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电化学(中英文) ›› 2017, Vol. 23 ›› Issue (5): 497-506.  doi: 10.13208/j.electrochem.170343

• 超级电容器近期研究专辑(南京航空航天大学 张校刚教授主编) • 上一篇    下一篇

基于阴离子-石墨嵌层化合物的电化学电容器

王宏宇1*,樊慧1,2,王小红1,2,齐力1   

  1. 1. 中国科学院长春应用化学研究所,长春 130022; 2. 中国科学院大学,北京 100049
  • 收稿日期:2017-03-22 修回日期:2017-04-09 出版日期:2017-10-28 发布日期:2017-10-28
  • 通讯作者: 王宏宇 E-mail:hongyuwang@ciac.ac.cn
  • 基金资助:

    国家自然科学基金项目(21673222, 21571173, 21173206)资助

Electrochemical Capacitors Based on Anion-Graphite Intercalation Compounds

WANG Hong-yu1*, FAN Hui1,2, WANG Xiao-hong1,2, Qi Li1   

  1. 1.State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry,Chinese Academy of Sciences, Changchun 130022, China;2.University of Chinese Academy of Sciences, Beijing,100049,China
  • Received:2017-03-22 Revised:2017-04-09 Published:2017-10-28 Online:2017-10-28
  • Contact: WANG Hong-yu E-mail:hongyuwang@ciac.ac.cn

摘要:

石墨可以在高电势下电化学可逆存储阴离子,有望在高电压储能器件中担当正极材料.本文介绍了基于阴离子-石墨嵌层化合物型正极材料的高比能电容器的研究进展,剖析了影响电容器性能的各方面因素,探讨了一系列表征相关电极材料储能机制的方法和手段,揭示了溶剂化效应对阴离子插嵌石墨正极电化学行为的关键性作用.并进一步概述了该种正极材料近年来在新型储能器件-双离子电池中的发展态势,展望了其应用前景和即将面临的潜在问题.

关键词: 阴离子-石墨嵌层化合物, 电化学电容器, 溶剂化效应, 双离子电池

Abstract: Anions can be electrochemically intercalated into a graphite electrode with a reversible capacity as high as 120 mAh·g-1 at the high potential near 5 V vs. Li/Li+. Besides, graphite is environmentally benign, economic and abundant in China. Therefore, graphite is a very promising positive electrode material for asymmetric capacitors using non-aqueous electrolytes. However, the performance of graphite positive electrode is quite sensitive to various affecting factors, such as the compositions of electrolyte solutions, graphite type and ambient temperature, and so on. In the platform of activated carbon/graphite capacitors, the electrochemical behavior of anion-graphite intercalation compounds can be systematically studied by a series of in situ electrochemical techniques. Future development in this type of electrode materials has been anticipated in terms of new electric energy storage devices under different circumstances.

Key words: Anion-graphite intercalation compounds, Electrochemical capacitors, Solvation effect, Dual-ion cells.

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