Lithium Bis(trimethylsilyl) Phosphate as an Electrolyte Additive to Improve the Low-Temperature Performance for LiNi0.8Co0.1Mn0.1O2/Graphite Cells

Authors

Jongjung Kim, University of Rhode Island
Venkata A.K. Adiraju, University of Rhode Island
Oh B. Chae, University of Rhode Island
Brett L. Lucht, University of Rhode Island

Document Type

Article

Date of Original Version

8-1-2021

Abstract

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

Volume

168

Issue

8

Citation/Publisher Attribution

Kim, Jongjung, Venkata A. 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.

Creative Commons License

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