A New Type of Porous Graphite Foams and Their Integrated Composites with Oxide/Polymer Core/Shell Nanowires for Supercapacitors : Structural Design, Fabrication, and Full Supercapacitor Demonstrations

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal

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Author(s)

  • Xinhui Xia
  • Dongliang Chao
  • Cao Guan
  • Xiehong Cao
  • Hong Jin Fan

Detail(s)

Original languageEnglish
Pages (from-to)1651-1658
Journal / PublicationNano Letters
Volume14
Issue number3
Online published18 Feb 2014
Publication statusPublished - 12 Mar 2014
Externally publishedYes

Abstract

We attempt to meet the general design requirements for high-performance supercapacitor electrodes by combining the strategies of lightweight substrate, porous nanostructure design, and conductivity modification. We fabricate a new type of 3D porous and thin graphite foams (GF) and use as the light and conductive substrates for the growth of metal oxide core/shell nanowire arrays to form integrated electrodes. The nanowire core is Co3O4, and the shell is a composite of conducting polymer (poly(3,4-ethylenedioxythiophene), PEDOT) and metal oxide (MnO2). To show the advantage of this integrated electrode design (viz., GF + Co3O4/PEDOT-MnO2 core/shell nanowire arrays), three other different less-integrated electrodes are also prepared for comparison. Full supercapacitor devices based on the GF + Co3O4/PEDOT- MnO2 as positive electrodes exhibit the best performance compared to other three counterparts due to an optimal design of structure and a synergistic effect. 

Research Area(s)

  • conducting polymer, core/shell, graphene foam, Graphite foam, nanowire arrays, supercapacitor

Citation Format(s)

A New Type of Porous Graphite Foams and Their Integrated Composites with Oxide/Polymer Core/Shell Nanowires for Supercapacitors : Structural Design, Fabrication, and Full Supercapacitor Demonstrations. / Xia, Xinhui; Chao, Dongliang; Fan, Zhanxi; Guan, Cao; Cao, Xiehong; Zhang, Hua; Fan, Hong Jin.

In: Nano Letters, Vol. 14, No. 3, 12.03.2014, p. 1651-1658.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal