Electrochemical deposition of bimetallic sulfides on novel BDD electrode for bifunctional alkaline seawater electrolysis
Abstract Seawater electrolysis is an ideal technology for obtaining clean energy—green hydrogen. Developing efficient bifunctional catalysts is crucial for hydrogen production through direct seawater electrolysis. Currently, metal substrates loaded with active catalysts are widely employed as electr...
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Nature Portfolio
2025-01-01
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| Online Access: | https://doi.org/10.1038/s41598-025-87104-6 |
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| author | Mingxu Li Genjie Chu Jiyun Gao Xiaolei Ye Ming Hou Shenghui Guo Yunchuan Li Ziqi Zhou Li Yang Pascal Briois |
| author_facet | Mingxu Li Genjie Chu Jiyun Gao Xiaolei Ye Ming Hou Shenghui Guo Yunchuan Li Ziqi Zhou Li Yang Pascal Briois |
| author_sort | Mingxu Li |
| collection | DOAJ |
| description | Abstract Seawater electrolysis is an ideal technology for obtaining clean energy—green hydrogen. Developing efficient bifunctional catalysts is crucial for hydrogen production through direct seawater electrolysis. Currently, metal substrates loaded with active catalysts are widely employed as electrodes for seawater electrolysis. However, the challenge of metal corrosion cannot be ignored. In this work, the boron-doped diamond (BDD) with excellent corrosion resistance was explored as a substrate for loading active catalysts in seawater electrolysis. A step-by-step electrodeposition method was used to fabricate the FeCoS/Ni/BDD electrode, effectively addressing the poor adhesion of the FeCoS active layer to the BDD substrate. The resulting electrode demonstrated interesting bifunctional catalytic performance, achieving oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) overpotentials of 425 mV and 360 mV, respectively, in alkaline simulated seawater (1 M KOH and 3.5 wt% NaCl) at a current density of 100 mA cm− 2. Furthermore, by increasing the KOH concentration in the alkaline simulated seawater to 3 M, the OER and HER overpotentials of the electrode significantly decreased to 383 and 300 mV, respectively. This work offers a novel approach for utilizing BDD substrates in the design of corrosion-resistant electrodes for alkaline seawater electrolysis. |
| format | Article |
| id | doaj-art-b846e73c02d24b77a45812546b212a0a |
| institution | Kabale University |
| issn | 2045-2322 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Nature Portfolio |
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| spelling | doaj-art-b846e73c02d24b77a45812546b212a0a2025-01-26T12:31:03ZengNature PortfolioScientific Reports2045-23222025-01-0115111210.1038/s41598-025-87104-6Electrochemical deposition of bimetallic sulfides on novel BDD electrode for bifunctional alkaline seawater electrolysisMingxu Li0Genjie Chu1Jiyun Gao2Xiaolei Ye3Ming Hou4Shenghui Guo5Yunchuan Li6Ziqi Zhou7Li Yang8Pascal Briois9Faculty of Metallurgical and Energy Engineering, Kunming University of Science and TechnologyFaculty of Metallurgical and Energy Engineering, Kunming University of Science and TechnologyFaculty of Metallurgical and Energy Engineering, Kunming University of Science and TechnologyFaculty of Metallurgical and Energy Engineering, Kunming University of Science and TechnologyFaculty of Metallurgical and Energy Engineering, Kunming University of Science and TechnologyFaculty of Metallurgical and Energy Engineering, Kunming University of Science and TechnologyFaculty of Metallurgical and Energy Engineering, Kunming University of Science and TechnologyFaculty of Metallurgical and Energy Engineering, Kunming University of Science and TechnologyFaculty of Metallurgical and Energy Engineering, Kunming University of Science and TechnologyFEMTO-ST Institute (UMR CNRS 6174), UBFC/UTBM. Site de MontbéliardAbstract Seawater electrolysis is an ideal technology for obtaining clean energy—green hydrogen. Developing efficient bifunctional catalysts is crucial for hydrogen production through direct seawater electrolysis. Currently, metal substrates loaded with active catalysts are widely employed as electrodes for seawater electrolysis. However, the challenge of metal corrosion cannot be ignored. In this work, the boron-doped diamond (BDD) with excellent corrosion resistance was explored as a substrate for loading active catalysts in seawater electrolysis. A step-by-step electrodeposition method was used to fabricate the FeCoS/Ni/BDD electrode, effectively addressing the poor adhesion of the FeCoS active layer to the BDD substrate. The resulting electrode demonstrated interesting bifunctional catalytic performance, achieving oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) overpotentials of 425 mV and 360 mV, respectively, in alkaline simulated seawater (1 M KOH and 3.5 wt% NaCl) at a current density of 100 mA cm− 2. Furthermore, by increasing the KOH concentration in the alkaline simulated seawater to 3 M, the OER and HER overpotentials of the electrode significantly decreased to 383 and 300 mV, respectively. This work offers a novel approach for utilizing BDD substrates in the design of corrosion-resistant electrodes for alkaline seawater electrolysis.https://doi.org/10.1038/s41598-025-87104-6Boron-doped diamondSeawater electrolysisBifunctional catalystBimetallic sulfideCorrosion resistance |
| spellingShingle | Mingxu Li Genjie Chu Jiyun Gao Xiaolei Ye Ming Hou Shenghui Guo Yunchuan Li Ziqi Zhou Li Yang Pascal Briois Electrochemical deposition of bimetallic sulfides on novel BDD electrode for bifunctional alkaline seawater electrolysis Scientific Reports Boron-doped diamond Seawater electrolysis Bifunctional catalyst Bimetallic sulfide Corrosion resistance |
| title | Electrochemical deposition of bimetallic sulfides on novel BDD electrode for bifunctional alkaline seawater electrolysis |
| title_full | Electrochemical deposition of bimetallic sulfides on novel BDD electrode for bifunctional alkaline seawater electrolysis |
| title_fullStr | Electrochemical deposition of bimetallic sulfides on novel BDD electrode for bifunctional alkaline seawater electrolysis |
| title_full_unstemmed | Electrochemical deposition of bimetallic sulfides on novel BDD electrode for bifunctional alkaline seawater electrolysis |
| title_short | Electrochemical deposition of bimetallic sulfides on novel BDD electrode for bifunctional alkaline seawater electrolysis |
| title_sort | electrochemical deposition of bimetallic sulfides on novel bdd electrode for bifunctional alkaline seawater electrolysis |
| topic | Boron-doped diamond Seawater electrolysis Bifunctional catalyst Bimetallic sulfide Corrosion resistance |
| url | https://doi.org/10.1038/s41598-025-87104-6 |
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