期刊
JOURNAL OF ENERGY CHEMISTRY
卷 25, 期 1, 页码 49-54出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jechem.2015.11.011
关键词
3D graphene framework; Polystyrene; Sacrificial template; Supercapacitor
资金
- Natural Science Foundation of China [51302281, 51402324]
- Natural Science Foundation of Shanxi Province [2013011012-7]
A free-standing paper-like three-dimensional graphene framework (3DGF) with orientated laminar structure and interconnected macropores, was obtained by the hard template-directed ordered assembly. As the sacrificial templates, polystyrene (PS) latex spheres were assembled with graphene oxide (GO) to build up a sandwich type composite film, followed by heat removal of which with a simultaneous reduction of GO. The 3DGF exhibited high specific surface area of 402.5 m(2)/g, controllable pores and mechanical flexibility, which was employed as the binder-free supercapacitor electrode and shows high specific gravimetric capacitance of 95 Fig at 0.5 A/g, with enhanced rate capability in 3 electrode KOH system. (C) 2015 Science Press and Dalian Institute of Chemical Physics. All rights reserved.
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