Review and Prospects of PEM Water Electrolysis at Elevated Temperature Operation
Source abstract
Abstract
Abstract Polymer electrolyte membrane water electrolyzers (PEMWE) are currently restricted to an operating temperature range between 50 to 80 °C. This review shows that elevated temperature (ET) above 90 °C can be advantageous with respect to i) reduced cell voltages, ii) a reduction of catalyst loading or possibly the employment of less noble electrocatalysts, and iii) a greater potential for waste heat utilization when the electrolyzer is operated in exothermal mode (when the cell voltage is higher than the thermoneutral voltage). Together with presenting an overview of the materials and components utilized in elevated temperature PEMWE under liquid and steam operation, this article summarizes the experimental and modeling performances reported to date, highlights the challenges ahead, and suggests aspects, which will need to be considered to improve the performance at elevated temperature. Key points, which arise from this work are the extensive need of re‐assessing the material selection both for the cell components and also at a system level, the effects and optimization of working with steam operation, and in the long run, the need for techno‐economic analyses to ultimately assess whether efficiency gains will truly translate to a cost‐effective technology alternative.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Hybrid Renewable Energy Systems · Fuel Cells and Related Materials · Advanced Battery Technologies Research
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Helmholtz‐Institute Erlangen‐Nuremberg for Renewable Energy (IEK‐11) Forschungszentrum Jülich GmbH Cauerstraße 1 91058 Erlangen Germany
Department of Chemical and Biological Engineering Friedrich‐Alexander University Erlangen‐Nuremberg Egerlandstraße 3 91058 Erlangen Germany
Institute of Technical Thermodynamics University of Rostock Albert‐Einstein‐Straße 2 18059 Rostock Germany
Institute of Electric Power Systems Leibniz University Hannover Appelstraße 9a 30167 Hannover Germany
Department of Energy Conversion and Storage Technical University of Denmark (DTU) Anker Engelunds Vej 301 Kongens Lyngby 2800 Denmark
Department of Chemical and Biological Engineering, Assistant Professorship Catalytic and Electrocatalytic Systems and Processes, Chair of Chemical Engineering Friedrich‐Alexander University Erlangen‐Nuremberg Egerlandstraße 3 91058 Erlangen Germany
Riva Power Systems GmbH & Co. KG Manfred‐von‐Ardenne‐Allee 33 71522 Backnang Germany
Funding
Danmarks Frie Forskningsfond · Bundesministerium für Bildung und Forschung
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