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Title

Boosting the overall electrochemical water splitting performance of pentlandites through non-metallic heteroatom incorporation

Author
Publication Years
2022-10-21
DOI
Source Title
EISSN
2589-0042
Volume25Issue:10Pages:105148
Abstract

We report on synthesis of the heterotrimetallic pentlandite-type material FeCoNiS (FCNS) in presence of suitable phosphorus-(FCNSP) and nitrogen-(FCNSN) donors for the overall electrochemical water splitting. Throughout the experiments, a preferential incorporation of N into the FCNS-lattice is observed whereas the addition of phosphorus generally leads to metal-phosphate-FCNS composites. The obtained FCNSP, FCNSN, and FCNSNP facilitate the oxygen evolution reaction (OER) at 100 mAcm in 1.0M KOH with overpotentials of 479, 440, and 427 mV, respectively, outperforming the benchmark IrO (564 mV) and commercial Ni metal powder (>600 mV). Likewise, FCNSN and FCNSNP reveal an improved performance toward the hydrogen evolution reaction (HER) in 0.5M HSO outperforming the pristine FCNS. All materials revealed high stability and morphological robustness during OER and HER. Notably, DFT calculation suggests that N and P doping boost the OER activity of the pristine FCNS, whereas N doping enhances the HER activity.

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English
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Cited Times [WOS]:1
Document TypeJournal Article
Identifierhttp://kc.sustech.edu.cn/handle/2SGJ60CL/406181
DepartmentDepartment of Chemistry
Affiliation
1.Inorganic Chemistry I,Faculty for Chemistry and Biochemistry,Ruhr University Bochum,Bochum,44801,Germany
2.Department of Chemistry,Faculty of Science,Tanta University,Tanta,31527,Egypt
3.Department of Chemistry,Southern University of Science and Technology,Shenzhen,518055,China
4.Department of Chemistry and Key Laboratory of Organic Optoelectronics & Molecular Engineering of Ministry of Education,Tsinghua University,Beijing,100084,China
5.Fraunhofer Institute for Environmental,Safety and Energy Technology UMSICHT,Oberhausen,46047,Germany
6.Key Laboratory of Applied Surface and Colloid Chemistry,Ministry of Education,School of Chemistry and Chemical Engineering,Shaanxi Normal University,Xi'an,710119,China
Recommended Citation
GB/T 7714
Hegazy,Mohamed Barakat Zakaria,Harrath,Karim,Tetzlaff,David,et al. Boosting the overall electrochemical water splitting performance of pentlandites through non-metallic heteroatom incorporation[J]. iScience,2022,25(10):105148.
APA
Hegazy,Mohamed Barakat Zakaria.,Harrath,Karim.,Tetzlaff,David.,Smialkowski,Mathias.,Siegmund,Daniel.,...&Apfel,Ulf Peter.(2022).Boosting the overall electrochemical water splitting performance of pentlandites through non-metallic heteroatom incorporation.iScience,25(10),105148.
MLA
Hegazy,Mohamed Barakat Zakaria,et al."Boosting the overall electrochemical water splitting performance of pentlandites through non-metallic heteroatom incorporation".iScience 25.10(2022):105148.
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