期刊
ACS APPLIED MATERIALS & INTERFACES
卷 13, 期 49, 页码 59538-59545出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.1c18493
关键词
high temperature; high voltage; LCO; lithium-ion; electrolyte additive; hydroxamates
资金
- U.S. Department of Energy, Office of Energy Efficiency and Renewable Energy (EERE), Office of Vehicle Technologies (VTO) [DE-AC02-06CH11357]
Lithium-ion batteries are now used in various applications, requiring stability to a broad range of conditions. A novel additive is reported to protect positive electrodes from elevated temperatures and voltages, showing potential for enhancing cell performance.
Lithium-ion batteries (LIBs) are being used in locations and applications never imagined when they were first conceived. To enable this broad range of applications, it has become necessary for LIBs to be stable to an ever broader range of conditions, including temperature and energy. Unfortunately, while negative electrodes have received a great deal of focus in electrolyte development, stabilization of positive electrodes remains an elusive target. Here, we report a novel additive that shows the ability to protect positive electrodes against elevated temperatures and voltages. This additive can be used in small quantities, and its targeted behavior allows it to remain functional in complex electrolyte packages. This can prove an effective approach to targeting specific aspects of cell performance.
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