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Creation of ZnO nano-bulk thermoelectric conversion materials incorporating metal nanoparticles by using soft-chemical precursors
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- Watanabe Kosuke
- Principal Investigator
- 九州大学
-
- OHTAKI Michitaka
- Research Collaborator
- 九州大
-
- SUEKUNI Koichiro
- Research Collaborator
- 九州大
-
- SUGAHARA Tohru
- Research Collaborator
- 大阪大
-
- SUEMATSU Koichi
- Research Collaborator
- 九州大
About This Project
- Japan Grant Number
- JP16K18248 (JGN)
- Funding Program
- Grants-in-Aid for Scientific Research
- Funding Organization
- Japan Society for the Promotion of Science
Kakenhi Information
- Project/Area Number
- 16K18248
- Research Category
- Grant-in-Aid for Young Scientists (B)
- Allocation Type
-
- Multi-year Fund
- Review Section / Research Field
-
- Science and Engineering > Engineering > Material engineering > Composite materials/Surface and interface engineering
- Research Institution
-
- Kyushu University
- Project Period (FY)
- 2016-04-01 〜 2018-03-31
- Project Status
- Completed
- Budget Amount*help
- 4,160,000 Yen (Direct Cost: 3,200,000 Yen Indirect Cost: 960,000 Yen)
Research Abstract
Nanopowders consisting of ZnO and the Au nanoparticles with diameters of ca. 50 nm and 3 nm were prepared from soft-chemical precursors. Mixtures of this nanopowders and Al2O3 powders were molded, and sintered by using the spark plasma sintering method. The nanocomposites embedding Au nanoparticles (d < 40 nm) in the Al doped ZnO matrix were obtained the addition 0.15 mol% amount of Au. The nanocomposites were achieved not only a decrease in the thermal conductivity due to selective phonon scattering but also an increase in the electrical conductivity at the same time. Consequently, it was shown that nanocomposites incorporating such metal nanoparticles were a guideline for material design of new thermoelectric materials.