| Budget Amount *help |
¥43,550,000 (Direct Cost: ¥33,500,000、Indirect Cost: ¥10,050,000)
Fiscal Year 2021: ¥12,480,000 (Direct Cost: ¥9,600,000、Indirect Cost: ¥2,880,000)
Fiscal Year 2020: ¥12,480,000 (Direct Cost: ¥9,600,000、Indirect Cost: ¥2,880,000)
Fiscal Year 2019: ¥12,480,000 (Direct Cost: ¥9,600,000、Indirect Cost: ¥2,880,000)
Fiscal Year 2018: ¥6,110,000 (Direct Cost: ¥4,700,000、Indirect Cost: ¥1,410,000)
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| Outline of Final Research Achievements |
Highly concentrated electrolytes containing alkali metal salts were prepared, and the coordination structure of alkali metal ions was analyzed by spectroscopic methods. Transport properties and electrochemistry of the highly concentrated electrolytes (HCEs) were investigated. In the HCEs with certain solvents such as sulfones and dinitriles, alkali metal ions exchanged the ligands (solvent and anion) dynamically and diffused more rapidly than the ligands, i.e., hopping conduction of alkali metal ion emerged in the HCEs. The high transference numbers of alkali metal ions were effective in suppressing the concentration polarization and in achieving a relatively high-rate capability of alkali metal batteries.
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