期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 54, 期 36, 页码 10521-10524出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201504349
关键词
mixed metal sulfides; nanotubes; polymeric template; supercapacitors
资金
- Ministry of Education (Singapore) through AcRF [MOE2014-T2-1-058, ARC41/14, M4020223.120]
A simple and versatile method for general synthesis of uniform one-dimensional (1D) MxCo3-xS4 (M=Ni, Mn, Zn) hollow tubular structures (HTSs), using soft polymeric nanofibers as a template, is described. Fibrous core-shell polymer@M-Co acetate hydroxide precursors with a controllable molar ratio of M/Co are first prepared, followed by a sulfidation process to obtain core-shell polymer@MxCo3-xS4 composite nanofibers. The as-made MxCo3-xS4 HTSs have a high surface area and exhibit exceptional electrochemical performance as electrode materials for hybrid supercapacitors. For example, the MnCo2S4 HTS electrode can deliver specific capacitance of 1094Fg(-1) at 10Ag(-1), and the cycling stability is remarkable, with only about 6% loss over 20000 cycles.
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