Mixture oxide with thermoelectric characteristics of the n-type

文件类型：PDF文档
文件大小：1486K
The present invention provides a complex oxide having a composition represented by the formula Ln1-xMxNiOy; wherein Ln is a lanthanide, M is at least one element selected from the group consisting of Na, K, Li, Zn, Pb, Ba, Ca, Al, Bi, and rare earth elements being not the same as Ln; and 01-xMx)2NiOy; wherein Ln is a lanthanide, M is at least one element selected from the group consisting of Na, K, Li, Zn, Pb, Ba, Ca, Al, Bi, and rare earth elements being not the same as Ln; 0<=x<=0.8; and 3.6<=y<=4.4, the complex oxide having a negative Seebeck coefficient at 100° C. or higher. The complex oxide of the invention has a negative Seebeck coefficient and low electrical resistivity and also has excellent heat resistance, chemical durability, etc., and thus can be effectively utilized as an n-type thermoelectric material in air at high temperatures.