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Improved thermoelectric properties of SnS synthesized by chemical precipitation

机译：通过化学沉淀法合成的SnS的改进的热电性能

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Sulfur compounds have been considered as potential thermoelectric materials due to recently reported high ZT values. However, the synthetic methods for these compounds are too expensive or complicated to be applied to large-scale production. Among these compounds, tin sulfide (SnS) has attracted increasing attention not only because of its extremely low thermal conductivity (below 1.0?W (m K)?1) but also its earth-abundant resources. Mechanical alloying and solvothermal method have been adopted to synthesize SnS as thermoelectric materials, but these preparation processes are either expensive or complicated. Here, a simple chemical precipitation method was developed to synthesize high-performance SnS by using analytically pure compounds as raw materials. The highest ZT value of 0.41 with a very low thermal conductivity of 0.29 W (m K)?1 and a large Seebeck coefficient of 403 μV K?1 is obtained at 848 K. The ZT value is two times higher than that of SnS samples synthesized by mechanical alloying, and our work provides a simple new method to obtain SnS with high ZT value, which will help its mass production in the future.
机译：由于最近报道的高 ZT 值，硫化合物被认为是潜在的热电材料。然而，这些化合物的合成方法太昂贵或太复杂而不能用于大规模生产。在这些化合物中，硫化锡（SnS）不仅因为其极低的导热率（低于1.0？W（m K） ？1 而引起了越来越多的关注。其丰富的地球资源。已经采用机械合金化和溶剂热法来合成SnS作为热电材料，但是这些制备过程既昂贵又复杂。在这里，开发了一种简单的化学沉淀方法，以分析纯的化合物为原料合成高性能的SnS。 ZT 的最大值为0.41，导热系数非常低，仅为0.29 W（m K） ？1 ，塞贝克系数为403μV K ？1 在848 K时获得。 ZT 值是通过机械合金化合成的SnS样品的两倍高，我们的工作提供了一种简单的新方法来获得具有高 ZT 值的SnS，这将有助于将来的批量生产。

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