| 几种石墨材料的电化学性能测试 |
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| 引用本文： | 颉莹莹,李雅楠,杨晖.几种石墨材料的电化学性能测试[J].电源技术,2012,36(2):182-185. |
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| 作者姓名： | 颉莹莹 李雅楠 杨晖 |
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| 作者单位： | 南京工业大学材料科学与工程学院,江苏南京,210009 |
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| 摘 要： | 对几种天然石墨和人造石墨材料进行了X射线衍射光谱法(XRD)表征和电化学性能测试。结果表明,所有的样品都具有良好的石墨层状结构及较高的可逆比容量。人造石墨中存在少量无定形碳,具有比理论比容量更高的比容量。天然石墨不可逆比容量损失较大,主要是由于其较小的颗粒粒径和大的比表面积而引起的。
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| 关 键 词： | 锂离子电池 负极材料 天然石墨 人造石墨 |
Electrochemical performance of several kinds of graphite |
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| XIE Ying-ying
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LI Ya-nan
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YANG Hui.Electrochemical performance of several kinds of graphite[J].Chinese Journal of Power Sources,2012,36(2):182-185. |
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| Authors: | XIE Ying-ying LI Ya-nan YANG Hui |
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| Affiliation: | (College of Materials Science and Engineering,Nanjing University of Technology,Nanjing Jiangsu 210009,China) |
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| Abstract: | Several kinds of natural graphite and artificial graphite samples were characterized by XRD,and their electrochemical performance was tested.The results show that all samples have well-ordered graphitized structures and exhibit good reversible capacity.A capacity higher than theoretical capacity of artificial graphite(AG2) is attributed to the presence of small amount of disordered carbon.The natural graphite(NG2) shows a large irreversible capacity loss due to its small particles size and thus high specific surface area. |
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| Keywords: | lithium-ion batteries anode material natural graphite artificial graphite |
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