Optimizing flow configurations and membrane durability in chlor-alkali reversible electrochemical cells
This study investigated the effects of inlet/outlet flow configurations and the type of cationic exchange membrane in the performance of chlor-alkali reversible cells designed for renewable energy storage. Using a custom 3D-printed, laboratory-made electrochemical cell capable of operating in both e...
| Autores: | , , , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2025 |
| País: | España |
| Institución: | Universidad de Castilla-La Mancha |
| Repositorio: | RUIdeRA. Repositorio Institucional de la UCLM |
| OAI Identifier: | oai:ruidera.uclm.es:10578/45116 |
| Acceso en línea: | https://doi.org/10.1016/j.est.2025.116949 https://www.sciencedirect.com/science/article/pii/S2352152X25016627?ssrnid=5045880&dgcid=SSRN_redirect_SD https://hdl.handle.net/10578/45116 |
| Access Level: | acceso abierto |
| Palabra clave: | Chlor-alkali Efficiency Energy storage Hydrodynamics Unitized reversible cell |
| Sumario: | This study investigated the effects of inlet/outlet flow configurations and the type of cationic exchange membrane in the performance of chlor-alkali reversible cells designed for renewable energy storage. Using a custom 3D-printed, laboratory-made electrochemical cell capable of operating in both electrolysis and H2/Cl2 fuel cell modes. In electrolysis mode, the system produces chlorine (Cl2) gas at the anode, hydrogen (H2) gas at the cathode, and sodium hydroxide (NaOH) as a byproduct, which has potential applications in CO2 fixation. The performance of the cell with different membranes, both in Na+ and H+ forms, was studied, highlighting the influence of membrane type, temperature, and flow dynamics on system efficiency. Using the designed system, Faradaic efficiency for hydrogen production exceeds 96 %, with the highest energy efficiency reaching 42 % at 80 °C using Na+ form membranes, demonstrating the systems high effectiveness in converting energy during the electrolysis process. Also, it was found that increasing the temperature enhances the performance in both electrolysis and fuel cell modes. Membranes in the Na+ form perform better in electrolysis mode, while those in the H+ form show superior efficiency in fuel cell mode. Also, the results indicate optimal fluid dynamics, specifically vertical outlet configurations, enhance bubble removal, reduce ohmic resistance, and improve overall efficiency. |
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