采用固相反应法,在常压空气中烧结制备出了(Ca1-x-yAgxLay)3Co4O9(x=0、0.1,y=0;x=0.1,y=0.02、0.04、0.06)系列块体样品;通过X射线衍射和扫描电镜对样品的物相组成和微观结构进行了表征;研究了Ag、La双掺杂对样品热电性能参数Seebeck系数、电阻率和热导率的影响.结果表明,双掺杂可以进一步提高材料热电性能,且掺杂浓度的选择对热电性能有较大的影响;在873 K时,x=0.1,y=0.02样品的ZT值最大.
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