Cobalt-free composite-structured cathodes with lithium-stoichiometry control for sustainable lithium-ion batteries.

ABSTRACT: Lithium-ion batteries play a crucial role in decarbonizing transportation and power grids, but their reliance on high-cost, earth-scarce cobalt in the commonly employed high-energy layered Li(NiMnCo)O₂ cathodes raises supply-chain and sustainability concerns. Despite numerous attempts to address this challenge, eliminating Co from Li(NiMnCo)O₂ remains elusive, as doing so detrimentally affects its layering and cycling stability. Here, we report on the rational stoichiometry control in synthesizing Li-deficient composite-structured LiNi_0.95Mn_0.05O₂, comprising intergrown layered and rocksalt phases, which outperforms traditional layered counterparts. Through multiscale-correlated experimental characterization and computational modeling

SUBMITTER: Chen K 

PROVIDER: S-EPMC10782004 | biostudies-literature | 2024 Jan

REPOSITORIES: biostudies-literature