Redox engineering of strontium titanate-based thermoelectrics

2020 ◽  
Vol 8 (15) ◽  
pp. 7317-7330 ◽  
Author(s):  
Andrei V. Kovalevsky ◽  
Kiryl V. Zakharchuk ◽  
Myriam H. Aguirre ◽  
Wenjie Xie ◽  
Sonia G. Patrício ◽  
...  
Keyword(s):  
Strontium Titanate ◽  
Thermoelectric Properties

This work explores how, by redox-sensitive substitutions, the thermoelectric properties of oxides can be tuned and enhanced.

scholarly journals Thermoelectric Properties of Combustion-Synthesized Lanthanum-Doped Strontium Titanate

2007 ◽  
Vol 48 (5) ◽  
pp. 1079-1083 ◽  
Author(s):  
Lihua Zhang ◽  
Tsuyoshi Tosho ◽  
Noriyuki Okinaka ◽  
Tomohiro Akiyama
Keyword(s):  
Strontium Titanate ◽  
Thermoelectric Properties

Effect of TiO2 additive on thermoelectric properties of SrTiO3

2019 ◽  
Vol 13 (02) ◽  
pp. 2051001
Author(s):  
Wei-Ying Yang ◽  
Ke-Xian Wang ◽  
Zheng Cao ◽  
Hao-Yang Yu ◽  
Xiao-Bo Ma ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Electrical Conductivity ◽  
High Temperature ◽  
Seebeck Coefficient ◽  
Strontium Titanate ◽  
Thermoelectric Properties ◽  
Waste Heat ◽  
Molar Ratio ◽  
Composite Powders ◽  
The Impact

Strontium titanate ([Formula: see text] has the advantages of being non-toxic, environmentally friendly and high-temperature stable, and has potential application in waste heat power generation at medium and high temperature. To explore the impact of TiO2 on the thermoelectric properties of SrTiO3, we synthesized TiO2/La10Nbb10-STO composite powders by hydrothermal method using precursor solution of 10[Formula: see text]mol.% La and 10[Formula: see text]mol.% Nb co-doped STO (La10Nb10-STO) containing TiO2 nanopowders with different molar ratio. After cold pressing and sintering, composite bulk materials were obtained, and their microstructure and thermoelectric transport properties were analyzed. With the increasing TiO2, although the thermal conductivity of TiO2/La10Nb10-STO composite decreased and the Seebeck coefficient increased, the minimum thermal conductivity and the maximum Seebeck coefficient were 2.54[Formula: see text][Formula: see text][Formula: see text] and 215[Formula: see text][Formula: see text]V[Formula: see text][Formula: see text], respectively, at 1000[Formula: see text]K, but the power factor decreased at high temperature due to the apparent decrease of electrical conductivity, resulting in the ZT values being lower than that of La0Nb10-STO without TiO2 addition at high temperature. Significantly, the addition of TiO2 can improve the thermoelectric performance of strontium titanate at low temperature. This approach is expected to improve the ZT of SrTiO3-based thermoelectric material through additional controlling of electrical conductivity.

Doping site dependent thermoelectric properties of epitaxial strontium titanate thin films

2014 ◽  
Vol 2 (45) ◽  
pp. 9712-9719 ◽  
Author(s):  
A. I. Abutaha ◽  
S. R. Sarath Kumar ◽  
Arash Mehdizadeh Dehkordi ◽  
Terry M. Tritt ◽  
H. N. Alshareef
Keyword(s):  
Thin Films ◽  
Strontium Titanate ◽  
Thermoelectric Properties

Thermoelectric Properties of Strontium Titanate Superlattices Incorporating Niobium Oxide Nanolayers

2014 ◽  
Vol 26 (8) ◽  
pp. 2726-2732 ◽  
Author(s):  
S. R. Sarath Kumar ◽  
M. N. Hedhili ◽  
Dongkyu Cha ◽  
Terry M. Tritt ◽  
H. N. Alshareef
Keyword(s):  
Strontium Titanate ◽  
Thermoelectric Properties ◽  
Niobium Oxide

Designing strontium titanate-based thermoelectrics: insight into defect chemistry mechanisms

2017 ◽  
Vol 5 (8) ◽  
pp. 3909-3922 ◽  
Author(s):  
Andrei V. Kovalevsky ◽  
Myriam H. Aguirre ◽  
Sascha Populoh ◽  
Sonia G. Patrício ◽  
Nuno M. Ferreira ◽  
...  
Keyword(s):  
Strontium Titanate ◽  
Thermoelectric Properties ◽  
Thermal Transport ◽  
Defect Chemistry ◽  
Insight Into

The work establishes a closer link between the defect chemistry and thermoelectric properties of strontium titanate-based materials, by uncovering particular roles of various defects in electronic and thermal transport.

Effects of YSZ Additions on Thermoelectric Properties of Nb-Doped Strontium Titanate

2010 ◽  
Vol 39 (9) ◽  
pp. 1777-1781 ◽  
Author(s):  
Ning Wang ◽  
Huawei Li ◽  
Yaoshuai Ba ◽  
Yifeng Wang ◽  
Chunlei Wan ◽  
...  
Keyword(s):  
Strontium Titanate ◽  
Thermoelectric Properties
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