期刊
CHEMISTRY-A EUROPEAN JOURNAL
卷 27, 期 64, 页码 15842-15865出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.202101407
关键词
electrode; lithium-ion batteries; low-temperature electrolyte; solid electrolyte interphase; solvation structure
资金
- National Natural Science Foundation of China [22122904, 21978281, 11974150, 22109155]
- Scientific and Technological Developing Project of Jilin Province [YDZJ202101ZYTS022]
- Open Program of Key Laboratory of Rare Earth Resource Utilization of Changchun Institute of Applied Chemistry, Chinese Academy of Sciences [RERU2020016]
- Independent Research Project of the State Key Laboratory of Rare Earth Resources Utilization, Changchun Institute of Applied Chemistry [110005R086]
Studies have shown that in cold regions and seasons, lithium-ion batteries without thermal protection can cause the electrolyte to thicken, reducing the transport capability of Li+ and affecting battery performance and cycle life. Therefore, the design of low-temperature electrolytes has become increasingly important.
Lithium-ion batteries have dominated the energy market from portable electronic devices to electric vehicles. However, the LIBs applications are limited seriously when they were operated in the cold regions and seasons if there is no thermal protection. This is because the Li+ transportation capability within the electrode and particularly in the electrolyte dropped significantly due to the decreased electrolyte liquidity, leading to a sudden decline in performance and short cycle-life. Thus, design a low-temperature electrolyte becomes ever more important to enable the further applications of LIBs. Herein, we summarize the low-temperature electrolyte development from the aspects of solvent, salt, additives, electrolyte analysis, and performance in the different battery systems. Then, we also introduce the recent new insight about the cation solvation structure, which is significant to understand the interfacial behaviors at the low temperature, aiming to guide the design of a low-temperature electrolyte more effectively.
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