Zr vacancy interfaces: an effective strategy for collaborative optimization of ZrNiSn-based thermoelectric performance

2019 ◽  
Vol 7 (45) ◽  
pp. 26053-26061 ◽  
Author(s):  
Yihua Zhang ◽  
Shuankui Li ◽  
Fusheng Liu ◽  
Chaohua Zhang ◽  
Lipeng Hu ◽  
...  
Keyword(s):  
Grain Boundaries ◽  
Thermoelectric Materials ◽  
Phonon Transport ◽  
Collaborative Optimization ◽  
Thermoelectric Performance ◽  
Effective Strategy

Grain boundaries play a key role in carrier/phonon transport in thermoelectric materials.

Toward high thermoelectric performance p-type FeSb2.2Te0.8via in situ formation of InSb nanoinclusions

2015 ◽  
Vol 3 (32) ◽  
pp. 8372-8380 ◽  
Author(s):  
Gangjian Tan ◽  
Hang Chi ◽  
Wei Liu ◽  
Yun Zheng ◽  
Xinfeng Tang ◽  
...  
Keyword(s):  
Grain Boundaries ◽  
Thermoelectric Materials ◽  
High Performance ◽  
Thermoelectric Performance ◽  
Electron Channel ◽  
Mobility Degradation ◽  
In Situ Formation ◽  
P Type

The InSb nanoinclusions formed in situ at the grain boundaries of FeSb2.2Te0.8 mitigates the mobility degradation while the added grain boundaries effectively scatter heat-carrying phonons. This novel “electron-channel phonon-barrier” nanocompositing approach opens a new route to design high performance thermoelectric materials.

Tuning SnSe/SnS hetero-interfaces to enhance thermoelectric performance

2018 ◽  
Vol 11 (04) ◽  
pp. 1850069 ◽  
Author(s):  
Xuerui Liu ◽  
Shuankui Li ◽  
Tinyang Liu ◽  
Weiming Zhu ◽  
Rui Wang ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Thermoelectric Materials ◽  
High Performance ◽  
Multiple Scales ◽  
Phonon Transport ◽  
Thermoelectric Performance ◽  
Energy Filtering ◽  
Promising Strategy ◽  
Filtering Effect ◽  
Heterogeneous Nanostructure

With the development of nanotechnology, thermoelectric materials with complex heterogeneous nanostructure offer a promising approach to improve the thermoelectric performance. In this work, SnSe/SnS hetero-nanosheet was tuned by the epitaxial growth of SnSe on the few layers of SnS nanosheets. The heterojunction interface can optimize the carrier/phonon transport behavior by energy filtering effect and scattering the phonon in multiple scales. Compared with pristine SnSe, the power factor of SnSe/SnS hetero-nanosheet increases from 2.2[Formula: see text][Formula: see text]V/cmK2 to 3.21[Formula: see text][Formula: see text]V/cmK2 at 773[Formula: see text]K, whereas the thermal conductivity decreases significantly from 0.65[Formula: see text]W[Formula: see text][Formula: see text][Formula: see text]m[Formula: see text] to 0.48[Formula: see text]W[Formula: see text][Formula: see text][Formula: see text]m[Formula: see text] at 773[Formula: see text]K. The maximum ZT of 0.5 is obtained at 773[Formula: see text]K in the SnSe/SnS hetero-nanosheets, which is 89% higher than pristine SnSe. This approach is proved to be a promising strategy to design high performance thermoelectric materials.

Intrinsically Ultralow Thermal Conductive Inorganic Solids for High Thermoelectric Performance

2021 ◽  
Author(s):  
Moinak Dutta ◽  
Debattam Sarkar ◽  
Kanishka Biswas
Keyword(s):  
Thermal Conductivity ◽  
Solid State ◽  
Thermoelectric Materials ◽  
Electrical Transport ◽  
Phonon Transport ◽  
Heat Energy ◽  
Thermoelectric Performance ◽  
Low Thermal Conductivity ◽  
Inorganic Solids

Thermoelectric materials which can convert heat energy to electricity relies on crystalline inorganic solid state compounds exhibiting low phonon transport (i.e. low thermal conductivity) without much inhibiting the electrical transport....

Hierarchical structures lead to high thermoelectric performance in Cum+nPb100SbmTe100Se2m (CLAST)

2021 ◽  
Author(s):  
Siqi Wang ◽  
Yu Xiao ◽  
Yongjin Chen ◽  
Shang Peng ◽  
Dongyang Wang ◽  
...  
Keyword(s):  
Hierarchical Structures ◽  
Phonon Transport ◽  
Thermoelectric Performance

Hierarchical microstructures lead to high thermoelectric performance in Cum+nPb100SbmTe100Se2m (CLAST) through synergistically optimizing carrier and phonon transport.

Enhancement of thermoelectric performance in non-toxic CuInTe2/SnTe coated grain nanocomposite

2021 ◽  
Author(s):  
Junphil Hwang ◽  
Minju Lee ◽  
Byung-Kyu Yu ◽  
Mi-Kyung Han ◽  
Woochul Kim ◽  
...  
Keyword(s):  
Grain Boundaries ◽  
Coating Layer ◽  
Thermoelectric Performance

Thermoelectric coated grain nanocomposites CuInTe2/SnTe with eco-friendly elements was synthesized. The nanocomposite contains a coating layer of CuInTe2 and SnO2 at the grain boundaries of the SnTe matrix. The coating...

scholarly journals Metal phosphides as potential thermoelectric materials

2017 ◽  
Vol 5 (47) ◽  
pp. 12441-12456 ◽  
Author(s):  
Jan-Hendrik Pöhls ◽  
Alireza Faghaninia ◽  
Guido Petretto ◽  
Umut Aydemir ◽  
Francesco Ricci ◽  
...  
Keyword(s):  
Thermoelectric Materials ◽  
Thermoelectric Performance ◽  
Band Structures ◽  
Electronic Band ◽  
Metal Phosphides ◽  
Electronic Band Structures ◽  
Thermal Conductivities

Metal phosphides are predicted to have high thermoelectric performance due to enhanced electronic band structures and low thermal conductivities.

A High Thermoelectric Performance ZT in p-Type LaSe2 Crystal

2021 ◽  
Vol 871 ◽  
pp. 203-207
Author(s):  
Jian Liu
Keyword(s):  
Thermal Conductivity ◽  
Power Factor ◽  
High Power ◽  
Density Functional ◽  
Lattice Thermal Conductivity ◽  
Phonon Transport ◽  
Thermoelectric Performance ◽  
Boltzmann Transport ◽  
High Power Factor ◽  
P Type

In this work, we use first principles DFT calculations, anharmonic phonon scatter theory and Boltzmann transport method, to predict a comprehensive study on the thermoelectric properties as electronic and phonon transport of layered LaSe2 crystal. The flat-and-dispersive type band structure of LaSe2 crystal offers a high power factor. In the other hand, low lattice thermal conductivity is revealed in LaSe2 semiconductor, combined with its high power factor, the LaSe2 crystal is considered a promising thermoelectric material. It is demonstrated that p-type LaSe2 could be optimized to exhibit outstanding thermoelectric performance with a maximum ZT value of 1.41 at 1100K. Explored by density functional theory calculations, the high ZT value is due to its high Seebeck coefficient S, high electrical conductivity, and low lattice thermal conductivity .

Designing high-performance n-type Mg3Sb2-based thermoelectric materials through forming solid solutions and biaxial strain

2018 ◽  
Vol 6 (41) ◽  
pp. 20454-20462 ◽  
Author(s):  
Juan Li ◽  
Shuai Zhang ◽  
Boyi Wang ◽  
Shichao Liu ◽  
Luo Yue ◽  
...  
Keyword(s):  
Solid Solutions ◽  
Thermoelectric Materials ◽  
High Performance ◽  
Thermoelectric Performance ◽  
Biaxial Strain

Thermoelectric performance can be largely enhanced by forming solid solutions and biaxial strain.

Nanostructure controlled construction of high-performance thermoelectric materials of polymers and their composites

2018 ◽  
Vol 6 (45) ◽  
pp. 22381-22390 ◽  
Author(s):  
Yufeng Xue ◽  
Chunmei Gao ◽  
Lirong Liang ◽  
Xin Wang ◽  
Guangming Chen
Keyword(s):  
Thermoelectric Materials ◽  
High Performance ◽  
Thermoelectric Performance ◽  
Recent Advances

This review discusses recent advances in controlled fabrication of nanostructures and the enhanced thermoelectric performance of polymers and their composites.

Sign in / Sign up

Export Citation Format

Share Document