Jeffrey Snyder, G.

Le, Thanh Hung

Linderoth, Søren

Pryds, Nini

Van Nong, Ngo

Thermoelectric (TE) power generator using TE materials which directly convert heat into electricity offers a viable environmental friendly technology for waste heat recovery. Recently, TE oxide modules have gained much attraction since they are composed of cheap materials and are stable at high temperatures up to 1200 K, where most the conventional TE materials based on alloys are often degraded over the time. In this report, oxide TE materials of p­type Ca3Co4O9, n­types ZnAlO, and CaMn0.95Nb0.05O3 were used to fabricate high temperature TE segmented modules. These oxide materials were prepared by solid­state reaction, followed by a spark plasma sintering technique, and their thermoelectric properties were characterized from 300 to 1200 K. The module performance was first investigated by numerical modeling using the experimental thermoelectric properties data as input parameters. In these calculations, the power generation characteristics were investigated in terms of various n-­leg selections (ZnAlO, CaMn0.95Nb0.05O3, and segmented ZnAlO/CaMn0.95Nb0.05O3), while the p-leg Ca3Co4O9 was fixed. Based on the model predication, several modules were fabricated, tested, and compared again with the theoretical calculations. The obtained results are discussed in details and also compared with other reported oxide modules.</p

Online Research Database In Technology

                       General rights Copyright and moral rights for the publications made accessible in the public portal are retained by the authors and/or other copyright owners and it is a condition of accessing publications that users recognise and abide by the legal requirements associated with these rights.  • Users may download and print one copy of any publication from the public portal for the purpose of private study or research. • You may not further distribute the material or use it for any profit-making activity or commercial gain • You may freely distribute the URL identifying the publication in the public portal   If you believe that this document breaches copyright please contact us providing details, and we will remove access to the work immediately and investigate your claim.     Downloaded from orbit.dtu.dk on: Dec 20, 2017High-temperature segmented thermoelectric oxide module using p-type Ca3Co4O9 andn-type ZnAlO/CaMn0.95Nb0.05O3 legsLe, Thanh Hung; Van Nong, Ngo; Jeffrey Snyder, G.; Pryds, Nini; Linderoth, SørenPublication date:2012Document VersionPublisher's PDF, also known as Version of recordLink back to DTU OrbitCitation (APA):Le, T. H., Van Nong, N., Jeffrey Snyder, G., Pryds, N., & Linderoth, S. (2012). High-temperature segmentedthermoelectric oxide module using p-type Ca3Co4O9 and n-type ZnAlO/CaMn0.95Nb0.05O3 legs. Abstract from6th International Workshop on Advanced Materials Science and Nanotechnology, Ha Long City, Viet Nam.The 6th International Workshop on Advanced Materials Science and Nanotechnology (IWAMSN2012) ­ Halong, Vietnam – Oct. 30 – Nov. 2, 2012  108  (CODE: MEP7-O6)  HIGH-TEMPERATURE SEGMENTED THERMOELECTRIC OXIDE MODULE USING p-TYPE Ca3Co4O9 AND n-TYPE ZnAlO/CaMn0.95Nb0.05O3 Legs  Le Thanh Hung1, Ngo Van Nong1, G. Jeffrey Snyder2, Nini Pryds1 and Søren Linderoth1 1Department of Energy Conversion and Storage, Technical University of Denmark, DTU Risø Campus, 4000 Roskilde, Denmark. 2Jet Propulsion Laboratory/California Institute of Technology, 4800 Oak Grove Drive, Pasadena CA 91109 USA E­mail: lthh@dtu.dk    ABSTRACT  Thermoelectric (TE) power generator using TE materials which directly convert heat into electricity offers a viable environmental friendly technology for waste heat recovery. Recently, TE oxide modules have gained much attraction since they are composed of cheap materials and are stable at high temperatures up to 1200 K, where most the conventional TE materials based on alloys are often degraded over the time. In this report, oxide TE materials of p­type Ca3Co4O9, n­types ZnAlO, and CaMn0.95Nb0.05O3 were used to fabricate high temperature TE segmented modules. These oxide materials were prepared by solid­state reaction, followed by a spark plasma sintering technique, and their thermoelectric properties were characterized from 300 to 1200 K. The module performance was first investigated by numerical modeling using the experimental thermoelectric properties data as input parameters. In these calculations, the power generation characteristics were investigated in terms of various n­leg selections (ZnAlO, CaMn0.95Nb0.05O3, and segmented ZnAlO/CaMn0.95Nb0.05O3), while the p­leg Ca3Co4O9 was fixed. Based on the model predication, several modules were fabricated, tested, and compared again with the theoretical calculations. The obtained results are discussed in details and also compared with other reported oxide modules.  

High-temperature segmented thermoelectric oxide module using p-type Ca3Co4O9 and n-type ZnAlO/CaMn0.95Nb0.05O3 legs

http://orbit.dtu.dk/ws/files/52793929/MEP7_06_IWAMSN2012_Abstract_Book.pdf

High-temperature segmented thermoelectric oxide module using <em>p</em>-type Ca<sub>3</sub>Co<sub>4</sub>O<sub>9</sub> and <em>n</em>-type ZnAlO/CaMn<sub>0.95</sub>Nb<sub>0.05</sub>O<sub>3</sub> legs

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