Affiliation:
1. State Key Laboratory of Chemical Resource Engineering Beijing Key Laboratory of Electrochemical Process and Technology of Materials Beijing University of Chemical Technology Beijing 10029 China
2. Department of Chemistry University College London 20 Gordon Street London WC1H 0AJ UK
Abstract
AbstractWith the continuously growing demand for wide‐range applications, lithium‐ion batteries (LIBs) are increasingly required to work under conditions that deviate from room temperature (RT). However, commercial electrolytes exhibit low thermal stability at high temperatures (HT) and poor dynamic properties at low temperatures (LT), hindering the operation of LIBs under extreme conditions. The bottleneck restricting the practical applications of LIBs has promoted researchers to pay more attention to developing a series of innovative electrolytes. This review primarily covers the design of electrolytes for LIBs from a temperature adaptability perspective. First, the fundamentals of electrolytes concerning temperature, including donor number (DN), dielectric constant, viscosity, conductivity, ionic transport, and theoretical calculations are elaborated. Second, prototypical examples, such as lithium salts, solvent structures, additives, and interfacial layers in both liquid and solid electrolytes, are presented to explain how these factors can affect the electrochemical behavior of LIBs at high or low temperatures. Meanwhile, the principles and limitations of electrolyte design are discussed under the corresponding temperature conditions. Finally, a summary and outlook regarding electrolytes design to extend the temperature adaptability of LIBs are proposed.
Funder
National Natural Science Foundation of China
Fundamental Research Funds for the Central Universities
Cited by
5 articles.
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