High-Temperature Thermoelectric Power of The Metal Oxides: La2− x Sr x CuO4 and Bi1− x Sr x MnO3

Increasing electrical conductivity in oxides, which are inherently insulators, can be a potential route in developing oxide-based thermoelectric power generators with higher energy conversion efficiency.

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Selective gas detection with high-temperature operated metal oxides using catalytic filters

Sensors and Actuators B Chemical ◽

10.1016/s0925-4005(00)00513-x ◽

2000 ◽

Vol 69 (1-2) ◽

pp. 205-210 ◽

Cited By ~ 95

Author(s):

Maximilian Fleischer ◽

Susanne Kornely ◽

Thomas Weh ◽

Joachim Frank ◽

H Meixner

Keyword(s):

High Temperature ◽

Metal Oxides ◽

Gas Detection

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Rapid Synthesis of Bi Substituted Ca3Co4O9 by a Polyacrylamide Gel Method and its High-Temperature Thermoelectric Power Factor

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.434-435.393 ◽

2010 ◽

Vol 434-435 ◽

pp. 393-396 ◽

Cited By ~ 9

Author(s):

Ying Song ◽

Qiu Sun ◽

Li Rong Zhao ◽

Fu Ping Wang

Keyword(s):

High Temperature ◽

Thermoelectric Power ◽

Power Factor ◽

Solid State Reaction Method ◽

Polyacrylamide Gel ◽

Measured Temperature ◽

Thermoelectric Power Factor ◽

Gel Method ◽

Plasma Sintering ◽

Polyacrylamide Gel Method

A series of polycrystalline (Ca1-xBix)3Co4O9 ( x = 0.0 ~ 0.075 ) powders were synthesized rapidly by a polyacrylamide gel method. The dense ceramics were fabricated using the spark plasma sintering ( SPS ) technique. Effects of Bi substitution on high temperature thermoelectric properties of Ca3Co4O9 were evaluated. Both the electrical conductivity and Seebeck coefficient increased with increasing Bi content up to x = 0.05, thus leading to an enhanced thermoelectric power factor. The Bi substituted sample with x = 0.05 obtained in this study has the highest thermoelectric power factor in the measured temperature range. It reaches 4.810-4 Wm-1K-2 at 700 °C, which is 26 % higher than that of Ca3Co4O9 without Bi substitution, and is by up to 15 % larger as compared to the Bi substituted sample synthesized by the solid state reaction method and the SPS technique due to the high chemical homogeneous powder prepared by the polyacrylamide gel method.

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High-Temperature PbTe Thin Films for Use in Cascade Thermoelectric Power Generation

MRS Proceedings ◽

10.1557/proc-793-s11.6 ◽

2003 ◽

Vol 793 ◽

Author(s):

J.B. Posthill ◽

J.C. Caylor ◽

P.D. Crocco ◽

T.S. Colpitts ◽

R. Venkatasubramanian

Keyword(s):

Thin Films ◽

Thermal Conductivity ◽

Power Generation ◽

High Temperature ◽

Ambient Temperature ◽

Thermoelectric Power ◽

Thermal Evaporation ◽

Potential Candidate ◽

Substrate Orientation ◽

Subtle Effect

ABSTRACTPbTe-based thin films were deposited by thermal evaporation at temperatures ranging from ambient temperature to 430°C on different vicinal GaAs (100) substrates and BaF2 (111). This materials system is being evaluated as a potential candidate thermoelectric material for a mid-temperature stage in a cascade power generation module. Pure PbTe, PbSe, and multilayer PbTe/PbSe films were investigated. All films deposited on different vicinal GaAs (100) substrates were found to be polycrystalline when deposited at 250°C or lower. A subtle effect of substrate orientation and multilayer periodicity appears to contribute to the more randomly oriented polycrystallinity, which also lowers the thermal conductivity. These results are compared with PbTe epitaxial results on BaF2 (111).

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Transcription methodology for rationally designed morphological complex metal oxides: A versatile strategy for improved electrocatalysis

Sustainable Energy & Fuels ◽

10.1039/d1se01516h ◽

2021 ◽

Author(s):

Sourav Bhowmick ◽

Manoj Kumar Mohanta ◽

Mohammad Qureshi

Keyword(s):

High Temperature ◽

Metal Oxides ◽

High Activity ◽

High Temperatures ◽

Complex Metal ◽

Complex Metal Oxides

Complex metal oxides such as 3D perovskites, known for their high activity and stability, are traditionally synthesized at high temperatures leaving little scope for morphological tuning using structure-directing and high-temperature...

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