Effect of Co/Ni ratio on electrocatalytic oxygen evaluation reaction of hydrothermally derived CoNi2S4 in alkaline medium
Bimetallic sulfide materials are considered as suitable candidates for improving the oxygen evaluation reaction (OER) performance. Here, CoNi2S4 materials are developed by an effective hydrothermal approach and employing anhydrous Na2S.xH2O as sulfur precursor. Altering the molar concentrations of C...
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| Format: | Article |
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Elsevier
2023-11-01
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| Series: | Catalysis Communications |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S156673672300198X |
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| author | Sumathi Natarajan Velu Duraisamy Meyvel Subramani Sakkarapalayam Murugesan Senthil Kumar Sathya Ponnusamy |
| author_facet | Sumathi Natarajan Velu Duraisamy Meyvel Subramani Sakkarapalayam Murugesan Senthil Kumar Sathya Ponnusamy |
| author_sort | Sumathi Natarajan |
| collection | DOAJ |
| description | Bimetallic sulfide materials are considered as suitable candidates for improving the oxygen evaluation reaction (OER) performance. Here, CoNi2S4 materials are developed by an effective hydrothermal approach and employing anhydrous Na2S.xH2O as sulfur precursor. Altering the molar concentrations of Co and Ni precursors affects the morphologies, Co, Ni contents, Co3+ and Ni3+ centers. CoNi2S4–1 with lower concentrations possesses higher Co3+, Ni3+ and Co3+/Co2+ ratios boosting the OER performance. In addition, CoNi2S4–1 demonstrates a potential of 1.60 V vs. RHE to generate a 10 mA cm−2 with a lower Tafel slope, better mass activity and stability in an alkaline solution. |
| first_indexed | 2024-03-09T14:25:56Z |
| format | Article |
| id | doaj.art-8f7dc42da71346e0af82855656454e9b |
| institution | Directory Open Access Journal |
| issn | 1873-3905 |
| language | English |
| last_indexed | 2024-03-09T14:25:56Z |
| publishDate | 2023-11-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Catalysis Communications |
| spelling | doaj.art-8f7dc42da71346e0af82855656454e9b2023-11-28T07:25:32ZengElsevierCatalysis Communications1873-39052023-11-01184106796Effect of Co/Ni ratio on electrocatalytic oxygen evaluation reaction of hydrothermally derived CoNi2S4 in alkaline mediumSumathi Natarajan0Velu Duraisamy1Meyvel Subramani2Sakkarapalayam Murugesan Senthil Kumar3Sathya Ponnusamy4Department of Physics, Chikkaiah Naicker College, Erode 638 004, Tamil Nadu, IndiaElectro-Organic and Materials Electrochemistry (EME) Division, CSIR-Central Electrochemical Research Institute (CECRI), Karaikudi 630 003, Tamil Nadu, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201 002, IndiaDepartment of Physics, Chikkaiah Naicker College, Erode 638 004, Tamil Nadu, India; Corresponding author.Electro-Organic and Materials Electrochemistry (EME) Division, CSIR-Central Electrochemical Research Institute (CECRI), Karaikudi 630 003, Tamil Nadu, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201 002, IndiaDepartment of Physics, Salem Sowdeswari College, Salem 636 010, Tamil Nadu, IndiaBimetallic sulfide materials are considered as suitable candidates for improving the oxygen evaluation reaction (OER) performance. Here, CoNi2S4 materials are developed by an effective hydrothermal approach and employing anhydrous Na2S.xH2O as sulfur precursor. Altering the molar concentrations of Co and Ni precursors affects the morphologies, Co, Ni contents, Co3+ and Ni3+ centers. CoNi2S4–1 with lower concentrations possesses higher Co3+, Ni3+ and Co3+/Co2+ ratios boosting the OER performance. In addition, CoNi2S4–1 demonstrates a potential of 1.60 V vs. RHE to generate a 10 mA cm−2 with a lower Tafel slope, better mass activity and stability in an alkaline solution.http://www.sciencedirect.com/science/article/pii/S156673672300198XBimetallic sulfideOxygen evolution reactionHydrothermal methodHigh Co3+/Co2+ ratioCoNi2S4 electrocatalyst |
| spellingShingle | Sumathi Natarajan Velu Duraisamy Meyvel Subramani Sakkarapalayam Murugesan Senthil Kumar Sathya Ponnusamy Effect of Co/Ni ratio on electrocatalytic oxygen evaluation reaction of hydrothermally derived CoNi2S4 in alkaline medium Catalysis Communications Bimetallic sulfide Oxygen evolution reaction Hydrothermal method High Co3+/Co2+ ratio CoNi2S4 electrocatalyst |
| title | Effect of Co/Ni ratio on electrocatalytic oxygen evaluation reaction of hydrothermally derived CoNi2S4 in alkaline medium |
| title_full | Effect of Co/Ni ratio on electrocatalytic oxygen evaluation reaction of hydrothermally derived CoNi2S4 in alkaline medium |
| title_fullStr | Effect of Co/Ni ratio on electrocatalytic oxygen evaluation reaction of hydrothermally derived CoNi2S4 in alkaline medium |
| title_full_unstemmed | Effect of Co/Ni ratio on electrocatalytic oxygen evaluation reaction of hydrothermally derived CoNi2S4 in alkaline medium |
| title_short | Effect of Co/Ni ratio on electrocatalytic oxygen evaluation reaction of hydrothermally derived CoNi2S4 in alkaline medium |
| title_sort | effect of co ni ratio on electrocatalytic oxygen evaluation reaction of hydrothermally derived coni2s4 in alkaline medium |
| topic | Bimetallic sulfide Oxygen evolution reaction Hydrothermal method High Co3+/Co2+ ratio CoNi2S4 electrocatalyst |
| url | http://www.sciencedirect.com/science/article/pii/S156673672300198X |
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