フルテキストファイル
著者
Domi Yasuhiro Department of Chemistry and Biotechnology, Graduate School of Engineering, Tottori University / Center for Research on Green Sustainable Chemistry, Tottori University 鳥取大学研究者総覧 KAKEN研究者をさがす
Usui Hiroyuki Department of Chemistry and Biotechnology, Graduate School of Engineering, Tottori University / Center for Research on Green Sustainable Chemistry, Tottori University 鳥取大学研究者総覧 KAKEN研究者をさがす
Iwanari Daichi Department of Chemistry and Biotechnology, Graduate School of Engineering, Tottori University / Center for Research on Green Sustainable Chemistry, Tottori University
Sakaguchi Hiroki Department of Chemistry and Biotechnology, Graduate School of Engineering, Tottori University / Center for Research on Green Sustainable Chemistry, Tottori University 鳥取大学研究者総覧 KAKEN研究者をさがす
キーワード
Li-Si alloy
lithiu-ion battery
negative electrode
pre-lithiation
silicon
NDC分類
5類 技術・工学・工業
抄録
The effect of pre-lithiation on the electrochemical performance of Si negative electrodes for lithium-ion batteries was studied. A pre-volume-expansion of Si induced by the pre-lithiation is expected to decrease the relative change in volume of Si during charge-discharge reactions. Suppression of change in volume of Si should improve the cycle performance, the Coulombic efficiency, and so on. When the mechanically pre-doped Li was extracted from Li-Si alloy during the first cycle, an alloy electrode exhibited the poor cycle performance just like a Si-alone electrode. On the other hand, the Li1.00Si electrode exhibited the improved cycle performance and higher Coulombic efficiency under the discharge cut-off potential of 0.7 and 0.5 V, respectively. The electrode also showed 1.5 times longer cycle life compared to the Si-alone electrode when the charge capacity and the cut-off potential were limited. These results demonstrated that the appropriate mechanical pre-lithiation helps to improve the poor electrochemical performance of the Si negative electrodes.
出版者
The Electrochemical Society
資料タイプ
学術雑誌論文
外部リンク
http://jes.ecsdl.org/content/164/7/A1651
ISSN・ISBN
1945-7111
掲載誌名
Journal of the Electrochemical Society
最新掲載誌名
Journal of the Electrochemical Society
164
7
開始ページ
A1651
終了ページ
A1654
発行日
2017-06-02
DOI
著者版フラグ
著者版
著作権表記
© 2017 The Electrochemical Society
掲載情報
Yasuhiro Domi, Hiroyuki Usui, Daichi Iwanari, and Hiroki Sakaguchi Effect of Mechanical Pre-Lithiation on Electrochemical Performance of Silicon Negative Electrode for Lithium-Ion Batteries Journal of the Electrochemical Society 2017 164: A1651-A1654.
部局名
工学部・工学研究科
言語
英語