Risch, Marcel

[["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","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","1266"],["dc.bibliographiccitation.issue","4"],["dc.bibliographiccitation.journal","Journal of Synchrotron Radiation"],["dc.bibliographiccitation.lastpage","1271"],["dc.bibliographiccitation.volume","26"],["dc.contributor.author","Döring, Florian"],["dc.contributor.author","Risch, Marcel"],["dc.contributor.author","Rösner, Benedikt"],["dc.contributor.author","Beye, Martin"],["dc.contributor.author","Busse, Philipp"],["dc.contributor.author","Kubiček, Katharina"],["dc.contributor.author","Glaser, Leif"],["dc.contributor.author","Miedema, Piter S."],["dc.contributor.author","Soltau, Jakob"],["dc.contributor.author","Raiser, Dirk"],["dc.contributor.author","Guzenko, Vitaliy A."],["dc.contributor.author","Szabadics, Lukas"],["dc.contributor.author","Kochanneck, Leif"],["dc.contributor.author","Baumung, Max"],["dc.contributor.author","Buck, Jens"],["dc.contributor.author","Jooss, Christian"],["dc.contributor.author","Techert, Simone"],["dc.contributor.author","David, Christian"],["dc.date.accessioned","2020-12-10T18:25:59Z"],["dc.date.available","2020-12-10T18:25:59Z"],["dc.date.issued","2019"],["dc.description.abstract","X-ray absorption spectroscopy (XAS) is a powerful element-specific technique that allows the study of structural and chemical properties of matter. Often an indirect method is used to access the X-ray absorption (XA). This work demonstrates a new XAS implementation that is based on off-axis transmission Fresnel zone plates to obtain the XA spectrum of La0.6Sr0.4MnO3 by analysis of three emission lines simultaneously at the detector, namely the O 2p-1s, Mn 3s-2p and Mn 3d-2p transitions. This scheme allows the simultaneous measurement of an integrated total fluorescence yield and the partial fluorescence yields (PFY) of the Mn 3s-2p and Mn 3d-2p transitions when scanning the Mn L-edge. In addition to this, the reduction in O fluorescence provides another measure for absorption often referred to as the inverse partial fluorescence yield (IPFY). Among these different methods to measure XA, the Mn 3s PFY and IPFY deviate the least from the true XA spectra due to the negligible influence of selection rules on the decay channel. Other advantages of this new scheme are the potential to strongly increase the efficiency and throughput compared with similar measurements using conventional gratings and to increase the signal-to-noise of the XA spectra as compared with a photodiode. The ability to record undistorted bulk XA spectra at high flux is crucial for future in situ spectroscopy experiments on complex materials."],["dc.identifier.doi","10.1107/S1600577519003898"],["dc.identifier.issn","1600-5775"],["dc.identifier.pmid","31274453"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/16305"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/75901"],["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","SFB 1073 | Topical Area C | C05 Kontrolle Elektronen-getriebener Chemie durch Interkalation"],["dc.relation.eissn","1600-5775"],["dc.relation.issn","1600-5775"],["dc.relation.orgunit","Institut für Materialphysik"],["dc.relation.workinggroup","RG Techert (Structural Dynamics in Chemical Systems)"],["dc.title","A zone-plate-based two-color spectrometer for indirect X-ray absorption spectroscopy"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.subtype","original_ja"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","27746"],["dc.bibliographiccitation.issue","49"],["dc.bibliographiccitation.journal","The Journal of Physical Chemistry C"],["dc.bibliographiccitation.lastpage","27756"],["dc.bibliographiccitation.volume","120"],["dc.contributor.author","Scholz, Julius"],["dc.contributor.author","Risch, Marcel"],["dc.contributor.author","Stoerzinger, Kelsey A."],["dc.contributor.author","Wartner, Garlef"],["dc.contributor.author","Shao-Horn, Yang"],["dc.contributor.author","Jooss, Christian"],["dc.date.accessioned","2018-11-07T10:04:30Z"],["dc.date.available","2018-11-07T10:04:30Z"],["dc.date.issued","2016"],["dc.description.abstract","Transition-metal oxides with the perovskite structure are promising catalysts to promote the kinetics of the oxygen evolution reaction (OER). To improve the activity and stability of these catalysts, a deeper understanding about the active site, the underlying reaction mechanism, and possible side reactions is necessary. We chose smooth epitaxial (100)-oriented La0.6Sr0.4.MnO3 (LSMO) films grown on Nb:SrTiO3 (STNO) as a model electrode to investigate OER activity and stability using the rotating ring disk electrode (RRDE) method. Careful electrochemical characterization of various films in the thickness range between 10 and 200 nm yields an OER activity of the epitaxial LSMO surface of 100 mu A/cm(ox)(2) at 1.65 V vs RHE, which is among the highest reported for LSMO and close to (110)-oriented IrO2. Detailed post-mortem analysis using XPS, XRD, and AFM revealed the high structural and morphological stability of LSMO after OER. The observed correlation between activity and Mn vacancies on the surface suggested Mn as the active site for the OER in (100)-oriented LSMO, in contrast to similar perovskite manganites, such as Pr1-xCaxMnO3. The observed Tafel slope of about 60 mV/dec matches the theoretical prediction for a chemical rate limiting step that follows an electrochemical pre-equilibrium, probably O-O bond formation. Our study established LSMO as an atomically flat oxide with high intrinsic activity and high stability."],["dc.identifier.doi","10.1021/acs.jpcc.6b07654"],["dc.identifier.isi","000390072100003"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/38708"],["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 | C01 Hydrid-Anordnungen für die Untersuchung photo-induzierter mehrstufiger katalytischer Prozesse"],["dc.relation.issn","1932-7447"],["dc.relation.orgunit","Institut für Materialphysik"],["dc.title","Rotating Ring-Disk Electrode Study of Oxygen Evolution at a Perovskite Surface: Correlating Activity to Manganese Concentration"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.subtype","original_ja"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","6235"],["dc.bibliographiccitation.issue","9"],["dc.bibliographiccitation.journal","ACS Catalysis"],["dc.bibliographiccitation.lastpage","6244"],["dc.bibliographiccitation.volume","7"],["dc.contributor.author","Odrobina, Jann"],["dc.contributor.author","Scholz, Julius"],["dc.contributor.author","Risch, Marcel"],["dc.contributor.author","Dechert, Sebastian"],["dc.contributor.author","Jooss, Christian"],["dc.contributor.author","Meyer, Franc"],["dc.date.accessioned","2020-11-05T14:37:46Z"],["dc.date.available","2020-11-05T14:37:46Z"],["dc.date.issued","2017"],["dc.identifier.doi","10.1021/acscatal.7b01883"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/68188"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-352"],["dc.relation","SFB 1073: Kontrolle von Energiewandlung auf atomaren Skalen"],["dc.relation","SFB 1073 | Topical Area C | C01 Hydrid-Anordnungen für die Untersuchung photo-induzierter mehrstufiger katalytischer Prozesse"],["dc.relation","SFB 1073 | Topical Area C | C05 Kontrolle Elektronen-getriebener Chemie durch Interkalation"],["dc.relation.eissn","2155-5435"],["dc.relation.issn","2155-5435"],["dc.relation.orgunit","Institut für Materialphysik"],["dc.title","Chasing the Achilles’ Heel in Hybrid Systems of Diruthenium Water Oxidation Catalysts Anchored on Indium Tin Oxide: The Stability of the Anchor"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.subtype","original_ja"],["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","7893"],["dc.bibliographiccitation.issue","14"],["dc.bibliographiccitation.journal","The Journal of Physical Chemistry C"],["dc.bibliographiccitation.lastpage","7902"],["dc.bibliographiccitation.volume","124"],["dc.contributor.author","Busse, Philipp"],["dc.contributor.author","Yin, Zhong"],["dc.contributor.author","Mierwaldt, Daniel"],["dc.contributor.author","Scholz, Julius"],["dc.contributor.author","Kressdorf, Birte"],["dc.contributor.author","Glaser, Leif"],["dc.contributor.author","Miedema, Piter S."],["dc.contributor.author","Rothkirch, André"],["dc.contributor.author","Viefhaus, Jens"],["dc.contributor.author","Jooss, Christian"],["dc.contributor.author","Techert, Simone"],["dc.contributor.author","Risch, Marcel"],["dc.date.accessioned","2020-12-10T15:22:44Z"],["dc.date.available","2020-12-10T15:22:44Z"],["dc.date.issued","2020"],["dc.identifier.doi","10.1021/acs.jpcc.0c00840"],["dc.identifier.eissn","1932-7455"],["dc.identifier.issn","1932-7447"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/73515"],["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 B | B06 Echtzeituntersuchungen der optischen Anregung in oligonuklearen Metallkomplexen mit schaltbaren Spin- und Ladungszuständen"],["dc.relation","SFB 1073 | Topical Area C | C01 Hydrid-Anordnungen für die Untersuchung photo-induzierter mehrstufiger katalytischer Prozesse"],["dc.relation","SFB 1073 | Topical Area C | C02 In situ hochauflösende Untersuchung des aktiven Zustands bei der photo- und elektrochemischen Wasserspaltung"],["dc.relation","SFB 1073 | Topical Area C | C05 Kontrolle Elektronen-getriebener Chemie durch Interkalation"],["dc.relation.orgunit","Institut für Materialphysik"],["dc.relation.workinggroup","RG Techert (Structural Dynamics in Chemical Systems)"],["dc.title","Probing the Surface of La0.6Sr0.4MnO3 in Water Vapor by In Situ Photon-In/Photon-Out Spectroscopy"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.subtype","original_ja"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","Communications Materials"],["dc.bibliographiccitation.volume","1"],["dc.contributor.author","Lole, Gaurav"],["dc.contributor.author","Roddatis, Vladimir"],["dc.contributor.author","Ross, Ulrich"],["dc.contributor.author","Risch, Marcel"],["dc.contributor.author","Meyer, Tobias"],["dc.contributor.author","Rump, Lukas"],["dc.contributor.author","Geppert, Janis"],["dc.contributor.author","Wartner, Garlef"],["dc.contributor.author","Blöchl, Peter"],["dc.contributor.author","Jooss, Christian"],["dc.date.accessioned","2021-10-15T10:20:45Z"],["dc.date.available","2021-10-15T10:20:45Z"],["dc.date.issued","2020"],["dc.description.abstract","Real time in-situ microscopy imaging of surface structure and atom dynamics of heterogeneous catalysts is an important step for understanding reaction mechanisms. Here, using in-situ environmental transmission electron microscopy (ETEM), we directly visualize surface atom dynamics at manganite perovskite catalyst surfaces for oxygen evolution reaction (OER), which are ≥20 times faster in water than in other ambients. Comparing (001) surfaces of La0.6Sr0.4MnO3 and Pr0.67Ca0.33MnO3 with similar initial manganese valence state and OER activity, but very different OER stability, allows us to distinguish between reversible surface adatom dynamics and irreversible surface defect chemical reactions. We observe enhanced reversible manganese adatom dynamics due to partial solvation in adsorbed water for the highly active and stable La0.6Sr0.4MnO3 system, suggesting that aspects of homogeneous catalysis must be included for understanding the OER mechanism in heterogeneous catalysis."],["dc.identifier.doi","10.1038/s43246-020-00070-6"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/90946"],["dc.language.iso","en"],["dc.relation","SFB 1073: Kontrolle von Energiewandlung auf atomaren Skalen"],["dc.relation","SFB 1073 | Topical Area B | B02 Photonen-getriebener Energietransfer über Grenzflächen zwischen Materialien mit starken Korrelationen"],["dc.relation","SFB 1073 | Topical Area C | C02 In situ hochauflösende Untersuchung des aktiven Zustands bei der photo- und elektrochemischen Wasserspaltung"],["dc.relation","SFB 1073 | Topical Area C | C03 Vom Elektronentransfer zur chemischen Energiespeicherung: ab-initio Untersuchungen korrelierter Prozesse"],["dc.relation.issn","2662-4443"],["dc.relation.orgunit","Institut für Materialphysik"],["dc.rights","CC BY 4.0"],["dc.title","Dynamic observation of manganese adatom mobility at perovskite oxide catalyst interfaces with water"],["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","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"]]