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
收藏
页码：497 / 502
页数：6
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