Chemical doping and property tuning in the solid-solution of polyoxometalates
| Project/Area Number |
18K05060
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Review Section |
Basic Section 32020:Functional solid state chemistry-related
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| Research Institution | Yamaguchi University |
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Principal Investigator |
Ryo Tsunashima 山口大学, 大学院創成科学研究科, 准教授 (70466431)
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| Project Period (FY) |
2018-04-01 – 2022-03-31
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| Project Status |
Completed (Fiscal Year 2021)
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| Budget Amount *help |
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2020: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2019: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2018: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
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| Keywords | 固溶体 / 分子結晶 / ポリオキソメタレート / 電気伝導性 / 混晶 |
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| Outline of Final Research Achievements |
For polyoxometalates, molecular Mo and W oxides, mixed crystals consisting of multiple clusters with different electronic states are prepared to realise systems with macroscopic properties that vary with the composition ratio. Various crystalline samples were prepared with parameters such as cation size, valence and redox activity, and physical properties such as solubility, redox activity, electrical conductivity and dielectric properties were investigated with composition ratio. Based on the results obtained, we aimed development in the materials field of heterogeneous catalysts, solid-phase electrolytes, battery materials and electronics materials.
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| Academic Significance and Societal Importance of the Research Achievements |
Siや金属酸化物などの原子性結晶では、ホスト化合物中の原子Aと類似の大きさだが電子状態が異なる原子Bをゲストとして結晶中に導入する。また、遷移金属イオンなどの異なる原子価が可能な場合、酸化還元的過程を介して混合原子価状態にできる。また、合金は置換・混合する量が不純物程度を超える点でドーピングとは異なるが類似の化学である。そこで、触媒や電子材料として注目されている分子性の金属酸化物であるポリオキソメタレートの結晶性固体について、化学的・物理的性質を固溶化により制御できるような可能性を探索した。
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Report
(5 results)
Research Products
(28 results)
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[Book] 機能材料2020
Author(s)
森田萩乃、綱島亮
Total Pages
8
Publisher
シーエヌシー出版
Related Report
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