| Impedance Characterization of the Film Formation Process at the Graphite Anodes |
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| 引用本文： | Bo Hua DENG,Yong Fang LI (Center for Molecular Science,Institute of Chemistry,Chinese Academy of Sciences,Beijing100080) Hua Quan YANG (Department of Chemistry,Peking University,Beijing 100875). Impedance Characterization of the Film Formation Process at the Graphite Anodes[J]. 中国化学快报, 2000, 11(10): 915-918 |
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| 作者姓名： | Bo Hua DENG Yong Fang LI (Center for Molecular Science Institute of Chemistry Chinese Academy of Sciences Beijing100080) Hua Quan YANG (Department of Chemistry Peking University Beijing 100875) |
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| 作者单位： | Bo Hua DENG，Yong Fang LI (Center for Molecular Science，Institute of Chemistry，Chinese Academy of Sciences，Beijing100080) Hua Quan YANG (Department of Chemistry，Peking University，Beijing 100875) |
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| 基金项目： | the National 863 project (KJ951-A1-501) |
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| 摘 要： | A passive SEI (Solid electrolyte interface) film had been suggested to be formed on the graphite anodes with the irreversible capacity loss at ca. 1.20V in the first charge process by Fong et al. And the capacity loss at ca. 0.75V was originated from the electrolyte decomposition on the new surface created by the exfoliation of the graphite structure for solvent co-intercalation1. Aurbach et al studied the surface chemistry of the insulating film on the graphite electrodes in different elect…
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Impedance Characterization of the Film Formation Process at the Graphite Anodes |
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| Bo Hua DENG,Yong Fang LI,Hua Quan YANG. Impedance Characterization of the Film Formation Process at the Graphite Anodes[J]. Chinese Chemical Letters, 2000, 11(10): 915-918 |
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| Authors: | Bo Hua DENG Yong Fang LI Hua Quan YANG |
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| Abstract: | In this paper, the formation mechanism of the passive SEI film at the natural graphite anodes was investigated with the electrochemical impedance spectroscopy (EIS). A characteristic semicircle was observed in the lower frequency range of the EIS spectrum for the irreversible charge process (lithium intercalation) at ca. 0.75V, 0.40V and 0.20V. |
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| Keywords: | Electrochemical impedance spectroscopy surface film graphite anodes Li-ion battery. |
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