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dc.contributor.authorXu, Min
dc.contributor.authorLiu, Chencheng
dc.contributor.authorNaden, Aaron Benjamin
dc.contributor.authorFruchtl, Herbert
dc.contributor.authorBuehl, Michael
dc.contributor.authorIrvine, John Thomas Sirr
dc.identifier.citationXu , M , Liu , C , Naden , A B , Fruchtl , H , Buehl , M & Irvine , J T S 2022 , ' Electrochemical activation applied to perovskite titanate fibres to yield supported alloy nanoparticles for electrocatalytic application ' , Small , vol. Early View .
dc.identifier.otherPURE: 281757607
dc.identifier.otherPURE UUID: d687f799-1e4a-4a18-b1f5-8a5c71a376d0
dc.identifier.otherORCID: /0000-0002-8394-3359/work/123195659
dc.identifier.otherORCID: /0000-0001-6647-4266/work/123195750
dc.identifier.otherORCID: /0000-0002-1095-7143/work/123196090
dc.identifier.otherORCID: /0000-0003-2876-6991/work/123196132
dc.identifier.otherScopus: 85142078104
dc.identifier.otherWOS: 000882541400001
dc.descriptionFunding: UK Engineering and Physical Sciences Research Council (Grant Number(s): EP/R023522/1, EP/R023751/1, EP/L017008/1).en
dc.description.abstractActive bi-metallic nanoparticles are of key importance in catalysis and renewable energy. Here, the in situ formation of bi-metallic nanoparticles is investigated by exsolution on 200 nm diameter perovskite fibers. The B-site co-doped perovskite fibers display a high degree of exsolution, decorated with NiCo or Ni3Fe bi-metallic nanoparticles with average diameter about 29 and 35 nm, respectively. The perovskite fibers are utilized as cathode materials in pure CO2 electrolysis cells due to their redox stability in the CO/CO2 atmosphere. After in situ electrochemical switching, the nanoparticles exsolved from the perovskite fiber demonstrate an enhanced performance in pure CO2 electrolysis. At 900 °C, the current density of solid oxide electrolysis cell (SOEC) with 200 µm YSZ electrolyte supported NiFe doped perovskite fiber anode reaches 0.75 Acm−2 at 1.6 V superior to the NiCo doped perovskite fiber anode (about 1.5 times) in pure CO2. According to DFT calculations (PBE-D3 level) the superior CO2 conversion on NiFe compared to NiCo bi-metallic species is related to an enhanced driving force for C-O cleavage under formation of CO chemisorbed on the nanoparticle and a reduced binding energy of CO required to release this product.
dc.rightsCopyright © 2022 The Authors. Small published by Wiley-VCH GmbH. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.en
dc.subjectQD Chemistryen
dc.subjectTK Electrical engineering. Electronics Nuclear engineeringen
dc.subjectSDG 7 - Affordable and Clean Energyen
dc.titleElectrochemical activation applied to perovskite titanate fibres to yield supported alloy nanoparticles for electrocatalytic applicationen
dc.typeJournal articleen
dc.description.versionPublisher PDFen
dc.contributor.institutionUniversity of St Andrews. School of Chemistryen
dc.contributor.institutionUniversity of St Andrews. Centre for Energy Ethicsen
dc.contributor.institutionUniversity of St Andrews. Centre for Designer Quantum Materialsen
dc.contributor.institutionUniversity of St Andrews. EaSTCHEMen
dc.contributor.institutionUniversity of St Andrews. Institute of Behavioural and Neural Sciencesen
dc.description.statusPeer revieweden

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