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Formation of nanoporous nickel oxides for supercapacitors prepared by electrodeposition with hydrogen evolution reaction and electrochemical dealloying

  • Materials (Organic, Inorganic, Electronic, Thin Films)
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Abstract

Highly nanoporous nickel oxide electrodes were obtained by electrodeposition accompanied by hydrogen evolution reaction and the selective electrochemical dealloying of copper from Ni-(Cu) porous foam. The nanoporous nickel oxide electrodes consequently have numerous dendritic morphologies composed of nanopores with 20–30 nm diameters. The specific capacitances were 428 F g−1 for as-deposited Ni-(Cu) foam electrode and 1,305 F g−1 for nanoporous nickel-oxide electrode after dealloying process, respectively. This indicates increased surface area by dealloying process leads to innovative increase of specific capacitance.

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Authors and Affiliations

  1. School of Chemical Engineering, Sungkyunkwan University, Suwon, 440-746, Korea

    Myung-Gi Jeong, Kai Zhuo, Serhiy Cherevko & Chan-Hwa Chung

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  1. Myung-Gi Jeong
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  2. Kai Zhuo
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  3. Serhiy Cherevko
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  4. Chan-Hwa Chung
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Correspondence to Chan-Hwa Chung.

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Jeong, MG., Zhuo, K., Cherevko, S. et al. Formation of nanoporous nickel oxides for supercapacitors prepared by electrodeposition with hydrogen evolution reaction and electrochemical dealloying. Korean J. Chem. Eng. 29, 1802–1805 (2012). https://doi.org/10.1007/s11814-012-0097-x

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  • DOI: https://doi.org/10.1007/s11814-012-0097-x

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