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Elucidating the role of interface of Cu-Co hybrid metal oxide for oxygen reduction reaction in Zn-air batteries

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cris.virtual.departmentIndian Institute of Technology, Madras
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cris.virtual.departmentIndian Institute of Technology, Madras
cris.virtual.department#PLACEHOLDER_PARENT_METADATA_VALUE#
cris.virtual.departmentIndian Institute of Technology, Madras
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dc.contributor.authorMahato, Debashis
dc.contributor.authorPraveen, Aswin
dc.contributor.authorNivedha, L. K.
dc.contributor.authorGurusamy, Tamilselvi
dc.contributor.authorRamanujam, Kothandaraman
dc.contributor.authorHaridoss, Prathap
dc.contributor.authorThomas, Tiju
dc.date.accessioned2024-06-28T07:50:14Z
dc.date.available2024-06-28T07:50:14Z
dc.date.issued2024-03-01
dc.description.abstractEnergy security and sustainable energy are becoming more crucial in the current situation. As a result, fuel cells and metal-air batteries have recently received a lot of interest. However, these devices' main drawbacks are the slowness of the oxygen reduction reaction (ORR) and the expense of the catalyst. The necessity for high-performance noble-metal-free electrocatalysts is therefore urgent. This paper describes a CuOx-Co3O4-based heterostructure with nitrogen-doped carbon support (Cu/CuOx-Co3O4/NC-700) as an effective, durable, inexpensive ORR catalyst. The catalyst exhibits good ORR activity with a half-wave potential of 0.81 V vs. RHE with a 6.5 mA cm−2 limiting current density. The observed ORR performances are comparable with benchmark Pt/C catalysts. The Zn-air battery (ZAB), utilizing the synthesized Cu/CuOx-Co3O4/NC-700 catalyst, produces a high open circuit voltage (OCV) of 1.41 V. The catalyst also exhibits a superior specific capacity of 820 mAh gZn−1 and a higher peak power density of 103 mW cm−2. Cu/CuOx-Co3O4 and NC have a strong synergistic impact and are responsible for the enhanced ORR activity. Hence, Cu/CuOx-Co3O4 heterostructures introduced oxygen vacancies, high surface area, desirable charge transfer, and unsaturated chemical bonds in the interface to create a charge redistribution. As a result, the catalytic activity has improved significantly.
dc.identifier.articlenumber103924
dc.identifier.citedby0
dc.identifier.coverDisplayDateMarch 2024
dc.identifier.doi10.1016/j.surfin.2024.103924
dc.identifier.pageRange
dc.identifier.scopus2-s2.0-85194879422
dc.identifier.subtypear
dc.identifier.subtypeDescriptionArticle
dc.identifier.urihttps://irepose.iitm.ac.in/handle/IITM2023/70974
dc.relation.ispartofSurfaces and Interfaces
dc.relation.ispartofseriesSurfaces and Interfaces
dc.relation.issn24680230
dc.right0
dc.rightsfalse
dc.sourceSurfaces and Interfaces
dc.subjectCu-Co oxides | Electrocatalyst | Heterostructure | Oxygen reduction reaction | Zn-air battery
dc.titleElucidating the role of interface of Cu-Co hybrid metal oxide for oxygen reduction reaction in Zn-air batteries
dc.typeJournal
dspace.entity.typePublication
oaire.citation.volume46
person.affiliation.cityChennai
person.affiliation.countryIndia
person.affiliation.id60025757
person.affiliation.nameIndian Institute of Technology Madras
person.affiliation.nameIndian Institute of Technology Madras
person.affiliation.nameIndian Institute of Technology Madras
person.affiliation.nameIndian Institute of Technology Madras
person.affiliation.nameIndian Institute of Technology Madras
person.affiliation.nameIndian Institute of Technology Madras
person.affiliation.nameIndian Institute of Technology Madras
person.affiliation.nameIndian Institute of Technology Madras
person.identifier.orcid0009-0003-7815-3269
person.identifier.orcid0000-0003-2231-2665
person.identifier.orcid0000-0001-8322-6387
person.identifier.scopus-author-id57223147448
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person.identifier.scopus-author-id57218692280
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person.identifier.scopus-author-id57188585660
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