钙钛矿La1-xSrxCoO3的电化学电容性能

doi:10.61558/2993-074X.2110

电化学（中英文） ›› 2013, Vol. 19 ›› Issue (2): 174-177. doi: 10.61558/2993-074X.2110

钙钛矿La_1-xSr_xCoO₃的电化学电容性能

徐暘，包彦彦，杜龙飞，曹殿学，王贵领^*

1. 哈尔滨工程大学材料科学与化学工程学院，黑龙江哈尔滨 150001； 2. 黑龙江中医药大学药学院，黑龙江哈尔滨 150040

收稿日期:2012-02-27 修回日期:2012-04-10 出版日期:2013-04-28 发布日期:2012-04-20
通讯作者: 王贵领 E-mail:wangguiling@hrbeu.edu.cn
基金资助:
国家自然科学基金项目（No. 20973048）资助

The Electrochemical Capacitance Performance of La_1-xSr_xCoO₃ Perovskites

XU Yang, BAO Yan-yan, DU Long-Fei, CAO Dian-xue, WANG Gui-Ling^*

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

Received:2012-02-27 Revised:2012-04-10 Published:2013-04-28 Online:2012-04-20
Contact: WANG Gui-Ling E-mail:wangguiling@hrbeu.edu.cn

摘要/Abstract

摘要： 以溶胶-凝胶法制备La_1-xSr_xCoO₃(x = 0.2, 0.4, 0.6, 0.8)电极材料，XRD表征证明所得产物属钙钛矿相. 由循环伏安和充放电曲线测试了La_1-xSr_xCoO₃在碱性介质中的电化学电容性能. 结果表明，La_0.6Sr_0.4CoO₃电极10 mA.cm^-2电流密度的放电比电容为325 F.g^-1，500周期循环后其比电容仍保持于315 F.g^-1，比电容保持率97.0%.

关键词: 钙钛矿, 电化学电容, 碱性介质

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%.

Key words: perovskite, electrochemical capacitance, alkaline electrolytes

中图分类号:

O646.54

徐暘, 包彦彦, 杜龙飞, 曹殿学, 王贵领. 钙钛矿La_1-xSr_xCoO₃的电化学电容性能[J]. 电化学（中英文）, 2013, 19(2): 174-177.

XU Yang, BAO Yan-yan, DU Long-Fei, CAO Dian-xue, WANG Gui-Ling. The Electrochemical Capacitance Performance of La_1-xSr_xCoO₃ Perovskites[J]. Journal of Electrochemistry, 2013, 19(2): 174-177.

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钙钛矿La_1-xSr_xCoO₃的电化学电容性能

The Electrochemical Capacitance Performance of La_1-xSr_xCoO₃ Perovskites

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