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Article: Giant thermopower of ionic gelatin near room temperature

TitleGiant thermopower of ionic gelatin near room temperature
Authors
Keywordsdetection method
electricity
equipment
Internet
temperature effect
Issue Date2020
PublisherAmerican Association for the Advancement of Science. The Journal's web site is located at http://sciencemag.org
Citation
Science, 2020, v. 368 n. 6495, p. 1091-1098 How to Cite?
AbstractHarvesting heat from the environment into electricity has the potential to power Internet-of-things (IoT) sensors, freeing them from cables or batteries and thus making them especially useful for wearable devices. We demonstrate a giant positive thermopower of 17.0 millivolts per degree Kelvin in a flexible, quasi-solid-state, ionic thermoelectric material using synergistic thermodiffusion and thermogalvanic effects. The ionic thermoelectric material is a gelatin matrix modulated with ion providers (KCl, NaCl, and KNO3) for thermodiffusion effect and a redox couple [Fe(CN)64–/Fe(CN)63–] for thermogalvanic effect. A proof-of-concept wearable device consisting of 25 unipolar elements generated more than 2 volts and a peak power of 5 microwatts using body heat. This ionic gelatin shows promise for environmental heat-to-electric energy conversion using ions as energy carriers.
Persistent Identifierhttp://hdl.handle.net/10722/288106
ISSN
2023 Impact Factor: 44.7
2023 SCImago Journal Rankings: 11.902
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorHan, CG-
dc.contributor.authorQian, X-
dc.contributor.authorLI, Q-
dc.contributor.authorDeng, B-
dc.contributor.authorZhu, Y-
dc.contributor.authorHan, Z-
dc.contributor.authorZhang, W-
dc.contributor.authorWang, W-
dc.contributor.authorFeng, SP-
dc.contributor.authorChen, G-
dc.contributor.authorLiu, W-
dc.date.accessioned2020-10-05T12:07:57Z-
dc.date.available2020-10-05T12:07:57Z-
dc.date.issued2020-
dc.identifier.citationScience, 2020, v. 368 n. 6495, p. 1091-1098-
dc.identifier.issn0036-8075-
dc.identifier.urihttp://hdl.handle.net/10722/288106-
dc.description.abstractHarvesting heat from the environment into electricity has the potential to power Internet-of-things (IoT) sensors, freeing them from cables or batteries and thus making them especially useful for wearable devices. We demonstrate a giant positive thermopower of 17.0 millivolts per degree Kelvin in a flexible, quasi-solid-state, ionic thermoelectric material using synergistic thermodiffusion and thermogalvanic effects. The ionic thermoelectric material is a gelatin matrix modulated with ion providers (KCl, NaCl, and KNO3) for thermodiffusion effect and a redox couple [Fe(CN)64–/Fe(CN)63–] for thermogalvanic effect. A proof-of-concept wearable device consisting of 25 unipolar elements generated more than 2 volts and a peak power of 5 microwatts using body heat. This ionic gelatin shows promise for environmental heat-to-electric energy conversion using ions as energy carriers.-
dc.languageeng-
dc.publisherAmerican Association for the Advancement of Science. The Journal's web site is located at http://sciencemag.org-
dc.relation.ispartofScience-
dc.rightsScience. Copyright © American Association for the Advancement of Science.-
dc.rightsThis is the author’s version of the work. It is posted here by permission of the AAAS for personal use, not for redistribution. The definitive version was published in [Science Journal Title] on [Volume number and date], DOI: [insert DOI number].-
dc.subjectdetection method-
dc.subjectelectricity-
dc.subjectequipment-
dc.subjectInternet-
dc.subjecttemperature effect-
dc.titleGiant thermopower of ionic gelatin near room temperature-
dc.typeArticle-
dc.identifier.emailFeng, SP: hpfeng@hku.hk-
dc.identifier.authorityFeng, SP=rp01533-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1126/science.aaz5045-
dc.identifier.pmid32354840-
dc.identifier.scopuseid_2-s2.0-85086007756-
dc.identifier.hkuros315430-
dc.identifier.volume368-
dc.identifier.issue6495-
dc.identifier.spage1091-
dc.identifier.epage1098-
dc.identifier.isiWOS:000539738400040-
dc.publisher.placeUnited States-
dc.identifier.issnl0036-8075-

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