{"product_id":"cfbefccemf14100","title":"Cation-Exchange Membrane (Fumasep, F14100) for Flow Battery, Electrolzyer and Fuel Cell, CFBEFCCEMF14100","description":"\u003cp\u003eThe Fumasep F-14100 is a heavy-duty, perfluorinated cation-exchange membrane (PFSA) manufactured by Fumatech BWT. Within the Fumatech lineup, it serves as the \"extra-thick\" equivalent to Nafion™ 115 or 117, offering maximum durability and chemical barrier properties. The \"14\" in the name typically refers to its Equivalent Weight (EW) of approximately 1400 g\/eq, while the \"100\" denotes its nominal dry thickness of 100 µm\u003c\/p\u003e\n\u003cp\u003eBecause the F-14100 is significantly thicker than standard fuel cell membranes (which are often 20–30 µm), it is used in \"high-barrier\" electrochemical processes: (1) \u003cstrong\u003eDirect Methanol Fuel Cells (DMFC)\u003c\/strong\u003e: This is the primary use case. Thinner membranes allow methanol to \"crossover\" from the anode to the cathode, which wastes fuel and kills performance. The 100 µm thickness of the F-14100 acts as a powerful physical barrier to keep methanol where it belongs. (2) \u003cstrong\u003eProton-Exchange Membrane\u003c\/strong\u003e \u003cstrong\u003eWater Electrolysis (PEMWE)\u003c\/strong\u003e: Used in systems where gas purity is the top priority. The thickness ensures that Hydrogen and Oxygen do not mix across the membrane, even under high pressure. (3) \u003cstrong\u003eVanadium Redox Flow Batteries (VRFB)\u003c\/strong\u003e: Ideal for long-duration storage systems. It provides superior blocking of vanadium ions compared to thinner grades, leading to higher coulombic efficiency and slower self-discharge.\u003c\/p\u003e\n\u003ctable border=\"1\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003eCFBEFCCEMF14100 (C-FBEFC-CEM-F14100)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFunctional Group\u003c\/td\u003e\n\u003ctd\u003e Sulfonic Acid (–SO₃⁻)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReinforcement\u003c\/td\u003e\n\u003ctd\u003eNone\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cem\u003eThickness (um)\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd\u003e~100 um\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cem\u003eIon Exchange Capacity (meq\/g)\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd\u003e~0.56-0.84\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cem\u003eArea Resistance (Ω·cm² 25℃, H₂O)\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;0.25\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cem\u003eDimensional Swelling\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;16 wt%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cem\u003ePrimary Applications\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd\u003eDMFC, PEMWE, VFRB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cem\u003ePackage Grade\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd\u003e10cm*10cm\/pcs\/pack (other sheet size of 20cm*20cm 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\u003eUse Note\u003c\/strong\u003e:\u003c\/p\u003e\n\u003cp\u003eThe F-14100 is supplied in the H+ (Proton) form and is delivered as a dry, transparent foil. (1) \u003cstrong\u003eRemoval of Backing Foil\u003c\/strong\u003e: The membrane is delivered on a clear PET backing foil. You must carefully peel the membrane away from this plastic before assembly.\u003c\/p\u003e\n\u003cp\u003e(2) \u003cstrong\u003eActivation\u003c\/strong\u003e: While it can be used \"as-is,\" many protocols recommend a hot-acid soak to ensure maximum proton conductivity: (a) Soak in 5–10 wt% H2SO4 at 80°C for 2–4 hours. (b) Rinse multiple times with deionized water.\u003c\/p\u003e\n\u003cp\u003e(3) \u003cstrong\u003eHydration\u003c\/strong\u003e: Always pre-soak the membrane in your target electrolyte for 24 hours before final cutting. The 100 µm film will expand significantly when wet; if you cut it dry and install it, it will wrinkle and leak once it hydrates inside the cell.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eReference:\u003c\/strong\u003e\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/advanced.onlinelibrary.wiley.com\/doi\/full\/10.1002\/admt.202300720\"\u003eN. Weber, et al., Tailoring Pore Networks – Gas Diffusion Electrodes via Additive Manufacturing, Adv. Mater. Interfaces, 2023, 8, 2300720\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/pubs.acs.org\/doi\/abs\/10.1021\/acsami.1c03698\"\u003eX. Wei, et al., Efficient Electrocatalytic N2 Reduction on Three-Phase Interface Coupled in a Three-Compartment Flow Reactor for the Ambient NH3 Synthesis, ACS Appl. Mater. Interfaces 2021, 13, 18, 21411–21425\u003c\/a\u003e. \u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"CLKXZ","offers":[{"title":"Default Title","offer_id":47376517169382,"sku":"CFBEFCCEMF14100","price":189.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0774\/6591\/1526\/files\/CFBEFCCEMF14100_main.png?v=1771791707","url":"https:\/\/echemsupplies.com\/products\/cfbefccemf14100","provider":"EChem Supplies","version":"1.0","type":"link"}