Janis Timoshenko
Fritz Haber Institute of the Max Planck Society
108 Papers
235 Citations
Janis Timoshenko is an academic researcher from Fritz Haber Institute of the Max Planck Society. The author has contributed to research in topics: Extended X-ray absorption fine structure & Catalysis. The author has an hindex of 25, co-authored 94 publications. Previous affiliations of Janis Timoshenko include Yeshiva University & Max Planck Society.
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Papers
Nanoporous Copper–Silver Alloys by Additive-Controlled Electrodeposition for the Selective Electroreduction of CO2 to Ethylene and Ethanol
Thao T. H. Hoang,Thao T. H. Hoang,Sumit Verma,Sumit Verma,Sichao Ma,Sichao Ma,Timothy T. Fister,Janis Timoshenko,Anatoly I. Frenkel,Paul J. A. Kenis,Paul J. A. Kenis,Andrew A. Gewirth,Andrew A. Gewirth +12 more
TL;DR: In situ Raman and electroanalysis studies suggest the origin of the high selectivity toward C2 products to be a combined effect of the enhanced stabilization of the Cu2O overlayer and the optimal availability of the CO intermediate due to the Ag incorporated in the alloy.
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Key role of chemistry versus bias in electrocatalytic oxygen evolution.
Hong Nhan Nong,Hong Nhan Nong,Lorenz J. Falling,Arno Bergmann,Malte Klingenhof,Hoang Phi Tran,Camillo Spöri,Rik Mom,Janis Timoshenko,Guido Zichittella,Axel Knop-Gericke,Axel Knop-Gericke,Simone Piccinin,Javier Pérez-Ramírez,Beatriz Roldan Cuenya,Robert Schlögl,Robert Schlögl,Peter Strasser,Detre Teschner,Detre Teschner,Travis E. Jones +20 more
TL;DR: Pulse voltammetry and operando X-ray absorption spectroscopy measurements on iridium oxide are reported to show that the applied bias affects the electrocatalytically generated current through charge accumulation in the catalyst, and it is found that the activation free energy decreases linearly with the amount of oxidative charge stored.
In Situ/Operando Electrocatalyst Characterization by X-ray Absorption Spectroscopy
TL;DR: The fundamental principles of the XAS method are discussed and the progress in the instrumentation and data analysis approaches undertaken for deciphering X-ray absorption near edge structure (XANES) and extended X- Ray absorption fine structure (EXAFS) spectra are described.
523
Efficient Electrochemical Nitrate Reduction to Ammonia with Copper Supported Rhodium Cluster and Single-Atom Catalysts.
Huimin Liu,Xiuyao Lang,Chao Zhu,Janis Timoshenko,Martina Rüscher,Lichen Bai,Néstor Guijarro,Haibo Yin,Yue Peng,Junhua Li,Zheng Liu,Wei Wang,Beatriz Roldan Cuenya,Jingshan Luo +13 more
TL;DR: In this paper , the authors demonstrate a novel electrocatalyst for NITRR consisting of Rh clusters and single-atoms dispersed onto Cu nanowires (NWs), which delivers a partial current density of 162 mA cm-2 for NH3 production and a Faradaic efficiency of 93% at -0.2 V vs. RHE.
Identification of carbon-encapsulated iron nanoparticles as active species in non-precious metal oxygen reduction catalysts.
Jason A. Varnell,Edmund C. M. Tse,Charles E. Schulz,Tim T. Fister,Richard T. Haasch,Janis Timoshenko,Anatoly I. Frenkel,Andrew A. Gewirth,Andrew A. Gewirth +8 more
TL;DR: It is revealed that protected sites adjacent to iron nanoparticles are responsible for the observed activity and stability of the catalyst, which may allow for the design and synthesis of enhanced non-precious metal oxygen reduction catalysts with a higher density of active sites.
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