高等学校化学学报 ›› 2004, Vol. 25 ›› Issue (6): 1120.

• 研究论文 • 上一篇    下一篇

纳米碳与石墨碳复合材料的电化学性能

周德凤1,2, 赵艳玲1, 马越1, 郝婕1, 谢海明1, 王荣顺1   

  1. 1. 东北师范大学化学学院功能材料化学研究所, 长春 130024;
    2. 长春工业大学生物工程学院, 长春 130012
  • 收稿日期:2003-05-15 出版日期:2004-06-24 发布日期:2004-06-24
  • 通讯作者: 王荣顺(1934年出生),男,教授,博士生导师,从事应用量子化学和锂离子电池材料研究.E-mail:wangrs@nenu.edu.cn E-mail:wangrs@nenu.edu.cn
  • 基金资助:

    科技型中小企业技术创新基金(批准号:00C26222200964)资助

Electrochemical Performance of Carbon Nanotube and Graphite Composite Materials

ZHOU De-Feng1,2, ZHAO Yan-Ling1, MA Yue1, HAO Jie1, XIE Hai-Ming1, WANG Rong-Shun1   

  1. 1. Institute of Functional Material Chemistry, Faculty of Chemistry, Northeast Normal University, Changchun 130024, China;
    2. School of Biological Engineering, Changchun University of Technology, Changchun 130012, China
  • Received:2003-05-15 Online:2004-06-24 Published:2004-06-24

摘要: 在天然石墨(NG)中掺杂不同比例的碳纳米管(CNT)得到纳米碳与石墨碳的复合材料.电化学测试结果表明,在NG中掺杂质量分数为10%的CNT所得复合材料的电化学性能最好.经过20次充放电循环,该复合材料的放电容量比同样条件下的石墨提高15.9%.纳米碳管的中空式结构和不易塌陷的特点使复合材料的充放电容量和循环稳定性明显提高.

关键词: 锂离子电池, 纳米材料, 石墨, 复合材料

Abstract: When natural graphite(NG) is doped with different ratios of carbon nanotube(CNT),a composite material formed by nano-C and graphite-C was obtained. The measurements show that the complex with 10% CNT(in mass fraction) possesses the best electrochemical performance. Undergoing charge/discharge cycles for 20 times,the charge capacity of this material is obviously improved,15.9% more than that of pure graphite without CNT. Due to the mid-hollow structure and anti-collapse property for CNT,this composite material would increase charge/discharge capacity and stable cycle property.

Key words: Lithium ion battery, Nano-material, Graphite, Composite material

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