Journal
CONSTRUCTION AND BUILDING MATERIALS
Volume 272, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.conbuildmat.2020.121615
Keywords
Seebeck effect; Metakaolin; Geopolymer; Pore solution; Figure of merit
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Funding
- Ministry of National Development under its Land & Liveability National Innovation Challenge Programme [L2NICCFPI-2013-4]
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This study examines the Seebeck effect of metakaolin-based geopolymer, showing high Seebeck coefficient and superior thermoelectric figure of merit, indicating its potential for use as a thermoelectric material.
This paper reports the Seebeck effect of metakaolin-based geopolymer and discusses potential mechanisms. Results show that metakaolin-based geopolymer is a P-type thermoelectric material with very high Seebeck coefficient of around 2000 mu N/degrees C, four orders higher than the normal PC paste. Furthermore, metakaolin-based geopolymers exhibit a superior thermoelectric figure of merit (ZT) of around 10(-4), six orders higher than the normal PC paste. This suggests metakaolin-based geopolymer not only can be used as a thermal couple for temperature sensing but also has great potential to be used as an energy generator for thermal energy harvesting. (C) 2020 Elsevier Ltd. All rights reserved.
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