Issue 20, 2014
From the journal:

RSC Advances

Sandwich-structured MnO2/polypyrrole/reduced graphene oxide hybrid composites for high-performance supercapacitors

Guangqiang Han,a   Yun Liu,a   Erjun Kan,b   Jian Tang,a   Lingling Zhang,a   Huanhuan Wanga  and  Weihua Tang*a  

* Corresponding authors

a Key Laboratory of Soft Chemistry and Functional Materials, Ministry of Education, Nanjing University of Science and Technology, Nanjing 210094, P. R. China
E-mail: whtang@mail.njust.edu.cn
Fax: +86 25 8431 7311
Tel: +86 25 8431 7311

b Department of Applied Physics, Nanjing University of Science and Technology, Nanjing 210094, P. R. China

Abstract

The rational preparation of hierarchical MnO2/polypyrrole (PPy)/reduced graphene oxide (rGO) nanosheets in a sandwich structure is presented. By co-assembly of MnO2/GO and PPy/GO into layer-by-layer architecture and reduction of GO, ternary (MnO2, PPy)/rGO composites were first fabricated. The materials were fully characterized in terms of structure, morphology and electrochemical properties. The unique architecture offers the composites good capacitance by taking advantage of the strong synergistic effect of each component. A maximum specific capacitance as high as 404 F g−1 was obtained for this composite electrode. And over 91% of the initial capacitance was retained after 5000 continuous cycles. The good electrochemical performance and long-term cycling stability make this approach attractive in developing multifunctional hierarchical composites for high-performance supercapacitors.

Graphical abstract: Sandwich-structured MnO2/polypyrrole/reduced graphene oxide hybrid composites for high-performance supercapacitors

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Article information

DOI
https://doi.org/10.1039/C3RA47764A
Article type
Paper
Submitted
18 Dec 2013
Accepted
31 Jan 2014
First published
31 Jan 2014

RSC Adv., 2014,4, 9898-9904

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Sandwich-structured MnO2/polypyrrole/reduced graphene oxide hybrid composites for high-performance supercapacitors

G. Han, Y. Liu, E. Kan, J. Tang, L. Zhang, H. Wang and W. Tang, RSC Adv., 2014, 4, 9898 DOI: 10.1039/C3RA47764A

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