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Half-Heusler Thermoelectric Module with High Conversion Efficiency and High Power Density
Yu, JJ; Xing, YF; Hu, CL; Huang, ZJ; Qiu, QY; Wang, C; Xia, KY; Wang, ZY; Bai, SQ; Zhao, XB; Chen, LD; Zhu, TJ
2020-07-01
Source PublicationADVANCED ENERGY MATERIALS
ISSN1614-6832
Issue25
SubtypeArticle
AbstractHalf-Heusler (HH) compounds have shown great potential in waste heat recovery. Among them, p-type NbFeSb and n-type ZrNiSn based alloys have exhibited the best thermoelectric (TE) performance. However, TE devices based on NbFeSb-based HH compounds are rarely studied. In this work, bulk volumes of p-type (Nb0.8Ta0.2)(0.8)Ti0.2FeSb and n-type Hf0.5Zr0.5NiSn0.98Sb0.02 compounds are successfully prepared with good phase purity, compositional homogeneity, and matchable TE performance. The peak zTs are higher than 1.0 at 973 K for Hf0.5Zr0.5NiSn0.98Sb0.02 and at 1200 K for (Nb0.8Ta0.2)(0.8)Ti0.2FeSb. Based on an optimal design by a full-parameters 3D finite element model, a single stage TE module with 8 n-p HH couples is assembled. A high conversion efficiency of 8.3% and high power density of 2.11 W cm(-2) are obtained when hot and cold side temperatures are 997 and 342 K, respectively. Compared to the previous TE module assembled by the same materials, the conversion efficiency is enhanced by 33%, while the power density is almost the same. Given the excellent mechanical robustness and thermal stability, matchable thermal expansion coefficient and TE properties of NbFeSb and ZrNiSn based HH alloys, this work demonstrates their great promise for power generation with both high conversion efficiency and high power density.
DOI10.1002/aenm.202000888
WOS KeywordHIGH-TEMPERATURE ; PERFORMANCE ; GENERATION ; REALIZATION ; STABILITY ; FIGURE ; MERIT ; GETE ; PBTE
Language英语
WOS Research AreaChemistry ; Energy & Fuels ; Materials Science ; Physics
PublisherWILEY-V C H VERLAG GMBH
Citation statistics
Cited Times:5[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.sic.ac.cn/handle/331005/28054
Collection中国科学院上海硅酸盐研究所
Recommended Citation
GB/T 7714
Yu, JJ,Xing, YF,Hu, CL,et al. Half-Heusler Thermoelectric Module with High Conversion Efficiency and High Power Density[J]. ADVANCED ENERGY MATERIALS,2020(25).
APA Yu, JJ.,Xing, YF.,Hu, CL.,Huang, ZJ.,Qiu, QY.,...&Zhu, TJ.(2020).Half-Heusler Thermoelectric Module with High Conversion Efficiency and High Power Density.ADVANCED ENERGY MATERIALS(25).
MLA Yu, JJ,et al."Half-Heusler Thermoelectric Module with High Conversion Efficiency and High Power Density".ADVANCED ENERGY MATERIALS .25(2020).
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