{"product_id":"ceaemsx37","title":"Anion-Exchange Membrane (Sustainion, X37-50) for CO2 \u0026 H2O Electrolysis, CEAEMSX37","description":"\u003cp\u003eSustainion® X37-50 (developed by Dioxide Materials) is a commercial imidazolium-functionalized styrene-copolymer anion-exchange membrane (AEM) with a nominal dry thickness of 50um.  It is designed for electrochemical CO2 reduction (CO2RR), anion-exchange membrane water electrolysis (AEMWE), and alkaline electrochemical flow reactors requiring high hydroxide\/carbonate conductivity and alkaline chemical resistance. \u003c\/p\u003e\n\u003cp\u003eThe main features of the Sustainion, X37-50 AEM are: (1) \u003cstrong\u003eResistance to Alkaline Degradation\u003c\/strong\u003e: Traditional quaternary ammonium groups easily degrade via Hofmann elimination or SN2 nucleophilic attack. The steric hindrance of the tetramethylimidazolium functional headgroup stabilizes the positive charge against ring opening in high-pH environments. (2) \u003cstrong\u003eLow Faradaic Polarization in CO2 Reduction\u003c\/strong\u003e: Exhibits high selectivity and high transport numbers for bicarbonate (HCO3^-) and carbonate (CO3^{2-}), facilitating CO2 conversion to CO, ethylene, or formic acid at high current densities (\u0026gt;200--500 mA\/cm2). (3) \u003cstrong\u003eHigh Alkaline Water Splitting Performance\u003c\/strong\u003e: Delivers low area-specific resistance (ASR) in 1 M KOH circulating electrolytes, achieving current densities exceeding 1.5-2.0 A\/cm2 below 2.0 V in AEM electrolyzer cells.\u003c\/p\u003e\n\u003ctable border=\"1\" style=\"width: 100.071%; height: 479px;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 30.2922%; height: 19.6px;\"\u003ePart Number\u003c\/td\u003e\n\u003ctd style=\"width: 69.3158%; height: 19.6px;\"\u003eCEAEMSX37 (C-E-AEM-SX37)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 30.2922%; height: 19.6px;\"\u003eBackbone\u003c\/td\u003e\n\u003ctd style=\"width: 69.3158%; height: 19.6px;\"\u003eCross-linked Polystyrene with 1,2,4,5-tetramethylimidazolium\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 26.6px;\"\u003e\n\u003ctd style=\"width: 30.2922%; height: 26.6px;\"\u003e\u003cem\u003eThickness (um)\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 69.3158%; height: 26.6px;\"\u003e~50 um\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 30.2922%; height: 19.6px;\"\u003e\u003cem\u003eHydroxide Conductivity\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 69.3158%; height: 19.6px;\"\u003e\u0026gt;100 mS\/cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 30.2922%; height: 19.6px;\"\u003e\u003cem\u003eBicarbonate Conductivity\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 69.3158%; height: 19.6px;\"\u003e20-45 mS\/cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.2px;\"\u003e\n\u003ctd style=\"width: 30.2922%; height: 39.2px;\"\u003e\u003cem\u003eOperation Temperature\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 69.3158%; height: 39.2px;\"\u003eRT-60°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 260px;\"\u003e\n\u003ctd style=\"width: 30.2922%; height: 260px;\"\u003e\u003cem\u003eGrade Types \u0026amp; Applications\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 69.3158%; height: 260px;\"\u003e\n\u003cp\u003e(1) \u003cstrong\u003eGrade RT\u003c\/strong\u003e: Suitable for lab-scale CO2 \u0026amp; H2O electrolysis. It has a higher mechanical strength than Grade 60.\u003c\/p\u003e\n\u003cp\u003e(2) \u003cstrong\u003eGrade FA:\u003c\/strong\u003e Specifically design for CO2 reduction to formic acid. \u003c\/p\u003e\n\u003cp\u003e(3) \u003cstrong\u003eGrade 60\u003c\/strong\u003e: Suitable for CO2 \u0026amp; H2O electrolysis under strict requirement of ethylene glycol level. It has a higher mechanical strength compared to Grade-RT. \u003c\/p\u003e\n\u003cp\u003e(4) \u003cstrong\u003eGrade T\u003c\/strong\u003e: It has the highest mechanical strength, especially suitable for industrial-scale ware electrolysis for long-term operation.\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 35.6px;\"\u003e\n\u003ctd style=\"width: 30.2922%; height: 35.6px;\"\u003e\u003cem\u003ePretreatment\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 69.3158%; height: 35.6px;\"\u003e\n\u003cp\u003eImmerse the membrane in 1 M KOH solution for 12-72 h at RT. \u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.2px;\"\u003e\n\u003ctd style=\"width: 30.2922%; height: 39.2px;\"\u003e\u003cem\u003ePackage Grade\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 69.3158%; height: 39.2px;\"\u003e10cm*10cm or 20cm*20cm\/pcs\/pack (other sheet sizes also can be supplied upon request)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eReference:\u003c\/strong\u003e\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/pubs.acs.org\/aamick\/article-abstract\/17\/40\/56164\/3641011\/Screening-Anion-Exchange-Membranes-for-CO2?redirectedFrom=fulltext\"\u003eY. Zhao, et al., Screening Anion Exchange Membranes for CO2 Electrolysis, ACS Appl. Mater. Interfaces (2025) 17 (40): 56164–56174.\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/pubs.acs.org\/aelccp\/article-abstract\/8\/11\/4666\/340863\/In-Situ-Ionomer-Free-Catalyst-Coated-Membranes-for?redirectedFrom=fulltext\"\u003eT. H. Kong, et al., In-Situ Ionomer-Free Catalyst-Coated Membranes for Anion Exchange Membrane Water Electrolyzers, ACS Energy Lett. (2023) 8 (11): 4666–4673.\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"QNYCLZ","offers":[{"title":"Grade RT (12cm * 10cm)","offer_id":48208470737126,"sku":"CEAEMSX37GRT1210","price":219.0,"currency_code":"USD","in_stock":true},{"title":"Grade RT (20cm * 20cm)","offer_id":48208470769894,"sku":"CEAEMSX37GRT2020","price":699.0,"currency_code":"USD","in_stock":true},{"title":"Grade FA (11cm * 7cm)","offer_id":48208511041766,"sku":"CEAEMSX37GFA117","price":179.0,"currency_code":"USD","in_stock":true},{"title":"Grade 60 (10cm * 10cm)","offer_id":48208511074534,"sku":"CEAEMSX37G60S1010","price":219.0,"currency_code":"USD","in_stock":true},{"title":"Grade 60 (20cm * 20cm)","offer_id":48208511107302,"sku":"CEAEMSX37G60S2020","price":699.0,"currency_code":"USD","in_stock":true},{"title":"Grade T (12cm * 10cm)","offer_id":48208511140070,"sku":"CEAEMSX37GT1210","price":249.0,"currency_code":"USD","in_stock":true},{"title":"Grade T (20cm * 20cm)","offer_id":48208511172838,"sku":"CEAEMSX37GT2020","price":849.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0774\/6591\/1526\/files\/CEAEMSX37_02.jpg?v=1787081989","url":"https:\/\/echemsupplies.com\/products\/ceaemsx37","provider":"EChem Supplies","version":"1.0","type":"link"}