| Budget Amount *help |
¥25,220,000 (Direct Cost: ¥19,400,000、Indirect Cost: ¥5,820,000)
Fiscal Year 2018: ¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2017: ¥11,570,000 (Direct Cost: ¥8,900,000、Indirect Cost: ¥2,670,000)
Fiscal Year 2016: ¥8,840,000 (Direct Cost: ¥6,800,000、Indirect Cost: ¥2,040,000)
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| Outline of Final Research Achievements |
In the present study, we conducted mechanistic analyses of aqueous Li-air battery using oxygen-peroxide redox couple. The reaction product Li2O2 was obtained using 18O2 labeled gas. The hydrolysis process of the formed Li2O2 proved that the peroxide is originally formed by the 18O2 labeled gas. The rotating ring-disk electrode study proved two electron-transfer process of the aqueous lithium-air system. In addition, the binder materials (such as Nafion) content is crucial for the improvement of the reversibility, because the electrolyte solution confined in the composite electrode initiates an effective precipitation of the Li2O2 to maintain the reversible reaction.
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