Lithium Bis(trimethylsilyl) Phosphate as an Electrolyte Additive to Improve the Low-Temperature Performance for LiNi0.8Co0.1Mn0.1O2/Graphite Cells
Date of Original Version
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.
Publication Title, e.g., Journal
Journal of the Electrochemical Society
Kim, Jongjung, Venkata A.K. Adiraju, Oh B. Chae, and Brett L. Lucht. "Lithium Bis(trimethylsilyl) Phosphate as an Electrolyte Additive to Improve the Low-Temperature Performance for LiNi0.8Co0.1Mn0.1O2/Graphite Cells." Journal of the Electrochemical Society 168, 8 (2021). doi: 10.1149/1945-7111/ac1b00.
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