Enhancing the thermoelectric performance of filled skutterudite nanocomposites in a wide temperature range via electroless silver plating

Enhancing the thermoelectric performance of filled skutterudite nanocomposites in a wide temperature range via electroless silver plating
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通过化学镀银提高填充方钴矿纳米复合材料在宽温度范围内的热电性能

DOI:
10.1016/j.scriptamat.2017.11.019
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发表时间:
2018-03
期刊:
影响因子:
6
通讯作者:
Lianjun Wang
Lianjun Wang
中科院分区:
材料科学1区
文献类型:
--
作者:
Peng Chen;Zhenxing Zhou;Juanjuan Zhu;Lianjun Wang

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迄今为止,填充方钴矿的高热电性能只能在相对较高的温度下获得,这严重限制了其应用。为了提高方钴矿(Yb 0. 35 Co 4Sb 12)的热电性能,采用化学镀法制备了掺银纳米颗粒的复合材料。通过控制Ag纳米颗粒的含量和均匀性,可以优化块状复合材料的热电性能。结果表明,在450 ~ 800 K温度范围内,具有最佳Ag含量的Yb 0.35Co4Sb 12复合材料的Seebeck系数和功率因数均高于0.8,在603 K时达到峰值1.0。
So far high thermoelectric performance of filled skutterudite can only be obtained at relatively high temperature, which severely limits its application. Here, Yb-filled skutterudite (Yb0.35Co4Sb12) composites incorporated with silver nanoparticles are fabricated via electroless plating for achieving enhanced thermoelectric performance. The content and homogeneity of Ag nanoparticle can be well controlled to optimize the thermoelectric properties of bulk composite. As a result, the Yb0.35Co4Sb12composite with optimum Ag content shows remarkably improved Seebeck coefficient and power factor, which leads to high ZT values above 0.8 from 450 to 800 K and a peak value of 1.0 at 603 K.
实现%20a%20热电%20转换%20效率%20of%2012%%20in%20铋%20碲化物/方钴矿%20分段%20模块%20through%20全参数%20优化%20和%20能量损失%20最小化%20集成
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