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Keywords = thermoelectric Ca cobaltite

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18 pages, 10098 KB  
Article
Planar Thermoelectric Microgenerators in Application to Power RFID Tags
by Andrzej Dziedzic, Szymon Wójcik, Mirosław Gierczak, Slavko Bernik, Nana Brguljan, Kathrin Reinhardt and Stefan Körner
Sensors 2024, 24(5), 1646; https://doi.org/10.3390/s24051646 - 2 Mar 2024
Cited by 4 | Viewed by 2493
Abstract
This paper presents an innovative approach to the integration of thermoelectric microgenerators (μTEGs) based on thick-film thermopiles of planar constantan–silver (CuNi-Ag) and calcium cobaltite oxide–silver (Ca3Co4O9-Ag) thick-film thermopiles with radio frequency identification (RFID) technology. The goal was [...] Read more.
This paper presents an innovative approach to the integration of thermoelectric microgenerators (μTEGs) based on thick-film thermopiles of planar constantan–silver (CuNi-Ag) and calcium cobaltite oxide–silver (Ca3Co4O9-Ag) thick-film thermopiles with radio frequency identification (RFID) technology. The goal was to consider using the TEG for an active or semi-passive RFID tag. The proposed implementation would allow the communication distance to be increased or even operated without changing batteries. This article discusses the principles of planar thermoelectric microgenerators (μTEGs), focusing on their ability to convert the temperature difference into electrical energy. The concept of integration with active or semi-passive tags is presented, as well as the results of energy efficiency tests, considering various environmental conditions. On the basis of the measurements, the parameters of thermopiles consisting of more thermocouples were simulated to provide the required voltage and power for cooperation with RFID tags. The conclusions of the research indicate promising prospects for the integration of planar thermoelectric microgenerators with RFID technology, opening the way to more sustainable and efficient monitoring and identification systems. Our work provides the theoretical basis and practical experimental data for the further development and implementation of this innovative technology. Full article
(This article belongs to the Special Issue RFID-Enabled Sensor Design and Applications)
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2 pages, 172 KB  
Abstract
Exploring the High-Temperature Thermoelectric Performance of La-Substituted Ca3Co4O9 Bulk Ceramics
by Gabriel Constantinescu, Daniela V. Lopes, Parisa Amirkhizi, Miguel A. Vieira and Andrei V. Kovalevsky
Mater. Proc. 2022, 8(1), 68; https://doi.org/10.3390/materproc2022008068 - 6 Jun 2022
Viewed by 1199
Abstract
It is well-known that the electrical properties of the Ca3Co4O9 thermoelectric (TE) compound are strongly influenced by the valence of the substituting cation, while its solubility and “functional” impact depend largely on the preparation and/or processing methods used [...] Full article
(This article belongs to the Proceedings of MATERIAIS 2022)
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