Dr. Chien-Te Hsieh is Professor in the Department of Chemical Engineering and Materials Science at Yuan Ze University, Taiwan. His research focuses on nanomaterial synthesis using atomic layer deposition, microwave deposition, and infrared-assisted methods. He has published over 270 SCI papers and holds more than 40 patents.Dr. Pradeep Kumar Panda is Postdoctoral Researcher at Yuan Ze University, Taiwan. His research encompasses sustainable nanomaterials, electrochemical catalysts, energy devices, polymer science, and biomaterials. He contributes expertise in both experimental and applied aspects of materials for energy storage and conversion.Dr. Arpan Kumar Nayak is Assistant Professor at the Regional Institute of Education (NCERT), Mysuru, India. His research centers on the synthesis of nanostructured and carbon-based materials for environmental and energy applications. He has authored more than 110 peer-reviewed journal articles in the field of nanomaterials science.

• Preface xviiList of Abbreviations xix1 Overview of High-Entropy Materials for Energy Storage: Surface Chemistry and Its Functionality 1Mukarram Ali, Mohsin Saleem, Tahir Sattar, Muhammad Zubair Khan, Yoon-Cheol Ha, and Jung Hyuk Koh1.1 Introduction 11.2 Fundamental Principles in HEMs 31.3 Design and Synthesis of High-Entropy Materials for Energy Storage 51.4 High-Entropy Phase Stabilization and Structural Integrity 81.5 Compositional Engineering in High-Entropy Materials 121.6 High-Entropy Electrodes for Energy Storage 151.7 High-Entropy Electrolytes and Interface Engineering 181.8 Advanced Characterization Techniques for HEMs 201.9 Challenges, Prospects, and Commercialization Pathways 221.10 Summary and Outlook 241.11 Outlook 24Acknowledgment 26References 262 Perovskite-Based High-Entropy Materials for Energy Storage Applications 33Asfaq Ali, Sanjeev Verma, Pradeep Kumar Panda, and Tapas Das2.1 Introduction 332.2 Design Strategies and Entropy Engineering in HEPOs 342.3 Synthesis Techniques 392.4 Energy Storage Applications 422.5 Challenges and Future Prospects 552.6 Conclusions 56References 563 Functional 2D-Based High-Entropy Materials for Energy Storage Applications 63Asfaq Ali, Sanjeev Verma, Pradeep Kumar Panda, and Tapas Das3.1 Introduction 633.2 Structural Characteristics and Stabilization of 2D-Based HEMs 663.3 Structural Flexibility and Charge Transport in 2D HEMs 673.4 Classification and Synthesis of HEMs 683.5 Mechanisms of High-Entropy Structures 773.6 Applications of High-Entropy 2D Materials in Energy Storage 813.7 Conclusions 903.8 Future Scope 91References 914 Recent Advancements for High-Entropy Materials for the Dielectric Capacitor 101Sushree Sangita Swain, Subash Chandra Sahu, Arpan Kumar Nayak, and Rakesh K. Sahoo4.1 Introduction 1014.2 Processing Methods and Structural Characteristics of High-Entropy Materials (HEMs) 1034.3 Synthesis Techniques for High-Entropy Materials (HEMs) 1044.4 Defining High-Entropy Materials: Composition and Entropy Perspectives 1074.5 Recently Reported High-Entropy Material 1074.6 Potential of High-Entropy Materials (HEMs) in Dielectric Energy Storage Devices 1094.7 Application of High-Entropy Materials in Dielectric Energy Storage 1104.8 Unique Effects in HEAs and Their Influence on Properties 1134.9 Challenges in HEM Design for Dielectric Energy Storage 1154.10 Device-Level Challenges in Incorporating High-Entropy Materials (HEMs) 1164.11 Temperature-Dependent Conductivity Degradation in HEMs 1174.12 Dielectric Polarization Response to Temperature Fluctuations in HEMs 1184.13 Conclusion and Future Perspectives 120References 1215 Electrokinetics of High-Entropy Materials for Energy Storage Devices 129Yukti Setia, Nikita Bhatt, Sankeerthana Bellamkonda, and Malaya K. Sahoo5.1 Introduction 1295.2 Fundamentals of Electrokinetics in Energy Storage Devices 1305.3 Mechanistic Insights: Electrokinetics of HEMs in Energy Storage 1365.4 Conclusions and Perspectives 151References 1526 Importance of High-Entropy Materials for Energy Storage Applications 159Jala Bib Khan, Pradeep Kumar Panda, Pranjyan Dash, and Chien-Te Hsieh6.1 Introduction 1596.2 Fundamentals of High-Entropy Materials 1606.3 Synthesis 1626.4 Applications 1666.5 Challenges and Limitations 1756.6 Future Prospective 1786.7 Conclusions 179References 1797 Noble-Metal-Based High-Entropy Oxides for Energy Storage Applications 185Dibyananda Majhi, Shreeganesh Subraya Hegde, and Subrahmanyam Challapalli7.1 Introduction 1857.2 High-Entropy Oxides and Noble-Metal-Based High-Entropy Oxides 1867.3 Synthesis Methods for High-Entropy Oxides and Noble-Metal-Based High-Entropy Oxides 1897.4 Noble-Metal-Based High-Entropy Oxides for Energy Applications 1927.5 Current Challenges and Future Perspectives 2007.6 Conclusions 201Funding Statement 201Author Contributions 201Conflict of Interest 202References 2028 Noble-Metal-Free High-Entropy Oxides for Energy Storage Applications 209Biraj K. Satpathy8.1 Introduction 209References 2319 Noble Metal-Based High-Entropy Alloys for Energy Storage Applications 239Parul Devi9.1 Introduction 2399.2 Synthesis Methods 2439.3 Entropy Enhancement of HEAs 2499.4 Application of HEAs 2509.5 Summary and Outlook 254References 25610 Noble-Metal-Free High-Entropy Alloys for Energy Storage Applications 263Yukti Setia, Nikita Bhatt, Maneesh Kumar, and Malaya K. Sahoo10.1 Introduction 26310.2 Fundamentals of HEAs 26510.3 Applications of NMF-HEAs in Energy Storage Devices 26810.4 Conclusions and Perspectives 281Author Contributions 282References 28211 Metal-Free High-Entropy Materials for Energy Storage Applications 289Jnanranjan Panda, Dipanwita Das, Subhashree Mohanty, and Sumit Majumder11.1 Introduction 28911.2 Classification of HEMs 29211.3 Advanced Synthesis Methods of HEMs 29411.4 Characterization Techniques 29911.5 Application of HEMs in Energy Storage Systems 30011.6 Advantages and Challenges 30811.7 Conclusions 30911.8 Future Perspectives 310References 31012 Metal-Doped High-Entropy Materials for Energy Storage Applications 315Barkha Rani, Sourav Ghosh, A. Deepak, and M. Suresh Kumar12.1 Introduction 31512.2 Role of Doping in HEMs for Energy Storage 31812.3 Synthesis Methods of M-HEMs 31912.4 Advantages of M-HEMs in Energy Storage Applications 32512.5 Computational Modeling for M-HEM Development 33412.6 Conclusions and Future Perspectives 337References 33813 Noble Metal-Doped High-Entropy Materials for Energy Storage Applications 347Rajashree Sahoo, Saswat Mohapatra, Swagat Kumar Purohit, and Arpan Kumar Nayak13.1 Introduction 34713.2 Outline of the Applications of HEAs in Battery Fabrication 35013.3 Synthesis 35213.4 Summary and Future Scope 369References 36914 Morphology-Dependent High-Entropy Materials for Energy Storage Applications 377Pranshula Panigrahi, Manoj Kumar Mallick, and Akshaya Kumar Palai14.1 Introduction 37714.2 Advanced Synthesis Techniques for Morphology Control 38014.3 Characterization of Morphology and Properties 38314.4 Mechanisms Governing Morphology-Dependent Performance 38914.5 Potential Energy Storage Applications 39114.6 Challenges and Future Perspectives 39314.7 Conclusion 396References 39615 Industrial Aspects of High-Entropy Materials for Energy Storage Applications 401Chandan Kumar Panda, Subhashree Behera, Hyun-Suk Kim, and Jungseek Hwang15.1 Introduction 40115.2 Fundamentals of HEMs 40415.3 Characterization of HEMs 40715.4 Industrial Energy Storage Technologies Utilizing HEMs 41015.5 Manufacturing and Industrial Challenges in Energy Storage Applications 41515.6 Summary and Conclusions 420Acknowledgement 421References 42116 Current Status, Challenges, and Prospects of High-Entropy Materials 427Swagat Kumar Purohit, Abhaya Kumar Mishra, Deepak Kumar Pradhan, and Arpan Kumar Nayak16.1 Introduction 42716.2 Background 42816.3 Synthesis Method for HEMs 42916.4 Current Status of HEMs as the Electrode in Supercapacitors 43216.5 Current Status of HEMs as the Electrode in Lithium-Ion Batteries 43316.6 Current Status of HEMs as the Electrode in Dielectric Materials 43316.7 Challenges in Using HEMs as the Electrode in Supercapacitors 43516.8 Challenges in Using HEMs as the Electrode in Lithium-Ion Batteries 43516.9 Challenges in Using HEMs as the Raw Material for the Synthesis of Dielectric Materials 43616.10 Prospects of HEMs as the Electrode in Supercapacitors 43616.11 Prospects of HEMs as the Electrode in Lithium-Ion Batteries 43716.12 Prospects of HEMs in the Synthesis of Dielectric Materials 437References 438Index 445

Dr. Chien-Te Hsieh is Professor in the Department of Chemical Engineering and Materials Science at Yuan Ze University, Taiwan. His research focuses on nanomaterial synthesis using atomic layer deposition, microwave deposition, and infrared-assisted methods. He has published over 270 SCI papers and holds more than 40 patents.Dr. Pradeep Kumar Panda is Postdoctoral Researcher at Yuan Ze University, Taiwan. His research encompasses sustainable nanomaterials, electrochemical catalysts, energy devices, polymer science, and biomaterials. He contributes expertise in both experimental and applied aspects of materials for energy storage and conversion.Dr. Arpan Kumar Nayak is Assistant Professor at the Regional Institute of Education (NCERT), Mysuru, India. His research centers on the synthesis of nanostructured and carbon-based materials for environmental and energy applications. He has authored more than 110 peer-reviewed journal articles in the field of nanomaterials science.

• Preface xviiList of Abbreviations xix1 Overview of High-Entropy Materials for Energy Storage: Surface Chemistry and Its Functionality 1Mukarram Ali, Mohsin Saleem, Tahir Sattar, Muhammad Zubair Khan, Yoon-Cheol Ha, and Jung Hyuk Koh1.1 Introduction 11.2 Fundamental Principles in HEMs 31.3 Design and Synthesis of High-Entropy Materials for Energy Storage 51.4 High-Entropy Phase Stabilization and Structural Integrity 81.5 Compositional Engineering in High-Entropy Materials 121.6 High-Entropy Electrodes for Energy Storage 151.7 High-Entropy Electrolytes and Interface Engineering 181.8 Advanced Characterization Techniques for HEMs 201.9 Challenges, Prospects, and Commercialization Pathways 221.10 Summary and Outlook 241.11 Outlook 24Acknowledgment 26References 262 Perovskite-Based High-Entropy Materials for Energy Storage Applications 33Asfaq Ali, Sanjeev Verma, Pradeep Kumar Panda, and Tapas Das2.1 Introduction 332.2 Design Strategies and Entropy Engineering in HEPOs 342.3 Synthesis Techniques 392.4 Energy Storage Applications 422.5 Challenges and Future Prospects 552.6 Conclusions 56References 563 Functional 2D-Based High-Entropy Materials for Energy Storage Applications 63Asfaq Ali, Sanjeev Verma, Pradeep Kumar Panda, and Tapas Das3.1 Introduction 633.2 Structural Characteristics and Stabilization of 2D-Based HEMs 663.3 Structural Flexibility and Charge Transport in 2D HEMs 673.4 Classification and Synthesis of HEMs 683.5 Mechanisms of High-Entropy Structures 773.6 Applications of High-Entropy 2D Materials in Energy Storage 813.7 Conclusions 903.8 Future Scope 91References 914 Recent Advancements for High-Entropy Materials for the Dielectric Capacitor 101Sushree Sangita Swain, Subash Chandra Sahu, Arpan Kumar Nayak, and Rakesh K. Sahoo4.1 Introduction 1014.2 Processing Methods and Structural Characteristics of High-Entropy Materials (HEMs) 1034.3 Synthesis Techniques for High-Entropy Materials (HEMs) 1044.4 Defining High-Entropy Materials: Composition and Entropy Perspectives 1074.5 Recently Reported High-Entropy Material 1074.6 Potential of High-Entropy Materials (HEMs) in Dielectric Energy Storage Devices 1094.7 Application of High-Entropy Materials in Dielectric Energy Storage 1104.8 Unique Effects in HEAs and Their Influence on Properties 1134.9 Challenges in HEM Design for Dielectric Energy Storage 1154.10 Device-Level Challenges in Incorporating High-Entropy Materials (HEMs) 1164.11 Temperature-Dependent Conductivity Degradation in HEMs 1174.12 Dielectric Polarization Response to Temperature Fluctuations in HEMs 1184.13 Conclusion and Future Perspectives 120References 1215 Electrokinetics of High-Entropy Materials for Energy Storage Devices 129Yukti Setia, Nikita Bhatt, Sankeerthana Bellamkonda, and Malaya K. Sahoo5.1 Introduction 1295.2 Fundamentals of Electrokinetics in Energy Storage Devices 1305.3 Mechanistic Insights: Electrokinetics of HEMs in Energy Storage 1365.4 Conclusions and Perspectives 151References 1526 Importance of High-Entropy Materials for Energy Storage Applications 159Jala Bib Khan, Pradeep Kumar Panda, Pranjyan Dash, and Chien-Te Hsieh6.1 Introduction 1596.2 Fundamentals of High-Entropy Materials 1606.3 Synthesis 1626.4 Applications 1666.5 Challenges and Limitations 1756.6 Future Prospective 1786.7 Conclusions 179References 1797 Noble-Metal-Based High-Entropy Oxides for Energy Storage Applications 185Dibyananda Majhi, Shreeganesh Subraya Hegde, and Subrahmanyam Challapalli7.1 Introduction 1857.2 High-Entropy Oxides and Noble-Metal-Based High-Entropy Oxides 1867.3 Synthesis Methods for High-Entropy Oxides and Noble-Metal-Based High-Entropy Oxides 1897.4 Noble-Metal-Based High-Entropy Oxides for Energy Applications 1927.5 Current Challenges and Future Perspectives 2007.6 Conclusions 201Funding Statement 201Author Contributions 201Conflict of Interest 202References 2028 Noble-Metal-Free High-Entropy Oxides for Energy Storage Applications 209Biraj K. Satpathy8.1 Introduction 209References 2319 Noble Metal-Based High-Entropy Alloys for Energy Storage Applications 239Parul Devi9.1 Introduction 2399.2 Synthesis Methods 2439.3 Entropy Enhancement of HEAs 2499.4 Application of HEAs 2509.5 Summary and Outlook 254References 25610 Noble-Metal-Free High-Entropy Alloys for Energy Storage Applications 263Yukti Setia, Nikita Bhatt, Maneesh Kumar, and Malaya K. Sahoo10.1 Introduction 26310.2 Fundamentals of HEAs 26510.3 Applications of NMF-HEAs in Energy Storage Devices 26810.4 Conclusions and Perspectives 281Author Contributions 282References 28211 Metal-Free High-Entropy Materials for Energy Storage Applications 289Jnanranjan Panda, Dipanwita Das, Subhashree Mohanty, and Sumit Majumder11.1 Introduction 28911.2 Classification of HEMs 29211.3 Advanced Synthesis Methods of HEMs 29411.4 Characterization Techniques 29911.5 Application of HEMs in Energy Storage Systems 30011.6 Advantages and Challenges 30811.7 Conclusions 30911.8 Future Perspectives 310References 31012 Metal-Doped High-Entropy Materials for Energy Storage Applications 315Barkha Rani, Sourav Ghosh, A. Deepak, and M. Suresh Kumar12.1 Introduction 31512.2 Role of Doping in HEMs for Energy Storage 31812.3 Synthesis Methods of M-HEMs 31912.4 Advantages of M-HEMs in Energy Storage Applications 32512.5 Computational Modeling for M-HEM Development 33412.6 Conclusions and Future Perspectives 337References 33813 Noble Metal-Doped High-Entropy Materials for Energy Storage Applications 347Rajashree Sahoo, Saswat Mohapatra, Swagat Kumar Purohit, and Arpan Kumar Nayak13.1 Introduction 34713.2 Outline of the Applications of HEAs in Battery Fabrication 35013.3 Synthesis 35213.4 Summary and Future Scope 369References 36914 Morphology-Dependent High-Entropy Materials for Energy Storage Applications 377Pranshula Panigrahi, Manoj Kumar Mallick, and Akshaya Kumar Palai14.1 Introduction 37714.2 Advanced Synthesis Techniques for Morphology Control 38014.3 Characterization of Morphology and Properties 38314.4 Mechanisms Governing Morphology-Dependent Performance 38914.5 Potential Energy Storage Applications 39114.6 Challenges and Future Perspectives 39314.7 Conclusion 396References 39615 Industrial Aspects of High-Entropy Materials for Energy Storage Applications 401Chandan Kumar Panda, Subhashree Behera, Hyun-Suk Kim, and Jungseek Hwang15.1 Introduction 40115.2 Fundamentals of HEMs 40415.3 Characterization of HEMs 40715.4 Industrial Energy Storage Technologies Utilizing HEMs 41015.5 Manufacturing and Industrial Challenges in Energy Storage Applications 41515.6 Summary and Conclusions 420Acknowledgement 421References 42116 Current Status, Challenges, and Prospects of High-Entropy Materials 427Swagat Kumar Purohit, Abhaya Kumar Mishra, Deepak Kumar Pradhan, and Arpan Kumar Nayak16.1 Introduction 42716.2 Background 42816.3 Synthesis Method for HEMs 42916.4 Current Status of HEMs as the Electrode in Supercapacitors 43216.5 Current Status of HEMs as the Electrode in Lithium-Ion Batteries 43316.6 Current Status of HEMs as the Electrode in Dielectric Materials 43316.7 Challenges in Using HEMs as the Electrode in Supercapacitors 43516.8 Challenges in Using HEMs as the Electrode in Lithium-Ion Batteries 43516.9 Challenges in Using HEMs as the Raw Material for the Synthesis of Dielectric Materials 43616.10 Prospects of HEMs as the Electrode in Supercapacitors 43616.11 Prospects of HEMs as the Electrode in Lithium-Ion Batteries 43716.12 Prospects of HEMs in the Synthesis of Dielectric Materials 437References 438Index 445

Dr. Chien-Te Hsieh is Professor in the Department of Chemical Engineering and Materials Science at Yuan Ze University, Taiwan. His research focuses on nanomaterial synthesis using atomic layer deposition, microwave deposition, and infrared-assisted methods. He has published over 270 SCI papers and holds more than 40 patents.Dr. Pradeep Kumar Panda is Postdoctoral Researcher at Yuan Ze University, Taiwan. His research encompasses sustainable nanomaterials, electrochemical catalysts, energy devices, polymer science, and biomaterials. He contributes expertise in both experimental and applied aspects of materials for energy storage and conversion.Dr. Arpan Kumar Nayak is Assistant Professor at the Regional Institute of Education (NCERT), Mysuru, India. His research centers on the synthesis of nanostructured and carbon-based materials for environmental and energy applications. He has authored more than 110 peer-reviewed journal articles in the field of nanomaterials science.

• Preface xviiList of Abbreviations xix1 Overview of High-Entropy Materials for Energy Storage: Surface Chemistry and Its Functionality 1Mukarram Ali, Mohsin Saleem, Tahir Sattar, Muhammad Zubair Khan, Yoon-Cheol Ha, and Jung Hyuk Koh1.1 Introduction 11.2 Fundamental Principles in HEMs 31.3 Design and Synthesis of High-Entropy Materials for Energy Storage 51.4 High-Entropy Phase Stabilization and Structural Integrity 81.5 Compositional Engineering in High-Entropy Materials 121.6 High-Entropy Electrodes for Energy Storage 151.7 High-Entropy Electrolytes and Interface Engineering 181.8 Advanced Characterization Techniques for HEMs 201.9 Challenges, Prospects, and Commercialization Pathways 221.10 Summary and Outlook 241.11 Outlook 24Acknowledgment 26References 262 Perovskite-Based High-Entropy Materials for Energy Storage Applications 33Asfaq Ali, Sanjeev Verma, Pradeep Kumar Panda, and Tapas Das2.1 Introduction 332.2 Design Strategies and Entropy Engineering in HEPOs 342.3 Synthesis Techniques 392.4 Energy Storage Applications 422.5 Challenges and Future Prospects 552.6 Conclusions 56References 563 Functional 2D-Based High-Entropy Materials for Energy Storage Applications 63Asfaq Ali, Sanjeev Verma, Pradeep Kumar Panda, and Tapas Das3.1 Introduction 633.2 Structural Characteristics and Stabilization of 2D-Based HEMs 663.3 Structural Flexibility and Charge Transport in 2D HEMs 673.4 Classification and Synthesis of HEMs 683.5 Mechanisms of High-Entropy Structures 773.6 Applications of High-Entropy 2D Materials in Energy Storage 813.7 Conclusions 903.8 Future Scope 91References 914 Recent Advancements for High-Entropy Materials for the Dielectric Capacitor 101Sushree Sangita Swain, Subash Chandra Sahu, Arpan Kumar Nayak, and Rakesh K. Sahoo4.1 Introduction 1014.2 Processing Methods and Structural Characteristics of High-Entropy Materials (HEMs) 1034.3 Synthesis Techniques for High-Entropy Materials (HEMs) 1044.4 Defining High-Entropy Materials: Composition and Entropy Perspectives 1074.5 Recently Reported High-Entropy Material 1074.6 Potential of High-Entropy Materials (HEMs) in Dielectric Energy Storage Devices 1094.7 Application of High-Entropy Materials in Dielectric Energy Storage 1104.8 Unique Effects in HEAs and Their Influence on Properties 1134.9 Challenges in HEM Design for Dielectric Energy Storage 1154.10 Device-Level Challenges in Incorporating High-Entropy Materials (HEMs) 1164.11 Temperature-Dependent Conductivity Degradation in HEMs 1174.12 Dielectric Polarization Response to Temperature Fluctuations in HEMs 1184.13 Conclusion and Future Perspectives 120References 1215 Electrokinetics of High-Entropy Materials for Energy Storage Devices 129Yukti Setia, Nikita Bhatt, Sankeerthana Bellamkonda, and Malaya K. Sahoo5.1 Introduction 1295.2 Fundamentals of Electrokinetics in Energy Storage Devices 1305.3 Mechanistic Insights: Electrokinetics of HEMs in Energy Storage 1365.4 Conclusions and Perspectives 151References 1526 Importance of High-Entropy Materials for Energy Storage Applications 159Jala Bib Khan, Pradeep Kumar Panda, Pranjyan Dash, and Chien-Te Hsieh6.1 Introduction 1596.2 Fundamentals of High-Entropy Materials 1606.3 Synthesis 1626.4 Applications 1666.5 Challenges and Limitations 1756.6 Future Prospective 1786.7 Conclusions 179References 1797 Noble-Metal-Based High-Entropy Oxides for Energy Storage Applications 185Dibyananda Majhi, Shreeganesh Subraya Hegde, and Subrahmanyam Challapalli7.1 Introduction 1857.2 High-Entropy Oxides and Noble-Metal-Based High-Entropy Oxides 1867.3 Synthesis Methods for High-Entropy Oxides and Noble-Metal-Based High-Entropy Oxides 1897.4 Noble-Metal-Based High-Entropy Oxides for Energy Applications 1927.5 Current Challenges and Future Perspectives 2007.6 Conclusions 201Funding Statement 201Author Contributions 201Conflict of Interest 202References 2028 Noble-Metal-Free High-Entropy Oxides for Energy Storage Applications 209Biraj K. Satpathy8.1 Introduction 209References 2319 Noble Metal-Based High-Entropy Alloys for Energy Storage Applications 239Parul Devi9.1 Introduction 2399.2 Synthesis Methods 2439.3 Entropy Enhancement of HEAs 2499.4 Application of HEAs 2509.5 Summary and Outlook 254References 25610 Noble-Metal-Free High-Entropy Alloys for Energy Storage Applications 263Yukti Setia, Nikita Bhatt, Maneesh Kumar, and Malaya K. Sahoo10.1 Introduction 26310.2 Fundamentals of HEAs 26510.3 Applications of NMF-HEAs in Energy Storage Devices 26810.4 Conclusions and Perspectives 281Author Contributions 282References 28211 Metal-Free High-Entropy Materials for Energy Storage Applications 289Jnanranjan Panda, Dipanwita Das, Subhashree Mohanty, and Sumit Majumder11.1 Introduction 28911.2 Classification of HEMs 29211.3 Advanced Synthesis Methods of HEMs 29411.4 Characterization Techniques 29911.5 Application of HEMs in Energy Storage Systems 30011.6 Advantages and Challenges 30811.7 Conclusions 30911.8 Future Perspectives 310References 31012 Metal-Doped High-Entropy Materials for Energy Storage Applications 315Barkha Rani, Sourav Ghosh, A. Deepak, and M. Suresh Kumar12.1 Introduction 31512.2 Role of Doping in HEMs for Energy Storage 31812.3 Synthesis Methods of M-HEMs 31912.4 Advantages of M-HEMs in Energy Storage Applications 32512.5 Computational Modeling for M-HEM Development 33412.6 Conclusions and Future Perspectives 337References 33813 Noble Metal-Doped High-Entropy Materials for Energy Storage Applications 347Rajashree Sahoo, Saswat Mohapatra, Swagat Kumar Purohit, and Arpan Kumar Nayak13.1 Introduction 34713.2 Outline of the Applications of HEAs in Battery Fabrication 35013.3 Synthesis 35213.4 Summary and Future Scope 369References 36914 Morphology-Dependent High-Entropy Materials for Energy Storage Applications 377Pranshula Panigrahi, Manoj Kumar Mallick, and Akshaya Kumar Palai14.1 Introduction 37714.2 Advanced Synthesis Techniques for Morphology Control 38014.3 Characterization of Morphology and Properties 38314.4 Mechanisms Governing Morphology-Dependent Performance 38914.5 Potential Energy Storage Applications 39114.6 Challenges and Future Perspectives 39314.7 Conclusion 396References 39615 Industrial Aspects of High-Entropy Materials for Energy Storage Applications 401Chandan Kumar Panda, Subhashree Behera, Hyun-Suk Kim, and Jungseek Hwang15.1 Introduction 40115.2 Fundamentals of HEMs 40415.3 Characterization of HEMs 40715.4 Industrial Energy Storage Technologies Utilizing HEMs 41015.5 Manufacturing and Industrial Challenges in Energy Storage Applications 41515.6 Summary and Conclusions 420Acknowledgement 421References 42116 Current Status, Challenges, and Prospects of High-Entropy Materials 427Swagat Kumar Purohit, Abhaya Kumar Mishra, Deepak Kumar Pradhan, and Arpan Kumar Nayak16.1 Introduction 42716.2 Background 42816.3 Synthesis Method for HEMs 42916.4 Current Status of HEMs as the Electrode in Supercapacitors 43216.5 Current Status of HEMs as the Electrode in Lithium-Ion Batteries 43316.6 Current Status of HEMs as the Electrode in Dielectric Materials 43316.7 Challenges in Using HEMs as the Electrode in Supercapacitors 43516.8 Challenges in Using HEMs as the Electrode in Lithium-Ion Batteries 43516.9 Challenges in Using HEMs as the Raw Material for the Synthesis of Dielectric Materials 43616.10 Prospects of HEMs as the Electrode in Supercapacitors 43616.11 Prospects of HEMs as the Electrode in Lithium-Ion Batteries 43716.12 Prospects of HEMs in the Synthesis of Dielectric Materials 437References 438Index 445