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Single Phase Trimetallic Spinel CoCrxRh2-xO4 Nanofibers for Highly Efficient Oxygen Evolution Reaction under Freshwater Mimicking Seawater Conditions
- Title
- Single Phase Trimetallic Spinel CoCrxRh2-xO4 Nanofibers for Highly Efficient Oxygen Evolution Reaction under Freshwater Mimicking Seawater Conditions
- Authors
- Jin D.; Woo H.; Prabhakaran S.; Lee Y.; Kim M.H.; Kim D.H.; Lee C.
- Ewha Authors
- 이종목; 이영미; 김명화
- SCOPUS Author ID
- 이종목
; 이영미
; 김명화![scopus](/images/layout/icon2.png)
- Issue Date
- 2023
- Journal Title
- Advanced Functional Materials
- ISSN
- 1616-301X
- Citation
- Advanced Functional Materials vol. 33, no. 25
- Keywords
- cobalt-chromium-rhodium spinel oxides (CoCr <sub>x</sub>Rh <sub>2-</sub><sub>x</sub>O <sub>4</sub>); nanofibers; oxygen evolution reactions; seawater electrocatalysis
- Publisher
- John Wiley and Sons Inc
- Indexed
- SCIE; SCOPUS
![scopus](/images/layout/scopus2.gif)
- Document Type
- Article
- Abstract
- Electrochemical water splitting is a promising pathway for sustainable oxygen production in terms of energy conversion. Seawater electrolysis, especially, is a sustainable approach to carbon-neutral energy conversion without reliance on freshwater; however, extreme corrosion of anodic electrode caused by highly corrosive Cl− is a main challenge of seawater oxidation. To address this issue, herein, nanofibers of trimetallic spinel CoCrxRh2-xO4 with various composition ratios are prepared for highly sustained water oxidation electrocatalysis. Among a series of CoCrxRh2-xO4, CoCr0.7Rh1.3O4 nanofibers exhibit excellent electrocatalytic activity for oxygen evolution reaction (OER): the highest mass activity, the lowest overpotential at 10 mA cm−2 and the smallest Tafel slope with robust long-term stability under alkaline electrolyte. In addition, CoCr0.7Rh1.3O4 nanofibers deliver better OER performances in simulated seawater than a commercial benchmark catalyst (IrO2 nanoparticles), demonstrating that feasibility of alkaline seawater electrolysis with CoCr0.7Rh1.3O4 nanofibers as an OER electrocatalyst. © 2023 Wiley-VCH GmbH.
- DOI
- 10.1002/adfm.202301559
- Appears in Collections:
- 자연과학대학 > 화학·나노과학전공 > Journal papers
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