Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/162820
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dc.contributor.authorLi, Xiaoyaen_US
dc.contributor.authorLi, Jiaen_US
dc.contributor.authorYun, Jeonghunen_US
dc.contributor.authorWu, Angyinen_US
dc.contributor.authorGao, Caitianen_US
dc.contributor.authorLee, Seok Wooen_US
dc.date.accessioned2022-11-10T05:12:44Z-
dc.date.available2022-11-10T05:12:44Z-
dc.date.issued2022-
dc.identifier.citationLi, X., Li, J., Yun, J., Wu, A., Gao, C. & Lee, S. W. (2022). Continuous thermally regenerative electrochemical systems for directly converting low-grade heat to electricity. Nano Energy, 101, 107547-. https://dx.doi.org/10.1016/j.nanoen.2022.107547en_US
dc.identifier.issn2211-2855en_US
dc.identifier.urihttps://hdl.handle.net/10356/162820-
dc.description.abstractThermally regenerative electrochemical cycle (TREC) system, which converts heat to electricity by charging at a lower voltage and discharging at a higher voltage, is a promising technology with high energy conversion efficiency for low-grade heat recovery. However, its charging process consumes additional energy and breaks the continuity of power generation. Herein, we present a continuously operated TREC system for direct heat-to-electricity conversion. In this system, two identical electrochemical cells operating at different temperatures are combined in a unit; thus, electricity can be generated continuously by periodically alternating between two temperatures. This concept is mainly demonstrated with a copper hexacyanoferrate cathode and a Cu/Cu2+ anode, with this system achieving an energy conversion efficiency of 1.76% (14.19% of Carnot efficiency) when operated between 10 and 50 °C without heat recuperation effects. Even at an ultralow temperature difference of 10 °C vs room temperature, its efficiency is 0.98%. The proposed system allows great freedom in electrode material selection as proven by another system with nickel hexacyanoferrate cathode and Ag/AgCl anode, thereby improving the flexibility and practicability of TREC systems in low-grade heat harvesting.en_US
dc.description.sponsorshipMinistry of Education (MOE)en_US
dc.language.isoenen_US
dc.relationMOE2019-T2-1-122en_US
dc.relation.ispartofNano Energyen_US
dc.rights© 2022 Elsevier Ltd. All rights reserved. This paper was published in Nano Energy and is made available with permission of Elsevier Ltd.en_US
dc.subjectEngineering::Electrical and electronic engineeringen_US
dc.titleContinuous thermally regenerative electrochemical systems for directly converting low-grade heat to electricityen_US
dc.typeJournal Articleen
dc.contributor.schoolSchool of Electrical and Electronic Engineeringen_US
dc.contributor.researchRolls-Royce@NTU Corporate Laben_US
dc.identifier.doi10.1016/j.nanoen.2022.107547-
dc.description.versionSubmitted/Accepted versionen_US
dc.identifier.scopus2-s2.0-85133691569-
dc.identifier.volume101en_US
dc.identifier.spage107547en_US
dc.subject.keywordsLow-Grade Heaten_US
dc.subject.keywordsEnergy Harvestingen_US
dc.description.acknowledgementThis work was supported by Ministry of Education, Singapore under ref. no. MOE2019-T2-1-122.en_US
item.fulltextWith Fulltext-
item.grantfulltextembargo_20241107-
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