From bad electrochemical practices to an environmental and waste reducing approach for the generation of active hydrogen evolving electrodes
| Autor: | Martin Steinhart, Lisa Ring, Bruno G. Pollet, Marten Huck, Mercedes Schmidt, Helmut Schäfer, Marian Chatenet, Karsten Küpper, Sofyane Abbou, Aurelia Gries |
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| Přispěvatelé: | Electrochimie Interfaciale et Procédés (EIP ), Laboratoire d'Electrochimie et de Physico-chimie des Matériaux et des Interfaces (LEPMI ), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut de Chimie du CNRS (INC)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019])-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut de Chimie du CNRS (INC)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019]) |
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Materials science
Hydrogen chemistry.chemical_element 02 engineering and technology Electrolyte 010402 general chemistry Electrochemistry Electrocatalyst 01 natural sciences 7. Clean energy water splitting Catalysis electrocatalysis Polarization (electrochemistry) Research Articles ComputingMilieux_MISCELLANEOUS 010405 organic chemistry General Medicine General Chemistry [CHIM.CATA]Chemical Sciences/Catalysis 021001 nanoscience & nanotechnology 0104 chemical sciences Anode hydrogen evolution heterogeneous catalysis chemistry Chemical engineering 13. Climate action Water splitting 0210 nano-technology Platinum Heterogeneous Catalysis | Hot Paper Research Article |
| Zdroj: | Angewandte Chemie International Edition Angewandte Chemie International Edition, Wiley-VCH Verlag, 2019, 58 (48), pp.17383-17392. ⟨10.1002/anie.201908649⟩ Angewandte Chemie (International Ed. in English) |
| ISSN: | 1433-7851 1521-3773 |
| DOI: | 10.1002/anie.201908649⟩ |
| Popis: | The electrodeposition of noble metals using corresponding dissolved metal salts represents an interesting process for the improvement of the electrocatalytic hydrogen evolution reaction (HER) properties of less active substrate materials. The fact that only a small fraction of the dissolved noble metals reaches the substrate represents a serious obstacle to this common procedure. We therefore chose a different path. It was found that the HER activity of Ni42 alloy drastically increased (η=140 mV at j=10 mA cm−2; pH 1) when a platinum counter electrode was used during polarization experiments in acid. This improvement was caused by a platinum transfer from the platinum anode to the steel cathode, a process which occurred simultaneously to the hydrogen evolution. The negligible accumulation of Pt (26 μg) in the electrolyte turns this straight‐forward transfer procedure into a highly cost‐effective, environmentally friendly, and waste reducing approach for the generation of cheap, stable and effective HER electrodes. The use of a platinum counter electrode for the evaluation of non‐Platinum group metal based electrodes can be seen as bad electrochemical practice. Herein, it was done intentionally and this strategy turned out to be a zero‐waste‐approach for the generation of highly active and stable HER electrocatalysts. |
| Databáze: | OpenAIRE |
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