2022 Fiscal Year Final Research Report
Development of synthesis techniques to create a variety of compound nanosheet bundles and their applications to energy devices
| Project/Area Number |
20K04560
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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 21050:Electric and electronic materials-related
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| Research Institution | Shizuoka University |
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Principal Investigator |
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| Project Period (FY) |
2020-04-01 – 2023-03-31
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| Keywords | シリサイド / 化学気相成長法 / 結晶成長 / ナノシート / ナノ構造制御 / テンプレート法 / 熱電特性 |
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| Outline of Final Research Achievements |
Synthesis technique of novel nanosheet bundles composed of various compounds was developed. Using CaSi2 powders or CaSi2 micro-walls grown on Si substrates as templates, Mg2Si nanosheet bundles were synthesized by heat treatment under MgCl2/Mg atmosphere. In addition, the synthesis of Mg2Si nanosheet bundles with improved structural quality was developed using Mg melt and MgCl2-CaCl2 related molten salt. Furthermore, it was also shown that the structural quality and its homogeneity of MnSi1.7 nanosheet bundles were improved when using MnCl2-CaCl2 related molten salts during the heat treatment. In addition, CrSi2 nanorod/Si nanosheet composites, Sr(Ca)-Si compound nanoflakes, and MgO-based nanoflakes were synthesized.
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| Free Research Field |
電気電子材料
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| Academic Significance and Societal Importance of the Research Achievements |
従来のSiナノシート束の作製時において異種原子を添加する事により化合物ナノシート束を作製できた事，層状の結晶であるMgCl2より層状のMg(OH)2を介して積層したMgOナノフレークを作製出来た事，さらにフレーク状の副産物を伴いSr(Ca)-Si系化合物ナノフレークを作製できた事より，さらに様々なバラエティーに富んだナノシート束を作製出来る事が期待できる．また溶融金属・溶融塩を用いた合成が粉末材料においても有効である事が示された事は，粉末材料を作製する新たな結晶成長方法として発展が期待できる．さらに作製したシリサイドナノシート束は熱電発電に有効と期待できる．
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