K. Andreas Friedrich
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View article: The Importance of the Design of Porous Transport Layers: Unveiling the Interplay Between Structure, Mechanics, and Electrochemistry in Anion Exchange Membrane Water Electrolysis
The Importance of the Design of Porous Transport Layers: Unveiling the Interplay Between Structure, Mechanics, and Electrochemistry in Anion Exchange Membrane Water Electrolysis Open
The global drive for sustainable energy solutions intensified interest in anion exchange membrane water electrolysis (AEMWE), as a promising hydrogen production pathway, leveraging renewable energy sources. However, widespread adoption is …
View article: Degradation mechanisms of a proton exchange membrane water electrolyzer stack operating at high current densities
Degradation mechanisms of a proton exchange membrane water electrolyzer stack operating at high current densities Open
On the path to an emission free energy economy, proton exchange membrane water electrolysis (PEMWE) is a promising technology for a sustainable production of green hydrogen at high current densities and thus high production rates. Long lif…
View article: UTILE-Pore: Deep Learning-Enabled 3D Analysis of Porous Materials in Polymer Electrolyte Membrane-Based Energy Devices
UTILE-Pore: Deep Learning-Enabled 3D Analysis of Porous Materials in Polymer Electrolyte Membrane-Based Energy Devices Open
3D imaging of porous materials in polymer electrolyte membrane (PEM)-based devices, coupled with in situ diagnostics and advanced multi-scale modelling approaches, is pivotal to deciphering the interplay of mass transport phenomena, perfor…
View article: Electrolyte Transport Parameters and Interfacial Effects in Calcium Metal Batteries: Analogies and Differences to Magnesium and Lithium Counterparts
Electrolyte Transport Parameters and Interfacial Effects in Calcium Metal Batteries: Analogies and Differences to Magnesium and Lithium Counterparts Open
Magnesium and calcium metal batteries are promising emerging technologies. Their high capacity and low redox potential translate to a high theoretical energy density, making them attractive candidates for future energy storage solutions. O…
View article: Influence of Ink Composition and Drying Technique on the Performance and Stability of Fe–N–C‐Based High‐Temperature Proton Exchange Membrane Fuel Cells
Influence of Ink Composition and Drying Technique on the Performance and Stability of Fe–N–C‐Based High‐Temperature Proton Exchange Membrane Fuel Cells Open
Fe–N–C catalysts have emerged as a potentially cost‐effective alternative to Pt‐based catalysts in high‐temperature polymer electrolyte membrane fuel cell cathodes. However, the optimal design and deposition method of the Pt‐free catalyst …
View article: Interfacial processes of Mg anodes for magnesium-sulfur batteries: An EIS study
Interfacial processes of Mg anodes for magnesium-sulfur batteries: An EIS study Open
The development of magnesium batteries strongly relies on the use of a Mg metal anode and its benefits of high volumetric capacity, reduction potential, low cost and improved safety, however, to date, it still lacks sufficient cycling stab…
View article: Detailed investigation of degradation modes and mechanisms of a cylindrical high-energy Li-ion cell cycled at different temperatures
Detailed investigation of degradation modes and mechanisms of a cylindrical high-energy Li-ion cell cycled at different temperatures Open
The temperature-dependent degradation of a cylindrical high-energy NCA/graphite-SiOx cell is investigated by a combination of in situ and post-mortem techniques. Cells are cycled at 10 °C, 25 °C and 35 °C, with periodic check-up tests to i…
View article: Investigation of the Degradation Phenomena of a Proton Exchange Membrane Electrolyzer Stack by Successive Replacement of Aged Components in Single Cells
Investigation of the Degradation Phenomena of a Proton Exchange Membrane Electrolyzer Stack by Successive Replacement of Aged Components in Single Cells Open
Due to their compactness and high flexibility to operate under dynamic conditions, proton exchange membrane water electrolyzers (PEMWEs) are ideal systems for the production of green hydrogen from renewable energy sources. For the widespre…
View article: Impact of the Sulfurized Polyacrylonitrile Cathode Microstructure on the Electrochemical Performance of Lithium–Sulfur Batteries
Impact of the Sulfurized Polyacrylonitrile Cathode Microstructure on the Electrochemical Performance of Lithium–Sulfur Batteries Open
The growing demand for advanced energy storage systems requires the development of next‐generation battery technologies with superior energy density and cycle stability, with lithium–sulfur (Li–S) batteries representing a promising solutio…
View article: Binary Transition Metal and Nitrogen Functionalised Silicon Oxycarbide Electrocatalysts for Zn–Air Battery Air Electrode Application
Binary Transition Metal and Nitrogen Functionalised Silicon Oxycarbide Electrocatalysts for Zn–Air Battery Air Electrode Application Open
The need for the wider adoption of next‐generation energy storage systems due to the usage of renewable energy encourages the development of alternatives to the lithium‐ion battery (LIB) technology. Rechargeable zinc–air battery (RZAB) cou…
View article: Binary transition metal and ZIF-8 functionalised polymer-derived ceramic catalysts for high temperature PEM fuel cell cathode
Binary transition metal and ZIF-8 functionalised polymer-derived ceramic catalysts for high temperature PEM fuel cell cathode Open
For addressing the clean energy transition, the high-temperature proton exchange membrane fuel cells (HT-PEMFC) are attractive energy conversion devices for the long-range and heavy-duty vehicles, auxiliary power units, and aviation applic…
View article: Novel Atmospherically Plasma Sprayed Micro Porous Layer for Anion Exchange Membrane Water Electrolysis Operating With Supporting Electrolyte
Novel Atmospherically Plasma Sprayed Micro Porous Layer for Anion Exchange Membrane Water Electrolysis Operating With Supporting Electrolyte Open
Anion exchange membrane water electrolysis (AEMWE) is one of the most promising candidates for green hydrogen production needed for the de‐fossilization of the global economy. As AEMWE can operate at high efficiency without expensive Plati…
View article: Opportunities of in situ diagnostics and current distribution in proton exchange membrane water Electrolyzers with segmented bipolar plates
Opportunities of in situ diagnostics and current distribution in proton exchange membrane water Electrolyzers with segmented bipolar plates Open
The widespread implementation of renewable energy for the decarbonization of our society is a pressing challenge that requires the use of large-scale electrolyzers to produce green hydrogen. Proton exchange membrane water electrolysis (PEM…
View article: Impact of Aerogel Modification for Fe−N−C Activity and Stability towards Oxygen Reduction Reaction in Phosphoric Acid Electrolyte
Impact of Aerogel Modification for Fe−N−C Activity and Stability towards Oxygen Reduction Reaction in Phosphoric Acid Electrolyte Open
Resorcinol‐formaldehyde based carbon aerogel (CA) has been tailored to meet the requirements as a Fe−N−C carbon support, aiming to provide sufficient, inexpensive cathode catalysts for high‐temperature polymer electrolyte membrane fuel cel…
View article: Factors determining the efficacy of AI-generated word problems for content-specific math language courses in higher education
Factors determining the efficacy of AI-generated word problems for content-specific math language courses in higher education Open
The use of artificial intelligence (AI) tools to generate content-specific instructional materials has attracted the interest of Language for Specific Purposes (LSP) educators in higher education, as language courses in this setting typica…
View article: Rapid Scalable One‐step Production of Catalysts for Low‐Iridium Content Proton Exchange Membrane Water Electrolyzers
Rapid Scalable One‐step Production of Catalysts for Low‐Iridium Content Proton Exchange Membrane Water Electrolyzers Open
Proton exchange membrane water electrolysis (PEMWE) is a promising technology for green hydrogen production, although its widespread development with state‐of‐the‐art loadings is threatened by the scarcity of iridium (Ir). Homogeneous disp…
View article: Effect of high-boiling point solvents on inkjet printing of catalyst layers for proton exchange membrane fuel cells
Effect of high-boiling point solvents on inkjet printing of catalyst layers for proton exchange membrane fuel cells Open
Inkjet printing (IJP) is considered as a promising and flexible method for low cost and drop-on-demand pattern formation in proton exchange membrane (PEM) fuel cells. Although significant advancements have been made in inkjet-printed elect…
View article: Strategy to tune properties of PEM fuel cell electrodes with low Pt loading based on inkjet printing parameters
Strategy to tune properties of PEM fuel cell electrodes with low Pt loading based on inkjet printing parameters Open
Inkjet printing (IJP) is a versatile technique for the precise design and customization of low Pt-loaded proton exchange membrane (PEM) fuel cells based on the fully digital driven processing. Here, piezoelectric based dropon-demand inkjet…
View article: Continuous Biological Ex Situ Methanation of CO2 and H2 in a Novel Inverse Membrane Reactor (IMR)
Continuous Biological Ex Situ Methanation of CO2 and H2 in a Novel Inverse Membrane Reactor (IMR) Open
A promising approach for carbon dioxide (CO2) valorization and storing excess electricity is the biological methanation of hydrogen and carbon dioxide to methane. The primary challenge here is to supply sufficient quantities of dissolved h…
View article: On-board hydrogen production from urea via electrolysis to promote low-temperature catalytic reduction of NOx emissions
On-board hydrogen production from urea via electrolysis to promote low-temperature catalytic reduction of NOx emissions Open
Nitrogen oxides emissions pose a significant environmental challenge, particularly in heavily industrialized, high-traffic regions. Global NOx levels continue to rise, despite various aftertreatment techniques being deployed to mitigate em…
View article: Corrosion Study of Current Collectors for Magnesium Batteries
Corrosion Study of Current Collectors for Magnesium Batteries Open
For rechargeable magnesium batteries, chlorine‐containing electrolytes are used because chlorine species reduce the energy barrier for the intercalation process at the cathode. However, these species can cause corrosion of the cathode‐side…
View article: Improving the Ca‐assisted Urea‐Glass Method for the Synthesis of Zirconium Nitride as Potential Electrocatalyst for the Nitrogen Reduction Reaction
Improving the Ca‐assisted Urea‐Glass Method for the Synthesis of Zirconium Nitride as Potential Electrocatalyst for the Nitrogen Reduction Reaction Open
Zirconium mononitride (ZrN), among other nitrides, is of interest as a catalyst in general and especially for the electrochemical nitrogen reduction reaction (NRR). Synthesis of nanoparticulate ZrN is challenging due to the formation of un…
View article: Solid Oxide Electrolysis Cell-Based Syngas Production and Tailoring: A Comparative Assessment of Coelectrolysis, Separate Steam, CO<sub>2</sub> Electrolysis, and Steam Electrolysis
Solid Oxide Electrolysis Cell-Based Syngas Production and Tailoring: A Comparative Assessment of Coelectrolysis, Separate Steam, CO<sub>2</sub> Electrolysis, and Steam Electrolysis Open
Solid oxide electrolysis cell (SOC) systems offer a promising solution for generating green syngas crucial in decarbonizing challenging sectors like chemicals, steel, and transport. In this steady-state system modeling study, three distinc…
View article: Temperature Reduction as Operando Performance Recovery Procedure for Polymer Electrolyte Membrane Fuel Cells
Temperature Reduction as Operando Performance Recovery Procedure for Polymer Electrolyte Membrane Fuel Cells Open
To efficiently mitigate the reversible performance degradation of polymer electrolyte membrane fuel cells, it is crucial to thoroughly understand recovery effects. In this work, the effect of operando performance recovery by temperature re…
View article: Upscaling of Reactive Mass Transport through Porous Electrodes in Aqueous Flow Batteries
Upscaling of Reactive Mass Transport through Porous Electrodes in Aqueous Flow Batteries Open
Porous electrodes (PEs) are an important component of modern energy storage devices, such as lithium-ion batteries, flow batteries or fuel cells. Their complicated multiphase structure presents a considerable challenge to modeling and simu…