## ＜紀要論文＞Oxidation Behavior of Electrolytes Used in Lithium

作成者 著者識別子 作成者名 所属機関 所属機関名 Department of Applied Science for Electronics and Materials, Interdisciplinary Graduate School of Engineering Sciences, Kyushu University 九州大学大学院総合理工学研究科量子プロセス理工学専攻 著者識別子 作成者名 所属機関 所属機関名 Department of Applied Science for Electronics and Materials, Interdisciplinary Graduate School of Engineering Sciences, Kyushu University 九州大学大学院総合理工学研究科量子プロセス理工学専攻 著者識別子 作成者名 所属機関 所属機関名 Department of Applied Science for Electronics and Materials, Interdisciplinary Graduate School of Engineering Sciences, Kyushu University 九州大学大学院総合理工学研究科量子プロセス理工学専攻 英語 九州大学大学院総合理工学府 Interdisciplinary Graduate School of Engineering Sciences, Kyushu University 2000-09 22 2 167 172 Version of Record open access https://doi.org/10.15017/16590 The current-potential relationships for the electrochemical oxidation of organic solvent electrolytes on microelectrodes are confirmed for various lithium salts, namely ${\rm LiClO}_4$, ${\rm LiBF}_4$..., ${\rm LiCF}_3{\rm SO}_3$ and ${\rm LiPF}_6$. The oxidation is expected to occur by means of a two stage process; the chemical degradation of the solvent followed by the electrochemical generation of anion radical species, and the direct electrochemical oxidation of the solvent. The dependence of the oxidation current on temperature and the lithium salt concentration confirms this two step reaction feature. In other words, a reaction based on electrochemically generated anion radicals seems to occur below 4.8V vs. Li/Li$^+$ and direct oxidation of the solvent occurs above 4.8V. Above 4.8V, we cannot disregard the distribution of the diffusion-limiting current of the anion radical into the whole oxidation current.続きを見る

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レコードID 16590 査読有 九州大学大学院総合理工学報告 || 22(2) || p167-172 Engineering sciences reports, Kyushu University || 22(2) || p167-172 http://www.tj.kyushu-u.ac.jp/ http://www.tj.kyushu-u.ac.jp/info/online/ oxidation lithium Ion Batteries 1346-7883 2010.03.09 2020.11.27