Journal
CHEMIE INGENIEUR TECHNIK
Volume 94, Issue 1-2, Pages 177-185Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cite.202100128
Keywords
Ca3Co4O9; Electrical conductivity; Energy harvesting; Laser sintering; Thermoelectric materials
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Funding
- Projekt DEAL
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This study found that the combination of laser sintering and subsequent thermal sintering is promising for the preparation of thermoelectric films, with great potential to improve the processing of thermoelectric materials.
The manufacturing technology of thermoelectric materials is laborious and expensive often including complex and time-intensive preparation steps. In this work, a laser sintering process of the oxide-based thermoelectric material Ca3Co4O9 is investigated. Samples based on spray-coated Ca3Co4O9 were prepared and subsequently sintered under various laser parameters and investigated in terms of the microstructure and thermoelectric properties. Here, the combination of laser sintering and subsequent thermal sintering proved to be a promising concept for the preparation of thermoelectric films. Laser sintering can thus make a great contribution in improving the processing of thermoelectric materials, especially when films are applied that cannot be sintered under pressure.
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