| 石墨类负极在非对称电化学电容器中的应用 |
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| 引用本文： | 包丽颖,吴锋,苏岳锋. 石墨类负极在非对称电化学电容器中的应用[J]. 电子元件与材料, 2007, 26(3): 20-23 |
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| 作者姓名： | 包丽颖 吴锋 苏岳锋 |
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| 作者单位： | 北京理工大学化工与环境学院,国家高技术绿色材料发展中心,北京,100081;北京理工大学化工与环境学院,国家高技术绿色材料发展中心,北京,100081;北京理工大学化工与环境学院,国家高技术绿色材料发展中心,北京,100081 |
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| 基金项目： | 国家重点基础研究发展计划(973计划) , 国家重点基础研究发展计划(973计划) |
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| 摘 要： | 以天然石墨(G)、中间相碳微球(MCMB)、中间相碳纤维(MCF)等石墨类电极与活性炭电极构成非对称体系,电化学测试表明,电容器的充放电性能与石墨类电极的快速嵌脱锂性能直接相关,其中C/MCMB非对称电容体系表现出良好的高倍率充放电性能,电流密度从20mA/g增至200mA/g,其容量保持率在62%以上;在80mA/g时,C/MCMB非对称电容器的能量密度可为C/C双电层电容器的13.8倍。
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| 关 键 词： | 电子技术 石墨类负极 非对称电化学电容器 双电层电容器 比能量 |
| 文章编号： | 1001-2028（2007）03-0020-04 |
| 修稿时间： | 2006-11-28 |
Application of the graphite negative electrodes in asymmetric electrochemical capacitors |
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| BAO Li-ying,WU Feng,SU Yue-feng. Application of the graphite negative electrodes in asymmetric electrochemical capacitors[J]. Electronic Components & Materials, 2007, 26(3): 20-23 |
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| Authors: | BAO Li-ying WU Feng SU Yue-feng |
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| Abstract: | The asymmetric capacitors using nature graphite (G), meso-carbon microbeads (MCMB), meso-carbon fibre (MCF) as the anode and activated carbon as the cathode were assembled. Electrochemical tests show that the charge/discharge performance of these asymmetric systems is correlated with the lithium intercalation behavior of the graphite materials straightway. The C/MCMB asymmetric system shows a satisfactory high rate performance that its capacitance holding could reach to 62 % when the current density increasing from 20 mA/g to 200 mA/g, and its energy density is 13.8 times that of the electric double layer capacitor at a current density 80 mA/g. |
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| Keywords: | electron technology graphite negative electrodes asymmetric electrochemical capacitor electric double layer capacitor specific energy |
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