scholarly journals Effects of Heavy Element Substitution on Electronic Structure and Lattice Thermal Conductivity of Fe2VAl Thermoelectric Material

2012 ◽  
Vol 76 (3) ◽  
pp. 216-221 ◽  
Author(s):  
Yuichi Terazawa ◽  
Masashi Mikami ◽  
Takashi Itoh ◽  
Tsunehiro Takeuchi
Keyword(s):  
Thermal Conductivity ◽  
Electronic Structure ◽  
Thermoelectric Material ◽  
Heavy Element ◽  
Lattice Thermal Conductivity ◽  
Element Substitution

Metal phosphide CuP2 as a promising thermoelectric material: an insight from first-principles study

2021 ◽  
Author(s):  
Un-Gi Jong ◽  
Chol-Hyok Ri ◽  
Chol-Jin Pak ◽  
Chol-Hyok Kim ◽  
Stefaan Cottenier ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Thermoelectric Material ◽  
Thermoelectric Materials ◽  
First Principles ◽  
Lattice Thermal Conductivity ◽  
Metal Phosphide ◽  
First Principles Study ◽  
Metal Phosphides ◽  
Large Lattice

In the search for better thermoelectric materials, metal phosphides have not been considered to be viable candidates so far, due to their large lattice thermal conductivity. Here we study thermoelectric...

Aguilarite Ag4SSe Thermoelectric Material: Natural Mineral with Low Lattice Thermal Conductivity

2019 ◽  
Vol 11 (13) ◽  
pp. 12632-12638 ◽  
Author(s):  
Tuo Wang ◽  
Kunpeng Zhao ◽  
Pengfei Qiu ◽  
Qingfeng Song ◽  
Lidong Chen ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Thermoelectric Material ◽  
Lattice Thermal Conductivity ◽  
Natural Mineral

scholarly journals SnTe–AgBiTe2 as an efficient thermoelectric material with low thermal conductivity

2014 ◽  
Vol 2 (48) ◽  
pp. 20849-20854 ◽  
Author(s):  
Gangjian Tan ◽  
Fengyuan Shi ◽  
Hui Sun ◽  
Li-Dong Zhao ◽  
Ctirad Uher ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Solid Solution ◽  
Seebeck Coefficient ◽  
Thermoelectric Material ◽  
Lattice Thermal Conductivity ◽  
Alloying Effect ◽  
Low Thermal Conductivity ◽  
Interface Scattering

SnTe–AgBiTe2 is not only a solid solution but a nanocomposite. The alloying effect coupled with intense interface scattering leads to considerably decreased lattice thermal conductivity. Bi is much more powerful in neutralizing holes than Sb, giving rise to a much higher Seebeck coefficient. A high ZT was then obtained.

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.

Overview of Various Strategies and Promising New Bulk Materials for Potential Thermoelectric Applications

2001 ◽  
Vol 691 ◽  
Author(s):  
Terry M. Tritt
Keyword(s):  
Thermal Conductivity ◽  
Thermoelectric Material ◽  
Lattice Thermal Conductivity ◽  
Heusler Alloys ◽  
Material Research ◽  
Research Groups ◽  
Ceramic Oxides ◽  
Large Power ◽  
Minimum Requirements ◽  
Low Dimensional

ABSTRACTRecently, there has been a renewed interest in thermoelectric material research. There are a number of different systems of potential thermoelectric (TE) materials that are under investigation by various research groups. Some of these research efforts focus on minimizing lattice thermal conductivity while other efforts focus on materials that exhibit large power factors. An overview of some of the requirements and strategies for the investigation and optimization of a new system of materials for potential thermoelectric applications will be discussed. Some of the newer concepts such as low-dimensional systems and Slack's phononglass, electron-crystal concept will be discussed. Current strategies for minimizing lattice thermal conductivity and also minimum requirements for thermopower will be presented. The emphasis of this paper will be to identify some of the more recent promising bulk materials and discuss the challenges and issues related to each. This paper is targeted more at “newcomers” to the field and does not discuss some of the very interesting results that are being reported in the thin film and superlattice materials. Some of the bulk materials which will be discussed include complex chalcogenides (e.g.CsBi4Te6 and pentatellurides such as the Zr1−XHfXTe5 system), half-Heusler alloys (e.g. TiNiSn1−XSbX), ceramic oxides (NaCo4O2), skutterudites (e.g. YbXCo4−XSb12 or EuXCo4−XSb12) and clathrates (e.g. Sr8Ga16Ge30). Each of these systems is distinctly different yet each exhibits some prospect as a potential thermoelectric material. Results will be presented and discussed on each system of materials.

Thermoelectric Material SnPb2Bi2S6: The 4,4L Member of Lillianite Homologous Series with Low Lattice Thermal Conductivity

2018 ◽  
Vol 58 (2) ◽  
pp. 1339-1348
Author(s):  
Jingpeng Li ◽  
Yiming Zhou ◽  
Shiqiang Hao ◽  
Tianyan Zhang ◽  
Chris Wolverton ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Thermoelectric Material ◽  
Homologous Series ◽  
Lattice Thermal Conductivity

Anharmonic phonon frequency and ultralow lattice thermal conductivity in β-Cu2Se liquid-like thermoelectrics

2020 ◽  
Vol 22 (48) ◽  
pp. 28086-28092
Author(s):  
Wenjie Zhang ◽  
Chong Zheng ◽  
Yanbing Dong ◽  
Jia-Yue Yang ◽  
Linhua Liu
Keyword(s):  
Thermal Conductivity ◽  
Thermoelectric Material ◽  
Lattice Thermal Conductivity ◽  
Phonon Frequency ◽  
Electron Crystal

The prototype phonon-liquid electron-crystal β-Cu2Se has been ranked among the best thermoelectric material with its ultralow lattice thermal conductivity (κL).

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