| Budget Amount *help |
¥185,770,000 (Direct Cost: ¥142,900,000、Indirect Cost: ¥42,870,000)
Fiscal Year 2020: ¥21,190,000 (Direct Cost: ¥16,300,000、Indirect Cost: ¥4,890,000)
Fiscal Year 2019: ¥34,970,000 (Direct Cost: ¥26,900,000、Indirect Cost: ¥8,070,000)
Fiscal Year 2018: ¥31,070,000 (Direct Cost: ¥23,900,000、Indirect Cost: ¥7,170,000)
Fiscal Year 2017: ¥39,130,000 (Direct Cost: ¥30,100,000、Indirect Cost: ¥9,030,000)
Fiscal Year 2016: ¥59,410,000 (Direct Cost: ¥45,700,000、Indirect Cost: ¥13,710,000)
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| Outline of Final Research Achievements |
A novel battery architecture and its manufacturing process were proposed and developed to meet society's high demand for high energy-density rechargeable batteries. Since high-capacity active materials such as silicon and sulfur undergo large volume changes as a large amount of lithium ions move in and out of them, reversible operation was realized by holding them in electrically conductive and mechanically flexible sponge films of carbon nanotubes. The “soft battery” that maintains a constant volume and works stably while having shrinking/expanding cathode/anode during charge (and vice versa during discharge) was developed, and a high energy density was achieved.
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