Fast‐charging of lithium‐ion batteries: A review of electrolyte design aspects

Abstract Lithium‐ion batteries (LIBs) with fast‐charging capabilities have the potential to overcome “range anxiety” issue and drive wider adoption of electric vehicles. The U.S. Advanced Battery Consortium has set a goal fast charging, which requires charging 80% battery's state charge within 15 min. However, polarization effects under conditions can lead electrode structure degradation, electrolyte side reactions, lithium plating, temperature rise, are highly linked thermodynamic kinetic properties electrolytes. conventional nonaqueous electrolytes used in LIBs consist carbonate cannot support without compromising performance lifespan. This review outlines challenges requirements suitable for fast‐charging. Additionally, recent developments from four key perspectives: additives, low‐viscosity co‐solvents, high concentration or localized high‐concentration electrolytes, advanced summarized. Furthermore, this provides insights design based on mechanism process offers an overview current future direction field.