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Indexed by:期刊论文

Date of Publication:2013-08-01

Journal:CARBON

Included Journals:SCIE、EI

Volume:59

Page Number:537-546

ISSN No.:0008-6223

Abstract:P/N co-doped porous carbons have been synthesized by a simple method through direct carbonization of phosphoric acid doped polyaniline. The textural property and the surface chemistry have been investigated by nitrogen sorption and X-ray photoelectron spectra. P/N co-doped carbons exhibit typical microporous characters with a low surface area and a narrow pore size distribution. Interestingly, the concentration and the development of heteroatom-containing surface functionalities are strongly depended on the temperature of heat treatment. Cyclic voltammetry and galvanostatic charge-discharge tests have been used to investigate the capacitive performance of such microporous carbons, which exhibit high specific capacitance (154.4 F g(-1)) and excellent stability. The improved electrochemical performance is attributed to the combination of the co-doping of heteroatoms (P and N) and micropores generated by the in situ activation of phosphoric acid. (C) 2013 Elsevier Ltd. All rights reserved.