Recent Progress in Supercapacitors: From Materials Design to System Construction

• Published in: Advanced materials (Weinheim) 2013-10, Vol.25 (37), p.5336-5342
• Main Authors: Wang, Yonggang, Xia, Yongyao
• Format: Article
• Language: English
• Subjects: hybrid systems; nanostructural materials; porous materials; pseudocapacitance; supercapacitors
• ISSN: 0935-9648; 1521-4095
• DOI: 10.1002/adma.201301932

Supercapacitors are currently attracting intensive attention because they can provide energy density by orders of magnitude higher than dielectric capacitors, greater power density, and longer cycling ability than batteries. The main challenge for supercapacitors is to develop them with high energy density that is close to that of a current rechargeable battery, while maintaining their inherent characteristics of high power and long cycling life. Consequently, much research has been devoted to enhance the performance of supercapacitors by either maximizing the specific capacitance and/or increasing the cell voltage. The latest advances in the exploration and development of new supercapacitor systems and related electrode materials are highlighted. Also, the prospects and challenges in practical application are analyzed, aiming to give deep insights into the material science and electrochemical fields. The main challenge for supercapacitors is to develop them with high energy density that is close to that of current rechargeable batteries, but to maintain their inherent characteristics of high power and long cycling life. The latest advances in the exploration and development of new supercapacitor systems and related electrode materials are reviewed. Also, the prospects and challenges in practical applications are analyzed.