Improved thermoelectric performance in the Zintl phase compounds YbZn2−xMnxSb2 via isoelectronic substitution in the anionic framework

2008 ◽  
Vol 104 (1) ◽  
pp. 013705 ◽  
Author(s):  
C. Yu ◽  
T. J. Zhu ◽  
S. N. Zhang ◽  
X. B. Zhao ◽  
J. He ◽  
...  
Keyword(s):  
Thermoelectric Performance ◽  
Zintl Phase ◽  
Anionic Framework

Enhanced thermoelectric performance in Mg3+xSb1.5Bi0.49Te0.01via engineering microstructure through melt-centrifugation

2021 ◽  
Author(s):  
Melis Ozen ◽  
Mujde Yahyaoglu ◽  
Christophe Candolfi ◽  
Igor Veremchuk ◽  
Felix Kaiser ◽  
...  
Keyword(s):  
Thermoelectric Performance ◽  
Zintl Phase

By applying the melt-centrifugation, porosity and dislocations are introduced in the microstructure of the n-type Zintl phase Mg3+xSb1.5Bi0.49Te0.01leading to significantly low κl (∼ 0.33 W m−1 K−1 at 723 K) and enhanced zT (∼ 1.64 at 723 K).

Enhanced thermoelectric performance through optimizing structure of anionic framework in AgCuTe-based materials

2020 ◽  
Vol 386 ◽  
pp. 123917 ◽  
Author(s):  
Weiming Zhu ◽  
Zhongyuan Huang ◽  
Mihai Chu ◽  
Shuankui Li ◽  
Yihua Zhang ◽  
...  
Keyword(s):  
Thermoelectric Performance ◽  
Anionic Framework

Structural Complexity and High Thermoelectric Performance of the Zintl Phase: Yb21Mn4Sb18

2019 ◽  
Vol 31 (19) ◽  
pp. 8076-8086 ◽  
Author(s):  
Allan He ◽  
Sabah K. Bux ◽  
Yufei Hu ◽  
David Uhl ◽  
Li Li ◽  
...  
Keyword(s):  
Structural Complexity ◽  
Thermoelectric Performance ◽  
Zintl Phase

Enhanced Thermoelectric Performance of Zintl Phase Ca9Zn4+xSb9 by Beneficial Disorder on the Selective Cationic Site

2019 ◽  
Vol 11 (41) ◽  
pp. 37741-37747 ◽  
Author(s):  
Chen Chen ◽  
Wenhua Xue ◽  
Xiaofang Li ◽  
Yucheng Lan ◽  
Zongwei Zhang ◽  
...  
Keyword(s):  
Thermoelectric Performance ◽  
Zintl Phase ◽  
Cationic Site

Manipulating the intrinsic vacancies for enhanced thermoelectric performance in Eu2ZnSb2 Zintl phase

Nano Energy ◽  
2020 ◽  
Vol 73 ◽  
pp. 104771 ◽  
Author(s):  
Chen Chen ◽  
Xiaofang Li ◽  
Wenhua Xue ◽  
Fengxian Bai ◽  
Yifang Huang ◽  
...  
Keyword(s):  
Thermoelectric Performance ◽  
Zintl Phase

Enhanced thermoelectric performance of p-type Mg3Sb2 by lithium doping and its tunability in an anionic framework

2018 ◽  
Vol 53 (23) ◽  
pp. 16001-16009 ◽  
Author(s):  
Chen Chen ◽  
Xiaofang Li ◽  
Shan Li ◽  
Xinyu Wang ◽  
Zongwei Zhang ◽  
...  
Keyword(s):  
Thermoelectric Performance ◽  
Lithium Doping ◽  
P Type ◽  
Anionic Framework

scholarly journals Intrinsic nanostructure induced ultralow thermal conductivity yields enhanced thermoelectric performance in Zintl phase Eu2ZnSb2

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Chen Chen ◽  
Zhenzhen Feng ◽  
Honghao Yao ◽  
Feng Cao ◽  
Bing-Hua Lei ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
First Principles ◽  
Lattice Thermal Conductivity ◽  
High Mobility ◽  
Partial Ordering ◽  
Thermoelectric Performance ◽  
Local Order ◽  
Conductivity Measurements ◽  
Zintl Phase ◽  
Site Disorder

AbstractThe Zintl thermoelectric phase Eu2ZnSb2 has a remarkable combination of high mobility and low thermal conductivity that leads to good thermoelectric performance. The key feature of this compound is a crystal structure that has a Zn-site with a 50% occupancy. Here we use comparison of experimental thermal conductivity measurements and first principles thermal conductivity calculations to characterize the thermal conductivity reduction. We find that partial ordering, characterized by local order, but Zn-site disorder on longer scales, leads to an intrinsic nanostructuring induced reduction in thermal conductivity, while retaining electron mobility. This provides a direction for identifying Zintl compounds with ultralow lattice thermal conductivity and good electrical conductivity.

scholarly journals Enhancing thermoelectric properties of a p-type Mg3Sb2- based Zintl phase compound by Pb substitution in the anionic framework

RSC Advances ◽  
2014 ◽  
Vol 4 (65) ◽  
pp. 34552-34560 ◽  
Author(s):  
A. Bhardwaj ◽  
D. K. Misra
Keyword(s):  
Thermal Conductivity ◽  
Bismuth Telluride ◽  
Power Factor ◽  
Anionic Site ◽  
Zintl Phase ◽  
Phase Compound ◽  
Industrial Materials ◽  
P Type ◽  
Pb Substitution ◽  
Anionic Framework

Pb substitution on anionic site of Mg3Sb2 structure enhances the power factor and simultaneously reduces the thermal conductivity which leads to a ZT ≈ 0.84 at 773 K for Mg3Sb1.8Pb0.2 alloy. The enhanced ZT of this system is comparable to bismuth telluride and selenide industrial materials which are toxic and expensive.

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