title: 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.
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.
authors.affiliation: Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University , Singapore 637371, Singapore.
authors.forename: Xinhui
authors.initials: X
authors.lastname: Xia
authors.forename: Dongliang
authors.initials: D
authors.lastname: Chao
authors.forename: Zhanxi
authors.initials: Z
authors.lastname: Fan
authors.forename: Cao
authors.initials: C
authors.lastname: Guan
authors.forename: Xiehong
authors.initials: X
authors.lastname: Cao
authors.forename: Hua
authors.initials: H
authors.lastname: Zhang
authors.forename: Hong Jin
authors.initials: HJ
authors.lastname: Fan