Does "zero-strain" lithiated spinel serve as a strain retardant and an irreversible phase transition regulator for layered oxide cathodes?

ABSTRACT: Layered oxide cathodes encounter structural challenges during cycling, prompting the exploration of an ingenious heterostructure strategy, which incorporates stable components into the layered structure as strain regulators to enhance materials cycle stability. Despite considerable research efforts, identifying suitable, convenient, and cost-effective materials and methods remains elusive. Herein, focused on lithium cobalt oxide (LiCoO₂), we utilized its low-temperature polymorph as a strain-retardant embedded within a cathode. Our findings reveal that the low-temperature component, exhibiting zero-strain characteristic, adopts a complex configuration with a predominant lithiated spinel structure, also featuring both cubic-layered and typical-layered configurations. But this com

SUBMITTER: Wu Z 

PROVIDER: S-EPMC11421026 | biostudies-literature | 2024 Sep

REPOSITORIES: biostudies-literature