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Title: Capacitance decay of nanoporous nickel hydroxide
Authors: Hu, G. 
Li, C.
Gong, H. 
Keywords: Capacitance decay
High current density
Nanoporous nickel hydroxide
Phase change
Issue Date: 1-Oct-2010
Citation: Hu, G., Li, C., Gong, H. (2010-10-01). Capacitance decay of nanoporous nickel hydroxide. Journal of Power Sources 195 (19) : 6977-6981. ScholarBank@NUS Repository.
Abstract: Nanoporous nickel hydroxide Ni(OH)2 coated on nickel foam by using a chemical bath deposition method shows a high specific capacitance of 2200 F g-1 at a discharging current density of 1 Ag-1. After 500 charge-discharge cycles, the specific capacitance is stabilized at 1470 Fg-1, and there is only a 5% fall in specific capacitance during the following 1500 cycles. The relationship between the capacitance decay and changes in the microstructure and morphology of nanoporous Ni(OH)2 is investigated. The results show that phase transformation and the growth of particle/crystal size, rather than the formerly proposed flaking off of Ni(OH)2, are the major factors contributing to the capacitance decay. © 2010.
Source Title: Journal of Power Sources
ISSN: 03787753
DOI: 10.1016/j.jpowsour.2010.03.093
Appears in Collections:Staff Publications

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