Köhler, Lennart

[["dc.bibliographiccitation.firstpage","364"],["dc.bibliographiccitation.issue","4"],["dc.bibliographiccitation.journal","Batteries & Supercaps"],["dc.bibliographiccitation.lastpage","372"],["dc.bibliographiccitation.volume","2"],["dc.contributor.author","Köhler, Lennart"],["dc.contributor.author","Szabadics, Lukas"],["dc.contributor.author","Jooss, Christian"],["dc.contributor.author","Risch, Marcel"],["dc.date.accessioned","2019-07-25T12:54:51Z"],["dc.date.available","2019-07-25T12:54:51Z"],["dc.date.issued","2019"],["dc.description.abstract","Active and stable bifunctional electrocatalysts are required for large‐scale deployment of rechargeable metal‐air and metal‐O2 batteries. This is hindered by the large overpotentials of the oxygen evolution reaction (OER) and oxygen reduction reaction (ORR) in alkaline media, where peroxide is an undesired side product. We study the suitability of epitaxial (001)‐oriented La0.6Sr0.4MnO3 perovskite surfaces as a bifunctional catalyst using a rotating‐ring disk electrode (RRDE) assembly and focus particularly on the selectivity of the ORR. The peroxide yield is above 50 % during ORR‐only investigations in the scan range of 0.69 to 0.99 V vs. RHE where the CV traces are reproducible. In contrast, the peroxide yield is drastically reduced during OER‐ORR cycling where a peroxide yield below 10 % is reached during the ORR in the scan range of 0.74 V to 1.74 V vs. RHE. Our study highlights the importance of the electrode history and thus clearly demonstrates that separate studies of the OER and ORR are insufficient to optimize bifunctional electrocatalysts."],["dc.identifier.doi","10.1002/batt.201800119"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/62054"],["dc.language.iso","en"],["dc.relation.issn","2566-6223"],["dc.relation.issn","2566-6223"],["dc.relation.orgunit","Institut für Materialphysik"],["dc.title","Peroxide Yield of the (001) La0.6Sr0.4MnO3 Surface as a Bifunctional Electrocatalyst for the Oxygen Reduction Reaction and Oxygen Evolution Reaction in Alkaline Media"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.subtype","original_ja"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","4224"],["dc.bibliographiccitation.issue","22"],["dc.bibliographiccitation.journal","ChemSusChem"],["dc.bibliographiccitation.lastpage","4224"],["dc.bibliographiccitation.volume","10"],["dc.contributor.author","Köhler, Lennart"],["dc.contributor.author","Ebrahimizadeh Abrishami, Majid"],["dc.contributor.author","Roddatis, Vladimir"],["dc.contributor.author","Geppert, Janis"],["dc.contributor.author","Risch, Marcel"],["dc.date.accessioned","2021-12-08T12:30:28Z"],["dc.date.available","2021-12-08T12:30:28Z"],["dc.date.issued","2017"],["dc.identifier.doi","10.1002/cssc.201701810"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/96447"],["dc.language.iso","en"],["dc.notes.intern","DOI-Import GROB-476"],["dc.relation.issn","1864-5631"],["dc.rights.uri","http://doi.wiley.com/10.1002/tdm_license_1.1"],["dc.title","Cover Feature: Mechanistic Parameters of Electrocatalytic Water Oxidation on LiMn 2 O 4 in Comparison to Natural Photosynthesis (ChemSusChem 22/2017)"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","1800668"],["dc.bibliographiccitation.issue","7"],["dc.bibliographiccitation.journal","physica status solidi (b)"],["dc.bibliographiccitation.volume","256"],["dc.contributor.author","Ziegler, Fabian"],["dc.contributor.author","Köhler, Lennart"],["dc.contributor.author","Gibhardt, Holger"],["dc.contributor.author","Gesing, Thorsten M."],["dc.contributor.author","Murshed, Mangir M."],["dc.contributor.author","Sobolev, Oleg"],["dc.contributor.author","Piovano, Andrea"],["dc.contributor.author","Eckold, Götz"],["dc.date.accessioned","2020-12-10T14:07:06Z"],["dc.date.available","2020-12-10T14:07:06Z"],["dc.date.issued","2019"],["dc.identifier.doi","10.1002/pssb.v256.7"],["dc.identifier.eissn","1521-3951"],["dc.identifier.issn","0370-1972"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/70126"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-354"],["dc.title","Characterization of Multiferroic Bi 2 Mn 4 O 10 by Dielectric and Neutron Spectroscopy"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]