Regulating Solvation Structure of Acetonitrile-based Electrolyte for Li/NMC811 Battery Cycled at Low Temperature

An acetonitrile-based localized high concentration electrolyte has been developed for low temperature lithium metal batteries. The corresponding Li/NMC811 cell delivers a high capacity of 113 mA h g −1 at −40 °C with 85.5% capacity retention.