Boosting hydrogen evolution on NiFeZn electrocatalyst by defect surface modulation using alkali etching
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Guo, W. | - |
dc.contributor.author | Kim, J. | - |
dc.contributor.author | Kim, H. | - |
dc.contributor.author | Kim, S.Y. | - |
dc.contributor.author | Ahn, Sang Hyun | - |
dc.date.accessioned | 2023-01-20T03:40:10Z | - |
dc.date.available | 2023-01-20T03:40:10Z | - |
dc.date.issued | 2023-01 | - |
dc.identifier.issn | 0360-3199 | - |
dc.identifier.issn | 1879-3487 | - |
dc.identifier.uri | https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/59971 | - |
dc.description.abstract | Developing highly efficient catalysts using facile approaches is important for accelerating the slow reaction kinetics of the alkaline hydrogen evolution reaction (HER) and ensuring cost-effective hydrogen production. In this study, we reported a facile alkali etching method to boost the HER activity immediately after electrodeposition of a NiFeZn catalyst on Ti paper. During etching, (oxy)hydroxides were formed on the surface, and Zn species were etched from the deposits, which resulted in a roughened surface with more valleys generated between grains, facilitating a faster mass transport during the electrochemical reaction. The etched catalyst exhibited a boosted HER overpotential of 57 mV at −10 mA/cm2 and accelerated HER kinetic with Tafel slope of 97 mV/dec compared with that of the pristine catalyst. Our results demonstrated an efficient approach for boosting the catalyst activity in the alkaline HER. © 2022 Hydrogen Energy Publications LLC | - |
dc.format.extent | 11 | - |
dc.language | 영어 | - |
dc.language.iso | ENG | - |
dc.publisher | Elsevier Ltd | - |
dc.title | Boosting hydrogen evolution on NiFeZn electrocatalyst by defect surface modulation using alkali etching | - |
dc.type | Article | - |
dc.identifier.doi | 10.1016/j.ijhydene.2022.10.115 | - |
dc.identifier.bibliographicCitation | International Journal of Hydrogen Energy, v.48, no.6, pp 2090 - 2100 | - |
dc.description.isOpenAccess | N | - |
dc.identifier.wosid | 000913977200001 | - |
dc.identifier.scopusid | 2-s2.0-85143499709 | - |
dc.citation.endPage | 2100 | - |
dc.citation.number | 6 | - |
dc.citation.startPage | 2090 | - |
dc.citation.title | International Journal of Hydrogen Energy | - |
dc.citation.volume | 48 | - |
dc.type.docType | Article | - |
dc.publisher.location | 영국 | - |
dc.subject.keywordAuthor | Alkali etching | - |
dc.subject.keywordAuthor | Cation defect | - |
dc.subject.keywordAuthor | Electrodeposition | - |
dc.subject.keywordAuthor | Hydrogen evolution reaction | - |
dc.subject.keywordAuthor | NiFeZn | - |
dc.subject.keywordPlus | CATHODE MATERIAL | - |
dc.subject.keywordPlus | CATALYST | - |
dc.subject.keywordPlus | ALLOY | - |
dc.relation.journalResearchArea | Chemistry | - |
dc.relation.journalResearchArea | Electrochemistry | - |
dc.relation.journalResearchArea | Energy & Fuels | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Physical | - |
dc.relation.journalWebOfScienceCategory | Electrochemistry | - |
dc.relation.journalWebOfScienceCategory | Energy & Fuels | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
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