Yttrium oxide decoration facilitated optimization of n-type skutterudites for enhanced thermoelectric performance

被引：0

作者：

Cao, Lei ^{[1
]}

Liu, Lin ^{[1
]}

Luo, Kaiyi ^{[1
]}

Qian, Pingping ^{[1
]}

Chen, Haowen ^{[1
]}

Deng, Yixiao ^{[1
]}

Yang, Lei ^{[3
]}

Wu, Xiaoyong ^{[4
]}

Tang, Jun ^{[1
,2
]}

机构：

[1] Sichuan Univ, Inst Nucl Sci & Technol, Key Lab Radiat Phys & Technol, Minist Educ, Chengdu 610064, Peoples R China

[2] Sichuan Univ, Coll Phys, Chengdu 610064, Peoples R China

[3] Sichuan Univ, Sch Mat Sci & Engn, Chengdu 610064, Peoples R China

[4] Nucl Power Inst China, Sci & Technol Reactor Fuel & Mat Lab, Chengdu 610213, Sichuan, Peoples R China

来源：

CHEMICAL PHYSICS LETTERS | 2025年 / 863卷

关键词：

Thermoelectrics; Skutterudites; Yb; 0.3; Co; 4; Sb; 12; Heterointerfaces; YB; FRACTION;

D O I：

10.1016/j.cplett.2025.141879

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Skutterudites (SKDs) are promising thermoelectric (TE) materials due to their cost-effectiveness and favorable electrical properties. However, their high thermal conductivity limits thermoelectric conversion efficiency. Herein, Y2O3 nanoparticles (NPs)-decorated n-type Yb0.3Co4Sb12 were prepared by spark plasma sintering (SPS). The heterointerfaces created by Y2O3 nanoparticles enhance charge carrier localization through O-Sb hybridization and O-Co bonding, which increases the Seebeck coefficient. Additionally, heterointerfaces scatter phonons, reducing thermal conductivity. Consequently, a figure of merit (ZT) value of similar to 1.48 at 773 K and an average ZT(ave) of similar to 1.0 (293-823 K) were achieved in this work.

引用

页数：7

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