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Selection of oxygen reduction catalysts for secondary tri-electrode zinc-air batteries

dc.contributor.authorLoh, A
dc.contributor.authorTrudgeon, DP
dc.contributor.authorLi, X
dc.contributor.authorLiu, M-C
dc.contributor.authorKong, L-B
dc.contributor.authorWalsh, FC
dc.date.accessioned2022-04-25T08:45:53Z
dc.date.issued2022-04-23
dc.date.updated2022-04-25T08:13:56Z
dc.description.abstractOxygen reduction reaction (ORR) electrocatalysts, which are highly efficient, low-cost, yet durable, are important for secondary Zn-air cell applications. ORR activities of single and mixed metal oxide and carbon electrocatalysts were studied using rotating disc electrode (RDE) measurements, Tafel slope and Koutecky-Levich plots. It was found that MnOx combined with XC-72R demonstrated high ORR activity and good stability – up to 100 mA cm-2. The performance of the selected ORR electrode and a previously optimised oxygen evolution reaction (OER) electrode was thereafter tested in a custom-built secondary Zn-air cell in a tri-electrode configuration, and the effects of current density, electrolyte molarity, temperature, and oxygen purity on the performance of the ORR and OER electrode were investigated. Finally, the durability of the secondary Zn-air system was assessed, demonstrating energy efficiencies of 58-61% at 20 mA cm-2 over 40 h in 4 M NaOH + 0.3 M ZnO at 333 K.en_GB
dc.description.sponsorshipEngineering and Physical Sciences Research Council (EPSRC)en_GB
dc.description.sponsorshipUniversity of Exeteren_GB
dc.description.sponsorshipEuropean Regional Development Fund (ERDF)en_GB
dc.description.sponsorshipRoyal Academy of Engineering (RAE)en_GB
dc.identifier.citationVol. 12, article 6696en_GB
dc.identifier.doi10.1038/s41598-022-10671-5
dc.identifier.grantnumberEP/P003494/1en_GB
dc.identifier.grantnumber2S03-019en_GB
dc.identifier.grantnumberUKDE\100005en_GB
dc.identifier.urihttp://hdl.handle.net/10871/129436
dc.identifierORCID: 0000-0003-4450-4617 (Li, Xiaohong)
dc.language.isoenen_GB
dc.publisherNature Researchen_GB
dc.rights© The Author(s) 2022. Open Access. This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.en_GB
dc.subjectalkaline batteryen_GB
dc.subjectmanganese oxideen_GB
dc.subjectoxygen reduction reactionen_GB
dc.subjectsecondary Zn-air cellen_GB
dc.titleSelection of oxygen reduction catalysts for secondary tri-electrode zinc-air batteriesen_GB
dc.typeArticleen_GB
dc.date.available2022-04-25T08:45:53Z
dc.identifier.issn2045-2322
dc.descriptionThis is the final version. Available on open access from Nature Research via the DOI in this recorden_GB
dc.identifier.journalScientific Reportsen_GB
dc.relation.ispartofScientific Reports
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/en_GB
dcterms.dateAccepted2022-03-29
rioxxterms.versionVoRen_GB
rioxxterms.licenseref.startdate2022-03-29
rioxxterms.typeJournal Article/Reviewen_GB
refterms.dateFCD2022-04-25T08:14:09Z
refterms.versionFCDAM
refterms.dateFOA2022-04-25T08:46:00Z
refterms.panelBen_GB


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© The Author(s) 2022. Open Access. This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.
Except where otherwise noted, this item's licence is described as © The Author(s) 2022. Open Access. This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.