Galvanostatically Deposited PtNi Thin‐Films as Electrocatalysts for the Hydrogen Evolution Reaction
Abstract The synthesis of hybrid platinum materials is fundamental to enable alkaline water electrolysis for cost‐effective H2 generation. In this work, we have used a galvanostatic method to co‐deposit PtNi films onto polycrystalline gold. The surface concentrations of Ni (ΓNi) and Pt (ΓPt) were ca...
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| Format: | Article |
| Language: | English |
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Wiley-VCH
2022-02-01
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| Series: | ChemistryOpen |
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| Online Access: | https://doi.org/10.1002/open.202100241 |
| _version_ | 1818979632389554176 |
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| author | Alejandra Medrano‐Banda Dr. Alfonso Crespo‐Yapur Dr. Miguel Ángel Velasco‐Soto Dr. Marcelo Videa |
| author_facet | Alejandra Medrano‐Banda Dr. Alfonso Crespo‐Yapur Dr. Miguel Ángel Velasco‐Soto Dr. Marcelo Videa |
| author_sort | Alejandra Medrano‐Banda |
| collection | DOAJ |
| description | Abstract The synthesis of hybrid platinum materials is fundamental to enable alkaline water electrolysis for cost‐effective H2 generation. In this work, we have used a galvanostatic method to co‐deposit PtNi films onto polycrystalline gold. The surface concentrations of Ni (ΓNi) and Pt (ΓPt) were calculated from electrochemical measurements; the ΓPt/ΓNi ratio and electrocatalytic activity of these materials towards hydrogen evolution reaction (HER) in 1 M KOH show a strong dependence on the current density pulse applied during the electrodeposition. Analysis of the Tafel parameters hints that, on these deposits, HER proceeds through a Volmer‐Heyrovsky mechanism. The galvanostatically deposited PtNi layers present a high current output per Pt gram, 3199 A gPt−1, which is significantly larger compared to other PtNi‐based materials obtained by more extended and more complex synthesis methods. |
| first_indexed | 2024-12-20T17:02:37Z |
| format | Article |
| id | doaj.art-1625703bb9784da9bcc372779cd96b6a |
| institution | Directory Open Access Journal |
| issn | 2191-1363 |
| language | English |
| last_indexed | 2024-12-20T17:02:37Z |
| publishDate | 2022-02-01 |
| publisher | Wiley-VCH |
| record_format | Article |
| series | ChemistryOpen |
| spelling | doaj.art-1625703bb9784da9bcc372779cd96b6a2022-12-21T19:32:28ZengWiley-VCHChemistryOpen2191-13632022-02-01112n/an/a10.1002/open.202100241Galvanostatically Deposited PtNi Thin‐Films as Electrocatalysts for the Hydrogen Evolution ReactionAlejandra Medrano‐Banda0Dr. Alfonso Crespo‐Yapur1Dr. Miguel Ángel Velasco‐Soto2Dr. Marcelo Videa3School of Engineering and Sciences Tecnologico de Monterrey Av. E. Garza Sada 2501 Sur Monterrey N.L. c.p. 64849 MéxicoSchool of Engineering and Sciences Tecnologico de Monterrey Av. E. Garza Sada 2501 Sur Monterrey N.L. c.p. 64849 MéxicoSchool of Engineering and Sciences Tecnologico de Monterrey Av. E. Garza Sada 2501 Sur Monterrey N.L. c.p. 64849 MéxicoSchool of Engineering and Sciences Tecnologico de Monterrey Av. E. Garza Sada 2501 Sur Monterrey N.L. c.p. 64849 MéxicoAbstract The synthesis of hybrid platinum materials is fundamental to enable alkaline water electrolysis for cost‐effective H2 generation. In this work, we have used a galvanostatic method to co‐deposit PtNi films onto polycrystalline gold. The surface concentrations of Ni (ΓNi) and Pt (ΓPt) were calculated from electrochemical measurements; the ΓPt/ΓNi ratio and electrocatalytic activity of these materials towards hydrogen evolution reaction (HER) in 1 M KOH show a strong dependence on the current density pulse applied during the electrodeposition. Analysis of the Tafel parameters hints that, on these deposits, HER proceeds through a Volmer‐Heyrovsky mechanism. The galvanostatically deposited PtNi layers present a high current output per Pt gram, 3199 A gPt−1, which is significantly larger compared to other PtNi‐based materials obtained by more extended and more complex synthesis methods.https://doi.org/10.1002/open.202100241alkaline hydrogen evolution reactionelectrocatalysisgalvanostatic electrodepositionplatinum-nickelwater electrolysis |
| spellingShingle | Alejandra Medrano‐Banda Dr. Alfonso Crespo‐Yapur Dr. Miguel Ángel Velasco‐Soto Dr. Marcelo Videa Galvanostatically Deposited PtNi Thin‐Films as Electrocatalysts for the Hydrogen Evolution Reaction ChemistryOpen alkaline hydrogen evolution reaction electrocatalysis galvanostatic electrodeposition platinum-nickel water electrolysis |
| title | Galvanostatically Deposited PtNi Thin‐Films as Electrocatalysts for the Hydrogen Evolution Reaction |
| title_full | Galvanostatically Deposited PtNi Thin‐Films as Electrocatalysts for the Hydrogen Evolution Reaction |
| title_fullStr | Galvanostatically Deposited PtNi Thin‐Films as Electrocatalysts for the Hydrogen Evolution Reaction |
| title_full_unstemmed | Galvanostatically Deposited PtNi Thin‐Films as Electrocatalysts for the Hydrogen Evolution Reaction |
| title_short | Galvanostatically Deposited PtNi Thin‐Films as Electrocatalysts for the Hydrogen Evolution Reaction |
| title_sort | galvanostatically deposited ptni thin films as electrocatalysts for the hydrogen evolution reaction |
| topic | alkaline hydrogen evolution reaction electrocatalysis galvanostatic electrodeposition platinum-nickel water electrolysis |
| url | https://doi.org/10.1002/open.202100241 |
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