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DC Field | Value | Language |
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dc.citation.endPage | 3458 | - |
dc.citation.number | 10 | - |
dc.citation.startPage | 3447 | - |
dc.citation.title | ENERGY & ENVIRONMENTAL SCIENCE | - |
dc.citation.volume | 13 | - |
dc.contributor.author | Thangavel, Pandiarajan | - |
dc.contributor.author | Ha, Miran | - |
dc.contributor.author | Kumaraguru, Shanmugasundaram | - |
dc.contributor.author | Meena, Abhishek | - |
dc.contributor.author | Singh, Aditya Narayan | - |
dc.contributor.author | Harzandi, Ahmad M. | - |
dc.contributor.author | Kim, Kwang S. | - |
dc.date.accessioned | 2023-12-21T16:49:32Z | - |
dc.date.available | 2023-12-21T16:49:32Z | - |
dc.date.created | 2020-11-05 | - |
dc.date.issued | 2020-10 | - |
dc.description.abstract | Practical hydrogen production using high-efficiency, low-cost, and stable oxygen electrodes is crucial for a sustainable clean energy future. Herein we report a graphene-nanoplatelets-supported (Ni,Fe) metal-organic framework (MOF) as a superior and ultra-durable (>1000 h) anode for alkaline water electrolysis. The MOF on carbon-fiber paper electrodes requires an overpotential eta = 220 mV to achieve a current density j = 10 mA cm(-2) (eta = 180 mV on nickel foam for j = 20 mA cm(-2)) with a Tafel slope of 51 mV per decade, high turnover frequency (1.22 s(-1)), high faradaic efficiency (99.1%), and long-term durability of 41000 h in continuous electrolysis. In an alkaline anion exchange membrane water electrolyzer (AAEMWE), it exhibits a record current density of 540 mA cm(-2) at 1.85 V at 70 degrees C, outperforming the state-of-the-art Pt/C//IrO2. A breakthrough strategy introduced in membrane electrode assembly fabrication by extending the electrical contact with an aqueous electrolyte offers an additional OH- transport pathway to regenerate the original conductivity of the AAEMWE in continuous electrolysis, without any significant change in the pH of the electrolyte. These findings open up durable, high-performance AAEMWE and direct solar-to-fuel conversion, especially to replace high-cost proton exchange membrane water electrolysis that already works with ultra-pure water. | - |
dc.identifier.bibliographicCitation | ENERGY & ENVIRONMENTAL SCIENCE, v.13, no.10, pp.3447 - 3458 | - |
dc.identifier.doi | 10.1039/d0ee00877j | - |
dc.identifier.issn | 1754-5692 | - |
dc.identifier.scopusid | 2-s2.0-85091301562 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/48873 | - |
dc.identifier.url | https://pubs.rsc.org/en/content/articlelanding/2020/EE/D0EE00877J#!divAbstract | - |
dc.identifier.wosid | 000579868500037 | - |
dc.language | 영어 | - |
dc.publisher | Royal Society of Chemistry | - |
dc.title | Graphene-nanoplatelets-supported NiFe-MOF: high-efficiency and ultra-stable oxygen electrodes for sustained alkaline anion exchange membrane water electrolysis | - |
dc.type | Article | - |
dc.description.isOpenAccess | FALSE | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Multidisciplinary; Energy & Fuels; Engineering, Chemical; Environmental Sciences | - |
dc.relation.journalResearchArea | Chemistry; Energy & Fuels; Engineering; Environmental Sciences & Ecology | - |
dc.type.docType | Article | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.subject.keywordPlus | METAL-ORGANIC FRAMEWORKS | - |
dc.subject.keywordPlus | EVOLUTION REACTION | - |
dc.subject.keywordPlus | NICKEL-OXIDE | - |
dc.subject.keywordPlus | ELECTROCATALYSTS | - |
dc.subject.keywordPlus | CATALYST | - |
dc.subject.keywordPlus | NANOPARTICLES | - |
dc.subject.keywordPlus | NANOSHEETS | - |
dc.subject.keywordPlus | HYDROXIDE | - |
dc.subject.keywordPlus | SPECTRA | - |
dc.subject.keywordPlus | SHEETS | - |
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