| Project/Area Number |
24750191
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Functional materials/Devices
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| Research Institution | National Institute of Advanced Industrial Science and Technology |
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Principal Investigator |
YAO Masaru 独立行政法人産業技術総合研究所, ユビキタスエネルギー研究部門, 主任研究員 (30510060)
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| Project Period (FY) |
2012-04-01 – 2014-03-31
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| Project Status |
Completed (Fiscal Year 2013)
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| Budget Amount *help |
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2013: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2012: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
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| Keywords | リチウム二次電池 / 有機活物質 / レアメタル代替 / レアメタルフリー |
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| Research Abstract |
Using a series of redox active organic compounds, instead of rare (minor) metal oxides, in rechargeable lithium batteries is a way to alleviate the resource problem. To realize such organic rechargeable batteries, the development of a high-performance organic active material, which satisfies both of high capacity and long cycle-life, is indispensable. In this study, we evaluated several organic positive-electrode active materials based on the benzoquinone skeleton, and found a correlation between the cycle-stability and the solubility in the electrolyte solvent. In particular, the introduction of small polar groups was revealed to be an effective way to improve the cycle-life performance of organic active materials without sacrificing the discharge capacities. The obtained experimental results will contribute to the development of a new organic active material that can tolerate many cycles.
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