| Download | - View final version: Performance and stability of Aemion and Aemion+ membranes in zero‐gap CO₂ electrolyzers with mild anolyte solutions (PDF, 1.2 MiB)
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| DOI | Resolve DOI: https://doi.org/10.1002/cssc.202202376 |
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| Author | Search for: Mardle, Peter1ORCID identifier: https://orcid.org/0000-0002-0088-2109; Search for: Gangrade, Apurva2ORCID identifier: https://orcid.org/0000-0002-0904-4486; Search for: Saatkamp, Torben2ORCID identifier: https://orcid.org/0000-0002-7260-1513; Search for: Jiang, Zhengming1; Search for: Cassegrain, Simon2ORCID identifier: https://orcid.org/0000-0002-9348-0503; Search for: Zhao, Nana1ORCID identifier: https://orcid.org/0000-0002-9391-7795; Search for: Shi, Zhiqing1ORCID identifier: https://orcid.org/0000-0002-7929-945X; Search for: Holdcroft, Steven2ORCID identifier: https://orcid.org/0000-0002-0198-668X |
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| Affiliation | - National Research Council of Canada. Energy, Mining and Environment
- Simon Fraser University
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| Format | Text, Article |
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| Abstract | 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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| Publication date | 2023-03-30 |
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| Publisher | Chemistry Europe: European Chemical Societies Publishing
John Wiley & Sons, Inc. |
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| Licence | |
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| Language | English |
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| Peer reviewed | Yes |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | 96e8944a-62e0-4a89-83f6-4fdd5b8e150c |
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| Record created | 2023-08-31 |
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| Record modified | 2023-08-31 |
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