{"product_id":"chtpemfceptbcp","title":"Platinum Black Coated on Carbon Paper Electrode with PTFE Binder for High-Temperature Proton-Exchange Membrane Fuel Cell (HTPEMFC), CHTPEMFCEPtBCP","description":"\u003cp\u003ePlatinum Black coated electrodes are high-performance components specifically designed for environments where standard carbon-supported catalysts (Pt\/C) might fail due to corrosion or where extremely high power density is required. Unlike Pt\/C, which uses carbon as a scaffold, Platinum Black is composed of pure, finely divided metallic platinum.\u003c\/p\u003e\n\u003cp\u003eIn high-temperature PEM fuel cells (HT-PEMFCs), which typically operate between 150°C and 180°C, the combination of Platinum Black and a PTFE (Polytetrafluoroethylene) binder is a classic material choice for the catalyst layer (CL). Unlike low-temperature systems that use Nafion as a binder, HT-PEMFCs rely on phosphoric acid (H3PO4) for proton conduction. The PTFE binder serves as the \"scaffold\" and \"waterproofing\" agent that manages this acid.\u003c\/p\u003e\n\u003cp\u003eIn HT-PEMFCs, Platinum Black (unsupported Pt nanoparticles) is often preferred over carbon-supported platinum (Pt\/C) in specific high-load applications: (1) \u003cstrong\u003eCorrosion Resistance\u003c\/strong\u003e: At 160°C+ and high potentials, carbon supports can undergo electrochemical oxidation (carbon corrosion). Pt Black eliminates this risk. (2) \u003cstrong\u003eHigh Volumetric Activity\u003c\/strong\u003e: It allows for a thinner catalyst layer while maintaining high catalyst loading (often 2–4 mg\/cm2), which is necessary because H3PO4 poisons the Pt surface more than Nafion does.\u003c\/p\u003e\n\u003cp\u003ePTFE is the standard binder for HT-PEMFCs due to its extreme thermal stability (melting point ~ 327°C) and chemical inertness. (1) \u003cstrong\u003eHydrophobicity \u0026amp; Acid Management\u003c\/strong\u003e: PTFE creates \"dry\" hydrophobic channels. This is critical to prevent the liquid phosphoric acid from completely \"flooding\" the catalyst pores, which would block oxygen from reaching the Platinum. (2) \u003cstrong\u003eThree-Phase Boundary (TPB)\u003c\/strong\u003e: It helps establish the site where the reactant gas (Oxygen), the electrolyte (H3PO4), and the catalyst (Pt Black) meet. (3) \u003cstrong\u003eStructural Integrity\u003c\/strong\u003e: It binds the heavy Pt Black particles together, preventing the electrode from cracking under the thermal expansion cycles of the fuel cell.\u003c\/p\u003e\n\u003ctable width=\"100%\" style=\"width: 101.819%; height: 524.85px;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 35.6px;\"\u003e\n\u003ctd style=\"width: 30.2013%; height: 35.6px;\"\u003e\u003cem\u003ePart Number\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 69.4101%; height: 35.6px;\"\u003e\n\u003cp\u003e\u003cspan\u003eCHTPEMFCEPtBCP\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 35.6px;\"\u003e\n\u003ctd style=\"width: 30.2013%; height: 35.6px;\"\u003e\u003cem\u003eElectrode Active material\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 69.4101%; height: 35.6px;\"\u003e\n\u003cp\u003e\u003cspan\u003ePlatinum black wit fuel cell grade\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 162px;\"\u003e\n\u003ctd style=\"width: 30.2013%; height: 162px;\"\u003e\u003cem\u003eCarbon Paper Substrate\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 69.4101%; height: 162px;\"\u003e\n\u003cp\u003e\u003cspan\u003eThickness: 215 um\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eDensity: 70 g\/m2\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eWater Contact Angle (MPL side): \u0026gt; 130°\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eSubstrate PTFE Treatment: 5 wt%\u003c\/p\u003e\n\u003cp\u003eMicroporous layer is located at the catalyst side\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 35.6px;\"\u003e\n\u003ctd style=\"width: 30.2013%; height: 35.6px;\"\u003e\u003cem\u003eLoading Amount\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 69.4101%; height: 35.6px;\"\u003e\n\u003cp\u003e\u003cspan\u003e2 mg\/cm2\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 35.6px;\"\u003e\n\u003ctd style=\"width: 30.2013%; height: 35.6px;\"\u003e\u003cem\u003eElectrode Dimension\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 69.4101%; height: 35.6px;\"\u003e\n\u003cp\u003e\u003cspan\u003e(1) L 5cm * W 5cm\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e(2) L10cm * W10cm \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e(Other sizes, 20cm * 20cm, 30cm * 30cm, 40cm * 40cm can be supplied upon request)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 22.85px;\"\u003e\n\u003ctd style=\"width: 30.2013%; height: 22.85px;\"\u003e\u003cem\u003ePackage Size\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 69.4101%; height: 22.85px;\"\u003e1 pcs\/pack\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 platinum black electrodes in a 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:\/\/www.sciencedirect.com\/science\/article\/abs\/pii\/S0360319921004158\"\u003eS. H. Kwon, et al. Distribution characteristics of phosphoric acid and PTFE binder on Pt\/C surfaces in high-temperature polymer electrolyte membrane fuel cells: Molecular dynamics simulation approach, Int. J. Hydrogen Energy, 2021, 46, 17295-17305\u003c\/a\u003e.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003e\u003ca href=\"https:\/\/iopscience.iop.org\/article\/10.1149\/1.3573773\/meta\"\u003eJ. O. Park, et al. Role of Binders in High Temperature PEMFC Electrode, J. Electrochem. Soc., 2021, 158, B675\u003c\/a\u003e. \u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"CLKXZ","offers":[{"title":"5cm * 5cm","offer_id":47359419875558,"sku":"CHTPEMFCEPtBCP25","price":159.0,"currency_code":"USD","in_stock":true},{"title":"10cm * 10cm","offer_id":47359419908326,"sku":"CHTPEMFCEPtBCP100","price":399.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0774\/6591\/1526\/files\/CEFCCEPtB_main.png?v=1771129601","url":"https:\/\/echemsupplies.com\/products\/chtpemfceptbcp","provider":"EChem Supplies","version":"1.0","type":"link"}