Development of the titanium oxynitride thermoelectric material

氮氧化钛热电材料的研制

• 批准号: 21760571
• 负责人: MIKAMI Masashi
• 金额: $ 2.91万
• 依托单位: National Institute of Advanced Industrial Science and Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Young Scientists (B)
• 财政年份: 2009
• 资助国家: 日本
• 起止时间: 2009 至 2010
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-21760571/
• 关键词: 熱電変換材料; 酸化チタン; 酸窒化物; マグネリ相; 熱電特性; セラミックス; 窒化; チタン; ゼーベック係数; 導電率; 熱伝導率

The partially nitrogen-substituted titanium oxide was synthesized by a solid state reaction of TiO_2 and TiN. It was confirmed that the single phase of each magneli structure, Ti_nO_<2n-1> (n=9~5), can be obtained by the adjustment of mixing ratio in raw powders. In the magneli titanium oxynitride, electrical conductivity was significantly improved compared to TiO_2 while Seebeck coefficient was decreased. In addition, the periodical defect in the crystal structure of magneli phase induces phonon scattering, resulting in the reduction of thermal conductivity. From these effects, the oxynitride titanium exhibits the much higher thermoelectric performance compared to TiO_2.

通过TiO_2和TiN的固相反应合成了部分氮取代的二氧化钛。经证实，通过调整原料粉末中的混合比，可以获得各种magneli结构的单相Ti_nO_<2n-1>（n=9~5）。 Magneli氮氧化钛的电导率较TiO_2显着提高，同时塞贝克系数降低。此外，马涅利相晶体结构中的周期性缺陷会引起声子散射，导致热导率降低。从这些效应来看，与TiO_2相比，氮氧化物钛表现出更高的热电性能。

项目成果

Thermoelectric Properties of TiO_2-based Materials

TiO_2基材料的热电性能

• 发表时间: 2009
• 作者: 三上祐史;尾崎公洋;小林慶三
• 通讯作者: 小林慶三

THERMOELECTRIC PROPERTIES OF TiO_2-BASED MATERIALS

TiO_2基材料的热电性能

• 发表时间: 2009
• 作者: 三上祐史