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DC Field | Value | Language |
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dc.contributor.author | Li, Xiaoya | en_US |
dc.contributor.author | Li, Jia | en_US |
dc.contributor.author | Yun, Jeonghun | en_US |
dc.contributor.author | Wu, Angyin | en_US |
dc.contributor.author | Gao, Caitian | en_US |
dc.contributor.author | Lee, Seok Woo | en_US |
dc.date.accessioned | 2022-11-10T05:12:44Z | - |
dc.date.available | 2022-11-10T05:12:44Z | - |
dc.date.issued | 2022 | - |
dc.identifier.citation | Li, 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.2022.107547 | en_US |
dc.identifier.issn | 2211-2855 | en_US |
dc.identifier.uri | https://hdl.handle.net/10356/162820 | - |
dc.description.abstract | Thermally 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.sponsorship | Ministry of Education (MOE) | en_US |
dc.language.iso | en | en_US |
dc.relation | MOE2019-T2-1-122 | en_US |
dc.relation.ispartof | Nano Energy | en_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.subject | Engineering::Electrical and electronic engineering | en_US |
dc.title | Continuous thermally regenerative electrochemical systems for directly converting low-grade heat to electricity | en_US |
dc.type | Journal Article | en |
dc.contributor.school | School of Electrical and Electronic Engineering | en_US |
dc.contributor.research | Rolls-Royce@NTU Corporate Lab | en_US |
dc.identifier.doi | 10.1016/j.nanoen.2022.107547 | - |
dc.description.version | Submitted/Accepted version | en_US |
dc.identifier.scopus | 2-s2.0-85133691569 | - |
dc.identifier.volume | 101 | en_US |
dc.identifier.spage | 107547 | en_US |
dc.subject.keywords | Low-Grade Heat | en_US |
dc.subject.keywords | Energy Harvesting | en_US |
dc.description.acknowledgement | This work was supported by Ministry of Education, Singapore under ref. no. MOE2019-T2-1-122. | en_US |
item.fulltext | With Fulltext | - |
item.grantfulltext | embargo_20241107 | - |
Appears in Collections: | EEE Journal Articles |
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File | Description | Size | Format | |
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Continuous thermally regenerative electrochemical systems for directly converting low grade heat to electricity.pdf Until 2024-11-07 | 1.54 MB | Adobe PDF | Under embargo until Nov 07, 2024 |
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