Contribution of the oxygen extracted from overlithiated layered oxides at high potential to the formation of the interphase
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- 作者：Nicolas Dupré ; ; Nicolas.Dupre@cnrs-imn.fr" class="auth_mail" title="E-mail the corresponding author ; Marine Cuisinier ; Erwan Legall ; Djibril War ; Dominique Guyomard
- 关键词：Li-ion battery ; Surface ; NMR ; LiF ; Parasitic reactions
- 刊名：Journal of Power Sources
- 出版年：2015
- 出版时间：20 December 2015
- 年：2015
- 卷：299
- 期：Complete
- 页码：231-240
- 全文大小：2575 K
文摘
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Quantitative 7Li and 19F NMR allow describing the interphase of Li-rich materials.
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Extracted oxygen leads to exacerbated parasitic reactions with the electrolyte.
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Oxygen extraction at high potential strongly influence the interphase composition.
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Accumulation of fluorophosphates at the positive surface along cycling.