Facile preparation of three-dimensional porous hydrous ruthenium oxide electrode for supercapacitors

被引：56

作者：

Jeong, Myung-Gi ^{[1
]}

Zhuo, Kai ^{[1
]}

Cherevko, Serhiy ^{[1
]}

Kim, Woo-Jae ^{[2
]}

Chung, Chan-Hwa ^{[1
]}

机构：

[1] Sungkyunkwan Univ, Sch Chem Engn, Suwon 440746, South Korea

[2] Gachon Univ, Dept Chem & Environm Engn, Songnam 461701, South Korea

来源：

JOURNAL OF POWER SOURCES | 2013年 / 244卷

基金：

新加坡国家研究基金会;

关键词：

Porous hydrous ruthenium oxide; Dendrite structure; Hydrogen evolution reaction; Electrochemical dealloying; Pseudo-capacitor; THIN-FILM ELECTRODES; COPPER ELECTRODEPOSITS; DEPOSITION; RUO2; CODEPOSITION; PERFORMANCE; MORPHOLOGY;

D O I：

10.1016/j.jpowsour.2012.12.037

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

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.

引用

页码：806 / 811

页数：6

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