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DC Field | Value | Language |
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dc.citation.number | 5 | - |
dc.citation.startPage | 2003561 | - |
dc.citation.title | ADVANCED ENERGY MATERIALS | - |
dc.citation.volume | 11 | - |
dc.contributor.author | Qin, Qing | - |
dc.contributor.author | Jang, Haeseong | - |
dc.contributor.author | Wang, Yimeng | - |
dc.contributor.author | Zhang, Lijie | - |
dc.contributor.author | Li, Zijian | - |
dc.contributor.author | Kim, Min Gyu | - |
dc.contributor.author | Liu, Shangguo | - |
dc.contributor.author | Liu, Xien | - |
dc.contributor.author | Cho, Jaephil | - |
dc.date.accessioned | 2023-12-21T16:16:26Z | - |
dc.date.available | 2023-12-21T16:16:26Z | - |
dc.date.created | 2021-02-19 | - |
dc.date.issued | 2021-02 | - |
dc.description.abstract | Developing highly active, durable, and cost-effective electrocatalysts for the oxygen evolution reaction (OER) is of prime importance in proton exchange membrane (PEM) water electrolysis techniques. Herein, a surface lanthanum-deficient (SLD) iridium oxide as a highly efficient OER electrocatalyst is reported (labeled as La3IrO7-SLD), which is obtained by electrochemical activation, and shows better activity and durability than that of commerically available IrO2 as well as most of the reported Ir-based OER electrocatalysts. At a current density of 10 mA cm(-2), the overpotential of La3IrO7-SLD is 296 mV, which is lower than that of IrO2 (316 mV). Impressively, the increase of potential is less than 50 mV at a voltage-time chronopotentiometry extending for 60 000 s using a glass carbon electrode that is vastly superior to IrO2. Moreover, the mass activity of the catalyst is approximately five times higher than that of IrO2 at 1.60 V versus reversible hydrogen electrode. Density functional theory calculations suggest that a lattice oxygen participating mechanism with central Ir atoms serving as active sites (LOM-Ir) rationalizes the high activity and durability for the La3IrO7-SLD electrocatalyst. The favorable energy level of surface active Ir 5d orbitals relative to coordinated O 2p orbitals makes the La3IrO7-SLD more active. | - |
dc.identifier.bibliographicCitation | ADVANCED ENERGY MATERIALS, v.11, no.5, pp.2003561 | - |
dc.identifier.doi | 10.1002/aenm.202003561 | - |
dc.identifier.issn | 1614-6832 | - |
dc.identifier.scopusid | 2-s2.0-85098145154 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/50032 | - |
dc.identifier.url | https://onlinelibrary.wiley.com/doi/10.1002/aenm.202003561 | - |
dc.identifier.wosid | 000602550600001 | - |
dc.language | 영어 | - |
dc.publisher | WILEY-V C H VERLAG GMBH | - |
dc.title | Gettering La Effect from La3IrO7 as a Highly Efficient Electrocatalyst for Oxygen Evolution Reaction in Acid Media | - |
dc.type | Article | - |
dc.description.isOpenAccess | FALSE | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Physical; Energy & Fuels; Materials Science, Multidisciplinary; Physics, Applied; Physics, Condensed Matter | - |
dc.relation.journalResearchArea | Chemistry; Energy & Fuels; Materials Science; Physics | - |
dc.type.docType | Article | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.subject.keywordAuthor | durability | - |
dc.subject.keywordAuthor | electrocatalysts | - |
dc.subject.keywordAuthor | energy conversion | - |
dc.subject.keywordAuthor | heterogenous catalysis | - |
dc.subject.keywordAuthor | oxygen evolution reaction | - |
dc.subject.keywordPlus | IRIDIUM OXIDE | - |
dc.subject.keywordPlus | WATER OXIDATION | - |
dc.subject.keywordPlus | CATALYST | - |
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