| Budget Amount *help |
¥17,290,000 (Direct Cost: ¥13,300,000、Indirect Cost: ¥3,990,000)
Fiscal Year 2022: ¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Fiscal Year 2021: ¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2020: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2019: ¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
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| Outline of Final Research Achievements |
Fused donor-acceptor molecular systems composed of electron-donating tetrathiafulvalene (TTF) and electron-accepting p-benzoquinone (BQ) were developed to achieve higher capacity, improved cycle characteristics due to lower solubility, and increased active material allocation due to improved conductivity. Among the obtained molecules, the redox behavior of the derivatives with readily soluble substituents in a solution was investigated by cyclic voltammetry. Charge-discharge properties of rechargeable batteries were investigated using the poorly soluble derivatives as positive electrode active materials. It is noted that the discharge capacity and discharge energy density of the rechargeable battery using the unsubstituted derivative of TTF-TTF-BQ fused triad molecules were improved to 299 mAh/g and 855 mWh/g, respectively.
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