Addressing the Challenge of Electrochemical Ionomer Oxidation in Future Anion Exchange Membrane Water Electrolyzers
Hydrogen production through anion-exchange membrane water electrolyzers (AEMWEs) offers cost advantages over proton-exchange membrane counterparts, mainly due to the good oxygen evolution reaction (OER) activity of platinum-group-metal-free catalysts in alkaline environments. However, the electroche...
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| Veröffentlicht in: | ACS energy letters 2024-06, Vol.9 (6), p.3074-3083 |
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| creator | Lim, Jihoon Klein, Jeffrey M. Lee, Seung Geol Park, Eun Joo Kang, Sun Young Maurya, Sandip Mustain, William E. Boettcher, Shannon Kim, Yu Seung |
| description | Hydrogen production through anion-exchange membrane water electrolyzers (AEMWEs) offers cost advantages over proton-exchange membrane counterparts, mainly due to the good oxygen evolution reaction (OER) activity of platinum-group-metal-free catalysts in alkaline environments. However, the electrochemical oxidation of ionomers at the OER catalyst interface can decrease the local electrode pH, which limits AEMWE performance. Various strategies at the single-cell-level have been explored to address this issue. This work reviews the current understanding of electrochemical ionomer oxidation and strategies to mitigate it, providing our perspective on each approach. Our analysis highlights the competitive adsorption strategy as particularly promising for mitigating ionomer oxidation. This Perspective also outlines future directions for advancing high-performance alkaline AEMWEs and other energy devices using hydrocarbon ionomers. |
| doi_str_mv | 10.1021/acsenergylett.4c00832 |
| format | Article |
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However, the electrochemical oxidation of ionomers at the OER catalyst interface can decrease the local electrode pH, which limits AEMWE performance. Various strategies at the single-cell-level have been explored to address this issue. This work reviews the current understanding of electrochemical ionomer oxidation and strategies to mitigate it, providing our perspective on each approach. Our analysis highlights the competitive adsorption strategy as particularly promising for mitigating ionomer oxidation. 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This Perspective also outlines future directions for advancing high-performance alkaline AEMWEs and other energy devices using hydrocarbon ionomers.</description><subject>adsorption</subject><subject>catalysts</subject><subject>electrodes</subject><subject>ionomers</subject><subject>oxidation</subject><issn>2380-8195</issn><issn>2380-8195</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2024</creationdate><recordtype>article</recordtype><recordid>eNqFkE1LAzEQhoMoWLQ_QQjet-ZjY3ePpbRaqPSieAzZZLabsptIkkLrrzelPehJ5jAzzDwvMy9CD5RMKGH0SekIDsL22ENKk1ITUnF2hUaMV6SoaC2uf9W3aBzjjhBCnyuRY4TizJgAMVq3xakDPO9U34PbAvYtXvSgU_C6g8Fq1eOVd36AgDcHa1Sy3mHr8HKf9gHwzJ36xUF36kS_wdAE5QB_qpSJi1J__IYQ79FNq_oI40u-Qx_Lxfv8tVhvXlbz2bpQbEpSIWpNtSjNFJqaK6ENZ42uBQioKy64FlUruOJClXya58woompTUkIa3phS8Dv0eNb1MVkZtU2gO-2dy7dIVlakFCwvifOSDj7GAK38CnZQ4SgpkSeH5R-H5cXhzNEzl8dy5_fB5Vf-YX4A3NqF2Q</recordid><startdate>20240614</startdate><enddate>20240614</enddate><creator>Lim, Jihoon</creator><creator>Klein, Jeffrey M.</creator><creator>Lee, Seung Geol</creator><creator>Park, Eun Joo</creator><creator>Kang, Sun Young</creator><creator>Maurya, Sandip</creator><creator>Mustain, William E.</creator><creator>Boettcher, Shannon</creator><creator>Kim, Yu Seung</creator><general>American Chemical Society</general><general>American Chemical Society (ACS)</general><scope>AAYXX</scope><scope>CITATION</scope><scope>OTOTI</scope><orcidid>https://orcid.org/0000-0002-7600-2008</orcidid><orcidid>https://orcid.org/0000-0002-5446-3890</orcidid><orcidid>https://orcid.org/0000-0001-7965-7387</orcidid><orcidid>https://orcid.org/0000-0001-7804-6410</orcidid><orcidid>https://orcid.org/0000000179657387</orcidid><orcidid>https://orcid.org/0000000178046410</orcidid><orcidid>https://orcid.org/0000000276002008</orcidid><orcidid>https://orcid.org/0000000232234376</orcidid><orcidid>https://orcid.org/0000000254463890</orcidid><orcidid>https://orcid.org/0000000160446301</orcidid><orcidid>https://orcid.org/0000000265153994</orcidid></search><sort><creationdate>20240614</creationdate><title>Addressing the Challenge of Electrochemical Ionomer Oxidation in Future Anion Exchange Membrane Water Electrolyzers</title><author>Lim, Jihoon ; Klein, Jeffrey M. ; Lee, Seung Geol ; Park, Eun Joo ; Kang, Sun Young ; Maurya, Sandip ; Mustain, William E. ; Boettcher, Shannon ; Kim, Yu Seung</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a270t-59c1c54d7eb93a5cd32bc95e5e98353c58f53a35a4373a52da0a9d4100b3bd453</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2024</creationdate><topic>adsorption</topic><topic>catalysts</topic><topic>electrodes</topic><topic>ionomers</topic><topic>oxidation</topic><toplevel>online_resources</toplevel><creatorcontrib>Lim, Jihoon</creatorcontrib><creatorcontrib>Klein, Jeffrey M.</creatorcontrib><creatorcontrib>Lee, Seung Geol</creatorcontrib><creatorcontrib>Park, Eun Joo</creatorcontrib><creatorcontrib>Kang, Sun Young</creatorcontrib><creatorcontrib>Maurya, Sandip</creatorcontrib><creatorcontrib>Mustain, William E.</creatorcontrib><creatorcontrib>Boettcher, Shannon</creatorcontrib><creatorcontrib>Kim, Yu Seung</creatorcontrib><creatorcontrib>Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)</creatorcontrib><collection>CrossRef</collection><collection>OSTI.GOV</collection><jtitle>ACS energy letters</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Lim, Jihoon</au><au>Klein, Jeffrey M.</au><au>Lee, Seung Geol</au><au>Park, Eun Joo</au><au>Kang, Sun Young</au><au>Maurya, Sandip</au><au>Mustain, William E.</au><au>Boettcher, Shannon</au><au>Kim, Yu Seung</au><aucorp>Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)</aucorp><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Addressing the Challenge of Electrochemical Ionomer Oxidation in Future Anion Exchange Membrane Water Electrolyzers</atitle><jtitle>ACS energy letters</jtitle><addtitle>ACS Energy Lett</addtitle><date>2024-06-14</date><risdate>2024</risdate><volume>9</volume><issue>6</issue><spage>3074</spage><epage>3083</epage><pages>3074-3083</pages><issn>2380-8195</issn><eissn>2380-8195</eissn><abstract>Hydrogen production through anion-exchange membrane water electrolyzers (AEMWEs) offers cost advantages over proton-exchange membrane counterparts, mainly due to the good oxygen evolution reaction (OER) activity of platinum-group-metal-free catalysts in alkaline environments. 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| title | Addressing the Challenge of Electrochemical Ionomer Oxidation in Future Anion Exchange Membrane Water Electrolyzers |
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