[14a-K209-1~11] 1.4 Energy conversion, storage, resources and environment

9:15 AM - 9:30 AM JST(12:15 AM - 12:30 AM UTC)

[14a-K209-2] Synthesis, conductive properties and average, electronic and local structure analysis of NASICON-type Li_1.5Al_0.5Ge_1.5-xM_x(PO₄)₃ [M=Mn, V, Mo, Ni]

〇Yuta Masuda¹, Chiaki Ishibashi¹, Naoto Kitamura¹, Yasushi Idemoto¹ (1.Tokyo Univ. of Sci)

Keywords:

all-solid-state batteries,solid-state electrolytes,crystal structure

All-solid-state lithium-ion batteries have been attracting attention in recent years with the spread of electric vehicles, and the creation of new solid-state electrolytes is indispensable to improve their performance. As a candidate, NASICON-type Li_1.5Al_0.5Ge_1.5(PO₄)₃ materials have attracted much attention1. Against this background, we synthesized Li_1.5Al_0.5Ge_1.5-xM_x(PO₄)₃ (M=Mn, V, Mo, Ni) and investigated the composition dependence of its electrical conductivity properties. The correlation between composition and average, electronic, and local structure and conductivity was discussed based on Rietveld analysis using neutron and synchrotron X-ray diffraction and PDF analysis using synchrotron total scattering data.