期刊
ACS APPLIED MATERIALS & INTERFACES
卷 14, 期 9, 页码 11910-11918出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.1c23934
关键词
solid-electrolyte-interface; graphite electrodes; butyronitrile-based electrolytes; low-temperature performance; lithium-ion batteries
资金
- Applied Battery Research (ABR) for Transportation Program
- Office of Science, U.S. Department of Energy [DE-AC02-06CH11357]
This paper investigates the crucial issue of lithium-ion batteries at low temperatures and proposes a solution.
Low-temperature electrolytes (LTEs) have been considered as one of the most challenging aspects for the wide adoption of lithium-ion batteries (LIBs) since the SOA electrolytes cannot sufficiently support the redox reactions at LT resulting in dramatic performance degradation. Although many attempts have been taken by employing various noncarbonate solvent electrolytes, there was a lack of fundamental understanding of the limiting factors for low-temperature operations (e.g., -20 to -40 degrees C). In this paper, the crucial role of the solid-electrolyte-interface (SEI) in LIB performance at low temperature using a butyronitrile (BN)-based electrolyte was demonstrated. These results suggested that an additive formed SEI with low resistance and low charge transfer dictates the LT performance in terms of capacity and cycle life, presenting a useful guideline in designing new electrolytes to address the LT issue.
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