Interfacial behaviors of p-type CeyFexCo4-xSb12/Nb thermoelectric joints

doi:10.1142/S1793604720510200

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	Interfacial behaviors of p-type CeyFexCo4-xSb12/Nb thermoelectric joints
	Chu, J; Gu, M; Liu, RH; Bai, SQ; Shi, X; Chen, LD
	2020-07-05
Source Publication	FUNCTIONAL MATERIALS LETTERS
ISSN	1793-6047
Issue	5
Subtype	Article
Abstract	Interfacial diffusions and/or chemical reactions are one of the key issues for the reliability of CoSb3-based skutterudite thermoelectric (TE) joint, especially for the p-type joint, which limits the applications of TE devices. We investigate the interfacial evolution for p-type CeyFexCo4-xSb12/Nb joints (y = 0.5-1, x = 2, 3, 4) and combine the previous study on n-type Yb0.3Co4Sb12/Nb joint to demonstrate the effect of TE materials on the interfacial microstructure and interfacial resistivity. The reaction-diffusion kinetic analysis shows that the TE materials has little effect on chemical reactions but strongly influence the Sb diffusions. The low energy barrier of Sb diffusion leads to the absent phase decomposition of skutterudites in CeyFexCo4-xS12/Nb joints. The interfacial resistivity of CeyFexCo4-xS12/Nb joints is related with Fe content and the interfacial reaction layer (IRL) growth. In addition, since the interfacial reaction layer growth rate and interfacial resistivity of CeyFexCo4-xS12/Nb joints are both low, Nb is an adequate barrier layer candidate material.
DOI	10.1142/S1793604720510200
WOS Keyword	POWER-GENERATION ; SKUTTERUDITES ; EVOLUTION ; PROGRESS
Language	英语
WOS Research Area	Materials Science
Publisher	WORLD SCIENTIFIC PUBL CO PTE LTD
Citation statistics
Document Type	期刊论文
Identifier	http://ir.sic.ac.cn/handle/331005/27921
Collection	中国科学院上海硅酸盐研究所
Recommended Citation GB/T 7714	Chu, J,Gu, M,Liu, RH,et al. Interfacial behaviors of p-type CeyFexCo4-xSb12/Nb thermoelectric joints[J]. FUNCTIONAL MATERIALS LETTERS,2020(5).
APA	Chu, J,Gu, M,Liu, RH,Bai, SQ,Shi, X,&Chen, LD.(2020).Interfacial behaviors of p-type CeyFexCo4-xSb12/Nb thermoelectric joints.FUNCTIONAL MATERIALS LETTERS(5).
MLA	Chu, J,et al."Interfacial behaviors of p-type CeyFexCo4-xSb12/Nb thermoelectric joints".FUNCTIONAL MATERIALS LETTERS .5(2020).

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