(Invited) Novel Disordered Rocksalt Electrodes for Safe, Fast Charging Lithium-Ion Batteries

Abstract

Rechargeable lithium-ion batteries with high energy density that can be safely charged and discharged at high rates are desired for electrified transportation and other applications. In this talk, I will report the discovery of novel disordered rocksalt oxides (DRSOs) electrodes with near-optimal intercalation potentials for safe, fast-charging batteries. In particular, we will demonstrate that the outstanding electrochemical performance of these DRSO electrodes can be attributed to a hitherto undiscovered redistributive lithium intercalation reaction with low energy barriers. Beyond the immediate practical applications, the discovery of this novel high-rate intercalation reaction opens a completely new space for the search of metal oxide electrodes for fast-charging, long-life lithium-ion batteries.