Ni(OH)2-free NiCu as a hydrogen evolution and oxidation electrocatalyst
In this manuscript, we investigate the role of the nickel surface oxidation and the use of additional reducing agent in the synthesis process in the electrochemical activity of NiCu electrocatalysts for hydrogen oxidation reaction and hydrogen evolution reaction. In addition, the role of the carbon...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2021-04-01
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| Series: | Electrochemistry Communications |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S1388248121000837 |
| _version_ | 1818668860105031680 |
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| author | Morteza Rezaei Talarposhti Tristan Asset Aaron J. Roy Kateryna Artyushkova Lok-kun Tsui Fernando H. Garzon Alexey Serov Plamen Atanassov |
| author_facet | Morteza Rezaei Talarposhti Tristan Asset Aaron J. Roy Kateryna Artyushkova Lok-kun Tsui Fernando H. Garzon Alexey Serov Plamen Atanassov |
| author_sort | Morteza Rezaei Talarposhti |
| collection | DOAJ |
| description | In this manuscript, we investigate the role of the nickel surface oxidation and the use of additional reducing agent in the synthesis process in the electrochemical activity of NiCu electrocatalysts for hydrogen oxidation reaction and hydrogen evolution reaction. In addition, the role of the carbon support morphology is also investigated: two different supports, DENKA black and Ketjenblack with widely different properties (specific surface, proportion of low strain carbons, etc.) are studied, and no difference are observed in their electrochemical activity. However, the use 4-aminoantipyrine as a reducing agent resulted in a dramatic increase in non-oxidized Ni at the electrocatalyst’ surface, concomitant to a large increase in its activity for both the hydrogen evolution and oxidation. |
| first_indexed | 2024-12-17T06:43:01Z |
| format | Article |
| id | doaj.art-dce6e230c4b14c678d3273172bea3acd |
| institution | Directory Open Access Journal |
| issn | 1388-2481 |
| language | English |
| last_indexed | 2024-12-17T06:43:01Z |
| publishDate | 2021-04-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Electrochemistry Communications |
| spelling | doaj.art-dce6e230c4b14c678d3273172bea3acd2022-12-21T21:59:49ZengElsevierElectrochemistry Communications1388-24812021-04-01125106999Ni(OH)2-free NiCu as a hydrogen evolution and oxidation electrocatalystMorteza Rezaei Talarposhti0Tristan Asset1Aaron J. Roy2Kateryna Artyushkova3Lok-kun Tsui4Fernando H. Garzon5Alexey Serov6Plamen Atanassov7Department of Chemical & Biomolecular Engineering, National Fuel Cell Research Center (NFCRC), University of California, Irvine, CA 92697, USADepartment of Chemical & Biomolecular Engineering, National Fuel Cell Research Center (NFCRC), University of California, Irvine, CA 92697, USACenter for Micro-Engineered Materials (CMEM) and Department of Chemical and Biological Engineering, University of New Mexico, Albuquerque, NM 87106, USACenter for Micro-Engineered Materials (CMEM) and Department of Chemical and Biological Engineering, University of New Mexico, Albuquerque, NM 87106, USACenter for Micro-Engineered Materials (CMEM) and Department of Chemical and Biological Engineering, University of New Mexico, Albuquerque, NM 87106, USACenter for Micro-Engineered Materials (CMEM) and Department of Chemical and Biological Engineering, University of New Mexico, Albuquerque, NM 87106, USACenter for Micro-Engineered Materials (CMEM) and Department of Chemical and Biological Engineering, University of New Mexico, Albuquerque, NM 87106, USADepartment of Chemical & Biomolecular Engineering, National Fuel Cell Research Center (NFCRC), University of California, Irvine, CA 92697, USA; Corresponding author.In this manuscript, we investigate the role of the nickel surface oxidation and the use of additional reducing agent in the synthesis process in the electrochemical activity of NiCu electrocatalysts for hydrogen oxidation reaction and hydrogen evolution reaction. In addition, the role of the carbon support morphology is also investigated: two different supports, DENKA black and Ketjenblack with widely different properties (specific surface, proportion of low strain carbons, etc.) are studied, and no difference are observed in their electrochemical activity. However, the use 4-aminoantipyrine as a reducing agent resulted in a dramatic increase in non-oxidized Ni at the electrocatalyst’ surface, concomitant to a large increase in its activity for both the hydrogen evolution and oxidation.http://www.sciencedirect.com/science/article/pii/S1388248121000837Ni-Cu catalystsNon-platinum electrocatalystsCarbon-supported catalystsHOR/HER |
| spellingShingle | Morteza Rezaei Talarposhti Tristan Asset Aaron J. Roy Kateryna Artyushkova Lok-kun Tsui Fernando H. Garzon Alexey Serov Plamen Atanassov Ni(OH)2-free NiCu as a hydrogen evolution and oxidation electrocatalyst Electrochemistry Communications Ni-Cu catalysts Non-platinum electrocatalysts Carbon-supported catalysts HOR/HER |
| title | Ni(OH)2-free NiCu as a hydrogen evolution and oxidation electrocatalyst |
| title_full | Ni(OH)2-free NiCu as a hydrogen evolution and oxidation electrocatalyst |
| title_fullStr | Ni(OH)2-free NiCu as a hydrogen evolution and oxidation electrocatalyst |
| title_full_unstemmed | Ni(OH)2-free NiCu as a hydrogen evolution and oxidation electrocatalyst |
| title_short | Ni(OH)2-free NiCu as a hydrogen evolution and oxidation electrocatalyst |
| title_sort | ni oh 2 free nicu as a hydrogen evolution and oxidation electrocatalyst |
| topic | Ni-Cu catalysts Non-platinum electrocatalysts Carbon-supported catalysts HOR/HER |
| url | http://www.sciencedirect.com/science/article/pii/S1388248121000837 |
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