Facile preparation of three-dimensional porous hydrous ruthenium oxide electrode for supercapacitors
- Authors
- Jeong, Myung-Gi; Zhuo, Kai; Cherevko, Serhiy; Kim, Woo-Jae; Chung, Chan-Hwa
- Issue Date
- 15-Dec-2013
- Publisher
- ELSEVIER
- Keywords
- Porous hydrous ruthenium oxide; Dendrite structure; Hydrogen evolution reaction; Electrochemical dealloying; Pseudo-capacitor
- Citation
- JOURNAL OF POWER SOURCES, v.244, pp.806 - 811
- Journal Title
- JOURNAL OF POWER SOURCES
- Volume
- 244
- Start Page
- 806
- End Page
- 811
- URI
- https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/14054
- DOI
- 10.1016/j.jpowsour.2012.12.037
- ISSN
- 0378-7753
- Abstract
- A porous hydrous ruthenium oxide for supercapacitors is fabricated by electro-deposition accompanied with hydrogen-evolution reaction. This high-surface-area electrode (207.5 m(2) g(-1)) is developed by electrochemical de-alloying process of copper from as-deposited Ru-(Cu) foam (23.5 m(2) g(-1)). The threedimensional structures with open pores and numerous dendritic morphologies produce good electrochemical performances by providing the pathway for facile penetration of electrolytes into active electrode surface. The three-dimensional porous hydrous ruthenium oxide exhibits good capacitance performance of 809 F g(-1) at 1.5 A g(-1) high energy density (112 Wh kg(-1)), and excellent stability retention (similar to 98%) even after 3000 cycles. (C) 2012 Elsevier B.V. All rights reserved.
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