Improved cyclic stability of layered lithium cobalt oxide at high potential via cathode electrolyte interphase formed by 4-(trifluoromethyl) benzonitrile
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- 作者：Xianshu Wanga ; Xiaolin Liaoa ; Wenna Huanga ; Lidan Xinga ; b ; Youhao Liaoa ; b ; Qiming Huanga ; b ; Mengqing Xua ; b ; Weishan Lia ; b ; liwsh@scnu.edu.cn" class="auth_mail" title="E-mail the corresponding author
- 关键词：4-(trifluoromethyl) benzonitrile ; electrolyte additive ; cathode electrolyte interphase ; lithium cobalt oxide ; cyclic stability
- 刊名：Electrochimica Acta
- 出版年：2015
- 出版时间：1 December 2015
- 年：2015
- 卷：184
- 期：Complete
- 页码：94-101
- 全文大小：2748 K
文摘
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4-TB is an effective electrolyte additive for improving the cyclic stability of LiCoO2 under 4.5 V.
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4-TB combines with Co(IV) and is oxidized preferentially forming CEI film on LiCoO2.
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CEI protects LiCoO2 from structural destruction and suppresses electrolyte decomposition.