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1. Self-assembled graphene films with various thicknesses as supercapacitor electrodes | |||
ZHU Jianbo,CHEN Wenjing,GUAN Sinan,ZHAO Xiayi,CHEN Xueye,ZU Jiasheng | |||
Chemical Engineering 03 June 2020 | |||
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Abstract:In this paper,Graphene have attracted considerable attention as the supercapacitor material due to its high electronic conductivity and large ion-accessible surface area. Herein, self-assembled reduced grapheneoxide (rGO) films with various controllable thicknesses and mass loadings are facilely prepared via a scalable vacuum filtration method. The rGO film electrodes with considerable mass loading of 6.7 mg cm-2 exhibit high specific capacitance of 173.4 F g-1 (1.16 F cm-2) at 1 A g-1 in 6 M KOH aqueous electrolyte, indicating the high utilization of the rGO active material. Moreover, quasi-solid supercapacitors fabricated with the rGO film electrode and PVA/KOH gel electrolyte shows a high capacitance of 1.03 F cm-2 and a large energy density of 0.073 mWh cm-2 at the power density of 3.3 mW cm-2, as well as excellent cycling stability of 85.6% retention after 10000 cycles. Such remarkable performance suggests that the rGO films are promising electrode materials for supercapacitor application. | |||
TO cite this article:ZHU Jianbo,CHEN Wenjing,GUAN Sinan, et al. Self-assembled graphene films with various thicknesses as supercapacitor electrodes[OL].[ 3 June 2020] http://en.paper.edu.cn/en_releasepaper/content/4752297 |
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