All-solid-state asymmetric supercapacitor based on reduced graphene oxide/carbon nanotube and carbon fiber paper/polypyrrole electrodes

作者：Yang, Chongyang; Shen, Jiali; Wang, Chunyan; Fei, Haojie; Bao, Hua; Wang, Gengchao^*

来源：Journal of Materials Chemistry A, 2014, 2(5): 1458-1464.

DOI：10.1039/c3ta13953k

• HIGH-PERFORMANCE SUPERCAPACITORS
• THIN-FILM ELECTRODES
• HIGH-ENERGY DENSITY
• ELECTROCHEMICAL CAPACITORS
• HYBRID FILMS
• HIGH-POWER
• FLEXIBLE SUPERCAPACITORS
• AQUEOUS-ELECTROLYTES
• MANGANESE OXIDE
• POLYPYRROLE

Sandwich-like reduced graphene oxide/carboxylated multi-walled carbon nanotube (RGO/cMWCNT) hybrid film and the carbon fiber paper-supported polypyrrole (CFP/PPy) composite film were prepared by a vacuum-infiltration process and an electrochemical deposition method, respectively. Furthermore, a novel all-solid-state asymmetric supercapacitor (ASC) was fabricated using RGO/cMWCNT as the negative electrode and CFP/PPy as the positive electrode, separated with potassium polyacrylate/KCl gel electrolyte. Due to the unique structure, stable potential window and good capacitive performance of the two electrodes, the as-fabricated ASC can be cycled reversibly at a cell voltage of 1.6 V and displays outstanding performances with an energy density of 28.6 W h kg(-1) and a power density of 15.1 kW kg(-1). Additionally, our ASC device also presents a superior long cycle life with 93% capacitance retention after 2000 cycles.

• 出版日期2014
• 单位华东理工大学