Journal
JOURNAL OF POWER SOURCES
Volume 251, Issue -, Pages 202-207Publisher
ELSEVIER
DOI: 10.1016/j.jpowsour.2013.11.048
Keywords
Spinel nickel cobaltate; Ultrathin materials; Nanosheets; Carbon fiber paper; Supercapacitor
Funding
- National Natural Science Foundation of China [21306026]
- Natural Science Foundation of Guangdong Province [10251009001000003, S2012010009680]
- Scientific Program of Guangdong Province [2012A030600006]
- Fund of Higher Education of Guangdong Province [cgzhzd1104]
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Two-dimensional ultrathin mesoporous NiCo2O4 nanosheets on carbon fiber paper (CFP) are synthesized through a facile solvothermal method combined with a post thermal treatment. The well interconnected ultrathin NiCo2O4 nanosheets directly grown on the carbon nanofibers could allow for easy diffusion of the electrolyte, shorten the transport path of ion and electron and accommodate the strain during cycling. As a result, superior pseudocapacitive performance is achieved with large specific capacitance of 999 F g(-1) at a high current density of 20 A g(-1). The capacitance loss is 15.6% after 3000 cycles at a current density of 10 A g(-1), displaying good cycle ability and high rate capability. (C) 2013 Elsevier B.V. All rights reserved.
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