{"product_id":"cefceptsnc","title":"Platinum-Tin (Pt-Sn, Premetek) Alloy on Carbon Black as Electrocatalysts for Electrolyzer and Fuel Cell, 0.5 g\/bottle, CEFCEPtSnC","description":"\u003cp\u003ePlatinum-Tin (Pt-Sn) electrocatalysts are the \"gold standard\" for a very specific branch of fuel cell technology: Direct Alcohol Fuel Cells (DAFC), particularly those running on ethanol. While Pt-Co and Pt-Ni are optimized for oxygen reduction (cathode), Pt-Sn is uniquely designed for the complex chemistry of breaking down liquid fuels at the anode.\u003c\/p\u003e\n\u003cp\u003eIn a Direct Ethanol Fuel Cell (DEFC), Pt-Sn is the most efficient anode catalyst available. (1) \u003cstrong\u003eBifunctional Mechanism\u003c\/strong\u003e: Unlike hydrogen (H2), ethanol (C2H5OH) is difficult to oxidize because it creates carbon monoxide (CO) intermediates that \"poison\" pure platinum. Sn acts as an oxophilic site—it attracts water molecules and breaks them into hydroxyl groups (-OH) at much lower voltages than Pt. These -OH groups then \"clean\" the CO off the neighboring Pt atoms, converting it to CO2. (2) \u003cstrong\u003eBreaking the C-C Bond\u003c\/strong\u003e: While it is notoriously difficult to break the carbon-carbon bond in ethanol at low temperatures, Pt-Sn (especially in a 3:1 atomic ratio) is the benchmark for achieving the highest power densities in these systems. (3) \u003cstrong\u003eElectronic Tuning\u003c\/strong\u003e: Alloying Sn into the Pt lattice expands the Pt-Pt distance (lattice expansion). This shift in the d-band center weakens the bond between Pt and poisonous intermediates, keeping the surface \"active\" for longer.\u003c\/p\u003e\n\u003ctable style=\"width: 100.036%; height: 309.212px;\" width=\"100%\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 46.6125px;\"\u003e\n\u003ctd style=\"width: 29.6656%; height: 46.6125px;\"\u003e\u003cem\u003ePart Number\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 34.8795%; height: 46.6125px;\"\u003e\n\u003cp\u003e\u003cspan\u003eCEFCEPtSn31C20\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd style=\"width: 34.8795%; height: 46.6125px;\"\u003e\n\u003cp\u003e\u003cspan\u003eCEFCEPtSn31C40\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 74.8px;\"\u003e\n\u003ctd style=\"width: 29.6656%; height: 74.8px;\"\u003e\u003cem\u003ePlatinum-Tin Content\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 34.8795%; height: 74.8px;\"\u003e\n\u003cp\u003e20 wt% Pt-Sn (3:1 ratio) (16.6 wt% Pt, 3.4 wt% Sn), 80 wt% carbon black\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd style=\"width: 34.8795%; height: 74.8px;\"\u003e\n\u003cp\u003e40 wt% Pt-Sn (3:1 ratio) (33.2 wt% Pt, 6.8 wt% Sn), 60 wt% carbon black\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 35.6px;\"\u003e\n\u003ctd style=\"width: 29.6656%; height: 35.6px;\"\u003e\u003cem\u003eMetal Surface Area\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 34.8795%; height: 35.6px;\"\u003e\n\u003cp\u003e\u003cspan\u003e~100 m2\/g\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd style=\"width: 34.8795%; height: 35.6px;\"\u003e\n\u003cp\u003e\u003cspan\u003e~60 m2\/g\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: 29.6656%; height: 35.6px;\"\u003e\u003cem\u003eCatalyst BET Surface Area:\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 34.8795%; height: 35.6px;\"\u003e\n\u003cp\u003e\u003cspan\u003e~200 m2\/g\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd style=\"width: 34.8795%; height: 35.6px;\"\u003e\n\u003cp\u003e\u003cspan\u003e~150 m2\/g\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: 29.6656%; height: 35.6px;\"\u003e\u003cem\u003eMetal Crystallite Size\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 34.8795%; height: 35.6px;\"\u003e\n\u003cp\u003e\u003cspan\u003e2-4 nm\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd style=\"width: 34.8795%; height: 35.6px;\"\u003e\n\u003cp\u003e\u003cspan\u003e4-6 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: 29.6656%; height: 39.2px;\"\u003e\u003cem\u003eCatalyst granule size D(100)\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 34.8795%; 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: 34.8795%; 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: 15.6125px;\"\u003e\n\u003ctd style=\"width: 29.6656%; height: 15.6125px;\"\u003e\u003cem\u003eImpurities \u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 34.8795%; height: 15.6125px;\"\u003e\n\u003cp\u003e\u003cspan\u003e≤ 500 ppm\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd style=\"width: 34.8795%; height: 15.6125px;\"\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: 29.6656%; height: 26.1875px;\"\u003e\u003cem\u003ePackage Size\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 34.8795%; height: 26.1875px;\"\u003e0.5 g\/bottle\u003c\/td\u003e\n\u003ctd style=\"width: 34.8795%; 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-Sn\/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:\/\/pubs.acs.org\/doi\/abs\/10.1021\/acscatal.8b03763\"\u003eY. Liu, et al. Electro-Oxidation of Ethanol Using Pt3Sn Alloy Nanoparticles, ACS Catal. 2018, 8, 11, 10931–10937\u003c\/a\u003e.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003ca href=\"https:\/\/chemistry-europe.onlinelibrary.wiley.com\/doi\/full\/10.1002\/cplu.202400151\"\u003eM. Distaso, et al. Design of PtSn Nanocatalysts for Fuel Cell Applications, ChemSusChem, 2024, 89, e202400151\u003c\/a\u003e. \u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"Premetek","offers":[{"title":"20 wt% Pt-Sn (3:1 ratio) on Vulcan XC-72","offer_id":47350501802214,"sku":"CEFCEPtSn31C20","price":259.0,"currency_code":"USD","in_stock":true},{"title":"40 wt% Pt-Sn (3:1 ratio) on Vulcan XC-72","offer_id":47350501834982,"sku":"CEFCEPtSn31C40","price":289.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0774\/6591\/1526\/files\/CEFCEPtSnC_main_renew.png?v=1772301081","url":"https:\/\/echemsupplies.com\/products\/cefceptsnc","provider":"EChem Supplies","version":"1.0","type":"link"}