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Stability of 3D-porous Ni/Cu cathodes under real alkaline electrolyzer operating conditions and its effect on catalytic activity
dc.contributor.author | Valero-Vidal, Carlos | |
dc.contributor.author | Herraiz Cardona, Isaac | |
dc.contributor.author | Pérez-Herranz, Valentín | |
dc.contributor.author | Igual-Muñoz, Anna | |
dc.date.accessioned | 2016-12-19T19:06:59Z | |
dc.date.available | 2016-12-19T19:06:59Z | |
dc.date.issued | 2016 | |
dc.identifier.citation | VALERO-VIDAL, Carlos, et al. Stability of 3D-porous Ni/Cu cathodes under real alkaline electrolyzer operating conditions and its effect on catalytic activity. Applied Catalysis B: Environmental, 2016, vol. 198, p. 142-153. | ca_CA |
dc.identifier.issn | 0926-3373 | |
dc.identifier.uri | http://hdl.handle.net/10234/165111 | |
dc.description.abstract | Despite the development and synthesis of new electrode materials for hydrogen generation in alkaline water electrolyzers has been a research topic widely exploited in the last years, stability tests on the obtained cathodes have been restricted to long-term potentiostatic/galvanostatic experiments which do not fulfil the real operating conditions that take place in those devices. In this work, two different Service Life Tests have been designed and implemented, aiming at including particular conditions (i.e. inverse polarity and short-circuit) in the durability and catalytic activity of cathode characterization. For this purpose, Ni/Cu bilayered porous electrodes were prepared using different Ni electrodeposition times (15, 30 and 45 min) following a double template electrochemical method. It has been confirmed that the electrode with the lowest Ni content can be considered as a promising electrocatalyst for hydrogen production under industrial conditions because of its optimal activity and stability after the two sets of testing conditions. In particular, electrochemical studies demonstrated that an inversion in polarity can positively affect the electrode performance, as a consequence of the synergetic interaction between CuO/Cu(OH)2 and β-Ni(OH)2 species formed at potentials below the oxygen evolution domain. | ca_CA |
dc.description.sponsorShip | The authors gratefully acknowledge financial support given by the Generalitat Valenciana (PROMETEO/2010/023) and Spanish Government ( Ministerio de Ciencia e Innovación ) for the postgradu- ate grants AP2007-01243 (Carlos Valero-Vidal) and AP2007-03737 (Isaac Herraiz-Cardona). | ca_CA |
dc.format.extent | 12 p. | ca_CA |
dc.format.mimetype | application/pdf | ca_CA |
dc.language.iso | eng | ca_CA |
dc.publisher | Elsevier | ca_CA |
dc.relation.isPartOf | Applied Catalysis B: Environmental, 2016, vol. 198 | ca_CA |
dc.rights | © 2016 Elsevier B.V. All rights reserved. | ca_CA |
dc.rights.uri | http://rightsstatements.org/vocab/InC/1.0/ | * |
dc.subject | Hydrogen evolution reaction (HER) | ca_CA |
dc.subject | Service life tests | ca_CA |
dc.subject | Alkaline water electrolyzers | ca_CA |
dc.subject | Ni/Cu cathodes | ca_CA |
dc.title | Stability of 3D-porous Ni/Cu cathodes under real alkaline electrolyzer operating conditions and its effect on catalytic activity | ca_CA |
dc.type | info:eu-repo/semantics/article | ca_CA |
dc.identifier.doi | http://dx.doi.org/10.1016/j.apcatb.2016.05.030 | |
dc.rights.accessRights | info:eu-repo/semantics/restrictedAccess | ca_CA |
dc.relation.publisherVersion | http://www.sciencedirect.com/science/article/pii/S0926337316303782 | ca_CA |
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