The Electrochemical Capacitance Performance of La_1-xSr_xCoO₃ Perovskites

Authors

Yang XU, 1. College of Material Science and Chemical Engineering, Harbin Engineering University, Harbin 150001,China;2. College of Pharmacy, Heilongjiang University of Traditional Chinese Medicine, Harbin 150040, China;
Yan-yan BAO, 1. College of Material Science and Chemical Engineering, Harbin Engineering University, Harbin 150001,China;2. College of Pharmacy, Heilongjiang University of Traditional Chinese Medicine, Harbin 150040, China;
Long-Fei DU, 1. College of Material Science and Chemical Engineering, Harbin Engineering University, Harbin 150001,China;2. College of Pharmacy, Heilongjiang University of Traditional Chinese Medicine, Harbin 150040, China;
Dian-xue CAO, 1. College of Material Science and Chemical Engineering, Harbin Engineering University, Harbin 150001,China;2. College of Pharmacy, Heilongjiang University of Traditional Chinese Medicine, Harbin 150040, China;
Gui-Ling WANG, 1. College of Material Science and Chemical Engineering, Harbin Engineering University, Harbin 150001,China;2. College of Pharmacy, Heilongjiang University of Traditional Chinese Medicine, Harbin 150040, China;Follow

Corresponding Author

Gui-Ling WANG(wangguiling@hrbeu.edu.cn)

Abstract

In this paper, the La_1-xSr_xCoO₃ (x = 0.2, 0.4, 0.6, 0.8) perovskites powders were synthesized by a sol-gel method. The perovskite phases were characterized by X-ray diffraction (XRD), while the electrochemical capacitance performance of La_1-xSr_xCoO₃ electrodes in alkaline electrolyte was studied by cyclic voltammetry and galvanostatic charge/discharge test. It was found that the La_0.6Sr_0.4CoO₃ electrode exhibited a specific capacitance of 325 F.g^-1 in 6.0 mol.L^-1 KOH electrolyte at a current density of 10 mA.cm^-2, and the specific capacitance of 315 F.g^-1 could be maintained after 500 charge/discharge cycles which corresponds to the retention rate of 97%.

Graphical Abstract

Keywords

perovskite, electrochemical capacitance, alkaline electrolytes

DOI Link

https://doi.org/10.61558/2993-074X.2110

Publication Date

2013-04-28

Online Available Date

2012-04-20

Revised Date

2012-04-10

Received Date

2012-02-27

Recommended Citation

Yang XU, Yan-yan BAO, Long-Fei DU, Dian-xue CAO, Gui-Ling WANG. The Electrochemical Capacitance Performance of La_1-xSr_xCoO₃ Perovskites[J]. Journal of Electrochemistry, 2013 , 19(2): 174-177.
DOI: 10.61558/2993-074X.2110
Available at: https://jelectrochem.xmu.edu.cn/journal/vol19/iss2/8