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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 33, Number 12
BKCSDE 33(12)
December 20, 2012

Title	Supercapacitive Properties of Co-Ni Mixed Oxide Electrode Adopting the Nickel Foam as a Current Collector
Author	Hyeon Woo Cho, Ji Hyun Nam, Jeong Ho Park, Kwang Man Kim, Jang Myoun Ko
Keywords	Cobalt-nickel oxide, Nickel foam current collector, Supercapacitor, Cyclic voltammetry
Abstract	Three-dimensional porous nickel foam was used as a current collector to prepare a Co-Ni oxide/Ni foam electrode for a supercapacitor. The synthesized Co-Ni oxide was proven to consist of mixed oxide phases of Co3O4 and NiO. The Co-Ni oxide/Ni foam electrode prepared was characterized by morphological observation, crystalline property analysis, cyclic voltammetry, and impedance spectroscopy. Cyclic voltammetry for the electrode showed high specific capacitances, such as 936 F g−1 at 5 mV s−1 and 566 F g−1 at 200 mV s−1, and a comparatively good cycle performance. These improved results were mainly due to the dimensional stability of the nickel foam and its high electrical contact between the electrode material and the current collector substrate.
Page	3993 - 3997
Full Text	PDF

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