Li-ion batteries with fast charging capabilities will push the adoption of electric vehicles (EVs). The United States Department of Energy has stated goals of achieving “Extreme Fast Charging” (XFC) – charging to 80% capacity in 15 minutes or under – by 2028. The liquid electrolyte plays an extremely important role in achieving this goal. This review considers recent progress made in electrolyte development for high-rate charge applications. Approaches such as using low-viscosity co-solvents, highly concentrated electrolytes, and large polyanions are considered. New methods for measuring electrolyte transport properties are reviewed. The importance of electrolyte additives is also discussed. Finally, the importance of considering cell lifetime in the development of electrolytes for fast charge applications is stressed.

具有快速充电功能的锂离子电池将推动电动汽车（EV）的采用。美国能源部已经提出了到2028年在15分钟或15分钟内充电达到80％容量的“极速充电”（XFC）的目标。液体电解质在实现这一目标中发挥着极其重要的作用。这篇评论考虑了在高速率充电应用的电解质开发方面的最新进展。考虑使用诸如低粘度助溶剂，高浓度电解质和大聚阴离子的方法。综述了测量电解质传输性能的新方法。还讨论了电解质添加剂的重要性。最后，强调了在快速充电应用的电解质开发中考虑电池寿命的重要性。