High‐Performance Pure Water‐Fed Anion Exchange Membrane Water Electrolysis with Patterned Membrane via Mechanical Stress and Hydration‐Mediated Patterning Technique
Abstract Despite rapid advancements in anion exchange membrane water electrolysis (AEMWE) technology, achieving pure water‐fed AEMWE remains critical for system simplification and cost reduction. Under pure water‐fed conditions, electrochemical reactions occur solely at active sites connected to ion...
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Wiley
2025-02-01
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| Series: | Advanced Science |
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| Online Access: | https://doi.org/10.1002/advs.202409563 |
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| author | Yeonjae Lee Sungjun Kim Yoseph Shin Yeram Shin Seongmin Shin Sanghyeok Lee Minseop So Tae‐Ho Kim Sehkyu Park Jang Yong Lee Segeun Jang |
| author_facet | Yeonjae Lee Sungjun Kim Yoseph Shin Yeram Shin Seongmin Shin Sanghyeok Lee Minseop So Tae‐Ho Kim Sehkyu Park Jang Yong Lee Segeun Jang |
| author_sort | Yeonjae Lee |
| collection | DOAJ |
| description | Abstract Despite rapid advancements in anion exchange membrane water electrolysis (AEMWE) technology, achieving pure water‐fed AEMWE remains critical for system simplification and cost reduction. Under pure water‐fed conditions, electrochemical reactions occur solely at active sites connected to ionic networks. This study introduces an eco‐friendly patterning technique leveraging membrane swelling properties by applying mechanical stress during dehydration under fixed constraints. The method increases active sites by creating additional hydroxide ion pathways at the membrane‐electrode interface, eliminating the need for additional ionomers in the electrode. This innovation facilitates ion conduction via locally shortened pathways. Membrane electrode assemblies (MEAs) with patterned commercial membranes demonstrated significantly improved performance and durability compared to MEAs with conventional catalyst‐coated substrates and flat membranes under pure water‐fed conditions. The universal applicability of this technique was confirmed using in‐house fabricated anion exchange membranes, achieving exceptional current densities of 13.7 A cm−2 at 2.0 V in 1.0 M potassium hydroxide (KOH) and 2.8 A cm−2 at 2.0 V in pure water at 60 °C. Furthermore, the scalability of the technique was demonstrated through successful fabrication and operation of large‐area cells. These findings highlight the potential of this patterning method to advance AEMWE technology, enabling practical applications under pure water‐fed conditions. |
| format | Article |
| id | doaj-art-f7765c01033c42dca21665ce5d786e02 |
| institution | Kabale University |
| issn | 2198-3844 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advanced Science |
| spelling | doaj-art-f7765c01033c42dca21665ce5d786e022025-02-04T13:14:55ZengWileyAdvanced Science2198-38442025-02-01125n/an/a10.1002/advs.202409563High‐Performance Pure Water‐Fed Anion Exchange Membrane Water Electrolysis with Patterned Membrane via Mechanical Stress and Hydration‐Mediated Patterning TechniqueYeonjae Lee0Sungjun Kim1Yoseph Shin2Yeram Shin3Seongmin Shin4Sanghyeok Lee5Minseop So6Tae‐Ho Kim7Sehkyu Park8Jang Yong Lee9Segeun Jang10School of Mechanical Engineering Kookmin University Seoul 02707 Republic of KoreaHydrogen Energy Research Center Korea Research Institute of Chemical Technology (KRICT) Daejeon 34114 Republic of KoreaSchool of Mechanical Engineering Kookmin University Seoul 02707 Republic of KoreaHydrogen Energy Research Center Korea Research Institute of Chemical Technology (KRICT) Daejeon 34114 Republic of KoreaHydrogen Energy Research Center Korea Research Institute of Chemical Technology (KRICT) Daejeon 34114 Republic of KoreaSchool of Mechanical Engineering Kookmin University Seoul 02707 Republic of KoreaSchool of Mechanical Engineering Kookmin University Seoul 02707 Republic of KoreaHydrogen Energy Research Center Korea Research Institute of Chemical Technology (KRICT) Daejeon 34114 Republic of KoreaDepartment of Chemical Engineering Kwangwoon University Seoul 01897 Republic of KoreaDepartment of Chemical Engineering Konkuk University Seoul 05029 Republic of KoreaSchool of Mechanical Engineering Kookmin University Seoul 02707 Republic of KoreaAbstract Despite rapid advancements in anion exchange membrane water electrolysis (AEMWE) technology, achieving pure water‐fed AEMWE remains critical for system simplification and cost reduction. Under pure water‐fed conditions, electrochemical reactions occur solely at active sites connected to ionic networks. This study introduces an eco‐friendly patterning technique leveraging membrane swelling properties by applying mechanical stress during dehydration under fixed constraints. The method increases active sites by creating additional hydroxide ion pathways at the membrane‐electrode interface, eliminating the need for additional ionomers in the electrode. This innovation facilitates ion conduction via locally shortened pathways. Membrane electrode assemblies (MEAs) with patterned commercial membranes demonstrated significantly improved performance and durability compared to MEAs with conventional catalyst‐coated substrates and flat membranes under pure water‐fed conditions. The universal applicability of this technique was confirmed using in‐house fabricated anion exchange membranes, achieving exceptional current densities of 13.7 A cm−2 at 2.0 V in 1.0 M potassium hydroxide (KOH) and 2.8 A cm−2 at 2.0 V in pure water at 60 °C. Furthermore, the scalability of the technique was demonstrated through successful fabrication and operation of large‐area cells. These findings highlight the potential of this patterning method to advance AEMWE technology, enabling practical applications under pure water‐fed conditions.https://doi.org/10.1002/advs.202409563anion exchange membrane water electrolysisdehydrationenlarged interfacial areapatterned membranepure water fed |
| spellingShingle | Yeonjae Lee Sungjun Kim Yoseph Shin Yeram Shin Seongmin Shin Sanghyeok Lee Minseop So Tae‐Ho Kim Sehkyu Park Jang Yong Lee Segeun Jang High‐Performance Pure Water‐Fed Anion Exchange Membrane Water Electrolysis with Patterned Membrane via Mechanical Stress and Hydration‐Mediated Patterning Technique Advanced Science anion exchange membrane water electrolysis dehydration enlarged interfacial area patterned membrane pure water fed |
| title | High‐Performance Pure Water‐Fed Anion Exchange Membrane Water Electrolysis with Patterned Membrane via Mechanical Stress and Hydration‐Mediated Patterning Technique |
| title_full | High‐Performance Pure Water‐Fed Anion Exchange Membrane Water Electrolysis with Patterned Membrane via Mechanical Stress and Hydration‐Mediated Patterning Technique |
| title_fullStr | High‐Performance Pure Water‐Fed Anion Exchange Membrane Water Electrolysis with Patterned Membrane via Mechanical Stress and Hydration‐Mediated Patterning Technique |
| title_full_unstemmed | High‐Performance Pure Water‐Fed Anion Exchange Membrane Water Electrolysis with Patterned Membrane via Mechanical Stress and Hydration‐Mediated Patterning Technique |
| title_short | High‐Performance Pure Water‐Fed Anion Exchange Membrane Water Electrolysis with Patterned Membrane via Mechanical Stress and Hydration‐Mediated Patterning Technique |
| title_sort | high performance pure water fed anion exchange membrane water electrolysis with patterned membrane via mechanical stress and hydration mediated patterning technique |
| topic | anion exchange membrane water electrolysis dehydration enlarged interfacial area patterned membrane pure water fed |
| url | https://doi.org/10.1002/advs.202409563 |
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