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Lithium Bis(trimethylsilyl) Phosphate (LiTMSP) was incorporated as an electrolyte additive in LiNi0.8Co0.1Mn0.1O2(NCM811)/graphite cells for improving the low-temperature performance. Previously, we reported the bi-functional roles of LiTMSP for LiNi0.5Mn1.5O4/graphite cells, which are hydrogen fluoride (HF) scavenger and film-forming agent. In this work, NCM811/graphite cells with LiTMSP (1 wt%) have better rate performance at -10 C than cells without LiTMSP. This is due to the reduced resistance of NCM811/graphite cells with the addition of LiTMSP, resulting from LiTMSP induced-surface film generated on graphite electrodes which has improved lithium-ion conduction.

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Journal of the Electrochemical Society





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This work is licensed under a Creative Commons Attribution 4.0 License.



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