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

• 研究论文 • 上一篇    下一篇

钙钛矿La1-xSrxCoO3的电化学电容性能

徐暘,包彦彦,杜龙飞,曹殿学,王贵领*   

  1. 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 La1-xSrxCoO3 Perovskites

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

  1. 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: 以溶胶-凝胶法制备La1-xSrxCoO3(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La1-xSrxCoO3在碱性介质中的电化学电容性能. 结果表明,La0.6Sr0.4CoO3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 La1-xSrxCoO3 (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 La1-xSrxCoO3 electrodes in alkaline electrolyte was studied by cyclic voltammetry and galvanostatic charge/discharge test. It was found that the La0.6Sr0.4CoO3 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

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