Suppressing thermal conductivity of nano-grained thermoelectric material using acoustically hard nanoparticles

2021 ◽  
Vol 130 (23) ◽  
pp. 235106
Author(s):  
Jianlin Zheng ◽  
Yasuhiro Kodera ◽  
Xia Xu ◽  
Sunmi Shin ◽  
Ka Man Chung ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Thermoelectric Material

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...

scholarly journals Impact of the iron substitution on the thermoelectric properties of Co 1− x Fe x S 2 ( x  ≤ 0.30)

2019 ◽  
Vol 377 (2152) ◽  
pp. 20180337 ◽  
Author(s):  
Ulises Acevedo Salas ◽  
Ismail Fourati ◽  
Jean Juraszek ◽  
Fabienne Richomme ◽  
Denis Pelloquin ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Thermal Properties ◽  
Thermoelectric Properties ◽  
Thermoelectric Material ◽  
Power Factor ◽  
Room Temperature ◽  
Low Carbon ◽  
Energy Materials ◽  
Work Samples ◽  
Lattice Part

The strong interplay between magnetism and transport can tune the thermoelectric properties in chalcogenides and oxides. In the case of ferromagnetic CoS 2 pyrite, it was previously shown that the power factor is large at room temperature, reaching 1 mW m −1  K −2 and abruptly increases for temperatures below the Curie transition ( T C ), an increase potentially due to a magnonic effect on the Seebeck ( S ) coefficient. The too large thermal conductivity approximately equal to 10.5 W m −1  K −1 at room temperature prevents this pyrite from being a good thermoelectric material. In this work, samples belonging to the Co 1− x Fe x S 2 pyrite family ( x  = 0, 0.15 and 0.30) have thus been investigated in order to modify the thermal properties by the introduction of disorder on the Co site. We show here that the thermal conductivity can indeed be reduced by such a substitution, but that this substitution predominantly induces a reduction of the electronic part of the thermal conductivity and not of the lattice part. Interestingly, the magnonic contribution to S below T C disappears as x increases, while at high T , S tends to a very similar value (close to −42 µV K −1 ) for all the samples investigated. This article is part of a discussion meeting issue ‘Energy materials for a low carbon future’.

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

Ag8SiTe6: A New Thermoelectric Material with Low Thermal Conductivity

2009 ◽  
Vol 48 (1) ◽  
pp. 011603 ◽  
Author(s):  
Anek Charoenphakdee ◽  
Ken Kurosaki ◽  
Hiroaki Muta ◽  
Masayoshi Uno ◽  
Shinsuke Yamanaka
Keyword(s):  
Thermal Conductivity ◽  
Thermoelectric Material ◽  
Low Thermal Conductivity

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.

Sulfide bornite thermoelectric material: a natural mineral with ultralow thermal conductivity

2014 ◽  
Vol 7 (12) ◽  
pp. 4000-4006 ◽  
Author(s):  
Pengfei Qiu ◽  
Tiansong Zhang ◽  
Yuting Qiu ◽  
Xun Shi ◽  
Lidong Chen
Keyword(s):  
Thermal Conductivity ◽  
Thermoelectric Material ◽  
Thermoelectric Performance ◽  
Electric Currents ◽  
Natural Mineral ◽  
Enhanced Stability

The natural mineral bornite that has ultralow thermal conductivity exhibits excellent thermoelectric performance and enhanced stability under large electric currents.

scholarly journals Structural Phase Transition and Related Thermoelectric Properties in Sn Doped AgBiSe2

Crystals ◽  
2021 ◽  
Vol 11 (9) ◽  
pp. 1016
Author(s):  
Xiao-Cun Liu ◽  
Ming-Yan Pan
Keyword(s):  
Crystal Structure ◽  
Phase Transition ◽  
Thermal Conductivity ◽  
Thermoelectric Properties ◽  
Thermoelectric Material ◽  
Structural Phase Transition ◽  
Structural Phase ◽  
X Ray Diffraction ◽  
Scanning Calorimetry ◽  
Complex Structural

AgBiSe2, which exhibits complex structural phase transition behavior, has recently been considered as a potential thermoelectric material due to its intrinsically low thermal conductivity. In this work, we investigate the crystal structure of Sn-doped AgBiSe2 through powder X-ray diffraction and differential scanning calorimetry measurements. A stable cubic Ag1−x/2Bi1−x/2SnxSe2 phase can be obtained at room temperature when the value of x is larger than 0.2. In addition, the thermoelectric properties of Ag1−x/2Bi1−x/2SnxSe2 (x = 0.2, 0.25, 0.3, 0.35) are investigated, revealing that Ag1−x/2Bi1−x/2SnxSe2 compounds are intrinsic semiconductors with a low lattice thermal conductivity. This work provides new insights into the crystal structure adjustment of AgBiSe2 and shows that Ag1−x/2Bi1−x/2SnxSe2 is a potentially lead-free thermoelectric material candidate.

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.

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