Sr and Co Co-doping Stabilizes Ultrahigh-Nickel Single-Crystal Cathodes for High-Performance Lithium-Ion Batteries

Abstract

Ultrahigh-nickel cathodes show promise but face challenges like surface microcracks, structural dislocations, and oxygen release, leading to performance loss. This work proposes Sr and Co co-doping in the single-crystal structure to enhance its stability and electrochemical performance, offering insights for designing durable, high-performance lithium-ion battery materials.