Journal
JOURNAL OF MATERIALS CHEMISTRY A
Volume 3, Issue 4, Pages 1730-1736Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c4ta04833d
Keywords
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Funding
- National Natural Science Foundation of China [21306026]
- Natural Science Foundation of Guangdong Province [S2012010009680]
- Foundation of Higher Education of Guangdong Province [cgzhzd1104, 2013CXZDA016]
- Foundation for Distinguished Young Talents in Higher Education of Guangdong [2013LYM0024]
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Nickel cobalt sulfide (NiCo2S4), a recently reported novel electrode material, has a higher electric conductivity than that of NiCo2O4. We describe a facile one-step route to the development of burl-like NiCo2S4 on carbon fiber paper/cloth (CFP/CFC) used as electrodes for supercapacitors. The influence of the carbon substrate on the crystal structure and electrochemical performance of the NiCo2S4 electrodes is evaluated. We obtained a pure phase of NiCo2S4 over a CFP substrate, whereas, a mixed phase over a CFC substrate. Superior pseudocapacitive performance is achieved over NiCo2S4/CFP with a large specific capacitance of 0.83 F cm(-2) at a high current density of 25 mA cm(-2). The capacitance loss is 24.1% after 5000 cycles at a current density of 20 mA cm(-2), displaying good cyclability and high rate capability.
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