Oxide Coating Role on the Bulk Structural Stability of Active LiMn₂O₄ Cathodes.

ABSTRACT: The protective coating of the electrode materials is a known source of improvement of the cycling performances in battery devices. In the case of the LiMn₂O₄ cathodes, the coating with a thin alumina layer has been proven to show performance efficiency. However, the precise mechanism of its effect on the performance improvement of the electrodes is still not clear. In this work we investigate alumina-coating-induced effects on the structural dynamics of the active materials in correlation to the modified solid electrolyte interface dynamics. The local structures of coated and uncoated samples at different galvanostatic points are studied by both soft X-ray absorption measurements at the Mn L-edges and O K-edge (in total electron yield mode) and hard X-ray absorption a

SUBMITTER: Paparoni F 

PROVIDER: S-EPMC10184565 | biostudies-literature | 2023 May

REPOSITORIES: biostudies-literature