Partially amorphous iron-copper-nickel sulfides for robust bifunctional electrocatalysis

Bifunctional electrocatalysts are in demand to pursue dual functions in applications like energy conversion and pollution treatment. In this study, we synthesize the iron-copper-nickel sulfide (FeCuNiS) catalysts with partial amorphous character via the hydrothermal method. The iron rich composition with optimal copper and nickel ratios exhibits robust performances on hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) in alkaline conditions. The partial amorphous feature offers more active sites for reaction due to the partial disordered structure. The partially amorphous FeCuNiS exhibits lower overpotential for HER and OER at 50 mAcm<sup>- 2</sup>. Moreover, all compositions were found to be electrocatalytically stable. The optimum design and synthesis strategy of the partially amorphous bifunctional electrocatalysts provided in this work will open pathways to advanced electrocatalysts for energy conversion applications.

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Publication Details

Journal
Scientific Reports
Published
2025-11-28
DOI
https://doi.org/10.1038/s41598-025-29540-y
Primary Topic
Electrocatalysts for Energy Conversion
Type
article
Field-Weighted Citation Impact
0.00

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article

Partially amorphous iron-copper-nickel sulfides for robust bifunctional electrocatalysis

It Ee Lee, Jean‐Michel Nunzi, Mehak Ghafoor, Md. Shahiduzzaman et al.
Scientific Reports
Electrocatalysts for Energy Conversion
article

Partially amorphous iron-copper-nickel sulfides for robust bifunctional electrocatalysis

It Ee Lee, Jean‐Michel Nunzi, Mehak Ghafoor, Md. Shahiduzzaman, Sher Muhammad, Vidhya Selvanathan, Tetsuya Taima, Qamar Wali, Muhammad Aamir, Hamad Fahad Alharbi
article en

Abstract

Bifunctional electrocatalysts are in demand to pursue dual functions in applications like energy conversion and pollution treatment. In this study, we synthesize the iron-copper-nickel sulfide (FeCuNiS) catalysts with partial amorphous character via the hydrothermal method. The iron rich composition with optimal copper and nickel ratios exhibits robust performances on hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) in alkaline conditions. The partial amorphous feature offers more active sites for reaction due to the partial disordered structure. The partially amorphous FeCuNiS exhibits lower overpotential for HER and OER at 50 mAcm<sup>- 2</sup>. Moreover, all compositions were found to be electrocatalytically stable. The optimum design and synthesis strategy of the partially amorphous bifunctional electrocatalysts provided in this work will open pathways to advanced electrocatalysts for energy conversion applications.

Scientific ReportsVol. 15(1)
Kanazawa University (JP), Multimedia University (MY), Allama Iqbal Open University (PK), King Saud University (SA), Queens University (BD), Dhaka University of Engineering & Technology (BD), Mirpur University of Science and Technology (PK), Universiti Tenaga Nasional (MY)
Multimedia University, Natural Sciences and Engineering Research Council of Canada
Openalex Percentile: Top 73%
Electrocatalysts for Energy Conversion
DOIOpen Access PDFOpenAlex
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