Risch, Marcel

[["dc.bibliographiccitation.firstpage","1700109"],["dc.bibliographiccitation.issue","12"],["dc.bibliographiccitation.journal","Advanced sustainable systems"],["dc.bibliographiccitation.volume","1"],["dc.contributor.author","Mierwaldt, Daniel"],["dc.contributor.author","Roddatis, Vladimir"],["dc.contributor.author","Risch, Marcel"],["dc.contributor.author","Scholz, Julius"],["dc.contributor.author","Geppert, Janis"],["dc.contributor.author","Abrishami, Majid Ebrahimizadeh"],["dc.contributor.author","Jooss, Christian"],["dc.date.accessioned","2020-12-10T14:06:44Z"],["dc.date.available","2020-12-10T14:06:44Z"],["dc.date.issued","2017"],["dc.identifier.doi","10.1002/adsu.201700109"],["dc.identifier.issn","2366-7486"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/70006"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-354"],["dc.relation","SFB 1073: Kontrolle von Energiewandlung auf atomaren Skalen"],["dc.relation","SFB 1073 | Topical Area C | C02 In situ hochauflösende Untersuchung des aktiven Zustands bei der photo- und elektrochemischen Wasserspaltung"],["dc.relation.orgunit","Institut für Materialphysik"],["dc.rights","CC BY-NC 4.0"],["dc.title","Environmental TEM Investigation of Electrochemical Stability of Perovskite and Ruddlesden-Popper Type Manganite Oxygen Evolution Catalysts"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.subtype","original_ja"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","4479"],["dc.bibliographiccitation.issue","22"],["dc.bibliographiccitation.journal","ChemSusChem"],["dc.bibliographiccitation.lastpage","4490"],["dc.bibliographiccitation.volume","10"],["dc.contributor.author","Köhler, Lennart"],["dc.contributor.author","Abrishami, Majid Ebrahimizadeh"],["dc.contributor.author","Roddatis, Vladimir"],["dc.contributor.author","Geppert, Janis"],["dc.contributor.author","Risch, Marcel"],["dc.date.accessioned","2018-10-17T06:32:18Z"],["dc.date.available","2018-10-17T06:32:18Z"],["dc.date.issued","2017"],["dc.description.abstract","Targeted improvement of the low efficiency of water oxidation during the oxygen evolution reaction (OER) is severely hindered by insufficient knowledge of the electrocatalytic mechanism on heterogeneous surfaces. We chose LiMn2 O4 as a model system for mechanistic investigations as it shares the cubane structure with the active site of photosystem II and the valence of Mn3.5+ with the dark-stable S1 state in the mechanism of natural photosynthesis. The investigated LiMn2 O4 nanoparticles are electrochemically stable in NaOH electrolytes and show respectable activity in any of the main metrics. At low overpotential, the key mechanistic parameters of Tafel slope, Nernst slope, and reaction order have constant values on the RHE scale of 62(1) mV dec-1 , 1(1) mV pH-1 , -0.04(2), respectively. These values are interpreted in the context of the well-studied mechanism of natural photosynthesis. The uncovered difference in the reaction sequence is important for the design of efficient bio-inspired electrocatalysts."],["dc.identifier.doi","10.1002/cssc.201701582"],["dc.identifier.pmid","28921902"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/14992"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/16065"],["dc.language.iso","en"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","final"],["dc.relation","SFB 1073: Kontrolle von Energiewandlung auf atomaren Skalen"],["dc.relation","SFB 1073 | Topical Area C | C05 Kontrolle Elektronen-getriebener Chemie durch Interkalation"],["dc.relation","SFB 1073 | Topical Area Z | Z02 Hochauflösende Charakterisierung von Grenzflächen"],["dc.relation.eissn","1864-564X"],["dc.relation.orgunit","Fakultät für Physik"],["dc.relation.orgunit","Institut für Materialphysik"],["dc.rights","CC BY-NC 4.0"],["dc.rights.uri","http://creativecommons.org/licenses/by-nc/4.0"],["dc.title","Mechanistic Parameters of Electrocatalytic Water Oxidation on LiMn2 O4 in Comparison to Natural Photosynthesis"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.subtype","original_ja"],["dc.type.version","published_version"],["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.artnumber","921"],["dc.bibliographiccitation.issue","11"],["dc.bibliographiccitation.journal","Materials"],["dc.bibliographiccitation.volume","9"],["dc.contributor.author","Abrishami, Majid Ebrahimizadeh"],["dc.contributor.author","Risch, Marcel"],["dc.contributor.author","Scholz, Julius"],["dc.contributor.author","Roddatis, Vladimir"],["dc.contributor.author","Osterthun, Norbert"],["dc.contributor.author","Jooss, Christian"],["dc.date.accessioned","2018-11-07T10:06:08Z"],["dc.date.available","2018-11-07T10:06:08Z"],["dc.date.issued","2016"],["dc.description.abstract","An improved understanding of the correlation between the electronic properties of Mn-O bonds, activity and stability of electro-catalysts for the oxygen evolution reaction (OER) is of great importance for an improved catalyst design. Here, an in-depth study of the relation between lattice structure, electronic properties and catalyst performance of the perovskite Ca1-xPrxMnO3 and the first-order RP-system Ca2-xPrxMnO4 at doping levels of x = 0, 0.25 and 0.5 is presented. Lattice structure is determined by X-ray powder diffraction and Rietveld refinement. X-ray absorption spectroscopy of Mn-L and O-K edges gives access to Mn valence and covalency of the Mn-O bond. Oxygen evolution activity and stability is measured by rotating ring disc electrode studies. We demonstrate that the highest activity and stability coincidences for systems with a Mn-valence state of +3.7, though also requiring that the covalency of the Mn-O bond has a relative minimum. This observation points to an oxygen evolution mechanism with high redox activity of Mn. Covalency should be large enough for facile electron transfer from adsorbed oxygen species to the MnO6 network; however, it should not be hampered by oxidation of the lattice oxygen, which might cause a crossover to material degradation. Since valence and covalency changes are not entirely independent, the introduction of the energy position of the e(g)(up arrow) pre-edge peak in the O-K spectra as a new descriptor for oxygen evolution is suggested, leading to a volcano-like representation of the OER activity."],["dc.identifier.doi","10.3390/ma9110921"],["dc.identifier.isi","000390114400007"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/14105"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/39033"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.relation","SFB 1073: Kontrolle von Energiewandlung auf atomaren Skalen"],["dc.relation","SFB 1073 | Topical Area C | C02 In situ hochauflösende Untersuchung des aktiven Zustands bei der photo- und elektrochemischen Wasserspaltung"],["dc.relation.issn","1996-1944"],["dc.relation.orgunit","Fakultät für Physik"],["dc.relation.orgunit","Institut für Materialphysik"],["dc.rights","CC BY 4.0"],["dc.title","Oxygen Evolution at Manganite Perovskite Ruddlesden-Popper Type Particles: Trends of Activity on Structure, Valence and Covalence"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.subtype","original_ja"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","139"],["dc.bibliographiccitation.issue","5"],["dc.bibliographiccitation.journal","Catalysts"],["dc.bibliographiccitation.volume","7"],["dc.contributor.author","Scholz, Julius"],["dc.contributor.author","Risch, Marcel"],["dc.contributor.author","Wartner, Garlef"],["dc.contributor.author","Luderer, Christoph"],["dc.contributor.author","Roddatis, Vladimir"],["dc.contributor.author","Jooss, Christian"],["dc.date.accessioned","2019-07-09T11:43:42Z"],["dc.date.available","2019-07-09T11:43:42Z"],["dc.date.issued","2017"],["dc.identifier.doi","10.3390/catal7050139"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/14658"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/58956"],["dc.notes.intern","Merged from goescholar"],["dc.relation.orgunit","Fakultät für Physik"],["dc.relation.orgunit","Institut für Materialphysik"],["dc.rights","CC BY 4.0"],["dc.title","Tailoring the Oxygen Evolution Activity and Stability Using Defect Chemistry"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.subtype","original_ja"],["dspace.entity.type","Publication"]]