Issue 31, 2012
From the journal:

Physical Chemistry Chemical Physics

Supercapacitor electrodes with especially high rate capability and cyclability based on a novel Pt nanosphere and cysteine-generated graphene†

Dacheng Zhang,a   Xiong Zhang,a   Yao Chen,a   Changhui Wang,a   Yanwei Ma,*a   Huanli Dong,b   Lang Jiang,b   Qing Mengb  and  Wenping Hu*b  

* Corresponding authors

a Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing, China
E-mail: ywma@mail.iee.ac.cn
Fax: +86-82547137
Tel: +86-82547129

b Institute of Chemistry, Chinese Academy of Sciences, Beijing, China
E-mail: huwp@iccas.ac.cn
Tel: +86-82615030

Abstract

In the present work, supercapacitors based on graphene/Pt films show especially high rate capability (120 F g−1 even at 50 A g−1) and cyclability (no attenuation over 10 000 cycles) and peculiar nanosphere morphology after electrochemical cycling. Furthermore, supercapacitors based on the graphene powder with a binder exhibit high specific capacitance (249 F g−1 at 0.1 A g−1), long cycle life (no attenuation over 40 000 cycles) and high rate capability (150 F g−1 even at 50 A g−1), which are much better than those of most graphene electrode materials. These indicate the great potential of the cysteine reduced graphene electrodes in energy storage.

Graphical abstract: Supercapacitor electrodes with especially high rate capability and cyclability based on a novel Pt nanosphere and cysteine-generated graphene

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Article information

DOI
https://doi.org/10.1039/C2CP41051F
Article type
Communication
Submitted
02 Apr 2012
Accepted
22 Jun 2012
First published
22 Jun 2012

Phys. Chem. Chem. Phys., 2012,14, 10899-10903

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Supercapacitor electrodes with especially high rate capability and cyclability based on a novel Pt nanosphere and cysteine-generated graphene

D. Zhang, X. Zhang, Y. Chen, C. Wang, Y. Ma, H. Dong, L. Jiang, Q. Meng and W. Hu, Phys. Chem. Chem. Phys., 2012, 14, 10899 DOI: 10.1039/C2CP41051F

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