| Budget Amount *help |
¥43,940,000 (Direct Cost: ¥33,800,000、Indirect Cost: ¥10,140,000)
Fiscal Year 2019: ¥5,850,000 (Direct Cost: ¥4,500,000、Indirect Cost: ¥1,350,000)
Fiscal Year 2018: ¥5,720,000 (Direct Cost: ¥4,400,000、Indirect Cost: ¥1,320,000)
Fiscal Year 2017: ¥15,470,000 (Direct Cost: ¥11,900,000、Indirect Cost: ¥3,570,000)
Fiscal Year 2016: ¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2015: ¥12,220,000 (Direct Cost: ¥9,400,000、Indirect Cost: ¥2,820,000)
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| Outline of Final Research Achievements |
The lithium-air battery is the secondary battery with the largest theoretical capacity. However, high rate discharge required for practical use cannot be realized. Because the low oxygen diffusivity in the electrolyte limits the discharge performance. In this study, low energy X-ray CT, XRD, and microfiber type oxygen sensor are used to elucidate and improve the oxygen transport and reaction phenomena in the cathode.
As a result, it was clarified that sufficient oxygen was not transported into the deep part of the cathode. The discharge reaction and precipitation of reaction products occurred near the electrode surface. Furthermore, it was shown that high rate discharge can be realized by improving the electrode structure and the impregnation state of the electrolyte.
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