| Téléchargement | - Voir la version finale : Performance and stability of Aemion and Aemion+ membranes in zero‐gap CO₂ electrolyzers with mild anolyte solutions (PDF, 1.2 Mio)
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| DOI | Trouver le DOI : https://doi.org/10.1002/cssc.202202376 |
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| Auteur | Rechercher : Mardle, Peter1Identifiant ORCID : https://orcid.org/0000-0002-0088-2109; Rechercher : Gangrade, Apurva2Identifiant ORCID : https://orcid.org/0000-0002-0904-4486; Rechercher : Saatkamp, Torben2Identifiant ORCID : https://orcid.org/0000-0002-7260-1513; Rechercher : Jiang, Zhengming1; Rechercher : Cassegrain, Simon2Identifiant ORCID : https://orcid.org/0000-0002-9348-0503; Rechercher : Zhao, Nana1Identifiant ORCID : https://orcid.org/0000-0002-9391-7795; Rechercher : Shi, Zhiqing1Identifiant ORCID : https://orcid.org/0000-0002-7929-945X; Rechercher : Holdcroft, Steven2Identifiant ORCID : https://orcid.org/0000-0002-0198-668X |
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| Affiliation | - Conseil national de recherches du Canada. Énergie, les mines et l'environnement
- Simon Fraser University
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| Format | Texte, Article |
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| Résumé | The dependence of performance and stability of a zero-gap CO₂ electrolyzer on the properties of the anion exchange membrane (AEM) is examined. This work firstly assesses the influence of the anolyte when using an Aemion membrane and then shows that when using 10 mM KHCO₃, a CO₂ electrolyzer using a next-generation Aemion+ membrane can achieve lower cell voltages and longer lifetimes due to increased water permeation. The impact of lower permselectivity of Aemion+ on water transport is also discussed. Using Aemion+, a cell voltage of 3.17 V at 200 mA cm⁻² is achieved at room temperature, with a faradaic efficiency of >90 %. Stable CO₂ electrolysis at 100 mA cm⁻² is demonstrated for 100 h, but with reduced lifetime at 300 mA cm⁻². However, the lifetime of the cell at high current densities is shown to be increased by improving water transport characteristics of the AEM and reducing dimensional swelling, as well as by improving cathode design to reduce localized dehydration of the membrane. |
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| Date de publication | 2023-03-30 |
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| Maison d’édition | Chemistry Europe: European Chemical Societies Publishing
John Wiley & Sons, Inc. |
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| Licence | |
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| Dans | |
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| Langue | anglais |
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| Publications évaluées par des pairs | Oui |
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| Exporter la notice | Exporter en format RIS |
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| Signaler une correction | Signaler une correction (s'ouvre dans un nouvel onglet) |
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| Identificateur de l’enregistrement | 96e8944a-62e0-4a89-83f6-4fdd5b8e150c |
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| Enregistrement créé | 2023-08-31 |
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| Enregistrement modifié | 2023-08-31 |
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