Core-shell structure of LiMn₂O₄ cathode material reduces phase transition and Mn dissolution in Li-ion batteries.

ABSTRACT: Although the LiMn₂O₄ cathode can provide high nominal cell voltage, high thermal stability, low toxicity, and good safety in Li-ion batteries, it still suffers from capacity fading caused by the combination of structural transformation and transition metal dissolution. Herein, a carbon-coated LiMn₂O₄ cathode with core@shell structure (LMO@C) was therefore produced using a mechanofusion method. The LMO@C exhibits higher cycling stability as compared to the pristine LiMn₂O₄ (P-LMO) due to its high conductivity reducing impedance growth and phase transition. The carbon shell can reduce direct contact between the electrolyte and the cathode reducing side reactions and Mn dissolution. Thus, the cylindrical cell of LMO@C//graphite

SUBMITTER: Tomon C 

PROVIDER: S-EPMC9814138 | biostudies-literature | 2022 Apr

REPOSITORIES: biostudies-literature