无机材料学报

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纳米炭/石墨碳混合材料的电化学性质研究

周德凤1,2; 马越1; 赵艳玲1; 郝婕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:2003-08-25 修回日期:2003-10-27 出版日期:2004-09-20 网络出版日期:2004-09-20

Electrochemical Performance of the Composite Materials of Nano-Carbon and Graphite-Carbon

ZHOU De-Feng1,2; MA Yue1; ZHAO Yian-Ling1; HAO Jie1; WANG Rong-Shun1   

  1. 1.Institute of Functional Material Chemistry; Northeast Normal University; Changchun 130024; China; 2.School of Biological Engineering; Changchun University of Technology; Changchun 130012; China
  • Received:2003-08-25 Revised:2003-10-27 Published:2004-09-20 Online:2004-09-20

摘要: 天然石墨(NG)分别掺入碳纳米管(CNT)和纳米炭粉(CNP),得到两种纳米炭与石墨碳的混合材料.通过比较NG、CWI、CNP及其混合材料分别作为锂离子电池负极时的电化学性能,发现碳纳米管的首次不可逆容量损失很大,它的混合材料也不适合作锂离子电池的负极材料;纳米炭粉与石墨有很好的协同效应,该混合材料具有良好的电化学性能,相同条件下与天然石墨相比,其充放电比容量分别提高9.8%和9.4%.

关键词: 锂离子电池, 天然石墨, 混合材料, 电化学性能

Abstract: The composite materials of natural graphite (NG) and nano-scaled carbon were obtained by doping
with carbon nanotube (CNT) and carbon nanopowder (CNP) respectively. The Electrochemical performance of NG, CNT, CNP and their composite
materials were investigated as the anode materials of lithium ion batteries. The study shows carbon nanotube has large irreversible capacity loss and
its composite material is not suitable to anode for lithium ion batteries. There are good cooperation effect between CNP and NG, their composite
material shows very good electrochemical performance, compared with NG, its charge and discharge specific capacities increase by 9.8% and 9.4%,
respectively.

Key words: lithium ion battery, natural graphite, composite material, electrochemical performance

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