{"product_id":"chopemfcemea","title":"Economic Membrane Electrode Assembly (MEA, 3-7 Layers) for H2-O2 Proton-Exchange Membrane Fuel Cell, CHOPEMFCEMEA","description":"\u003cp\u003eA Membrane Electrode Assembly (MEA) is the \"heart\" of a hydrogen-oxygen (H2-O2) fuel cell, where the electrochemical reaction occurs to produce electricity, heat, and water. It is a multi-layered component that separates fuel from oxidant while allowing the passage of ions to complete the circuit.\u003c\/p\u003e\n\u003cp\u003eA typical MEA is classified by its number of layers, with 5-layer and 3-layer configurations being the most common. (1) \u003cstrong\u003ePolymer Electrolyte Membrane (PEM)\u003c\/strong\u003e: The central layer, typically made of perfluorosulfonic acid (PFSA) like Nafion. It is thin (often under 20 um for transport) and conducts only positively charged protons while blocking electrons and reactant gases. (2) \u003cstrong\u003eCatalyst Layers (CL)\u003c\/strong\u003e: Applied to both sides of the membrane (Anode and Cathode). The anode side facilitates the Hydrogen Oxidation Reaction (HOR), splitting H2 into protons and electrons. The cathode side facilitates the Oxygen Reduction Reaction (ORR), where protons, electrons, and O2 combine to form water.Typically nanometer-sized Platinum (Pt) particles dispersed on high-surface-area carbon support and mixed with an ion-conducting polymer (ionomer). (3) \u003cstrong\u003eGas Diffusion Layers (GDL)\u003c\/strong\u003e: Located outside the catalyst layers in a 5-layer MEA.Composed of porous carbon paper or cloth, often coated with a Microporous Layer (MPL) of carbon and PTFE.Functions include uniform gas distribution, electrical conduction, and managing water removal to prevent \"flooding\".\u003c\/p\u003e\n\u003ctable style=\"width: 1048px;\" border=\"1\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 148px;\"\u003e MEA Layers\u003c\/td\u003e\n\u003ctd style=\"width: 281.725px;\"\u003e3 Layers\u003c\/td\u003e\n\u003ctd style=\"width: 295.275px;\"\u003e5 Layers\u003c\/td\u003e\n\u003ctd style=\"width: 288px;\"\u003e7 Layers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 148px;\"\u003e\u003cem\u003eMEA Composition \u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 281.725px;\"\u003eTwo Catalyst Layers + One Membrane\u003c\/td\u003e\n\u003ctd style=\"width: 295.275px;\"\u003eTwo Catalyst Layers+ One Membrane+ Two Framework\u003c\/td\u003e\n\u003ctd style=\"width: 288px;\"\u003eTwo Catalyst Layers+ One Membrane+ Two Framework + Two GDL Layers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 148px;\"\u003e\u003cem\u003eCatalysts\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 281.725px;\"\u003e\n\u003cp\u003ePt\/C (Johnson Matthey, 60 wt%)\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/echemsupplies.com\/products\/cefcejmptc?variant=47401585967334\"\u003eCEFCEJMPtC9100\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003eAnode Loading: 0.1 mg\/cm2\u003c\/p\u003e\n\u003cp\u003eCathode Loading: 0.5 mg\/cm2\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd style=\"width: 295.275px;\"\u003e\n\u003cp\u003ePt\/C (Johnson Matthey, 60 wt%)\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/echemsupplies.com\/products\/cefcejmptc?variant=47401585967334\"\u003eCEFCEJMPtC9100\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003eAnode Loading: 0.1 mg\/cm2\u003c\/p\u003e\n\u003cp\u003eCathode Loading: 0.5 mg\/cm2\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd style=\"width: 288px;\"\u003e\n\u003cp\u003ePt\/C (Johnson Matthey, 60 wt%)\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/echemsupplies.com\/products\/cefcejmptc?variant=47401585967334\"\u003eCEFCEJMPtC9100\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003eAnode Loading: 0.1 mg\/cm2\u003c\/p\u003e\n\u003cp\u003eCathode Loading: 0.5 mg\/cm2\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 148px;\"\u003e\u003cem\u003eProton-Exchange Membrane\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 281.725px;\"\u003e\n\u003cp\u003eGore M788.12\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/echemsupplies.com\/products\/cfbefcrcemg?variant=47402564255974\"\u003eCFBEFCRCEMGM788\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd style=\"width: 295.275px;\"\u003e\n\u003cp\u003eGore M788.12\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/echemsupplies.com\/products\/cfbefcrcemg?variant=47402564255974\"\u003eCFBEFCRCEMGM788\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd style=\"width: 288px;\"\u003e\n\u003cp\u003eGore M788.12\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/echemsupplies.com\/products\/cfbefcrcemg?variant=47402564255974\"\u003eCFBEFCRCEMGM788\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 148px;\"\u003e\u003cem\u003eFramework\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 281.725px;\"\u003e\n\u003cp\u003e-\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd style=\"width: 295.275px;\"\u003e\n\u003cp\u003eThickness: 45 um\u003c\/p\u003e\n\u003cp\u003eInner Size: 5cm*5cm\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd style=\"width: 288px;\"\u003e\n\u003cp\u003eThickness: 45 um\u003c\/p\u003e\n\u003cp\u003eInner Size: 5cm*5cm\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 148px;\"\u003e\u003cem\u003eGDL\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 281.725px;\"\u003e-\u003c\/td\u003e\n\u003ctd style=\"width: 295.275px;\"\u003e-\u003c\/td\u003e\n\u003ctd style=\"width: 288px;\"\u003e\n\u003cp\u003eThickness: 230 um\u003c\/p\u003e\n\u003cp\u003ePorosity: 605\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 148px;\"\u003e\u003cem\u003eMEA Effective Area\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 281.725px;\"\u003e5cm*5cm\u003c\/td\u003e\n\u003ctd style=\"width: 295.275px;\"\u003e5cm*5cm\u003c\/td\u003e\n\u003ctd style=\"width: 288px;\"\u003e5cm*5cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"SEN","offers":[{"title":"Three Layers","offer_id":47402820108518,"sku":"CHOPEMFCEMEA3","price":119.0,"currency_code":"USD","in_stock":true},{"title":"Five Layers","offer_id":47402820141286,"sku":"CHOPEMFCEMEA5","price":129.0,"currency_code":"USD","in_stock":true},{"title":"Seven Layers","offer_id":47402820174054,"sku":"CHOPEMFCEMEA7","price":159.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0774\/6591\/1526\/files\/CHOPEMFCEMEA_main.png?v=1772394557","url":"https:\/\/echemsupplies.com\/products\/chopemfcemea","provider":"EChem Supplies","version":"1.0","type":"link"}