A5061483502- Advanced battery technologies research
- Electrocatalysts for Energy Conversion
- Fuel Cells and Related Materials
- Ionic liquids properties and applications
- Catalytic Processes in Materials Science
- Supercapacitor Materials and Fabrication
- Molecular Junctions and Nanostructures
- Advanced Battery Technologies Research
- Advanced Battery Materials and Technologies
- Conducting polymers and applications
Technical University of Munich
2020-2023
Fraunhofer Institute for Chemical Technology
2021-2022
Bromine complexing agents (BCA) in aqueous electrolytes for hydrogen bromine flow batteries are used to reduce bromine's vapour pressure, while an insoluble and liquid fused salt is formed. The properties (concentrations, composition, conductivity viscosity) of this investigated study systematically ex situ by using 7 BCAs at different state charge HBr/Br2 /H2 O with a theoretical capacity 179.6 Ah L-1 . stored the concentrations up 13.6 M, reaching volumetrical capacities 730 salts....
Bromine complexing agents (BCAs) are used to reduce the vapor pressure of bromine in aqueous electrolytes flow batteries. BCAs bind hazardous, volatile by forming a second, heavy liquid fused salt. The properties strongly acidic electrolyte largely unexplored. A total 38 different quaternary ammonium halides investigated ex situ regarding their and applicability as BCAs. focus is on development safe performant HBr/Br2/H2O with theoretical capacity 180 Ah L−1 for hydrogen redox batteries...
Platinum-yttrium alloys (Pt x Y) are suggested to have superior oxygen reduction reaction (ORR) activity and long-term stability in proton exchange membrane fuel cells (PEMFCs). However, the actual ORR of a Pt Y catalyst with high electrochemically active surface area ( ECSA ) PEMFC remains uncertain. Here, Ketjen black (KB) carbon supported Y/KB (∼60 m 2 /g) was synthesized using nitride precursor. Based on elemental analysis, XRD, electron microscopy, mass-balance based model, it shown...
Abstract Electrochemical deposition is a viable approach to develop novel catalyst structures, such as Pt thin films on conductive support materials. Most studies, reaching out control electrochemical of monolayer quantities focus noble metal substrates (e.g., Au). In contrast, oxides, antimony doped tin oxide (ATO), are considered material for different applications, e.g., fuel cell catalysts. Herein, we investigate the process Sn, used model system non-noble supports. Doing so, shade some...
Graphite felt (GF) electrodes of vanadium redox flow batteries show enhanced performance when thermally treated before their assembly. Thermal treatment works by simultaneously increasing electrode wettability, kinetic activity, and total surface area (TSA). This study examines these determining yet inseparable effects, especially considering the electrodes’ long-term operation. We exposed GF to 5 min plasma treatment, ensuring equal them in air at 400 °C for different durations. then linked...
A hydrogen gas promoted approach to achieve copper underpotential deposition (UPD) on platinum surfaces was developed form a monolayer polycrystalline and carbon supported catalysts (Pt/C) in Cu 2+ -containing electrolyte, serving as alternative the commonly used electrochemical methods that require external potential control. Initially, amount of deposited presence dissolved determined via fast stripping voltammetry. Subsequently, by monitoring open circuit drop Pt disk Pt/C thin-film...