Olga A. Krysiak
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View article: Exploration of nanostructured high-entropy alloys for key electrochemical reactions: a comparative study for the solid solution systems Cu–Pd–Pt–Ru, Ir–Pd–Pt–Ru and Ni–Pd–Pt–Ru
Exploration of nanostructured high-entropy alloys for key electrochemical reactions: a comparative study for the solid solution systems Cu–Pd–Pt–Ru, Ir–Pd–Pt–Ru and Ni–Pd–Pt–Ru Open
High-throughput experimentation was used to generate a large dataset allowing derivation of composition–activity correlations across different compositionally complex electrocatalysts and reactions.
View article: Discovery of Highly Active Noble‐Metal‐Lean Mo−Ru Electrocatalysts for Hydrogen Evolution
Discovery of Highly Active Noble‐Metal‐Lean Mo−Ru Electrocatalysts for Hydrogen Evolution Open
The discovery of high‐performance electrocatalysts for water electrolysis is highly important. We use a strategy for catalyst discovery based on high‐throughput screening of a broad range of materials compositions on a thin‐film materials …
View article: Structural and Hydrogen Evolution Electrocatalysis Properties of Cr–Al–B MAB Phase Thin Films
Structural and Hydrogen Evolution Electrocatalysis Properties of Cr–Al–B MAB Phase Thin Films Open
Thin‐film materials libraries (MLs) in the system Cr–Al–B are synthesized on 100 mm diameter Al 2 O 3 sapphire substrates by combinatorial co‐sputtering from elemental targets at substrate temperatures of 600 and 700 °C to study phase form…
View article: From Quinary Co–Cu–Mo–Pd–Re Materials Libraries to Gas Diffusion Electrodes for Alkaline Hydrogen Evolution
From Quinary Co–Cu–Mo–Pd–Re Materials Libraries to Gas Diffusion Electrodes for Alkaline Hydrogen Evolution Open
Developing a hydrogen evolution reaction (HER) electrocatalyst that can steadily drive a large current density is of great significance for industrial electrochemical water‐splitting technology. Herein, the compositionally complex noble‐me…
View article: Design‐of‐Experiments‐Based Optimisation of Vanillin Yield from Kraft Lignin Using Pulse Electrolysis and Thermolysis
Design‐of‐Experiments‐Based Optimisation of Vanillin Yield from Kraft Lignin Using Pulse Electrolysis and Thermolysis Open
The electrification of the production of fine chemicals has received increased interest in combating petrochemical routes with a high carbon footprint. Oxidising biomass from waste streams with concomitant hydrogen production, such as the …
View article: Sputter‐Deposited La–Co–Mn–O Nanocolumns as Stable Electrocatalyst for the Oxygen Evolution Reaction
Sputter‐Deposited La–Co–Mn–O Nanocolumns as Stable Electrocatalyst for the Oxygen Evolution Reaction Open
A thin‐film materials library (ML) of the La–Co–Mn–O system is fabricated by hot reactive combinatorial cosputter deposition and screened for its electrocatalytic activity for the oxygen evolution reaction. Within this ML, an area with sup…
View article: Long‐Range SECCM Enables High‐Throughput Electrochemical Screening of High Entropy Alloy Electrocatalysts at Up‐To‐Industrial Current Densities
Long‐Range SECCM Enables High‐Throughput Electrochemical Screening of High Entropy Alloy Electrocatalysts at Up‐To‐Industrial Current Densities Open
High‐entropy alloys (HEAs), especially in the form of compositional complex solid solutions (CCSS), have gained attention in the field of electrocatalysis. However, exploring their vast composition space concerning their electrocatalytic p…
View article: Oxidative Depolymerisation of Kraft Lignin: From Fabrication of Multi‐Metal‐Modified Electrodes For Vanillin Electrogeneration via Pulse Electrolysis To High‐Throughput Screening of Multi‐Metal Composites
Oxidative Depolymerisation of Kraft Lignin: From Fabrication of Multi‐Metal‐Modified Electrodes For Vanillin Electrogeneration via Pulse Electrolysis To High‐Throughput Screening of Multi‐Metal Composites Open
The production of green hydrogen may be greatly aided by the use of an alternative anode reaction replacing oxygen evolution to increase energy efficiency and concomitantly generate value‐added products. Lignin, a major component of plant …
View article: Combinatorial Screening of Electronic and Geometric Effects in Compositionally Complex Solid Solutions Toward a Rational Design of Electrocatalysts
Combinatorial Screening of Electronic and Geometric Effects in Compositionally Complex Solid Solutions Toward a Rational Design of Electrocatalysts Open
Alloying dissimilar elements presents an effective strategy for enhancing the electrocatalytic properties of multi‐metal materials. This enhancement can be attributed to the modification of electronic and geometric effects, which play a cr…
View article: A Flexible Theory for Catalysis: Learning Alkaline Oxygen Reduction on Complex Solid Solutions within the Ag−Pd−Pt−Ru Composition Space**
A Flexible Theory for Catalysis: Learning Alkaline Oxygen Reduction on Complex Solid Solutions within the Ag−Pd−Pt−Ru Composition Space** Open
Compositionally complex materials such as high‐entropy alloys and oxides have the potential to be efficient platforms for catalyst discovery because of the vast chemical space spanned by these novel materials. Identifying the composition o…
View article: A Flexible Theory for Catalysis: Learning Alkaline Oxygen Reduction on Complex Solid Solutions within the Ag−Pd−Pt−Ru Composition Space**
A Flexible Theory for Catalysis: Learning Alkaline Oxygen Reduction on Complex Solid Solutions within the Ag−Pd−Pt−Ru Composition Space** Open
Compositionally complex materials such as high‐entropy alloys and oxides have the potential to be efficient platforms for catalyst discovery because of the vast chemical space spanned by these novel materials. Identifying the composition o…
View article: A Flexible Theory for Catalysis: Learning Alkaline Oxygen Reduction on Complex Solid Solutions within the Ag-Pd-Pt-Ru Composition Space
A Flexible Theory for Catalysis: Learning Alkaline Oxygen Reduction on Complex Solid Solutions within the Ag-Pd-Pt-Ru Composition Space Open
Compositionally complex materials such as high-entropy alloys and oxides have the potential to be efficient platforms for catalyst discovery because of the vast chemical space spanned by these novel materials. Identifying the composition o…
View article: Skalierbare Synthese von Multi‐Metall‐Elektrokatalysatorpulvern und ‐elektroden und ihre Anwendung für die Sauerstoffentwicklung und Wasserspaltung
Skalierbare Synthese von Multi‐Metall‐Elektrokatalysatorpulvern und ‐elektroden und ihre Anwendung für die Sauerstoffentwicklung und Wasserspaltung Open
Multimetall‐Elektrokatalysatoren bieten nahezu unbegrenzte katalytische Möglichkeiten, die sich aus synergistischen Elementwechselwirkungen ergeben. Wir schlagen eine Polymer/Metallsalz‐Sprühtechnik vor, die leicht angepasst werden kann, u…
View article: Scalable Synthesis of Multi‐Metal Electrocatalyst Powders and Electrodes and their Application for Oxygen Evolution and Water Splitting
Scalable Synthesis of Multi‐Metal Electrocatalyst Powders and Electrodes and their Application for Oxygen Evolution and Water Splitting Open
Multi‐metal electrocatalysts provide nearly unlimited catalytic possibilities arising from synergistic element interactions. We propose a polymer/metal precursor spraying technique that can easily be adapted to produce a large variety of c…
View article: Microscale Combinatorial Libraries for the Discovery of High‐Entropy Materials
Microscale Combinatorial Libraries for the Discovery of High‐Entropy Materials Open
Polyelemental material systems, specifically high‐entropy alloys, promise unprecedented properties. Due to almost unlimited combinatorial possibilities, their exploration and exploitation is hard. This challenge is addressed by co‐sputteri…
View article: Discovery of High-Entropy Oxide Electrocatalysts: From Thin-Film Material Libraries to Particles
Discovery of High-Entropy Oxide Electrocatalysts: From Thin-Film Material Libraries to Particles Open
Discovery of new high-entropy electrocatalysts requires testing of hundreds to thousands of possible compositions, which can be addressed most efficiently by high-throughput experimentation on thin-film material libraries. Since the condit…
View article: High-throughput exploration of structural and functional properties of the high entropy nitride system (Ti-Co-Mo-Ta-W)N
High-throughput exploration of structural and functional properties of the high entropy nitride system (Ti-Co-Mo-Ta-W)N Open
High entropy nitrides are largely unexplored materials with high potential to show good mechanical properties, high stability against chemicals, but also promising catalytic properties. The latter is due to their good electrical conductivi…
View article: Aerosol‐Based Synthesis of Multi‐metal Electrocatalysts for Oxygen Evolution and Glycerol Oxidation
Aerosol‐Based Synthesis of Multi‐metal Electrocatalysts for Oxygen Evolution and Glycerol Oxidation Open
Discovery of new catalysts is crucial for future growth and development of environmentally friendly energy conversion processes e. g. the production of hydrogen by water electrolysis. We developed an aerosol‐based synthesis technique as a …
View article: Unravelling Composition–Activity–Stability Trends in High Entropy Alloy Electrocatalysts by Using a Data‐Guided Combinatorial Synthesis Strategy and Computational Modeling
Unravelling Composition–Activity–Stability Trends in High Entropy Alloy Electrocatalysts by Using a Data‐Guided Combinatorial Synthesis Strategy and Computational Modeling Open
High entropy alloys (HEA) comprise a huge search space for new electrocatalysts. Next to element combinations, the optimization of the chemical composition is essential for tuning HEA to specific catalytic processes. Simulations of electro…
View article: Bayesian Optimization of High‐Entropy Alloy Compositions for Electrocatalytic Oxygen Reduction**
Bayesian Optimization of High‐Entropy Alloy Compositions for Electrocatalytic Oxygen Reduction** Open
Active, selective and stable catalysts are imperative for sustainable energy conversion, and engineering materials with such properties are highly desired. High‐entropy alloys (HEAs) offer a vast compositional space for tuning such propert…
View article: Zooming‐in – Visualization of active site heterogeneity in high entropy alloy electrocatalysts using scanning electrochemical cell microscopy
Zooming‐in – Visualization of active site heterogeneity in high entropy alloy electrocatalysts using scanning electrochemical cell microscopy Open
Complex solid solutions (“high entropy alloys” with a single solid‐solution phase) hold great promise in electrocatalysis because of their nearly unlimited number of different active sites exposed at the surface. It has been shown by theor…
View article: Searching novel complex solid solution electrocatalysts in unconventional element combinations
Searching novel complex solid solution electrocatalysts in unconventional element combinations Open
Despite outstanding accomplishments in catalyst discovery, finding new, more efficient, environmentally neutral, and noble metal-free catalysts remains challenging and unsolved. Recently, complex solid solutions consisting of at least five…
View article: Combinatorial materials discovery strategy for high entropy alloy electrocatalysts using deposition source permutations
Combinatorial materials discovery strategy for high entropy alloy electrocatalysts using deposition source permutations Open
High entropy alloys offer a huge search space for new electrocatalysts. Searching for a global property maximum in one quinary system could require, depending on compositional resolution, the synthesis of up to 10E6 samples which is imposs…
View article: Bayesian Optimization of High-Entropy Alloy Compositions for\n Electrocatalytic Oxygen Reduction
Bayesian Optimization of High-Entropy Alloy Compositions for\n Electrocatalytic Oxygen Reduction Open
Active, selective and stable catalysts are imperative for sustainable energy\nconversion, and engineering materials with such properties are highly desired.\nHigh-entropy alloys (HEAs) offer a vast compositional space for tuning such\nprop…
View article: Graphical Abstract: Angew. Chem. Int. Ed. 13/2021
Graphical Abstract: Angew. Chem. Int. Ed. 13/2021 Open
Metal-Organic FrameworksIn their Communication on page 6920, Da-Huan Liu, Zhi-Yuan Gu et al. report ah ost-guest noncovalent strategy to tune the stacking modes of metal-organic framework nanosheets for alkane isomer separation.
View article: Complex‐Solid‐Solution Electrocatalyst Discovery by Computational Prediction and High‐Throughput Experimentation**
Complex‐Solid‐Solution Electrocatalyst Discovery by Computational Prediction and High‐Throughput Experimentation** Open
Complex solid solutions (“high entropy alloys”), comprising five or more principal elements, promise a paradigm change in electrocatalysis due to the availability of millions of different active sites with unique arrangements of multiple e…
View article: Importance of catalyst–photoabsorber interface design configuration on the performance of Mo-doped BiVO4 water splitting photoanodes
Importance of catalyst–photoabsorber interface design configuration on the performance of Mo-doped BiVO4 water splitting photoanodes Open
Photoelectrochemical water splitting is mostly impeded by the slow kinetics of the oxygen evolution reaction. The construction of photoanodes that appreciably enhance the efficiency of this process is of vital technological importance towa…
View article: Tuning Light‐Driven Water Oxidation Efficiency of Molybdenum‐Doped BiVO<sub>4</sub> by Means of Multicomposite Catalysts Containing Nickel, Iron, and Chromium Oxides
Tuning Light‐Driven Water Oxidation Efficiency of Molybdenum‐Doped BiVO<sub>4</sub> by Means of Multicomposite Catalysts Containing Nickel, Iron, and Chromium Oxides Open
Mo‐doped BiVO 4 has emerged as a promising material for photoelectrodes for photoelectrochemical water splitting, however, still shows a limited efficiency for light‐driven water oxidation. We present the influence of an oxygen‐evolution c…
View article: Tuning Light‐Driven Water Splitting Efficiency of Mo‐Doped BiVO<sub>4</sub>: Optimised Preparation and Impact of Oxygen Evolution Electrocatalysts
Tuning Light‐Driven Water Splitting Efficiency of Mo‐Doped BiVO<sub>4</sub>: Optimised Preparation and Impact of Oxygen Evolution Electrocatalysts Open
We present airbrush spray‐coating as a reproducible method for the preparation of Mo‐doped BiVO 4 (Mo : BiVO 4 ) as photoabsorber with different layer thicknesses and Mo content. Optimisation of layer thickness is aiming on diminishing lim…
View article: Ni-Fe-Cr-Oxides: An Efficient Catalyst Activated by Visible Light for the Oxygen Evolution Reaction
Ni-Fe-Cr-Oxides: An Efficient Catalyst Activated by Visible Light for the Oxygen Evolution Reaction Open
The oxygen evolution reaction (OER) is a thermodynamically and kinetically demanding process, therefore it requires the use of catalysts enabling to meet technologically relevant conditions. Here, we realized efficient OER catalysts fabric…