Sebastian Stypka

The Hydrogen and Fuel Cell Center

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Bernd Oberschachtsiek

The Hydrogen and Fuel Cell Center

Matthias Bähr

The Hydrogen and Fuel Cell Center

Angelika Heinzel

University of Duisburg-Essen

Sönke Gößling

Dortmund University of Applied Sciences and Arts

Christine Minke

Clausthal University of Technology

Claudia Schoeberl

Forschungsinstitut für Edelmetalle und Metallchemie

Thomas Turek

Clausthal University of Technology

Stina Bauer

Clausthal University of Technology

Mila Manolova

Forschungsinstitut für Edelmetalle und Metallchemie

Renate Freudenberger

Forschungsinstitut für Edelmetalle und Metallchemie

Cooperative Institutions

The Hydrogen and Fuel Cell Center

Clausthal University of Technology

Forschungszentrum Energiespeichertechnologien

Forschungsinstitut für Edelmetalle und Metallchemie

Robert Bosch (Germany)

University of Antwerp

University of Duisburg-Essen

University of Stuttgart

Stuttgart Observatory

Bavarian Polymer Institute

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Testing Field for PEM, Alkaline and Solid Oxide Electrolysis Technology

Chemie Ingenieur Technik (2018)

Sebastian Stypka Bernd Oberschachtsiek Ivan Radev Angelika Heinzel

Abstract To test commercially available water electrolysis systems under dynamic (close‐to‐real) operation a test area with three different electrolyzers is build up, covering the significant technologies alkaline water electrolysis, proton exchange membrane water electrolysis, and high temperature steam electrolysis using solid oxide electrolysis cells. The hydrogen outputs of the systems are in the range between 5 to 10 Nm 3 h −1 hydrogen at delivery pressures between 10 and 35 bar. Additional balance of plant is installed to demonstrate and evaluate the utilization of hydrogen for different applications.

High Temperature Electrolysis

High-pressure electrolysis

Alkaline water electrolysis

Electrolysis of water

10.1002/cite.201800039

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Citations (3)

Erzeugung von Wasserstoff durch Elektrolyse

Chemie in unserer Zeit (2023)

Marina Bockelmann Maik Becker Sebastian Stypka Stina Bauer Christine Minke

Zusammenfassung In diesem Übersichtsbeitrag berichten wir über die Grundlagen und den erreichten technischen Stand der Herstellung von grünem Wasserstoff durch Wasserelektrolyse. Für diese nachhaltige Produktion von Wasserstoff wird lediglich gereinigtes Wasser und erneuerbare elektrische Energie benötigt. Wegen der großen Stabilität des Wassermoleküls ist der Energiebedarf der Elektrolyse allerdings sehr hoch. Wir zeigen, dass es bereits drei technisch verfügbare Technologien (alkalische, PEM‐ und Hochtemperatur‐Elektrolyse) mit jeweils spezifischen Vor‐ und Nachteilen gibt. Zukünftige Entwicklungen konzentrieren sich auf die Senkung der Investitionen für Elektrolyseanlagen sowie auf die Verringerung der Verluste bei der Wasserspaltung, beispielsweise durch alkalische Membranelektrolyse mit einer eleganten Kombination der Eigenschaften von alkalischer und PEM‐Elektrolyse.

10.1002/ciuz.202300024

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Citations (3)

Development and testing of an anion exchange membrane electrolyser

International Journal of Hydrogen Energy (2015)

Mila Manolova Claudia Schoeberl Renate Freudenberger Corina Ellwein Jochen Kerres

Electrolysis of water

10.1016/j.ijhydene.2015.04.149

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Citations (13)

Artificial Neural Networks for Aging Simulation of Electrolysis Stacks

Chemie Ingenieur Technik (2020)

Matthias Bähr Andreas Gusak Sebastian Stypka Bernd Oberschachtsiek

Abstract This work shows the application of artificial neural networks in terms of modeling and simulating the aging process and the degradation of proton exchange membrane water electrolysis stacks. It includes the training process based on extracted measurement data, the evaluation, and the extrapolation of the network. The fundamentals of the utilized artificial neural network and the training algorithm are clarified. Next, the principle degradation effects are presented as well as the methodology of the underlying measurements. The resulting degradation of the electrolysis stack for different operation conditions is shown.

Degradation

Electrolysis of water

10.1002/cite.202000089

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Citations (14)

Proton Exchange Membrane Water Electrolysis Modeling for System Simulation and Degradation Analysis

Chemie Ingenieur Technik (2018)

Sönke Gößling Sebastian Stypka Matthias Bähr Bernd Oberschachtsiek Angelika Heinzel

Abstract This paper presents a numeric model for proton exchange membrane electrolysis, which describes the current‐voltage dependency. Besides physical constants and parameters characterizing material properties, it also contains parameters that cannot be measured ex situ, e.g., charge transfer coefficients and exchange current densities. To determine these parameters, the model includes an automated parameter calibration procedure that is able to find the best parameter combinations. An exemplary integration of the model in MATLAB/Simulink is presented, including a validation with dynamic measurement data.

Degradation

Electrolysis of water

10.1002/cite.201800041

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Citations (9)