{"product_id":"chgdleanptfe","title":"PTFE Nanopowder (50-500 nm, Dupont) as Electrode Additive for Hydrophobic Gas Diffusion Layer (GDL), CHGDLEANPTFE","description":"\u003cp\u003eIn the fabrication of Gas Diffusion Layers (GDL) for fuel cells and electrolyzers, Polytetrafluoroethylene (PTFE) nanopowder serves as the primary hydrophobic agent. Its role is to balance the \"competing\" transport of gases (reactants) and liquid water (products) within the porous structure of the carbon paper or cloth.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHydrophobicity and Water Management\u003c\/strong\u003e: The GDL must remain \"dry\" enough to allow gases (H2, O2, or CO2) to reach the catalyst layer. PTFE nanopowder coats the carbon fibers, increasing the contact angle of water. This creates hydrophobic channels that prevent the GDL from \"flooding\" (saturating with liquid water), which would otherwise block gas transport and \"choke\" the cell. By tuning the PTFE content, manufacturers control the capillary pressure within the pores, actively pushing produced water out toward the flow channels.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBinding and Structural Integrity\u003c\/strong\u003e: PTFE acts as the \"glue\" for the Microporous Layer (MPL)—the thin coating of carbon black applied to the GDL base. During the high-shear mixing or \"calendering\" process, PTFE nanopowder undergoes fibrillation, where the particles stretch into microscopic \"cobwebs\" or fibrils. These fibrils lock the carbon black particles together, creating a robust, flexible, and crack-resistant film.\u003c\/p\u003e\n\u003ctable width=\"100%\" style=\"width: 100%; height: 373px;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 35.6px;\"\u003e\n\u003ctd style=\"width: 33.6331%; height: 35.6px;\"\u003e\u003cem\u003ePart Number\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 66.0072%; height: 35.6px;\"\u003e\n\u003cp\u003e\u003cspan\u003eCHGDLEANPTFE (C-HGDL-EA-NPTFE)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 55.2px;\"\u003e\n\u003ctd style=\"width: 33.6331%; height: 55.2px;\"\u003e\u003cem\u003eAppearance\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 66.0072%; height: 55.2px;\"\u003e\n\u003cp\u003e\u003cspan\u003eWhite fine powder\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 33.6331%;\"\u003e\u003cem\u003eDensity\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 66.0072%;\"\u003e\n\u003cp\u003e\u003cspan\u003e2.14-2.20 g\/cm3\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 33.6331%;\"\u003e\u003cem\u003eMelting Point\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 66.0072%;\"\u003e\n\u003cp\u003e\u003cspan\u003e327 °C\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 33.6331%;\"\u003e\u003cem\u003eThermal Deformation Temperature\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 66.0072%;\"\u003e\n\u003cp\u003e\u003cspan\u003e120-130 °C\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 33.6331%;\"\u003e\u003cem\u003eTensile Strength\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 66.0072%;\"\u003e\n\u003cp\u003e\u003cspan\u003e20-35 MPa\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 33.6331%;\"\u003e\u003cem\u003eCompression Strength\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 66.0072%;\"\u003e\n\u003cp\u003e\u003cspan\u003e12-15 MPa\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 33.6331%;\"\u003e\u003cem\u003eContinuous Operation Temperature\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 66.0072%;\"\u003e\n\u003cp\u003e\u003cspan\u003eFrom -200°C to +260 °C\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 33.6331%; height: 19.6px;\"\u003e\u003cem\u003ePackage Size\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 66.0072%; height: 19.6px;\"\u003e\u003cspan\u003e10 or 20 g\/bottle (100g, 200g, and 500g also can be supplied upon request)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eNotes\u003c\/strong\u003e: Please try to store the PTFE nanopowder in the dry place. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eReferences\u003c\/strong\u003e: \u003c\/span\u003e\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003e\u003cspan\u003e\u003ca href=\"https:\/\/pubs.acs.org\/doi\/abs\/10.1021\/acsenergylett.2c01555\"\u003eY. Wu, et al. Mitigating Electrolyte Flooding for Electrochemical CO2 Reduction via Infiltration of Hydrophobic Particles in a Gas Diffusion Layer, ACS Energy Lett. 2022, 7, 9, 2884–2892\u003c\/a\u003e.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003ca href=\"https:\/\/www.sciencedirect.com\/science\/article\/abs\/pii\/S0378775322010758\"\u003eE, M. Can, et al. Superhydrophobic fluorinated carbon powders for improved water management in hydrogen fuel cells, J. Power Sources, 2022, 548, 232098\u003c\/a\u003e. \u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003e\u003ca href=\"https:\/\/www.sciencedirect.com\/science\/article\/abs\/pii\/S0378775325003295\"\u003eJ. Lee. Hoang, et al., Directly integrated membrane-electrode assembly with a macroporous-carbon functional layer for the flexible operation of fuel cells under varying humidity, J. Power Sources, 2025. 636, 236493\u003c\/a\u003e.\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"SJF","offers":[{"title":"50 nm (10 g)","offer_id":47386106167526,"sku":"CHGDLEANPTFE50","price":79.0,"currency_code":"USD","in_stock":true},{"title":"100 nm (10 g)","offer_id":47386106200294,"sku":"CHGDLEANPTFE100","price":59.0,"currency_code":"USD","in_stock":true},{"title":"200 nm (20 g)","offer_id":47386106233062,"sku":"CHGDLEANPTFE200","price":39.0,"currency_code":"USD","in_stock":true},{"title":"500 nm (20 g)","offer_id":47386106265830,"sku":"CHGDLEANPTFE500","price":39.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0774\/6591\/1526\/files\/CHGDLEANPTFE_main.png?v=1772039884","url":"https:\/\/echemsupplies.com\/products\/chgdleanptfe","provider":"EChem Supplies","version":"1.0","type":"link"}