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Journal article

Microstructure and thermoelectric properties of screen-printed thick-films of misfit-layered cobalt oxides with Ag addition

By Van Nong, Ngo1,2,3; Samson, Alfred Junio3; Pryds, Nini1,2,3; Linderoth, Søren2,3,4

From

Thermo Ceramics, Fuel Cells and Solid State Chemistry Division, Risø National Laboratory for Sustainable Energy, Technical University of Denmark1

Fuel Cells and Solid State Chemistry Division, Risø National Laboratory for Sustainable Energy, Technical University of Denmark2

Risø National Laboratory for Sustainable Energy, Technical University of Denmark3

Fuel Cells and Solid State Chemistry Division. Management, Fuel Cells and Solid State Chemistry Division, Risø National Laboratory for Sustainable Energy, Technical University of Denmark4

Thermoelectric properties of thick (~60 μm) films prepared by a screen-printing technique using p-type misfit-layered cobalt oxide Ca3Co4O9+δ with Ag addition have been studied. The screen-printed films were sintered in air at various temperatures ranging from 973 K to 1223 K. After each sintering process, crystal and microstructure analyses were carried out to determine the optimal sintering condition.

The results show that the thermoelectric properties of pure Ca3Co4O9+δ thick film are comparable to those of cold isostatic pressing (CIP) samples. We found that the maximum power factor was improved by about 67% (to 0.3 mW/m K2) for film with proper silver (Ag) metallic inclusions as compared with 0.18 mW/m K2 for pure Ca3Co4O9+δ film under the same sintering condition of 1223 K for 2 h in air.

Language: English
Publisher: Springer US
Year: 2012
Pages: 1280-1285
ISSN: 1543186x and 03615235
Types: Journal article
DOI: 10.1007/s11664-011-1848-x
ORCIDs: Van Nong, Ngo , Pryds, Nini and Linderoth, Søren
Keywords

Misfit-layered cobaltite Nanoinclusions Power factor Thermoelectric oxide

Other keywords

Characterization and Evaluation of Materials Electronics and Microelectronics, Instrumentation Material Science Optical and Electronic Materials Solid State Physics nanoinclusions power factor thermoelectric oxide

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