Editors Bio Section -- Preface -- Acknowledgments -- 1 Thermoelectric Power Generators and Their Applications 1 Jianxu Shi and Ke Wang -- 1.1 Introduction -- 1.2 Principles of Thermoelectric Conversion -- 1.2.1 Seebeck Effect -- 1.2.2 Peltier Effect -- 1.2.3 Thomson Effect -- 1.2.4 Evaluation Indicators for Thermoelectric Materials and Devices -- 1.3 Thermoelectric Materials -- 1.3.1 Traditional Thermoelectric Materials -- 1.3.2 Half-Heusler Alloys -- 1.3.3 2D Thermoelectric Materials -- 1.3.4 Thermoelectric Liquid Materials -- 1.4 Preparation of Thermoelectric Materials -- 1.5 Thermoelectric Devices and Their Applications -- 1.5.1 Conventional Devices -- 1.5.2 Miniature Devices -- 1.5.3 Flexible Devices -- 1.6 Conclusions and Outlook -- Acknowledgment -- References -- 2 Application of Nanomaterials in Organic Solar Cells 27 Tongsiliu Wu -- 2.1 Introduction -- 2.1.1 Background -- 2.1.2 Mechanisms and Structure of OSCs -- 2.1.3 Advantages of Adding Nanomaterials -- 2.2 Application of Carbon Materials in OSCs -- 2.2.1 Allotropes of Carbon Materials -- 2.2.2 Carbon Nanotubes -- 2.2.3 Graphene -- 2.2.4 Fullerene Receptors and Non-fullerene Receptors -- 2.3 Application of Silver Nanowire-based Nanoarrays in OSCs -- 2.3.1 Influence of Nanomicrostructure -- 2.3.2 Silver Nanowires -- 2.4 Emerging Trends and Future Outlook -- 2.5 Conclusions -- References -- 3 Advances in Low-temperature Na-ion Battery Energy Storage 55 Meng Li, Kuan Wang, Qihang Jing, Xuan Yang, Chenxiang Li, Zhou Liao, Dongsheng Geng, and Biwei Xiao -- 3.1 Introduction -- 3.2 LT NIB Cathode Materials -- 3.2.1 Polyanion -- 3.2.2 Layered TMO -- 3.2.3 Prussian Blue and Its Analogues -- 3.3 LT NIB Anode Materials -- 3.3.1 Interleaved Reaction Storage Na Negative Electrode -- 3.3.2 Alloyed Na Storage Anode -- 3.3.3 Transformation-type Na Storage Negative Electrode -- 3.4 LT Organic Electrolyte Research -- 3.4.1 LT Solvent Exploration -- 3.4.2 Selection of Electrolyte Salts -- 3.4.3 Electrolyte Additives -- 3.5 Summary and Outlook -- References -- 4 Thermochemical Energy Storage for Renewable Solar Energy Utilization 89 Ruolan Hu, Lihui Zhang, Wei Deng, Bo Tong, and Yong Zhao -- 4.1 Introduction -- 4.2 Materials/Chemical Reactions and Systems for TCES Technology -- 4.2.1 Gas-Gas TCES Materials/Reactions and Systems -- 4.2.1.1 Organics Reforming, Decomposition and Gasification -- 4.2.1.2 Ammonia Synthesis/Dissociation -- 4.2.1.3 Sulfur-based Reactions -- 4.2.2 Solid-Gas TCES Materials/Reactions and Systems -- 4.2.2.1 Carbonates Calcination/Carbonation -- 4.2.2.2 Hydroxides Dehydration/Hydration -- 4.2.2.3 Metal Hydrides Dehydrogenation/Hydrogenation -- 4.2.2.4 Metal Oxides Oxidation/Reduction -- 4.2.3 Liquid-Gas TCES Materials/Reactions and Systems -- 4.2.3.1 Isopropanol Dehydrogenation/Hydrogenation -- 4.2.3.2 Ammonium Hydrogen Sulfate Synthesis/Dissociation -- 4.3 Solar Receivers/Reactors for TCES Systems -- 4.3.1 Gas-Gas TCES Receivers/Reactors -- 4.3.1.1 Solar Methane Reforming Receivers/Reactors -- 4.3.1.2 Solar Methane Decomposition Receivers/Reactors -- 4.3.1.3 Solar Ammonia Dissociation/Synthesis Receivers/Reactors -- 4.3.1.4 Solar Sulfur-based Cycle Receivers/Reactors -- 4.3.2 Solid-Gas TCES Receivers/Reactors -- 4.3.2.1 Fixed/Packed Bed Receivers/Reactors -- 4.3.2.2 Fluidized Bed Receivers/Reactors -- 4.3.2.3 Moving Bed Receivers/Reactors -- 4.4 Conclusion -- Acknowledgment -- Conflict of Interest -- References -- 5 Recent Progress in Triboelectric Nanogenerators and New Challenges 161 Rong Xue and Xiaojia Wei -- 5.1 Introduction -- 5.2 Recent Research on Potential Mechanism and Four Working Modes of Teng -- 5.2.1 Recent Research on Potential Mechanism -- 5.2.2 CS Mode -- 5.2.3 LS-Mode -- 5.2.4 SE-Mode -- 5.2.5 FT-mode -- 5.3 Conclusion -- Conflict of Interest -- References -- 6 Wind Turbine Blades in Wind Power Generation: Manufacturing, Recovery and Reuse 181 Zichun Feng, Chunbao Du, Bingjia Wang, Baoli Li, and Gang Zhang -- 6.1 Introduction -- 6.2 Recycling of Waste WTBs -- 6.2.1 Manufacturing of WTBs -- 6.2.2 Burial and Incineration -- 6.2.3 Physical Recovery Method -- 6.2.4 Chemical Recovery Methods -- 6.2.4.1 Supercritical Fluid Degradation Method -- 6.2.4.2 Solvent Dissolution Method -- 6.2.5 Thermal Recovery Methods -- 6.2.5.1 High Temperature Pyrolysis Recovery -- 6.2.5.2 Fluidized Bed Method -- 6.2.5.3 Microwave Pyrolysis Method -- 6.2.6 Electrochemical Recovery Treatment Method -- 6.2.7 Energy Recovery Method -- 6.3 Application Procedure for WTBs after Recycling -- 6.3.1 Local Post-cut Reuse -- 6.3.2 Reuse after Crushing -- 6.4 Future Direction of WTB Improvement -- Conflict of Interest -- References -- 7 Electrocatalysts for the Oxygen Reduction Reaction in Fuel Cells 205 Shichao Ding, Zhaoyuan Lyu, Yu Meng, Yuehe lin, and Jin-Cheng -- 7.1 Introduction -- 7.2 Classification -- 7.2.1 Proton Exchange Membrane Fuel Cells -- 7.2.2 Alkaline Fuel Cells -- 7.2.3 Solid Oxide Fuel Cells -- 7.3 Electrocatalysts -- 7.3.1 Noble Metal-Based Catalysts -- 7.3.1.1 Low Pt Catalysts -- 7.3.1.2 Pt-alloy with Carbon Support -- 7.3.2 Non-precious-metal Catalysts -- 7.3.2.1 Transition Metal Oxide-based Catalysts -- 7.3.2.2 Metal-N-C-based Catalysts -- 7.3.3 Non-metal-based Catalyst -- 7.3.3.1 N-doped Carbon-based Catalysts -- 7.3.3.2 Other Heteroatom-doped Catalysts -- 7.4 Future Outlook -- 7.5 Conclusion -- Acknowledgments -- Conflict of Interest -- References -- 8 Carbon Fiber in Renewable Energy Development 233 Guoqing Xu, Tong Li, Feixiang Wang, Zhiqiang Duan, and Yimin Jing -- 8.1 Introduction -- 8.2 Carbon Fiber Classification: Pitch-Based, Viscose Based, PAN Based -- 8.3 Application of Carbon Fiber -- 8.4 Application of Carbon Fiber in Wind Power -- 8.5 Application of Carbon Fiber in the Photovoltaic Industry -- 8.5.1 Heating Field -- 8.5.2 Photovoltaic Cell Carrier Board -- 8.6 Application of Carbon Fiber in the Hydrogen Production Industry -- 8.6.1 Hydrogen Fuel Cells -- 8.6.2 Application of Activated Carbon Fiber in Hydrogen Storage Technology -- 8.7 Redox Fluid Flow Batteries -- 8.8 Phase Change Energy Storage -- 8.9 Biofuel Cells -- 8.10 Emerging Trends and Future Outlook -- 8.11 Recycling of Carbon Fiber -- 8.12 Summary -- References -- 9 Sustainable Carbon Nanofluids of Petroleum Extraction 257 Chunbao Du and Yuan Cheng -- 9.1 Introduction -- 9.2 Carbon Nanofluids for EOR -- 9.2.1 Graphene-based Nanofluid -- 9.2.2 CNTs-based Nanofluid -- 9.2.3 GO-based Nanofluid -- 9.2.4 QDs-based Nanofluid -- 9.3 Influencing Factors of Carbon Nanofluids on EOR -- 9.4 Mechanisms -- 9.4.1 Wettability -- 9.4.2 Interfacial Tension -- 9.4.3 Separation Pressure -- 9.4.4 Mobility Ratio -- 9.5 Emerging Trends and Future Outlook -- 9.6 Conclusions -- Acknowledgment -- Conflict of Interest -- References -- 10 Carbon Dioxide Capture and Chemical Conversion into Fuels 283 Yanan Zhu -- 10.1 Introduction -- 10.2 CO2 Capture -- 10.2.1 Technologies for CO2 Capture -- 10.2.1.1 Pre-combustion Carbon Capture Technology -- 10.2.1.2 Oxy-fuel Combustion Carbon Capture Technology -- 10.2.1.3 Post-combustion Carbon Capture Technology -- 10.2.2 Materials for CO2 Capture -- 10.2.2.1 Porous Organic Polymers -- 10.2.2.2 Metal-organic Frameworks -- 10.2.2.3 Carbon Materials -- 10.3 Chemical Conversion of CO2 into Fuels -- 10.3.1 CO2 Conversion into Fuels by Catalytic Hydrogenation -- 10.3.2 CO2 Conversion into Fuels by Photocatalysis -- 10.3.3 CO2 Conversion into Fuels by Electrocatalysis -- 10.4 Conclusions -- Acknowledgment -- Conflict of Interest -- References -- Index.