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采用水热法制备了一系列具有片状形貌的(Ca0.85OH)1.16CoO2热电材料,并研究了Nd掺杂对该材料结构及热电性能的影响.结果表明,所制备的样品均为p型材料,在473K以下,材料的热电系数随着Nd含量的增加而增大;Nd掺杂后,材料的载流子浓度和载流子迁移率均发生变化,因此材料的电导率随着Nd含量的增加先增大后减小;在573K时,(Ca0.75Nd0.1OH)1.16CoO2材料的功率因子达到7.06×10-5W/(m·K2).
A series of (Ca0.85OH) 1.16CoO2 thermoelectric materials with flake morphology were prepared by hydrothermal method and the effects of Nd doping on the structure and thermoelectric properties of the material were investigated. The results show that the prepared samples are all p Type material, below 473K, the thermoelectric coefficient of the material increases with the increase of Nd content. After Nd doping, the carrier concentration and carrier mobility of the material all change. Therefore, the conductivity of the material changes with Nd At 573K, the power factor of (Ca0.75Nd0.1OH) 1.16CoO2 reached 7.06 × 10-5 W / (m · K2).