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DC Field | Value | Language |
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dc.citation.endPage | 14051 | - |
dc.citation.number | 24 | - |
dc.citation.startPage | 14043 | - |
dc.citation.title | JOURNAL OF MATERIALS CHEMISTRY A | - |
dc.citation.volume | 9 | - |
dc.contributor.author | Thangavel, Pandiarajan | - |
dc.contributor.author | Kim, Guntae | - |
dc.contributor.author | Kim, Kwang S. | - |
dc.date.accessioned | 2023-12-21T15:43:00Z | - |
dc.date.available | 2023-12-21T15:43:00Z | - |
dc.date.created | 2021-06-26 | - |
dc.date.issued | 2021-06 | - |
dc.description.abstract | Developing practical water-splitting devices that convert earth-abundant solar energy and water into renewable fuel holds promise for a sustainable energy future; however, its successful commercialization for practical applications is limited by the sluggish kinetics of the oxygen evolution reaction (OER). Herein, we developed a high-efficiency and low-cost three-dimensional (3D) OER electrode via electrochemical integration of amorphous NiFeOOH on surface activated carbon fiber paper (CFP). The as-synthesized 3D-a-NiFeOOH/N-CFP electrode exhibits an ultra-low overpotential eta(O-2) of 170 mV to afford 10 mA cm(-2) current density, together with a Tafel slope of 39 mV per decade, and excellent stability under OER conditions. Apart from the synergistic effect, the excellent OER activity of a-NiFeOOH/N-CFP is attributed to the unique 3D structure with enriched active sites and the improved electrical conductivity that facilitates the fast OER kinetics and mass transport properties. As a result, the catalyst achieves a high turnover frequency (TOF) of 0.99 s(-1) and mass activity (j(m)) of 2527 A g(-1) at eta(O-2) 270 mV, which outperforms so far reported state-of-the-art OER catalysts and commercial IrO2. Besides, an alkaline anion exchange membrane water electrolyzer fabricated with the a-NiFeOOH/N-CFP anode delivers 1 A current at 1.88 V with a long-term durability of 240 h. These findings highlight the design of high-efficiency OER catalysts and significant advancements towards the utilization of NiFeOOH catalysts for commercial applications. | - |
dc.identifier.bibliographicCitation | JOURNAL OF MATERIALS CHEMISTRY A, v.9, no.24, pp.14043 - 14051 | - |
dc.identifier.doi | 10.1039/d1ta02883a | - |
dc.identifier.issn | 2050-7488 | - |
dc.identifier.scopusid | 2-s2.0-85108652627 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/53868 | - |
dc.identifier.url | https://pubs.rsc.org/en/content/articlelanding/2021/TA/D1TA02883A#!divAbstract | - |
dc.identifier.wosid | 000660080200001 | - |
dc.language | 영어 | - |
dc.publisher | ROYAL SOC CHEMISTRY | - |
dc.title | Electrochemical integration of amorphous NiFe (oxy)hydroxides on surface-activated carbon fibers for high-efficiency oxygen evolution in alkaline anion exchange membrane water electrolysis | - |
dc.type | Article | - |
dc.description.isOpenAccess | FALSE | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Physical; Energy & Fuels; Materials Science, Multidisciplinary | - |
dc.relation.journalResearchArea | Chemistry; Energy & Fuels; Materials Science | - |
dc.type.docType | Article; Early Access | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.subject.keywordPlus | BIFUNCTIONAL ELECTROCATALYSTS | - |
dc.subject.keywordPlus | CATALYST | - |
dc.subject.keywordPlus | HYDROXIDE | - |
dc.subject.keywordPlus | OXIDATION | - |
dc.subject.keywordPlus | FILMS | - |
dc.subject.keywordPlus | NANOSHEETS | - |
dc.subject.keywordPlus | FOAM | - |
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