Complex oxide materials for potential thermoelectric applications
Complex oxide materials for potential thermoelectric applications
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DOI：
10.1557/mrs2006.46
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发表时间：
2006-03-01
期刊：
影响因子：
5
通讯作者：
Funahashi, R
中科院分区：
文献类型：
--
作者：
Koumoto, K;Terasaki, I;Funahashi, R
层状CoO2材料是潜在热电应用的优秀候选者。它们的单晶在高于800 K的温度下在空气中显示出良好的p型热电性能。最近，通过对电子结构和晶体结构的讨论，阐明了热电性能的机制。为了制造出具有良好发电性能的热电组件，热电材料与金属电极的连接必须具有低的接触电阻和高的机械强度。已经发现，使用包括p型和n型氧化物粉末的Ag浆料可以形成良好的结。自旋熵贡献的热电势的作用，将与强电子相关和三角晶格。
Layered CoO2 materials are excellent candidates for potential thermoelectric applications. Their single crystals show good p-type thermoelectric properties at temperatures higher than 800 K in air. Recently, the mechanism of thermoelectric properties was clarified through a discussion of electronic and crystallographic structure. In order to fabricate thermoelectric modules possessing good power-gene ration properties, thermoelectric materials and metallic electrodes must be connected with low contact resistance and high mechanical strength. It has been found that good junctions can be formed using Ag paste including p- and n-type oxide powders. The role of spin entropy contributions to thermopower will be presented, in connection with strong electron correlation and triangular lattices.