Entropy-increased LiMn₂O₄-based positive electrodes for fast-charging lithium metal batteries.

ABSTRACT: Fast-charging, non-aqueous lithium-based batteries are desired for practical applications. In this regard, LiMn₂O₄ is considered an appealing positive electrode active material because of its favourable ionic diffusivity due to the presence of three-dimensional Li-ion diffusion channels. However, LiMn₂O₄ exhibits inadequate rate capabilities and rapid structural degradation at high currents. To circumvent these issues, here we introduce quintuple low-valence cations to increase the entropy of LiMn₂O₄. As a result, the entropy-increased LiMn₂O₄-based material, i.e., LiMn_1.9Cu_0.02Mg_0.02Fe_0.02Zn_0.02Ni_0.02O₄, when tested in non-aqu

SUBMITTER: Zeng W 

PROVIDER: S-EPMC11349939 | biostudies-literature | 2024 Aug

REPOSITORIES: biostudies-literature