TY - GEN A1 - Sampangi, Shiva Kumar A1 - Jarubula, Charath Krishna A1 - Elasmar, Mohamed A1 - Röntzsch, Lars T1 - Advanced anion exchange membrane electrolyser with 360 cm² active cell area T2 - EFCF 2025 : Fuel Cells, Electrolysers & H2 Processing N2 - Anion Exchange Membrane Water Electrolysis (AEMWE) has emerged as a promising technology for generating green hydrogen, particularly using intermittent renewable energy sources. AEMWE offers a compelling opportunity for cost-effective and sustainable hydrogen production by combining the advantages of traditional alkaline water electrolysis, such as the use of abundant and low-cost catalysts, with the benefits of Proton Exchange Membrane (PEM) electrolysis, which includes membrane separation with pure or low-concentration alkaline water and operation at high current densities. However, the widespread commercialization of AEMWE remains in its early stages, with small-scale active cell areas (less than 300 cm²) and ongoing challenges related to performance and durability. Consequently, it is vital to develop high-performance, durable AEMWE cells with larger active areas to facilitate the broader adoption of this technology. This contribution presents our recent progress in AEMWE, focusing on the development of cells with an active area of up to 360 cm². In particular, we are advancing AEMWE technology to Technology Readiness Level (TRL) 5/6, incorporating precious metal-free catalysts and advanced membranes to enhance the flexibility and efficiency of hydrogen production. As part of this effort, we have designed and experimentally tested a 100 cm² AEMWE cell and conceptualized and designed a 4-kW short-stack with a total active cell area of 1800 cm², as shown in Figure. 1, for high-pressure operation at 30 bar. Our ongoing efforts includes the laboratory testing of this newly designed stack at high pressure operation and evaluating its electrochemical performance and durability up to 1,000 h continuous operation using precious metal-free electrocatalysts. Y1 - 2025 U6 - https://doi.org/10.5281/zenodo.17244119 SP - 1 EP - 6 PB - European Fuel Cell Forum AG CY - Luzern ER - TY - GEN A1 - Reimann, Ansgar A1 - Kohlenbach, Paul A1 - Röntzsch, Lars T1 - Development of a novel quasi-2D PEM Electrolyzer Model in Modelica T2 - Proceedings of the 15th International Modelica Conference 2023, Aachen, October 9-11 N2 - To increase the efficiency of PEM electrolysis, simulation models are required that accurately describe the system's electrochemical and thermal behavior in a computationally efficient manner and are thus suitable for developing control strategies. Therefore, a pseudo-2D PEM electrolyzer model is presented in this paper, which is a compromise between the previously developed models regarding their model complexity. The electrochemical behavior is described with equations commonly used in the literature and the thermal behavior with correlations for gas-liquid heat transfer. Preliminary validation indicates that the model can describe the electrochemical behavior and thermal dynamics of a PEM electrolysis stack with good accuracy. Y1 - 2023 U6 - https://doi.org/10.3384/ecp20463 SN - 1650-3686 PB - Linköping University Electronic Press ER -