| Budget Amount *help |
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2015: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2014: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2013: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
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| Outline of Final Research Achievements |
Ionic liquids are promising candidate of safe electrolyte for next-generation rechargeable batteries with high energy densities because those have excellent non-flammability unlike conventional organic solvent. In this study, we applied ionic liquid electrolytes comprised of amide-based anions showing easier desolvation and cations promoting smoother interfacial Li transfer. The anode properties were studied for electrodes consisted of Si particles coated with rutile TiO2, which enables fast Li diffusion and has been developed by the principal investigator of this project. The TiO2-coated Si electrode in the ionic liquid electrolyte exhibited better high-rate performances compared with that in the conventional organic electrolyte. The electrode showed excellent cycling performance with twice as large reversible capacity as the theoretical capacity of conventional graphite anode.
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