Surface Oxidation of Stainless Steel: Oxygen Evolution Electrocatalysts with High Catalytic Activity

DC FieldValueLanguage
dc.contributor.authorSchaefer, Helmut
dc.contributor.authorBeladi-Mousavi, Seyyed Mohsen
dc.contributor.authorWalder, Lorenz
dc.contributor.authorWollschlaeger, Joachim
dc.contributor.authorKuschel, Olga
dc.contributor.authorIchilmann, Sachar
dc.contributor.authorSadaf, Shamaila
dc.contributor.authorSteinhart, Martin
dc.contributor.authorKuepper, Karsten
dc.contributor.authorSchneider, Lilli
dc.date.accessioned2021-12-23T16:04:43Z-
dc.date.available2021-12-23T16:04:43Z-
dc.date.issued2015
dc.identifier.issn21555435
dc.identifier.urihttps://osnascholar.ub.uni-osnabrueck.de/handle/unios/6564-
dc.description.abstractThe cheap stainless commodity steel AISI 304, which basically consists of Fe, Ni, and Cr, was surface-oxidized by exposure to Cl-2 gas. This treatment turned AISI 304 steel into an efficient electrocatalyst for water splitting at pH 7 and pH 13. The overpotential of the anodic oxygen evolution reaction (OER), which typically limits the efficiency of the overall water-splitting process, could be reduced to 260 mV at 1.5 mA/cm(2) in 0.1 M KOH. At pH 7, overpotentials of 500-550 mV at current densities of 0.65 mA/cm2 were achieved. These values represent a surprisingly good activity taking into account the simplicity of the procedure and the fact that the starting material is virtually omnipresent. Surface-oxidized AISI 304 steel exhibited outstanding long-term stability of its electro catalytic properties in the alkaline as well as in the neutral regime, which did not deteriorate even after chronopoteniometry for 150 000 s. XPS analysis revealed that surface oxidation resulted in the formation of Fe oxide and Cr oxide surface layers with a thickness in the range of a few nanometers accompanied by enrichment of Cr in the surface layer. Depending on the duration of the Cl-2 treatment, the purity of the Fe oxide/Cr oxide mixture lies between 95% and 98%. Surface oxidation of AISI 304 steel by chlorination is an easy and scalable access to nontoxic, cheap, stable, and efficient electrocatalysts for water splitting.
dc.language.isoen
dc.publisherAMER CHEMICAL SOC
dc.relation.ispartofACS CATALYSIS
dc.subjectChemistry
dc.subjectChemistry, Physical
dc.subjectCOBALT
dc.subjectFILMS
dc.subjectHYDROGEN
dc.subjectIRON ELECTRODES
dc.subjectKINETICS
dc.subjectMECHANISM
dc.subjectMETAL
dc.subjectNICKEL
dc.subjectoxygen evolution electrocatalysis
dc.subjectrenewable energy sources
dc.subjectsolar to fuel conversion
dc.subjectstainless steel
dc.subjectsurface oxidation
dc.subjectWATER
dc.subjectXPS
dc.subjectXPS spectroscopy
dc.titleSurface Oxidation of Stainless Steel: Oxygen Evolution Electrocatalysts with High Catalytic Activity
dc.typejournal article
dc.identifier.doi10.1021/acscatal.5b00221
dc.identifier.isiISI:000352464400073
dc.description.volume5
dc.description.issue4
dc.description.startpage2671
dc.description.endpage2680
dc.contributor.orcid0000-0002-5241-8498
dc.contributor.orcid0000-0001-5906-3354
dc.contributor.orcid0000-0003-2861-0348
dc.contributor.orcid0000-0002-5497-034X
dc.contributor.researcheridB-7811-2011
dc.contributor.researcheridD-7919-2011
dc.contributor.researcheridG-1397-2016
dc.contributor.researcheridAAM-6820-2020
dc.contributor.researcheridK-8708-2018
dc.publisher.place1155 16TH ST, NW, WASHINGTON, DC 20036 USA
dcterms.isPartOf.abbreviationACS Catal.
crisitem.author.deptInstitut für Chemie neuer Materialien-
crisitem.author.deptFB 04 - Physik-
crisitem.author.deptFB 04 - Physik-
crisitem.author.deptFB 04 - Physik-
crisitem.author.deptidinstitute11-
crisitem.author.deptidfb04-
crisitem.author.deptidfb04-
crisitem.author.deptidfb04-
crisitem.author.orcid0000-0002-5497-034X-
crisitem.author.orcid0000-0002-3043-3718-
crisitem.author.orcid0000-0002-5241-8498-
crisitem.author.parentorgFB 05 - Biologie/Chemie-
crisitem.author.parentorgUniversität Osnabrück-
crisitem.author.parentorgUniversität Osnabrück-
crisitem.author.parentorgUniversität Osnabrück-
crisitem.author.grandparentorgUniversität Osnabrück-
crisitem.author.netidWaLo966-
crisitem.author.netidWoJo788-
crisitem.author.netidKuOl778-
crisitem.author.netidStMa946-
crisitem.author.netidKuKa120-
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