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Spark erosion: A high production rate method for producing Bi _(0.5)Sb _(1.5)Te _3 nanoparticles with enhanced thermoelectric performance

机译:火花腐蚀:生产具有增强的热电性能的Bi _(0.5)Sb _(1.5)Te _3纳米粒子的高生产率方法

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摘要

We report a new spark erosion technique for producing high-quality thermoelectric nanoparticles at a remarkably high rate and with enhanced thermoelectric properties. The technique was utilized to synthesize p-type Bi _(0.5)Sb _(1.5)Te _3 nanoparticles with a production rate as high as 135gh ~1, using a relatively small laboratory apparatus and low energy consumption. The compacted nanocomposite samples made from these nanoparticles exhibit a well-defined, 20-50nm size nanograin microstructure, and show an enhanced figure of merit, ZT, of 1.36 at 360K. Such a technique is essential for providing inexpensive, oxidation-free nanoparticles which are required for the fabrication of high performance thermoelectric devices for power generation from waste heat, and for refrigeration.
机译:我们报告了一种新的火花腐蚀技术,该技术可以显着提高生产率并提高热电性能,从而生产高质量的热电纳米颗粒。该技术利用相对较小的实验室设备和较低的能耗,以高达135gh〜1的产率合成了p型Bi _(0.5)Sb _(1.5)Te _3纳米粒子。由这些纳米颗粒制成的压实纳米复合材料样品具有定义明确的20-50nm尺寸的纳米颗粒微观结构,并且在360K时的品质因数ZT增强为1.36。这种技术对于提供廉价的,无氧化的纳米颗粒是必不可少的,纳米颗粒是制造高性能热电器件以利用废热发电和制冷所必需的。

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