Fabrication and high-temperature thermoelectric properties of Ti-doped Sr0.9La0.1TiO3 ceramics

Mengjie Qin; Feng Gao; Min Wang; Chaochao Zhang; Qingqing Zhang; Li Wang

doi:10.1016/j.ceramint.2016.07.091

Fabrication and high-temperature thermoelectric properties of Ti-doped Sr_0.9La_0.1TiO₃ ceramics

Mengjie Qin, Feng Gao, Min Wang, Chaochao Zhang, Qingqing Zhang, Li Wang

School of Materials Sience and Engineering

Northwestern Polytechnical University Xian

Research output: Contribution to journal › Article › peer-review

25 Scopus citations

Abstract

Ti-doped Sr_0.9La_0.1TiO₃ ceramics with high density were successfully prepared in argon atmosphere by conventional solid state reaction. The influences of titanium doping content on the microstructure and thermoelectric properties were investigated. The results showed that titanium was oxidized during the calcination procedure. TiO₂ phase survived and coexisted with Sr_0.9La_0.1TiO₃ phase in the sintered ceramics. The Seebeck coefficients were increased from −163 to −259 μV/K as the temperature increased from 350 K to 1073 K. The thermal conductivity can be significantly reduced by doping Ti. Thermoelectric figure of merit (ZT) first decreased and then increased with increasing Ti doping content. Ceramics showed the best thermoelectric properties when Ti doping amount was 5 wt%, the maximum PF was 7.13 μW/K²/cm, and ZT value was 0.144 at 1073 K.

Original language	English
Pages (from-to)	16644-16649
Number of pages	6
Journal	Ceramics International
Volume	42
Issue number	15
DOIs	https://doi.org/10.1016/j.ceramint.2016.07.091
State	Published - 15 Nov 2016

Keywords

Microstructure
SrLaTiO
Thermoelectric properties
Titanium doping
ZT value

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10.1016/j.ceramint.2016.07.091

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title = "Fabrication and high-temperature thermoelectric properties of Ti-doped Sr0.9La0.1TiO3 ceramics",

abstract = "Ti-doped Sr0.9La0.1TiO3 ceramics with high density were successfully prepared in argon atmosphere by conventional solid state reaction. The influences of titanium doping content on the microstructure and thermoelectric properties were investigated. The results showed that titanium was oxidized during the calcination procedure. TiO2 phase survived and coexisted with Sr0.9La0.1TiO3 phase in the sintered ceramics. The Seebeck coefficients were increased from −163 to −259 μV/K as the temperature increased from 350 K to 1073 K. The thermal conductivity can be significantly reduced by doping Ti. Thermoelectric figure of merit (ZT) first decreased and then increased with increasing Ti doping content. Ceramics showed the best thermoelectric properties when Ti doping amount was 5 wt%, the maximum PF was 7.13 μW/K2/cm, and ZT value was 0.144 at 1073 K.",

keywords = "Microstructure, SrLaTiO, Thermoelectric properties, Titanium doping, ZT value",

author = "Mengjie Qin and Feng Gao and Min Wang and Chaochao Zhang and Qingqing Zhang and Li Wang",

note = "Publisher Copyright: {\textcopyright} 2016 Elsevier Ltd and Techna Group S.r.l.",

year = "2016",

month = nov,

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doi = "10.1016/j.ceramint.2016.07.091",

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T1 - Fabrication and high-temperature thermoelectric properties of Ti-doped Sr0.9La0.1TiO3 ceramics

AU - Qin, Mengjie

AU - Gao, Feng

AU - Wang, Min

AU - Zhang, Chaochao

AU - Zhang, Qingqing

AU - Wang, Li

PY - 2016/11/15

Y1 - 2016/11/15

N2 - Ti-doped Sr0.9La0.1TiO3 ceramics with high density were successfully prepared in argon atmosphere by conventional solid state reaction. The influences of titanium doping content on the microstructure and thermoelectric properties were investigated. The results showed that titanium was oxidized during the calcination procedure. TiO2 phase survived and coexisted with Sr0.9La0.1TiO3 phase in the sintered ceramics. The Seebeck coefficients were increased from −163 to −259 μV/K as the temperature increased from 350 K to 1073 K. The thermal conductivity can be significantly reduced by doping Ti. Thermoelectric figure of merit (ZT) first decreased and then increased with increasing Ti doping content. Ceramics showed the best thermoelectric properties when Ti doping amount was 5 wt%, the maximum PF was 7.13 μW/K2/cm, and ZT value was 0.144 at 1073 K.

AB - Ti-doped Sr0.9La0.1TiO3 ceramics with high density were successfully prepared in argon atmosphere by conventional solid state reaction. The influences of titanium doping content on the microstructure and thermoelectric properties were investigated. The results showed that titanium was oxidized during the calcination procedure. TiO2 phase survived and coexisted with Sr0.9La0.1TiO3 phase in the sintered ceramics. The Seebeck coefficients were increased from −163 to −259 μV/K as the temperature increased from 350 K to 1073 K. The thermal conductivity can be significantly reduced by doping Ti. Thermoelectric figure of merit (ZT) first decreased and then increased with increasing Ti doping content. Ceramics showed the best thermoelectric properties when Ti doping amount was 5 wt%, the maximum PF was 7.13 μW/K2/cm, and ZT value was 0.144 at 1073 K.

KW - Microstructure

KW - SrLaTiO

KW - Thermoelectric properties

KW - Titanium doping

KW - ZT value

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U2 - 10.1016/j.ceramint.2016.07.091

DO - 10.1016/j.ceramint.2016.07.091

M3 - 文章

AN - SCOPUS:84995598371

SN - 0272-8842

VL - 42

SP - 16644

EP - 16649

JO - Ceramics International

JF - Ceramics International

IS - 15

ER -

Fabrication and high-temperature thermoelectric properties of Ti-doped Sr_0.9La_0.1TiO₃ ceramics

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Keywords

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