Charging Ahead/All Charged Up: New Technology Goes The Extra Mile for Extreme-Fast Charging of Electric Vehicles

Realizing extreme fast charging (XFC) in lithium-ion batteries for electric vehicles is still challenging due to the insufficient lithium-ion transport kinetics, especially in the electrolyte. Herein, a novel high-performance electrolyte is proposed and tested in pilot-scale, 2-Ah pouch cells. The origin of improved electrochemical performance is comprehensively studied via various characterizations, suggesting that the proposed electrolyte exhibits high ionic conductivity and excellent electrochemical stability at high charging rate of 6-C. Therefore, the high performance electrolyte filled pouch cells deliver improved discharge specific capacity and excellent long-term cyclability up to 1500 cycles under XFC conditions, which is superior to the conventional state-of-the-art baseline electrolyte.