A5006249717- Electrocatalysts for Energy Conversion
- Fuel Cells and Related Materials
- Electrochemical Analysis and Applications
- Supercapacitor Materials and Fabrication
- Analytical Chemistry and Sensors
- Covalent Organic Framework Applications
- Catalytic Processes in Materials Science
- Membrane-based Ion Separation Techniques
- Advanced Memory and Neural Computing
- Anodic Oxide Films and Nanostructures
- Catalysis and Oxidation Reactions
- Graphene and Nanomaterials Applications
- Advancements in Solid Oxide Fuel Cells
RWTH Aachen University
2021-2025
Abstract This study explores the effect of nickel cobalt oxide (Ni‐Co‐O) anode layer microstructure on oxygen evolution reaction (OER). Four anodes with similar Ni‐Co‐O loadings and chemical characteristics but distinct morphologies are fabricated by ultrasonic spraying catalyst inks varying solvent composition (pure water versus a water‐ethanol mixture) drying temperatures (50 150 °C) (Ni) plates. Upon composition, particles in water‐based ink exhibited lower stability than...
Abstract In this study, we developed a statistical framework, named multistage data quantification (MSDQ), to evaluate representative surface characteristics such as roughness, area, and homogeneity score of cobalt oxide‐based anodes, contributing deeper insight into the quality anode surface. Atomic force microscopy (AFM) was employed capture morphology two anodes that have comparable loading oxide but exhibit distinct morphological features. Application MSDQ exposed notable disparities in...
Powdery hierarchical porous carbons serve as cost-effective, functional materials in various fields, namely energy storage, heterogeneous catalysis, electrochemistry, and water/wastewater treatment. Such powdered activated (PAC) limit new module designs require further preparation steps, for example, adding polymeric binders, to be shaped into a standalone geometry. Polymeric however, can block PACs' catalytic active sites and, more importantly, pose the risk of secondary pollution...
Increasing environmental concerns have redirected research efforts toward sustainable energy, prominently highlighting hydrogen as a promising solution [1]. Despite considerable advancements in water electrolysis, providing efficient energy conversion and storage, there exists gap our comprehensive understanding of the production chain. This includes insights from commercial powder materials to electrode fabrication their electrocatalytic behavior, representing an underexplored domain that...
This study explores the effect of Ni-Co-O anode layer microstructure on oxygen evolution reaction (OER). Four anodes with similar loadings and chemical characteristics but distinct morphologies are fabricated by ultrasonic spraying catalyst inks varying solvent composition (pure water vs a water-ethanol mixture) drying temperatures (50 °C 150 °C) Ni plates. Upon composition, particles in water-based ink exhibited lower stability than water-ethanol-based ink, boosting particle connectivity...
Ni-Co-based oxides (Ni-Co-O) are promising oxygen evolution reaction (OER) catalysts due to their adaptable structures, affordability, abundance, and strong electrochemical performance. While various studies explored the structure-activity relationships OER mechanisms in these catalysts, comprehensive anode development requires a systematic workflow covering all stages of catalyst optimization. Here, we present an integrated approach for characterizing commercial Ni-Co-O nanomaterials using...
Advancements in anode development substantially reduce the cost and enhance performance of water electrolysis. The strategic configuration nano-sized catalyst materials on supports is a pivotal factor expansion production layers has significant influence their electrochemical [1–3]. Therefore, it essential to understand structure formation mechanisms during electrode fabrication. This contribution aims explore inherent drying coating process subsequent morphological evolution anodes,...
Tackling climate change demands the deployment of sustainable technologies, among which alkaline water electrolysis (AWE) emerges as one pivotal solutions. In AWE, anode morphology plays a critical role in facilitating oxygen evolution reaction (OER), is key step splitting molecules into and hydrogen gas. OER performance can be enhanced by fine-tuning anodes [1, 2]. Therefore, there need to quantitatively comprehend surface or coating quality define relationships between these features...
Over the past decades, challenge of sustainable energy production at low cost has persisted. Hydrogen emerges as a viable alternative fuel for various applications, yet its utilization faces hurdles. This particularly concerns sluggish kinetics oxygen evolution reaction (OER) anode, necessitating higher input than theoretically optimal. Apart from an active electrocatalyst, structure anode coating significantly influences performance [1-2-3]. Typically, fluorinated polymer compounds serve...
In recent decades, the imperative for clean energy generation has grown significantly. Water electrolysis stands out as a sustainable method hydrogen production due to its zero carbon emissions. However, high requirements and costs hinder widespread adoption large-scale applications [1]. Non-noble metal-based materials have emerged cost-effective efficient anodes oxygen evolution reaction (OER). stability performance of these heavily rely on integration ionomers or binders into electrode...
The growing concern about environmental degradation caused by the use of conventional fossil fuels has triggered a significant paradigm shift in research and development sustainable energy sources such as hydrogen. Water electrolysis is promising approach for achieving efficient conversion storage [1]. While this process made advancements recently, an in-depth understanding entire chain from commercial powder materials to electrodes their electrocatalytic activity with useful correlations...
In article 2100062, Matthias Wessling and co-workers report a green templating route to produce tailor-made monolithic carbons using chitosan sucrose. The synthesis method offers high flexibility tune inner porosity surface area, heteroatom content, the final carbon monolith's geometry. Additionally, form with adequate separation properties paves way towards more sustainable concepts novel module designs.