期刊
JOURNAL OF POWER SOURCES
卷 247, 期 -, 页码 197-203出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jpowsour.2013.08.076
关键词
Graphene; Polyaniline; Mesoporous; Supercapacitor
资金
- National Science Foundation of China [51077014, 21003028, 51202043]
- Fundamental Research funds for the Central Universities
- Program for New Century Excellent Talents in University [NCET-10-0050]
- Excellent Youth Foundation of Heilongjiang Province of China
A facile approach has been developed to fabricate mesoporous PANI film on ultra-thin graphene nanosheet (G-mPANI) hybrid by in situ polymerization using graphene-mesoporous silica composite as template. Due to its mesoporous structure, over-all conductive network, G-mPANI electrode displays a specific capacitance of 749 F g(-1) at 0.5 A g(-1) with excellent rate capability (remains 73% even at 5.0 A g(-1)), much higher than that of pristine PANI electrode (315 F g(-1) at 0.5 A g(-1), 39% retention at 5.0 A g(-1)) in 1 mol L-1 H2SO4 aqueous solution. more interestingly, the G-mPANI hybrid can maintain 88% of its initial capacitance compared to 45% for pristine PANI after 1000 cycles, suggesting a superior electrochemical cyclic stability. (C) 2013 Elsevier B.V. All rights reserved.
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