{"product_id":"cefceptirc","title":"Platinum-Iridium (Pt-Ir, Premetek) Alloy on Carbon Black as Electrocatalysts for Electrolyzer and Fuel Cell, 0.5 g\/bottle, CEFCEPtIrC","description":"\u003cp\u003ePlatinum-Iridium (Pt-Ir) electrocatalysts are the \"bifunctional powerhouse\" of the electrochemical world. While other alloys are optimized for one specific task, Pt-Ir is uniquely designed to handle both power generation and gas production, making it the essential material for Unitized Regenerative Fuel Cells (URFCs). \u003c\/p\u003e\n\u003cp\u003eThe most critical application for Pt-Ir is in URFCs—devices that can act as both an electrolyzer (storing energy as H2) and a fuel cell (producing electricity) in a single stack. (1) \u003cstrong\u003eFuel Cell Mode (ORR)\u003c\/strong\u003e: Platinum is the primary driver for the Oxygen Reduction Reaction. Adding Iridium helps stabilize the Platinum against oxidation and dissolution during the high-voltage shifts that occur when switching modes. (2) \u003cstrong\u003eElectrolyzer Mode (OER)\u003c\/strong\u003e: Platinum alone is a poor catalyst for splitting water at the anode. Iridium (specifically IrOx formed on the surface) is the most stable and active catalyst for the Oxygen Evolution Reaction (OER) in acidic media. (3) \u003cstrong\u003eRound-Trip Efficiency\u003c\/strong\u003e: Pt-Ir alloys exhibit the best \"round-trip\" efficiency compared to Pt-Ru or Pt-Ni because they maintain high activity for both the 4-electron reduction and the 4-electron evolution of oxygen.\u003c\/p\u003e\n\u003cp\u003eIn dedicated PEM water electrolyzers, Pt-Ir is often used to solve durability problems: (1) \u003cstrong\u003eCathode (HER)\u003c\/strong\u003e: While Pt\/C is standard, Pt-Ir is sometimes used to enhance electrical conductivity and prevent catalyst agglomeration over long-term high-pressure operation. (2) \u003cstrong\u003eRecombination Catalyst\u003c\/strong\u003e: Pt-Ir can act as a recombination catalyst within the membrane to safely combine any \"crossover\" H2 and O2 gases back into water, preventing explosive mixtures from forming in the exhaust. (3)\u003cstrong\u003e Ti-PTL Protection\u003c\/strong\u003e: Pt-Ir is frequently coated onto the Titanium Porous Transport Layers (PTL) to prevent the titanium from forming a non-conductive oxide layer (passivation) under the high oxidative potentials of the anode.\u003c\/p\u003e\n\u003ctable width=\"100%\" style=\"width: 132.133%; height: 398.8px;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 46.6125px;\"\u003e\n\u003ctd style=\"width: 23.7707%; height: 46.6125px;\"\u003e\u003cem\u003ePart Number\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 26.0799%; height: 46.6125px;\"\u003e\n\u003cp\u003e\u003cspan\u003eCEFCEPtIr13C20\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd style=\"width: 24.8574%; height: 46.6125px;\"\u003e\n\u003cp\u003e\u003cspan\u003eCEFCEPtIr11C20\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd style=\"width: 24.8574%; height: 46.6125px;\"\u003e\n\u003cp\u003e\u003cspan\u003eCEFCEPtIr31C20\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 133.6px;\"\u003e\n\u003ctd style=\"width: 23.7707%; height: 133.6px;\"\u003e\u003cem\u003ePlatinum-Iridium Content\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 26.0799%; height: 133.6px;\"\u003e\n\u003cp\u003e20 wt% Pt-Ir (1:3 ratio) (5.1 wt% Pt, 14.9 wt% Ir), 80 wt% carbon black (Vulcan XC-72)\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd style=\"width: 24.8574%; height: 133.6px;\"\u003e\n\u003cp\u003e20 wt% Pt-Ir (1:1 ratio) (10.1 wt% Pt, 9.9 wt% Ir), 80 wt% carbon black (Vulcan XC-72)\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd style=\"width: 24.8574%; height: 133.6px;\"\u003e\n\u003cp\u003e20 wt% Pt-Ir (3:1 ratio) (15.1 wt% Pt, 4.9 wt% Ir), 80 wt% carbon black (Vulcan XC-72)\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.2px;\"\u003e\n\u003ctd style=\"width: 23.7707%; height: 39.2px;\"\u003e\u003cem\u003eMetal Surface Area\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 26.0799%; height: 39.2px;\"\u003e\n\u003cp\u003e\u003cspan\u003e~100 m2\/g\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd style=\"width: 24.8574%; height: 39.2px;\"\u003e\n\u003cp\u003e\u003cspan\u003e~120 m2\/g\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd style=\"width: 24.8574%; height: 39.2px;\"\u003e\n\u003cp\u003e\u003cspan\u003e~100 m2\/g\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.2px;\"\u003e\n\u003ctd style=\"width: 23.7707%; height: 39.2px;\"\u003e\u003cem\u003eCatalyst BET Surface Area:\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 26.0799%; height: 39.2px;\"\u003e\n\u003cp\u003e\u003cspan\u003e~200 m2\/g\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd style=\"width: 24.8574%; height: 39.2px;\"\u003e\n\u003cp\u003e\u003cspan\u003e~200 m2\/g\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd style=\"width: 24.8574%; height: 39.2px;\"\u003e\n\u003cp\u003e\u003cspan\u003e~200 m2\/g\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.2px;\"\u003e\n\u003ctd style=\"width: 23.7707%; height: 39.2px;\"\u003e\u003cem\u003eMetal Crystallite Size\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 26.0799%; height: 39.2px;\"\u003e\n\u003cp\u003e\u003cspan\u003e2-4 nm\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd style=\"width: 24.8574%; height: 39.2px;\"\u003e\n\u003cp\u003e\u003cspan\u003e1-3 nm\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd style=\"width: 24.8574%; height: 39.2px;\"\u003e\n\u003cp\u003e\u003cspan\u003e2-4 nm\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.2px;\"\u003e\n\u003ctd style=\"width: 23.7707%; height: 39.2px;\"\u003e\u003cem\u003eCatalyst granule size D(100)\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 26.0799%; height: 39.2px;\"\u003e\n\u003cp\u003e\u003cspan\u003e≤ 75 µm\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd style=\"width: 24.8574%; height: 39.2px;\"\u003e\n\u003cp\u003e\u003cspan\u003e≤ 75 µm\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd style=\"width: 24.8574%; height: 39.2px;\"\u003e\n\u003cp\u003e\u003cspan\u003e≤ 75 µm\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: 23.7707%; height: 35.6px;\"\u003e\u003cem\u003eImpurities \u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 26.0799%; height: 35.6px;\"\u003e\n\u003cp\u003e\u003cspan\u003e≤ 500 ppm\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd style=\"width: 24.8574%; height: 35.6px;\"\u003e\n\u003cp\u003e\u003cspan\u003e≤ 500 ppm\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd style=\"width: 24.8574%; height: 35.6px;\"\u003e\n\u003cp\u003e\u003cspan\u003e≤ 500 ppm\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 26.1875px;\"\u003e\n\u003ctd style=\"width: 23.7707%; height: 26.1875px;\"\u003e\u003cem\u003ePackage Size\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 26.0799%; height: 26.1875px;\"\u003e0.5 g\/bottle\u003c\/td\u003e\n\u003ctd style=\"width: 24.8574%; height: 26.1875px;\"\u003e0.5 g\/bottle\u003c\/td\u003e\n\u003ctd style=\"width: 24.8574%; height: 26.1875px;\"\u003e0.5 g\/bottle\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 Pt-Ir\/C powder 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\/S0378775314005989\"\u003eM. Zeng, et al. Remarkable durability of Pt–Ir alloy catalysts supported on graphitic carbon nanocages, J. Power Sources, 2014, 264, 272-281\u003c\/a\u003e.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003ca href=\"https:\/\/iopscience.iop.org\/article\/10.1149\/2.050401jes\/meta\"\u003eR. E. Fuentes, et al. Pt-Ir\/TiC Electrocatalysts for PEM Fuel Cell\/Electrolyzer Process, J. Electrochem. Soc., 2014, 161, F77\u003c\/a\u003e. \u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"Premetek","offers":[{"title":"20 wt% Pt-Ir (1:3 ratio) on Vulcan XC-72","offer_id":47351515807974,"sku":"CEFCEPtIr13C20","price":289.0,"currency_code":"USD","in_stock":true},{"title":"20 wt% Pt-Ir (1:1 ratio) on Vulcan XC-72","offer_id":47351515840742,"sku":"CEFCEPtIr11C20","price":299.0,"currency_code":"USD","in_stock":true},{"title":"20 wt% Pt-Ir (3:1 ratio) on Vulcan XC-72","offer_id":47351515873510,"sku":"CEFCEPtIr31C20","price":289.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0774\/6591\/1526\/files\/CEFCEPtIrC_main_renew.png?v=1772268591","url":"https:\/\/echemsupplies.com\/products\/cefceptirc","provider":"EChem Supplies","version":"1.0","type":"link"}