欢迎访问《电化学(中英文)》期刊官方网站,今天是

电化学(中英文) ›› 2012, Vol. 18 ›› Issue (4): 314-317.  doi: 10.61558/2993-074X.2923

• 化学电源近期研究专辑(武汉大学 杨汉西教授主编) • 上一篇    下一篇

颗粒粒径与硫酸处理对竹碳电极电化学性能影响的研究

姚煜, 余爱水*   

  1. 复旦大学 上海市分子催化和功能材料重点实验室,化学系,新能源研究院,上海200438
  • 收稿日期:2011-11-24 修回日期:2012-02-17 出版日期:2012-08-28 发布日期:2012-02-22
  • 通讯作者: 余爱水 E-mail:Asyu@fudan.eud.cn
  • 基金资助:

    国家自然科学基金项目(No. 21173054)和上海市分子催化和功能材料重点实验室(No. 08DZ2270500)资助

Influences of Particle Size and Sulfuric Acid Treatment on the Electrochemical Performance of Bamboo Charcoal

 YAO  Yu, YU  Ai-Shui*   

  1. Department of Chemistry, Institute of New Energy, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai 200438, China
  • Received:2011-11-24 Revised:2012-02-17 Published:2012-08-28 Online:2012-02-22
  • Contact: YU Ai-Shui E-mail:Asyu@fudan.eud.cn

摘要: 将竹碳进行球磨和硫酸处理,比较颗粒粒径和硫酸处理时间对竹碳电极电化学性能的影响. 结果表明,5 μm平均粒径的竹碳电极具有较好的充放电效率,而硫酸处理可有效提高材料的放电容量,18 h硫酸处理的竹碳电极首次放电比容量可达328.2 mAh?g-1,50次循环后其比容量仍保持302.3 mAh?g-1,显示出优异的循环寿命.

关键词: 竹碳, 负极材料, 锂离子电池

Abstract: The bamboo charcoal had been milled and treated by sulfuric acid. The influences of as-prepared material particle size and sulfuric acid treatment on the electrochemical performance had been studied. The result displays that the bamboo charcoal with mean particle size about 5 μm has the best first coulombic efficiency. Sulfuric acid treatment could raise the discharge capacity of bamboo charcoal, and the first discharge capacity of 328.2 mAh.g-1 was obtained with the bamboo charcoal treated by sulfuric acid for 18 h. Furthermore, the capacity of 302.3 mAh.g-1 could be maintained for 50 cycles, showing good cycle performance.

Key words: bamboo charcoal, anode, lithium ion battery

中图分类号: