Development of Inorganic Material Synthesis Technology for the Creation of Novel Thermoelectric Conversion Materials

2021 Fiscal Year Final Research Report

• Project/Area Number: 19H00833
• Research Category: Grant-in-Aid for Scientific Research (A)
• Allocation Type: Single-year Grants
• Section: 一般
• Review Section: Medium-sized Section 26:Materials engineering and related fields
• Research Institution: Waseda University
• Principal Investigator: Kuroda Kazuyuki 早稲田大学, 理工学術院, 名誉教授 (90130872)
• Co-Investigator(Kenkyū-buntansha): 森 孝雄 国立研究開発法人物質・材料研究機構, 機能性材料研究拠点, グループリーダー (90354430)
• Project Period (FY): 2019-04-01 – 2022-03-31
• Keywords: ナノ多孔体 / 熱電変換材料 / 金属酸化物 / 鋳型合成法 / 自己組織化

Outline of Final Research Achievements

We developed the synthesis of nanoporous materials to establish a design guideline for nanoporous materials to increase the performance of thermoelectric materials for metal oxide systems. Simultaneous control of the factors related to the thermoelectric performance, such as composition, pore structure, pore diameter, and pore wall crystallinity, was achieved in various nanoporous metal oxides. These results have deepened the knowledge of the relation between pore structure and thermal and electrical conductivities. We found the possibility to realize independent control of thermal and electrical conductivities by nanostructure control, which has been challenging to achieve hitherto.

Free Research Field

無機合成化学

Academic Significance and Societal Importance of the Research Achievements

持続可能な社会の実現に向けて、未利用エネルギーを用いたエネルギー変換技術の確立は喫緊の課題である。熱電変換材料は廃熱として捨てられているエネルギーを効果的に利用して電気エネルギーを獲得できるため、その実用化に資する材料研究は重要である。本研究課題ではナノ構造化による熱電変換性能向上の設計指針の確立に貢献する基礎科学的な成果が得られ、このような基盤技術は今後の材料開発への活用が期待できる。