 | (1) |
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14.4.2 Architecture of Thermoelectric Modules |
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440 | (1) |
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14.5 Transverse TE Devices |
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441 | (5) |
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14.5.1 Simulations of Transverse TEG |
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444 | (2) |
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14.6 Thermoelectric Sensors |
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446 | (1) |
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447 | (1) |
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448 | (11) |
15 Carbon-based Electrocatalysts for Water-splitting |
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459 | (26) |
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459 | (1) |
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15.2 Nonmetal-doped Carbon for HER |
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460 | (6) |
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15.2.1 Nitrogen-doped Carbon-based Catalysts for HER |
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460 | (2) |
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15.2.2 Other Heteroatom (B, S)-doped Carbon-based Catalysts for HER |
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462 | (1) |
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15.2.3 Dual- or Treble-doped Carbons in Metal-free Catalysis |
|
|
463 | (1) |
|
15.2.4 Metal-doped Carbon for HER |
|
|
464 | (2) |
|
15.3 Metals Embedded in Carbon for HER |
|
|
466 | (8) |
|
15.3.1 Core-Shell Structure for Carbon Nanotube and Nanoparticle |
|
|
468 | (3) |
|
15.3.2 Metal Organic Frameworks for HER |
|
|
471 | (3) |
|
|
474 | (5) |
|
15.4.1 Overpotential/Onset Potential and Calibration |
|
|
474 | (1) |
|
15.4.2 Current Density and Electrochemical Surface Area |
|
|
475 | (1) |
|
15.4.3 Tafel Plot and Exchange Current Density |
|
|
476 | (1) |
|
15.4.4 Electrochemical Impedance |
|
|
476 | (1) |
|
15.4.5 HER Durability and H2 Production |
|
|
477 | (1) |
|
|
477 | (2) |
|
15.5 Outlook and Future Challenges |
|
|
479 | (1) |
|
15.5.1 HER Mechanism for Carbon-based Catalysts |
|
|
479 | (1) |
|
15.5.2 Electrochemistry, Especially for Activation Process |
|
|
480 | (1) |
|
15.5.3 OER in Acidic Electrolyte |
|
|
480 | (1) |
|
|
480 | (5) |
Index |
|
485 | |