| Budget Amount *help |
¥17,550,000 (Direct Cost: ¥13,500,000、Indirect Cost: ¥4,050,000)
Fiscal Year 2019: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Fiscal Year 2018: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Fiscal Year 2017: ¥5,850,000 (Direct Cost: ¥4,500,000、Indirect Cost: ¥1,350,000)
Fiscal Year 2016: ¥5,980,000 (Direct Cost: ¥4,600,000、Indirect Cost: ¥1,380,000)
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| Outline of Final Research Achievements |
The realization of all-solid-state batteries is critical for large-scale applications. In this work, we used a cutting-edge neutron diffractometer and analysis programs of the Rietveld and maximum entropy methods to determine ions diffusion pathways in the crystalline solid electrolyte. For the glassy solid electrolyte, the three-dimensional atomic configurations and conduction pathways of ions were clarified by reverse Monte Carlo modeling and bond valence sum imaging programs.
Especially, we focused to determine the F ions diffusion pathways in the superior solid electrolyte Ba0.6La0.4F2.4. We showed that the excessive F ions, located at the specific interstitial sites, migrate to the neighboring F ion sites based on the interstitialcy diffusion mechanism at the operating temperature for all-solid-state fluoride shuttle batteries(FSBs). Understanding the diffusion mechanism of F ions plays a key role in the development of solid electrolytes for FSBs.
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