期刊
ENERGY & ENVIRONMENTAL SCIENCE
卷 14, 期 2, 页码 995-1003出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/d0ee02791j
关键词
-
资金
- National Key Research and Development Program of China [2018YFB0703600]
- National Natural Science Foundation of China [51625205, 51872314, 51632010]
- China Postdoctoral Science Foundation [2020TQ0330]
- Shanghai Rising-Star Program [19QA1410200]
GeTe-based materials have shown great potential in thermoelectric generators for waste heat recovery. A high-energy conversion efficiency of 7.8% was achieved in a GeTe-based thermoelectric module. By using a high-throughput strategy, Mo was identified as an effective diffusion barrier material, leading to the fabrication of a module with comparable energy conversion efficiency to other materials.
GeTe-Based materials have great potential to be used in thermoelectric generators for waste heat recovery due to their excellent thermoelectric performance, but their module research is greatly lagging behind material research. In this work, we successfully fabricate a GeTe-based thermoelectric module and report a high energy conversion efficiency of 7.8% under a temperature gradient of 500 K. An Sb-, Bi-, and Se-doped GeTe-based material, with a chemical composition of Ge0.92Sb0.04Bi0.04Te0.95Se0.05 and a peak ZT of 2.0 at 700 K, is used to make the p-type legs in the module. By using a high-throughput strategy, Mo is screened from 12 pure metals as an effective diffusion barrier material between the GeTe-based material and the electrode. Based on the optimal geometry predicted by three-dimensional numerical analysis, one eight-couple Ge0.92Sb0.04Bi0.04Te0.95Se0.05/Yb0.3Co4Sb12 TE module is fabricated and evaluated, which shows a comparable energy conversion efficiency with those of skutterudite- and half-Heusler-based modules in a similar temperature range. This study opens the door for the development of GeTe-based modules.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据