摘要
通过高温高压方法合成出稀土元素Sm填充n型方钴矿化合物SmxCo4Sb12（0〈x〈1）,并考察了在室温下Sm填充率对热电性能的影响规律.结果表明：SmxCo4Sb12化合物表现为n型传导;电阻率和Seebeck系数随着合成压力的增加逐渐增加;晶格热导率随着Sm填充分数的增加而降低,在Sm填充量为0.5时达到最小值.室温下Sm0.5Co4Sb12化合物显示最大热电性能指数,其最大无量纲热电性能指数ZTmax值达到0.16.
Sm-filled skutterudite compounds SmxCo4Sb12（0〈x〈1） were successfully synthesized via high-pressure and high-temperature（HPHT） method.The effect of Sm filling rate on thermoelectric properties was investigated at room temperature.Results indicated that electrical resistivity and the absolute value of Seebeck coefficient increased with increasing pressure.The lattice thermal conductivity decreased dramatically and reached the minimum value when the Sm filling fraction was 0.5.A maximum ZT value of 0.16 is obtained for Sm0.5Co4Sb12 at room temperature.
出处
《北华大学学报（自然科学版）》
CAS
2011年第5期539-542,共4页
Journal of Beihua University（Natural Science）
基金
国家自然科学基金项目(50731006,50801030)
关键词
SM
n型方钴矿
高温高压
热电性能
Sm
n-type Skutterudite
HPHT
thermoelectric properties
