Development of all solid state Li ion battery with ultra high power density via incorporating dielectric nano interface
| Project/Area Number |
18H01707
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Review Section |
Basic Section 26020:Inorganic materials and properties-related
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| Research Institution | Okayama University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
中山 将伸 名古屋工業大学, 工学(系)研究科(研究院), 教授 (10401530)
秋本 順二 国立研究開発法人産業技術総合研究所, エレクトロニクス・製造領域, 首席研究員 (20356348)
岸本 昭 岡山大学, 自然科学研究科, 教授 (30211874)
安井 伸太郎 東京工業大学, 科学技術創成研究院, 助教 (40616687)
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| Project Period (FY) |
2018-04-01 – 2021-03-31
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| Project Status |
Completed (Fiscal Year 2020)
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| Budget Amount *help |
¥17,290,000 (Direct Cost: ¥13,300,000、Indirect Cost: ¥3,990,000)
Fiscal Year 2020: ¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2019: ¥7,020,000 (Direct Cost: ¥5,400,000、Indirect Cost: ¥1,620,000)
Fiscal Year 2018: ¥5,850,000 (Direct Cost: ¥4,500,000、Indirect Cost: ¥1,350,000)
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| Keywords | リチウムイオン電池 / 全固体電池 / 誘電体界面 / 界面電荷移動 / 誘電体 / 全固体リチウムイオン電池 / 分極 / 急速充放電 / 高速充放電 / 電荷移動抵抗 / 分極種 |
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| Outline of Final Research Achievements |
We report fast charge transfer along the Li-ion pathway via incorporating an adequate dielectric layer at the electrolyte－electrode interface for the liquid electrolyte based lithium ion batteries (Conv. LIB). The dielectric interface was applied to the all solid state lithium ion batteries (ASS LIB). First, the fast Li transfer route and the involved elementary reactions at the interface were determined in the Conv. LIB. The dielectric interface was then utilized to the quasi-ASS LIB as well as sulfide based ASS LIB. The contribution of dielectric layer to ASS LIB interface was consequently interpreted by the experimental results obtained in Conv. LIB.
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| Academic Significance and Societal Importance of the Research Achievements |
近年，難燃性の無機固体電解質を用いた全固体リチウムイオン二次電池(全固体LIB)の開発が急速に進んでいる．全固体電池の最大の課題は，固体界面の高い電荷移動抵抗であり，この抵抗低減が今後，全固体LIBを社会実装していく上で必要不可欠となる．我々は，これまで従来液系LIBにおいて，誘電分極界面を介した新しい電荷輸送モデルを見出している．全固体LIBにおいても高速界面電荷移動が実現できれば，我が国の蓄電池学術分野に革新的な知見を与えることは間違いない．
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Report
(4 results)
Research Products
(26 results)
