Effect of Transitional Metals (Mn and Ni) Substitution in LiCoPO₄ Olivines.

ABSTRACT: Transition metal substitution is a key strategy to optimize the functional properties of advanced crystalline materials used as positive electrodes in secondary lithium batteries (LIBs). Here we investigate the structural alterations in the olivine lattice of Mn and Ni substituted LiCoPO₄ phase and the impact on performance in LIBs. X-ray diffraction (XRD) and extended X-ray absorption experiments have been carried out in order to highlight the structural alterations induced by partial substitution of cobalt by manganese and nickel. XRD analysis suggests that substitution induces an expansion of the lattices and an increase of the antisite disorder between lithium and transition metal ions in the structure. XAS data highlight negligible electronic disorder but a relevant modulat

SUBMITTER: Palumbo O 

PROVIDER: S-EPMC7037934 | biostudies-literature | 2020 Jan

REPOSITORIES: biostudies-literature