A5087327511- Electrocatalysts for Energy Conversion
- Fuel Cells and Related Materials
- Advanced battery technologies research
- Advanced Photocatalysis Techniques
- Electrochemical Analysis and Applications
- Advancements in Solid Oxide Fuel Cells
- Catalysis and Hydrodesulfurization Studies
- Advanced Memory and Neural Computing
- Anodic Oxide Films and Nanostructures
- Advancements in Battery Materials
- Chemical Synthesis and Characterization
Friedrich-Alexander-Universität Erlangen-Nürnberg
2021-2024
Forschungszentrum Jülich
2021-2024
Helmholtz Institute Erlangen-Nürnberg
2021-2024
ADVERTISEMENT RETURN TO ISSUEPREVEnergy FocusNEXTBenchmarking Fuel Cell Electrocatalysts Using Gas Diffusion Electrodes: Inter-lab Comparison and Best PracticesKonrad Ehelebe*Konrad EhelebeHelmholtz-Institute Erlangen-Nürnberg for Renewable Energy (IEK-11), Forschungszentrum Jülich GmbH, Cauerstrasse 1, 91058 Erlangen, GermanyDepartment of Chemical Biological Engineering, Friedrich-Alexander University Erlangen-Nürnberg, Germany*[email protected]More by Konrad...
Abstract Iridium oxide is the state‐of‐the‐art catalyst for electrochemical water oxidation in an acidic medium. Despite being one of rarest elements Earth's crust, there a pressing need to maximize utilization and longevity active iridium centers. While conventional low‐temperature synthesis can yield nanostructures with high mass‐specific activity, they are often insufficiently stable during oxidation. Structurally ordered most electrocatalysts utilized polymer electrolyte membrane...
The lack of efficient and durable proton exchange membrane fuel cell electrocatalysts for the oxygen reduction reaction is still restraining present hydrogen technology. Graphene-based carbon materials have emerged as a potential solution to replace existing black (CB) supports; however, their was never fully exploited commercial because more demanding properties. Here, unique industrially scalable synthesis platinum-based on graphene derivative (GD) supports presented. With an innovative...
Recently, attempts have been made to understand and quantify Ir dissolution in application-relevant single-cell electrolyzers. While obtaining crucial insights, these studies are hindered by intrinsic system complexity the required labor-intensive microscopic analyses of cross sections used catalyst coated membranes. To expand understanding processes realistic layers for oxygen evolution reaction accelerate discovery dissolution-stable materials, we utilize herein a gas-diffusion type...
A fast and facile pulse combustion (PC) method that allows for the continuous production of multigram quantities high-metal-loaded highly uniform supported metallic nanoparticles (SMNPs) is presented. Namely, various metal on carbon (M/C) composites have been prepared by using only three feedstock components: water, metal-salt, supporting material. The present approach can be elegantly utilized also numerous other applications in electrocatalysis, heterogeneous catalysis, sensors. In this...
To achieve widespread commercialization of proton exchange membrane (PEM) water electrolyzers, the optimization iridium (Ir) utilization is crucial. Traditional full-cell-based approaches are time-consuming and labor-intensive. In this work, feasibility using a gas diffusion electrode (GDE) half-cell as an alternative to full-cell setups for accelerated investigation Ir-oxide-containing anode catalyst layers (CLs) scrutinized. Using CLs composed Ir oxides different intrinsic oxygen evolution...
Fuel cell catalyst layers contain an essential active catalyst, a support material for electron conductivity, ionomer proton and porosity gas transport, which build up complex interfaces that determine the overall performance. Subtle variations in processing of can significantly alter performance, demands intensive research efforts, requires considerable amount time. In last few years, diffusion electrode (GDE) half-cell setups have been introduced as promising approach to speed layer...
Iridium oxide possesses unique physicochemical properties, making it the only oxygen evolution reaction (OER) catalyst used in modern proton exchange membrane water electrolysis (PEMWE). It is electronically conductive and relatively active towards OER. Moreover, can maintain these properties for a long time, guaranteeing required long-term operation of PEMWE. Nevertheless, iridium not entirely immune during In currently PEMWE, dissolution Ir masked by its high loading. This way-around...
Polymer electrolyte membrane (PEM) electrolysis is considered to play a vital role in the sustainable energy transition. The efficient generation of hydrogen largely influenced by slow rate anodic oxygen evolution reaction (OER). Iridium oxide represents one most promising catalysts for electrochemical oxidation water an acidic environment. Under harsh operating conditions at anode, iridium found be among dissolution-resistant while offering acceptable OER activity. However, iridium’s...
The standard approach to new electrocatalysts development and testing is prohibitively slow. Moreover, it fails meet the complexity of real devices. As a rule, consists routinely repeated steps, including synthesis, physicochemical characterization, electrochemical measurements. latter typically based on application rotating disk electrodes (RDE) as conductive solid support carry bulk cells with liquid electrolytes reaction media. current work will contain two main parts presenting our...
In order to reduce the cost of producing hydrogen through water electrolysis, novel technologies must be improved. Recently, merging conventional alkaline electrolysis (AEL) and proton exchange membrane (PEM) has led development anion (AEMWE), which offers several advantages over AEL PEM. a nutshell, this technique employs cheap, abundant, easily available (non-geostrategic) transition metals with anionic membranes, overcoming drawbacks PEM.[1] To reach readiness level technology, new...