Journal
JOURNAL OF POWER SOURCES
Volume 211, Issue -, Pages 92-96Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jpowsour.2012.03.053
Keywords
Carbon hollow-spheres; Hierarchical porous structure; Hydrothermal treatment; Electrochemical performances; Supercapacitor
Funding
- National Key Technologies R & D Program of China [2006BAC02A12]
- National Natural Science Foundation of China [21003077]
- Natural Science Foundation of Tianjin [08JCZDJC21400]
- MOE [IRT-0927]
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Dispersed carbon hollow-spheres with micropore shells and meso/macropore cores are prepared through a simple and efficient hydrothermal treatment directly using colloidal silica as template. The as-prepared hollow spheres are used as supercapacitor electrode material and exhibit high specific capacitance (about 270 F g(-1) at 0.5 A g(-1) in KOH aqueous electrolyte), long cyclic life and excellent rate capability, which is applicable for high performance electrical double-layer capacitors. (C) 2012 Elsevier B.V. All rights reserved.
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