dc.contributor.author | Cossar, Emily | |
dc.contributor.author | Barnett, Alejandro Oyarce | |
dc.contributor.author | Seland, Frode | |
dc.contributor.author | Baranova, Elena | |
dc.date.accessioned | 2019-12-27T08:20:43Z | |
dc.date.available | 2019-12-27T08:20:43Z | |
dc.date.created | 2019-12-18T14:45:40Z | |
dc.date.issued | 2019 | |
dc.identifier.citation | Catalysts. 2019, 9 (10) | nb_NO |
dc.identifier.issn | 2073-4344 | |
dc.identifier.uri | http://hdl.handle.net/11250/2634421 | |
dc.description.abstract | Anion exchange membrane water electrolysis (AEMWE) is an efficient, cost-effective solution to renewable energy storage. The process includes oxygen and hydrogen evolution reactions (OER and HER); the OER is kinetically unfavourable. Studies have shown that nickel (Ni)- iron (Fe) catalysts enhance activity towards OER, and cerium oxide (CeO2) supports have shown positive effects on catalytic performance. This study covers the preliminary evaluation of Ni, Ni90Fe10 (at%) and Ni90Fe10/CeO2 (50 wt%) nanoparticles (NPs), synthesized by chemical reduction, as OER catalysts in AEMWE using commercial membranes. Transmission electron microscopy (TEM) images of the Ni-based NPs indicate NPs roughly 4–6 nm in size. Three-electrode cell measurements indicate that Ni90Fe10 is the most active non-noble metal catalyst in 1 and 0.1 M KOH. AEMWE measurements of the anodes show cells achieving overall cell voltages between 1.85 and 1.90 V at 2 A cm−2 in 1 M KOH at 50 °C, which is comparable to the selected iridium-black reference catalyst. In 0.1 M KOH, the AEMWE cell containing Ni90Fe10 attained the lowest voltage of 1.99 V at 2 A cm−2. Electrochemical impedance spectroscopy (EIS) of the AEMWE cells using Ni90Fe10/CeO2 showed a higher ohmic resistance than all catalysts, indicating the need for support optimization. | nb_NO |
dc.language.iso | eng | nb_NO |
dc.publisher | MDPI | nb_NO |
dc.rights | Navngivelse 4.0 Internasjonal | * |
dc.rights.uri | http://creativecommons.org/licenses/by/4.0/deed.no | * |
dc.title | The performance of nickel and nickel-iron catalysts evaluated as anodes in anion exchange membrane water electrolysis | nb_NO |
dc.type | Journal article | nb_NO |
dc.type | Peer reviewed | nb_NO |
dc.description.version | publishedVersion | nb_NO |
dc.source.volume | 9 | nb_NO |
dc.source.journal | Catalysts | nb_NO |
dc.source.issue | 10 | nb_NO |
dc.identifier.doi | 10.3390/catal9100814 | |
dc.identifier.cristin | 1762612 | |
dc.relation.project | Norges forskningsråd: 261620 | nb_NO |
dc.relation.project | Norges forskningsråd: 268019 | nb_NO |
dc.description.localcode | © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). | nb_NO |
cristin.unitcode | 194,64,25,0 | |
cristin.unitcode | 194,66,35,0 | |
cristin.unitname | Institutt for energi- og prosessteknikk | |
cristin.unitname | Institutt for materialteknologi | |
cristin.ispublished | true | |
cristin.fulltext | original | |
cristin.qualitycode | 1 | |