| 二元共聚物热解碳包覆的石墨负极材料 |
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| 引用本文： | 陈继涛,周恒辉,常文保,慈云祥.二元共聚物热解碳包覆的石墨负极材料[J].物理化学学报,2002,18(2):180-182. |
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| 作者姓名： | 陈继涛 周恒辉 常文保 慈云祥 |
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| 作者单位： | College of Chemistry and Molecular Engineering, Peking University,Beijing 100871 |
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| 摘 要： | 以苯萘二元共聚物包覆天然石墨后进行热处理，用所制备的包覆石墨作为锂离子电池的负极材料，与包覆前石墨材料相比较，可逆容量提高了10％，不可逆容量降低了7％，循环性能也得到了大的改善. X射线分析表明，改性后该石墨晶体中三方石墨的含量增高.
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| 关 键 词： | 锂离子电池 负极材料 包覆天然石墨 苯萘共聚物 |
| 收稿时间： | 2001-08-16 |
| 修稿时间： | 2001年8月16日 |
Pyrolytic Carbon Coated Graphite Anode for Lithium Ion Battery |
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| Chen Ji,Tao,Zhou Heng,Hui,Chang Wen,Bao,Ci Yun,Xiang.Pyrolytic Carbon Coated Graphite Anode for Lithium Ion Battery[J].Acta Physico-Chimica Sinica,2002,18(2):180-182. |
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| Authors: | Chen Ji Tao Zhou Heng Hui Chang Wen Bao Ci Yun Xiang |
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| Institution: | College of Chemistry and Molecular Engineering, Peking University,Beijing 100871 |
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| Abstract: | Carbon coated natural graphite has been prepared by mixing graphite particles with benzene naphthalene copolymer and thermaly treating the mixture under a nitrogen gas flow. The coated natural graphite showed about 10%higher reversible capacity and about 7% lower irreversible capacity as an anode material for lithium ion battery with pristine graphite. The cycling behavior of graphite was also improved after being coated. The X ray diffraction (XRD) results showed that the rhombohedral phase fraction of natural graphite increased after being coated. |
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| Keywords: | Lithium ion battery Anode material Coated natural graphite Benzene naphthalene copolymer |
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