Title of article
Safety improvement of lithium ion batteries by organo-fluorine compounds
Author/Authors
Matsuda، نويسنده , , Yuki and Nakajima، نويسنده , , Tsuyoshi and Ohzawa، نويسنده , , Yoshimi and Koh، نويسنده , , Meiten and Yamauchi، نويسنده , , Akiyoshi and Kagawa، نويسنده , , Michiru and Aoyama، نويسنده , , Hirokazu، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2011
Pages
8
From page
1174
To page
1181
Abstract
Thermal stability, electrochemical oxidation stability and charge/discharge characteristics of natural graphite powder were investigated by mixing of five fluoro-carbonates with 1 mol/L LiClO4–EC/DEC/PC (1:1:1 vol.). DSC study revealed that thermal stability of the electrolyte solution was improved by mixing of fluoro-carbonates by 10.0–33.3 vol.%. Electrochemical oxidation stability was also improved. Oxidation currents for Pt electrode significantly decreased by mixing of fluoro-carbonates. In the fluoro-carbonate-mixed electrolyte solutions, electrochemical reduction of PC decreased with increasing concentration of fluoro-carbonate and current density. As a result, first coulombic efficiency for natural graphite electrode increased, that is, irreversible capacity decreased in the fluoro-carbonate-mixed solutions.
Keywords
Graphite electrode , Organo-fluorine compound , thermal stability , Oxidation stability , Lithium ion battery
Journal title
Journal of Fluorine Chemistry
Serial Year
2011
Journal title
Journal of Fluorine Chemistry
Record number
1611497
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