Emphanisis in Cubic (SnSe)0.5(AgSbSe2)0.5: Dynamical Off-Centering of Anion Leads to Low Thermal Conductivity and High Thermoelectric Performance

2021 ◽  
Author(s):  
Moinak Dutta ◽  
Koushik Pal ◽  
Martin Etter ◽  
Umesh V. Waghmare ◽  
Kanishka Biswas
Keyword(s):  
Thermal Conductivity ◽  
Thermoelectric Performance ◽  
Low Thermal Conductivity

scholarly journals High thermoelectric performance enabled by convergence of nested conduction bands in Pb7Bi4Se13 with low thermal conductivity

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Lei Hu ◽  
Yue-Wen Fang ◽  
Feiyu Qin ◽  
Xun Cao ◽  
Xiaoxu Zhao ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Waste Heat ◽  
Low Frequency ◽  
Thermoelectric Performance ◽  
Environmental Crisis ◽  
Quality Factors ◽  
Thermoelectric Efficiency ◽  
Low Thermal Conductivity ◽  
Conduction Bands ◽  
Thermoelectric Energy

AbstractThermoelectrics enable waste heat recovery, holding promises in relieving energy and environmental crisis. Lillianite materials have been long-term ignored due to low thermoelectric efficiency. Herein we report the discovery of superior thermoelectric performance in Pb7Bi4Se13 based lillianites, with a peak figure of merit, zT of 1.35 at 800 K and a high average zT of 0.92 (450–800 K). A unique quality factor is established to predict and evaluate thermoelectric performances. It considers both band nonparabolicity and band gaps, commonly negligible in conventional quality factors. Such appealing performance is attributed to the convergence of effectively nested conduction bands, providing a high number of valley degeneracy, and a low thermal conductivity, stemming from large lattice anharmonicity, low-frequency localized Einstein modes and the coexistence of high-density moiré fringes and nanoscale defects. This work rekindles the vision that Pb7Bi4Se13 based lillianites are promising candidates for highly efficient thermoelectric energy conversion.

Low Thermal Conductivity and Enhanced Thermoelectric Performance in In and Lu Double-Filled CoSb3 Skutterudites

2011 ◽  
Vol 40 (5) ◽  
pp. 611-614 ◽  
Author(s):  
G. D. Tang ◽  
Z. H. Wang ◽  
X. N. Xu ◽  
Y. He ◽  
L. Qiu ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Thermoelectric Performance ◽  
Low Thermal Conductivity

Ultra-low thermal conductivity and high thermoelectric performance realized in a Cu3SbSe4 based system

2021 ◽  
Vol 5 (1) ◽  
pp. 324-332
Author(s):  
J. M. Li ◽  
H. W. Ming ◽  
B. L. Zhang ◽  
C. J. Song ◽  
L. Wang ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Thermoelectric Properties ◽  
Thermoelectric Performance ◽  
Low Thermal Conductivity ◽  
Sn Doping ◽  
Temperature Range ◽  
System P

Cu3SbSe4-Based materials were fabricated through Sn-doping and AgSb0.98Ge0.02Se2 incorporation and their thermoelectric properties were investigated in the temperature range from 300 K to 675 K.

Extremely Low Thermal Conductivity and Enhanced Thermoelectric Performance of Porous Gallium-Doped In2O3

2021 ◽  
Author(s):  
Huijuan Wu ◽  
Lili Chen ◽  
Suiting Ning ◽  
Xiaodie Zhao ◽  
Shuping Deng ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Thermoelectric Performance ◽  
Low Thermal Conductivity

Low Thermal Conductivity and High Thermoelectric Performance in In4Se3−x with Phase-Separated Indium Inclusions

2016 ◽  
Vol 46 (3) ◽  
pp. 1444-1450 ◽  
Author(s):  
Pankaj Kumar Rawat ◽  
Hwanjoo Park ◽  
Junphil Hwang ◽  
Woochul Kim
Keyword(s):  
Thermal Conductivity ◽  
Thermoelectric Performance ◽  
Low Thermal Conductivity

scholarly journals The microscopic origin of low thermal conductivity for enhanced thermoelectric performance of Yb doped MgAgSb

2017 ◽  
Vol 128 ◽  
pp. 227-234 ◽  
Author(s):  
Zihang Liu ◽  
Yongsheng Zhang ◽  
Jun Mao ◽  
Weihong Gao ◽  
Yumei Wang ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Thermoelectric Performance ◽  
Low Thermal Conductivity ◽  
Microscopic Origin

Enhanced thermoelectric performance of compacted Bi0.5Sb1.5Te3 nanoplatelets with low thermal conductivity

2011 ◽  
Vol 26 (15) ◽  
pp. 1755-1761 ◽  
Author(s):  
Chia-Jyi Liu ◽  
Gao-Jhih Liu ◽  
Yen-Liang Liu ◽  
Liang-Ru Chen ◽  
Alan B. Kaiser
Keyword(s):  
Thermal Conductivity ◽  
Thermoelectric Performance ◽  
Low Thermal Conductivity ◽  
Image Position

Abstract

scholarly journals High thermoelectric performance and low thermal conductivity of densified LaOBiSSe

2015 ◽  
Vol 8 (11) ◽  
pp. 111801 ◽  
Author(s):  
Atsuhiro Nishida ◽  
Osuke Miura ◽  
Chul-Ho Lee ◽  
Yoshikazu Mizuguchi
Keyword(s):  
Thermal Conductivity ◽  
Thermoelectric Performance ◽  
Low Thermal Conductivity
Sign in / Sign up

Export Citation Format

Share Document