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Article: Asymmetric Thermoelectrochemical Cell for Harvesting Low-grade Heat under Isothermal Operation

TitleAsymmetric Thermoelectrochemical Cell for Harvesting Low-grade Heat under Isothermal Operation
Authors
Issue Date2020
PublisherJournal of Visualized Experiments. The Journal's web site is located at http://www.jove.com
Citation
Journal of Visualized Experiments, 2020, v. 156, p. article no. e60768 How to Cite?
AbstractLow-grade heat is abundantly available in the environment as waste heat. The efficient conversion of low-grade heat into electricity is very difficult. We developed an asymmetric thermoelectrochemical cell (aTEC) for heat-to-electricity conversion under isothermal operation in the charging and discharging processes without exploiting the thermal gradient or the thermal cycle. The aTEC is composed of a graphene oxide (GO) cathode, a polyaniline (PANI) anode, and 1M KCl as the electrolyte. The cell generates a voltage due to the pseudocapacitive reaction of GO when heating from room temperature (RT) to a high temperature (TH, ~40-90 °C), and then current is successively produced by oxidizing PANI when an external electrical load is connected. The aTEC demonstrates a remarkable temperature coefficient of 4.1 mV/K and a high heat-to-electricity conversion efficiency of 3.32%, working at a TH = 70 °C with a Carnot efficiency of 25.3%, unveiling a new promising thermoelectrochemical technology for low-grade heat recovery.
Persistent Identifierhttp://hdl.handle.net/10722/284827
ISSN
2019 Impact Factor: 1.163
2015 SCImago Journal Rankings: 0.451

 

DC FieldValueLanguage
dc.contributor.authorMU, K-
dc.contributor.authorWANG, X-
dc.contributor.authorLI, KH-
dc.contributor.authorHuang, YT-
dc.contributor.authorFeng, SP-
dc.date.accessioned2020-08-07T09:03:08Z-
dc.date.available2020-08-07T09:03:08Z-
dc.date.issued2020-
dc.identifier.citationJournal of Visualized Experiments, 2020, v. 156, p. article no. e60768-
dc.identifier.issn1940-087X-
dc.identifier.urihttp://hdl.handle.net/10722/284827-
dc.description.abstractLow-grade heat is abundantly available in the environment as waste heat. The efficient conversion of low-grade heat into electricity is very difficult. We developed an asymmetric thermoelectrochemical cell (aTEC) for heat-to-electricity conversion under isothermal operation in the charging and discharging processes without exploiting the thermal gradient or the thermal cycle. The aTEC is composed of a graphene oxide (GO) cathode, a polyaniline (PANI) anode, and 1M KCl as the electrolyte. The cell generates a voltage due to the pseudocapacitive reaction of GO when heating from room temperature (RT) to a high temperature (TH, ~40-90 °C), and then current is successively produced by oxidizing PANI when an external electrical load is connected. The aTEC demonstrates a remarkable temperature coefficient of 4.1 mV/K and a high heat-to-electricity conversion efficiency of 3.32%, working at a TH = 70 °C with a Carnot efficiency of 25.3%, unveiling a new promising thermoelectrochemical technology for low-grade heat recovery.-
dc.languageeng-
dc.publisherJournal of Visualized Experiments. The Journal's web site is located at http://www.jove.com-
dc.relation.ispartofJournal of Visualized Experiments-
dc.rightsJournal of Visualized Experiments. Copyright © Journal of Visualized Experiments.-
dc.titleAsymmetric Thermoelectrochemical Cell for Harvesting Low-grade Heat under Isothermal Operation-
dc.typeArticle-
dc.identifier.emailHuang, YT: ythuang@connect.hku.hk-
dc.identifier.emailFeng, SP: hpfeng@hku.hk-
dc.identifier.authorityFeng, SP=rp01533-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.3791/60768-
dc.identifier.pmid32091002-
dc.identifier.scopuseid_2-s2.0-85079911399-
dc.identifier.hkuros311958-
dc.identifier.volume156-
dc.identifier.spagearticle no. e60768-
dc.identifier.epagearticle no. e60768-
dc.publisher.placeUnited States-

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