A5056773962- Electrocatalysts for Energy Conversion
- Electrochemical Analysis and Applications
- Fuel Cells and Related Materials
- Catalytic Processes in Materials Science
- Molecular Junctions and Nanostructures
- Advanced battery technologies research
- CO2 Reduction Techniques and Catalysts
- Zeolite Catalysis and Synthesis
- Surface and Thin Film Phenomena
- Catalysis and Oxidation Reactions
- Conducting polymers and applications
- Advancements in Battery Materials
- Nanoporous metals and alloys
- Advancements in Solid Oxide Fuel Cells
- Gold and Silver Nanoparticles Synthesis and Applications
- Copper-based nanomaterials and applications
- nanoparticles nucleation surface interactions
- Hybrid Renewable Energy Systems
- Supercapacitor Materials and Fabrication
- Metal and Thin Film Mechanics
- Advancements in Materials Engineering
- Quantum and electron transport phenomena
- Electrochemical sensors and biosensors
- Machine Learning in Materials Science
- Surface Chemistry and Catalysis
Zentrum für Sonnenenergie- und Wasserstoff-Forschung Baden-Württemberg
2020-2025
Hydrogen Solar (United Kingdom)
2022-2023
Universität Ulm
2011-2020
Université de Poitiers
2003-2012
Centre National de la Recherche Scientifique
2006-2007
Abstract The influence of the electrolyte pH on formic acid (HCOOH) electrooxidation is investigated both polycrystalline Pt and Au electrodes single‐crystalline in perchloric sulfuric acid‐based electrolytes. On electrodes, potentiodynamic oxidation currents are found to depend, a nonlinear way, bell‐shaped relation, with maximum catalytic activity at pK HCOOH. this feature not observed; increases steadily increasing up value approximately 5, which followed by plateau until 10, contrast...
Direct formic acid fuel cell (DFAFC) with Pd-based catalyst anode is a promising energy converter to power portable devices. However, its commercialization entangled insufficient activity and poor stability of existing catalysts. Here we initially report that DFAFC using facilely synthesized Pd–B/C ca. 6 at. % B doping as the yields maximum output density 316 mW cm–2 at 30 °C, twice same otherwise state-of-the-art Pd/C. More strikingly, constant voltage 0.3 V, former 9 times high latter...
A new and facile one-step method to prepare a smooth Pt monolayer film on metallic substrate in the absence of underpotential deposition-type stabilizations is presented as general approach applied growth films Au. The strongly modified electronic properties these were demonstrated by situ IR spectroscopy at electrified solid-liquid interface with adsorbed carbon monoxide serving probe molecule. Au kinetically stabilized CO, inhibiting further deposition higher layers.
Atomic scale structural characterization and electrochemical measurements under controlled electrolyte transport conditions are the basis for structure–activity relationships in nanostructured electrodes.
The necessity of the careful structural characterization model electrodes before and after electrochemical measurements for a proper mechanistic interpretation is demonstrated well-known electrocatalytic system, bulk CO oxidation on PtRu electrodes. Bimetallic, Pt-monolayer-island-modified Ru(0001) electrodes, which were prepared characterized by scanning tunneling microscopy under ultrahigh-vacuum conditions, found to undergo distinct restructuring when they potential cycled 1.05 VRHE ,...
Due to its low-cost and environmental friendliness, birnessite-type manganese oxide has attracted wide interest for use as a cathode material in electrochemical energy storage applications.
Abstract Aiming at a better understanding of the corrosion resistance stainless steel within frame its use for bipolar plates in proton exchange membrane fuel cell applications, model electrochemical investigations were conducted well-defined experimental conditions on 316L grade steel. Passive films grown electrochemically various potentials an aqueous electrolyte pH 3, and semi-conducting characteristics thicknesses determined via impedance spectroscopy methods. A restructuring passive...
Abstract Systematized investigations of the manufacturing process porous catalytic layers are crucial for maturation hydrogen proton exchange membrane fuel cells (H 2 -PEMFC) technology. The present study reports influence catalyst ink solvent, with 19 different compositions being investigated towards impact on characteristics (porosity) and properties + O reactants mass transport resistances) cathode layer (CCL), in dispersion Nafion ionomer H -PEMFC polarization at high current loads....
The suitability and potential of shape selected nanocrystals for in situ spectro-electrochemical particular spectro-electrocatalytic studies on structurally well defined electrodes under enforced controlled electrolyte mass transport will be demonstrated, using Pt prepared by colloidal synthesis procedures a flow cell set-up allowing simultaneous measurements the Faradaic current, FTIR spectroscopy adsorbed reaction intermediates side products an attenuated total reflection configuration...
As part of an extensive study the performance structurally well-defined AgxPt1–x/Pt(111) monolayer surface alloys in O2 electroreduction we have systematically investigated electrochemical properties and stability these electrodes 0.5 M H2SO4 under mass controlled conditions a flow cell setup, varying Ag content over wide range. The were prepared characterized on atomic scale by scanning tunneling microscopy (STM) UHV conditions, transfer system allowed measurements without intermediate...