Electrochemically synthesized large area network of CoxNiyAlz layered triple hydroxides nanosheets: A high performance supercapacitor

被引：62

作者：

Gupta, Vinay ^{[1
,2
,3
]}

Gupta, Shubhra ^{[2
]}

Miura, Norio ^{[2
]}

机构：

[1] Natl Phys Lab, Carbon Technol Unit, New Delhi 110012, India

[2] Kyushu Univ, Art Sci & Technol Ctr Cooperat Res, Kasuga, Fukuoka 8168580, Japan

[3] Japan Sci & Technol Agcy, Kawaguchi, Saitama 3320012, Japan

来源：

JOURNAL OF POWER SOURCES | 2009年 / 189卷 / 02期

关键词：

CoxNiyAlz; Layered triple hydroxides; Potentiostatic deposition; Specific capacitance; Supercapacitor; ELECTRODE MATERIAL; Y-ZEOLITE; OXIDE; COMPOSITE;

D O I：

10.1016/j.jpowsour.2009.01.026

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 network of CoxNiyAlz layered triple hydroxides (LTHs) nanosheets was prepared by the potentiostatic deposition process at -1.0V (vs. Ag/AgCl) onto stainless steel electrodes. X-ray diffraction patterns show that the Co(x)Ni(y)Al(z)LTHs belong to the hexagonal system with layered structure. Cyclic voltammetry and charge discharge measurements in the potential range of -0.1 to 0.5V and 0.0-0.4V, respectively, vs. Ag/AgCl in 1 M KOH electrolyte indicate that Co(x)Ni(y)Al(z)LTHs have excellent supercapacitive characteristics. The maximum specific capacitance of similar to 1263 F g(-1) was obtained for Co0.59Ni0.21Al0.20LTH. The impedance studies indicated highly conducting nature of the Co(x)Ni(y)Al(z)LTHs. (c) 2009 Elsevier B.V. All rights reserved.

引用

页码：1292 / 1295

页数：4

共 25 条

[1] A self-supporting electrode for supercapacitors prepared by one-step pyrolysis of carbon nanotube/polyacrylonitrile blends [J].