1-2-2 Layered Zintl-Phase Thermoelectric Materials

2019 ◽  
pp. 159-175
Author(s):  
Jing Shuai ◽  
Shan Li ◽  
Chen Chen ◽  
Xiaofang Li ◽  
Jun Mao ◽  
...  
Keyword(s):  
Thermoelectric Materials ◽  
Zintl Phase

scholarly journals Zintl-phase Eu2ZnSb2: A promising thermoelectric material with ultralow thermal conductivity

2019 ◽  
Vol 116 (8) ◽  
pp. 2831-2836 ◽  
Author(s):  
Chen Chen ◽  
Wenhua Xue ◽  
Shan Li ◽  
Zongwei Zhang ◽  
Xiaofang Li ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Thermoelectric Material ◽  
Thermoelectric Materials ◽  
Lattice Thermal Conductivity ◽  
Domain Boundary ◽  
Zn Deficiency ◽  
Zintl Phase ◽  
Medium Temperature ◽  
Inversion Domain ◽  
Electron Crystal

Zintl compounds are considered to be potential thermoelectric materials due to their “phonon glass electron crystal” (PGEC) structure. A promising Zintl-phase thermoelectric material, 2-1-2–type Eu2ZnSb2 (P63/mmc), was prepared and investigated. The extremely low lattice thermal conductivity is attributed to the external Eu atomic layers inserted in the [Zn2Sb2]2- network in the structure of 1-2-2–type EuZn2Sb2(P3¯m1), as well as the abundant inversion domain boundary. By regulating the Zn deficiency, the electrical properties are significantly enhanced, and the maximum ZT value reaches ∼1.0 at 823 K for Eu2Zn0.98Sb2. Our discovery provides a class of Zintl thermoelectric materials applicable in the medium-temperature range.

Early Stage of the Single-Crystal Growth and Tipping Point of the Cationic Site-Preference in the Gd-doped Zintl Phase Thermoelectric Materials

CrystEngComm ◽  
2021 ◽  
Author(s):  
Hayeon Sa ◽  
Junsu Lee ◽  
Yeongjin Hong ◽  
Mi-Kyung Han ◽  
Hongil Jo ◽  
...  
Keyword(s):  
Crystal Growth ◽  
Single Crystal ◽  
Solid Solutions ◽  
Thermoelectric Materials ◽  
Early Stage ◽  
Single Crystal Growth ◽  
Site Preference ◽  
Zintl Phase ◽  
Arc Melting ◽  
Cationic Site

Three novel Zintl phase solid-solutions in the Ca11-xGdxSb10-y (0.36(2) ≤ x ≤ 0.58(4), 0.26(1) ≤ y ≤ 0.37(1)) system have been successfully synthesized by arc-melting, and their crystal structures were...

Significantly enhanced thermoelectric figure of merit of p-type Mg3Sb2-based Zintl phase compounds via nanostructuring and employing high energy mechanical milling coupled with spark plasma sintering

2015 ◽  
Vol 3 (20) ◽  
pp. 10777-10786 ◽  
Author(s):  
A. Bhardwaj ◽  
N. S. Chauhan ◽  
D. K. Misra
Keyword(s):  
Thermoelectric Materials ◽  
Mechanical Milling ◽  
Figure Of Merit ◽  
High Energy ◽  
Thermoelectric Figure Of Merit ◽  
Zintl Phase ◽  
Thermoelectric Figure ◽  
Plasma Sintering ◽  
Spark Plasma ◽  
P Type

Several nanostructuring methods have been demonstrated to produce a variety of nanostructured materials, and these methods are well recognized as effective paradigms for improving the performance of thermoelectric materials.

p-Type to n-Type Conversion through the “Bypass” Phase Transition in the Zintl-Phase Thermoelectric Materials

2021 ◽  
Author(s):  
Seongbeom Yeon ◽  
Seungeun Shin ◽  
Hongil Jo ◽  
Nguyen Le Thi ◽  
Dohyun Moon ◽  
...  
Keyword(s):  
Phase Transition ◽  
Thermoelectric Materials ◽  
Type Conversion ◽  
Zintl Phase ◽  
P Type

Energy Challenges and Optimization of Figure of Merit for Thermoelectric Materials

2014 ◽  
Vol 03 (10) ◽  
pp. 16475-16479
Author(s):  
ASHAQ HUSSAIN SOFI ◽  
BAASIT ABUBAKR ◽  
ANIL MAINI ◽  
MOHAMMAD ASHRAF SHAH
Keyword(s):  
Thermoelectric Materials ◽  
Figure Of Merit
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