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High-efficiency half-Heusler thermoelectric modules enabled by self-propagating synthesis and topologic structure optimization
Xing, Yunfei; Liu, Ruiheng; Liao, Jinchen; Zhang, Qihao; Xia, Xugui; Wang, Chao; Huang, Hui; Chu, Jing; Gu, Ming; Zhu, Tiejun; Zhu, Chenxi; Xu, Fangfang; Yao, Dongxu; Zeng, Yuping; Bai, Shengqiang; Uher, Ctirad; Chen, Lidong
2019-11-01
Source PublicationENERGY & ENVIRONMENTAL SCIENCE
ISSN1754-5692
Volume12Issue:11Pages:3390
SubtypeArticle
AbstractCombining high thermoelectric (TE) performance, excellent mechanical properties, and good thermal stability, half-Heusler materials show great potential in real applications, such as industrial waste heat recovery. However, the materials synthesis technology developed in the laboratory scale environment cannot fulfil the requirements of massive device fabrication. In this work, a batch synthesis utilizing the self-propagating high-temperature synthesis (SHS) method was used to prepare state-of-the-art n-type Zr0.5Hf0.5NiSn0.985Sb0.015 and p-type Zr0.5Hf0.5CoSb0.8Sn0.2 half-Heusler alloys. Due to the nonequilibrium reaction process, dense dislocation arrays were introduced in both n-type and p-type materials, which greatly depressed the lattice thermal conductivity. As a consequence, the zT values of samples cut from ingots weighing a few hundreds of grams compared favorably with those prepared from few gram laboratory size pellets. Based on the high TE performance, a three-dimensional finite element model encompassing all relevant parameters was applied to optimize the topological structures of both a half-Heusler single-stage module and a half-Heusler/Bi2Te3 segmented module. The optimized modules attained record-high conversion efficiencies of 9.6% and 12.4% for the single-stage and the segmented module, respectively. The work documents a comprehensive processing of novel TE materials culminating in the assembly of efficient TE modules. As such, it paves the way for widespread commercial applications of TE power generation.
DOI10.1039/c9ee02228g
WOS KeywordFIGURE-OF-MERIT ; CONVERSION EFFICIENCY ; PERFORMANCE ; SKUTTERUDITE ; POWER ; ENHANCEMENT ; ZRNISN ; PBTE
Language英语
WOS Research AreaChemistry ; Energy & Fuels ; Engineering ; Environmental Sciences & Ecology
PublisherROYAL SOC CHEMISTRY
Citation statistics
Document Type期刊论文
Identifierhttp://ir.sic.ac.cn/handle/331005/27516
Collection中国科学院上海硅酸盐研究所
Recommended Citation
GB/T 7714
Xing, Yunfei,Liu, Ruiheng,Liao, Jinchen,et al. High-efficiency half-Heusler thermoelectric modules enabled by self-propagating synthesis and topologic structure optimization[J]. ENERGY & ENVIRONMENTAL SCIENCE,2019,12(11):3390.
APA Xing, Yunfei.,Liu, Ruiheng.,Liao, Jinchen.,Zhang, Qihao.,Xia, Xugui.,...&Chen, Lidong.(2019).High-efficiency half-Heusler thermoelectric modules enabled by self-propagating synthesis and topologic structure optimization.ENERGY & ENVIRONMENTAL SCIENCE,12(11),3390.
MLA Xing, Yunfei,et al."High-efficiency half-Heusler thermoelectric modules enabled by self-propagating synthesis and topologic structure optimization".ENERGY & ENVIRONMENTAL SCIENCE 12.11(2019):3390.
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