In this work, we focused on Wadsley–Roth phase TiNb2O7 with an octahedral network as a negative electrode material for lithium-ion batteries and investigated the effect of the network structure, which is considered to form Li+ conduction pathways, on the electrode properties. To this end, we prepared samples with different charge/discharge properties and generated atomic configurations that simultaneously reproduce both total scattering and Bragg profile data. Topological analyses based on persistent homology demonstrated that the network disorder significantly degrades the electrode properties.
- Naoto Kitamura
- Hikari Matsubara
- Koichi Hayashi