| Budget Amount *help |
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2017: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2016: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2015: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
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| Outline of Final Research Achievements |
The structural and dynamical properties of all-solid-state lithium-ion batteries, particularly solid electrolyte materials, were studied using neutron and synchrotron X-ray scattering, or quantum beams. We developed a cell for measuring neutron diffraction data of the Li7P3S11 solid electrolyte under an applied voltage (or in-situ neutron diffraction data). It was found that no structural change occurs under the applied voltage. The conduction pathways of Li ions in the Li2S-GeS2 glasses and Li10GeP2S12 solid electrolyte were visualized using the technique based on the bond valence sum approach. Furthermore, we directly observed the fast Li-ion diffusion in the Li7P3S11 solid electrolyte using quasielastic neutron scattering.
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