Schuppert, A. K.; Topalov, A. A.; Savan, A.; Klemm, S. O.; Ludwig, A.; Mayrhofer, K. J. J.: Fast Screening of PEMFC-Catalysts with a Scanning Flow Cell System. 63rd Annual Meeting of the International Society of Electrochemistry, Prague, Czech Republic (2012)
Katsounaros, I.; Meier, J. C.; Mayrhofer, K. J. J.: Reduction and oxidation of hydrogen peroxide on polycrystalline platinum. Electrocatalysis: Present and Future - an ELCAT Meeting, Alicante, Spain (2011)
Katsounaros, I.; Topalov, A. A.; Mayrhofer, K. J. J.: Electrochemical reduction of CO2 to fuels: Directions and perspectives. Electrochemistry 2010: From Microscopic Understanding to Global Impact, Bochum, Germany (2010)
Meier, J. C.; Hartl, K.; Nesselberger, M.; Arenz, M.; Mayrhofer, K. J. J.: The Particle Size Effect in Electrocatalysis of Fuel Cell Reactions. Electrochemistry 2010, Bochum, Germany (2010)
Meier, J. C.; Hartl, K.; Juhart, V.; Hanzlik, M.; Ashton, S.; Wiberg, G. K. H.; Arenz, M.; Mayrhofer, K. J. J.: Stability of Pt alloy high surface area catalysts. International Conference on Materials for Energy, Karlsruhe, Germany (2010)
Mayrhofer, K. J. J.: Advanced Methods in Electroanalytical Chemistry Part I. Lecture: Lecturing at Ruhr-Universität Bochum, Fakultät für Chemie und Biochemie, WS 2014/2015, Bochum, Germany, 2014-10 - 2015-03
Mayrhofer, K. J. J.: Advanced Methods in Electroanalytical Chemistry Part II. Lecture: Lecturing at Ruhr-Universität Bochum, Fakultät für Chemie und Biochemie, SS 2015, Bochum, Germany, 2015-04 - 2015-09
Mayrhofer, K. J. J.: Advanced Methods in Electroanalytical Chemistry Part I. Lecture: Lecturing at Ruhr-Universität Bochum, Fakultät für Chemie und Biochemie, WS 2013/2014, Bochum, Germany, 2013-10 - 2014-03
Mayrhofer, K. J. J.: Advanced Methods in Electroanalytical Chemistry Part II. Lecture: Lecturing at Ruhr-Universität Bochum, Fakultät für Chemie und Biochemie, SS 2014, Bochum, Germany, 2014-04 - 2014-09
Erbe, A.; Valtiner, M.; Muhler, M.; Mayrhofer, K. J. J.; Rohwerder, M.: Physical chemistry of surfaces and interfaces. Lecture: Course for PhD students of the IMPRS Surmat, Ruhr-Universität Bochum, Bochum, Germany, October 01, 2013 - October 31, 2013
Mayrhofer, K. J. J.: Advanced Methods in Electroanalytical Chemistry Part II. Lecture: Lecturing at Ruhr-Universität Bochum, Fakultät für Chemie und Biochemie, SS 2013, Bochum, Germany, 2013-04 - 2013-09
Mayrhofer, K. J. J.: Advanced Methods in Electroanalytical Chemistry Part I. Lecture: Lecturing at Ruhr-Universität Bochum, Fakultät für Chemie und Biochemie, WS 2012/2013, Bochum, Germany, 2012-10 - 2013-03
Mayrhofer, K. J. J.: Advanced Methods in Electroanalytical Chemistry Part II. Lecture: Lecturing at Ruhr-Universität Bochum, Fakultät für Chemie und Biochemie, SS 2012, Bochum, Germany, April 01, 2012 - September 30, 2012
Pizzutilo, E.: Towards On-Site Production of Hydrogen Peroxide with Gold-Palladium catalysts in Electrocatalysis and Heterogeneous Catalysis. Dissertation, Ruhr-Universität Bochum, Bochum, Germany (2017)
Polymeros, G.: Performance of catalysts in electrode structure – bridging the gap between fundamental catalyst properties and behavior in real applications. Dissertation, Ruhr-Universität Bochum, Fakultät für Maschinenbau, Bochum, Germany (2017)
We have studied a nanocrystalline AlCrCuFeNiZn high-entropy alloy synthesized by ball milling followed by hot compaction at 600°C for 15 min at 650 MPa. X-ray diffraction reveals that the mechanically alloyed powder consists of a solid-solution body-centered cubic (bcc) matrix containing 12 vol.% face-centered cubic (fcc) phase. After hot compaction, it consists of 60 vol.% bcc and 40 vol.% fcc. Composition analysis by atom probe tomography shows that the material is not a homogeneous fcc–bcc solid solution
Magnetic properties of magnetocaloric materials is of utmost importance for their functional applications. In this project, we study the magnetic properties of different materials with the final goal to discover new magnetocaloric materials more suited for practical applications.
In this project, we work on a generic solution to design advanced high-entropy alloys (HEAs) with enhanced magnetic properties. By overturning the concept of stabilizing solid solutions in HEAs, we propose to render the massive solid solutions metastable and trigger spinodal decomposition. The motivation for starting from the HEA for this approach…
This study investigates the mechanical properties of liquid-encapsulated metallic microstructures created using a localized electrodeposition method. By encapsulating liquid within the complex metal microstructures, we explore how the liquid influences compressive and vibrational characteristics, particularly under varying temperatures and strain…
In this project we pursue recent developments in the field of austenitic steels with up to 18% reduced mass density. The alloys are based on the Fe-Mn-Al-C system.
Local lattice distortion is one of the core effects in complex concentrated alloys (CCAs). It has been expected that the strength CCAs can be improved by inducing larger local lattice distortions. In collaboration with experimentalists, we demonstrated that VCoNi has larger local lattice distortions and indeed has much better strength than the…
In this project, we work on the use of a combinatorial experimental approach to design advanced multicomponent multi-functional alloys with rapid alloy prototyping. We use rapid alloy prototyping to investigate five multicomponent Invar alloys with 5 at.% addition of Al, Cr, Cu, Mn and Si to a super Invar alloy (Fe63Ni32Co5; at.%), respectively…
The aim of the current study is to investigate electrochemical corrosion mechanisms by examining the metal-liquid nanointerfaces. To achieve this, corrosive fluids will be strategically trapped within metal structures using novel additive micro fabrication techniques. Subsequently, the nanointerfaces will be analyzed using cryo-atom probe…