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首页> 外文期刊>Journal of Physics, D. Applied Physics: A Europhysics Journal >Half Heusler compounds: promising materials for mid-to-high temperature thermoelectric conversion
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Half Heusler compounds: promising materials for mid-to-high temperature thermoelectric conversion

机译：Heal Heusler化合物：具有中至高温热电转换的有希望的材料

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摘要

Half-Heusler (HH) compounds (space group Fm (3) over barm) have garnered increasing attention in recent years in the thermoelectric community. Three decades ago, refractory RNiSn HH compounds (R represents refractory metals such as Hf, Zr, Ti) were found to be narrow-gap semiconductors with large Seebeck coefficients in 100s of micro-volt per Kelvin. Today, HH compounds have emerged as promising thermoelectric materials in the intermediate temperature range (400 degrees C-800 degrees C). HH materials are endowed with good thermal stability and scalability. Thermoelectric n-p modules based on HH materials demonstrate conversion efficiency near 10% and power density output near 9 W cm(-2). The objective of this article is to present a historical account of the research and development of thermoelectric HH compounds. Particularly, there have been notable achievements since 2012 thanks to the emergence of new approaches. As a result, ZT has risen from similar to 1 to 1.5. The various advances made since the early 1990s to the present are recounted by categorizing HH materials into three generations (Gen): Gen-1 Gen-2, and Gen-3 HH materials.
机译：半人机（HH）化合物（SPACE GROUP FM（3）在BARM上）近年来在热电界近年来越来越受到关注。三十年前，发现难治性RNISN HH化合物（R代表难熔金属，例如HF，Zr，Ti）是窄间隙半导体，其100多个微伏/克尔文中的大塞匹克系数。如今，HH化合物已成为中间温度范围内有前途的热电材料（400℃-800℃）。 HH材料具有良好的热稳定性和可扩展性。基于HH材料的热电N-P模块表明转换效率接近10％，功率密度输出近9W cm（-2）。本文的目的是展示热电HH化合物的研发的历史叙述。特别是，由于新方法的出现，自2012年以来一直存在显着的成就。结果，ZT从类似于1到1.5的比例上升。自20世纪90年代初期以来的各种进展通过将HH材料分为三代（Gen）：Gen-1 Gen-2和Gen-3 HH材料来叙述。

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