[14p-P07-1~61] 1 Interdisciplinary Physics and Related Areas of Science and Technology (Poster)

[14p-P07-44] Atomic configuration analysis and topological analysis
of Li_1.3Nb_0.3M_0.4O₂ (M: 3d transition metal)-based positive electrode materials

〇Yuna Hayashi¹, Naoto Kitamura¹, Chiaki Ishibashi¹, Yasushi Idemoto¹ (1.Tokyo Univ. of Sci)

Keywords:

Lithium ion battery,cathode material,local structure

Li_1.3Nb_0.3M_0.4O₂ (M: 3d transition metal) with a disordered rock salt-type structure has been investigated as a positive electrode material for lithium ion batteries. It is also known that there are local cation orderings in this material, but the atomic arrangement of the cation is not well understood. In this study, we focused on Li_1.3Nb_0.3M_0.4O₂ (M = Fe, etc.) and investigated its electrode properties and atomic arrangement by analyzing total scattering data. The topological analysis based on persistent homology was performed on the obtained atomic arrangement, and the cluster structure was investigated.