화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Journal of Industrial and Engineering Chemistry, Vol.10, No.2, 290-294, March, 2004
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Impedance Studies of the Solid Electrolyte Interface of Carbon Anodes in Lithium Ion Batteries
Kwang-il Chung, Woo-Seong Kim1, Chan-Young Kim2, and Yong-Kook Choi2, †
  • R&R Center, vitzrocell Co. Ltd., Chung-Nam 340-861, Korea
  • 1Technical Center, GISANBTC Co. LTD., Kwangju 500-110, Korea
  • 2Department of Chemistry & PRC/HECS & IBS, Chonnam National University, Kwangju 500-757, Korea
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The electrochemical properties of the solid electrolyte interface (SEI) between the carbon anode and the electrolyte were examined by impedance spectroscopy. Impedance spectroscopy is generally useful for studying the interface between two different phases. The SEI layer was investigated using a unique technique involving d.c. potential steps of the carbon anode. The impedance spectra provided useful information, not only on the electrochemical properties of the SEI layer but also on the relationship between the SEI and the carbon anode, although these components were not investigated in detail. For a clear impedance analysis, we compared two different SEI layers formed on the carbon anode in two different electrolyte systems. Impedance spectra for the SEI layers were compared and analyzed.
Keywords:Lithium ion battery;Impedance spectroscopy;Additive;Carbon anode
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