Hierarchically Ordered Porous CoOOH Thin-Film Electrodes for High-Performance Supercapacitors

被引：50

作者：

Dhawale, Dattatray S. ^{[1
]}

Kim, Sehwan ^{[1
,2
]}

Park, Dae-Hwan ^{[4
]}

Choy, Jin-Ho ^{[1
,4
]}

Al-deyab, Salem S. ^{[5
]}

Ariga, Katsuhiko ^{[3
]}

Kim, Eunkyoung ^{[2
]}

Vinu, Ajayan ^{[1
]}

机构：

[1] Univ Queensland, Australian Inst Bioengn & Nanotechnol, Brisbane, Qld 4072, Australia

[2] Yonsei Univ, Dept Chem & Bimol Engn, Seoul 120749, South Korea

[3] Natl Inst Mat Sci, WPI MANA, Tsukuba, Ibaraki, Japan

[4] Ewha Womans Univ, Dept Chem & Nanosci, Seoul, South Korea

[5] King Saud Univ, Dept Chem, Petrochem Res Chair, Riyadh, Saudi Arabia

来源：

CHEMELECTROCHEM | 2015年 / 2卷 / 04期

基金：

澳大利亚研究理事会;

关键词：

chemical-bath deposition; electrochemistry; porous CoOOH; supercapacitors; thin films; ENERGY-CONVERSION; COBALT HYDROXIDE; NANOSTRUCTURED MATERIALS; CHEMICAL-SYNTHESIS; HOLLOW SPHERES; STORAGE; DEPOSITION; NICKEL; RUO2; OXYHYDROXIDE;

D O I：

10.1002/celc.201402365

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

We report a simple, cost-effective, and potentially scalable approach for the fabricating hierarchically porous CoOOH thin-film supercapacitors by combining a soft-templating and a chemical-bath deposition (CBD) method. The prepared electrode materials exhibit uniform morphology and highly ordered macropores, achieving a maximum specific capacitance of 387Fg(-1) at a current density of 1mAcm(-2), with a high energy of 19Whkg(-1) and power density of 1713Wkg(-1). In addition, the porous CoOOH electrodes show good stability with a cycling efficiency >90% after 5000 charge-discharge cycles, which could lead to the generation of novel energy-storage devices with better efficiencies.

引用

页码：497 / 502

页数：6

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