Issue 10, 2011
From the journal:

Journal of Materials Chemistry

Electrostatic layer-by-layer self-assembly multilayer films based on graphene and manganese dioxide sheets as novel electrode materials for supercapacitors†

Zhangpeng Li,ab   Jinqing Wang,*a   Xiaohong Liu,a   Sheng Liu,ab   Junfei Ouab  and  Shengrong Yang*a  

* Corresponding authors

a State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, P. R. China
E-mail: jqwang@licp.cas.cn, sryang@licp.cas.cn
Fax: +86-931-8277088
Tel: +86-931-4968076

b Graduate University of Chinese Academy of Sciences, Beijing, P. R. China

Abstract

A new class of multilayer films was constructed by electrostatic layer-by-layer self-assembly, using poly(sodium 4-styrenesulfonate) mediated graphene sheets (PSS-GS), manganese dioxide (MnO2) sheets, and poly(diallyldimethylammonium) (PDDA) as building blocks. UV-vis spectroscopy, field-emission scanning electron microscopy and X-ray photoelectron spectroscopy were used to characterize the microstructures and morphologies of the multilayer films. Capacitive properties of the synthesized multilayer film electrodes were studied using cyclic voltammetry and galvanostatic charge/discharge in 0.1 M Na2SO4 electrolyte. The specific capacitance of the ITO/(PDDA/PSS-GS/PDDA/MnO2)10electrode reached 263 F gāˆ’1 at a discharge current density of 0.283 A gāˆ’1; moreover, this film electrode also shows a good cyclic stability and high Coulombic efficiency. Anticipatedly, the synthesized multilayer films will find promising applications as a novel electrode material in supercapacitors and other devices in virtue of their outstanding characteristics of controllable capacitance, good cycle stability, low cost and environmentally benign nature.

Graphical abstract: Electrostatic layer-by-layer self-assembly multilayer films based on graphene and manganese dioxide sheets as novel electrode materials for supercapacitors

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Article information

DOI
https://doi.org/10.1039/C0JM02650F
Article type
Paper
Submitted
12 Aug 2010
Accepted
02 Dec 2010
First published
31 Jan 2011

J. Mater. Chem., 2011,21, 3397-3403

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Electrostatic layer-by-layer self-assembly multilayer films based on graphene and manganese dioxide sheets as novel electrode materials for supercapacitors

Z. Li, J. Wang, X. Liu, S. Liu, J. Ou and S. Yang, J. Mater. Chem., 2011, 21, 3397 DOI: 10.1039/C0JM02650F

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