{"product_id":"cefcerhc","title":"Rhodium\/Carbon (Rh\/C, Premetek) as Electrocatalysts for Electrolyzer and Fuel Cell, 0.5 g\/bottle, CEFCERhC","description":"\u003cp\u003eRhodium on Carbon (Rh\/C) is a specialized noble metal electrocatalyst that bridges the gap between the high activity of platinum and the unique requirements of alkaline and chemical synthesis systems. While it shares many properties with Pt\/C, it is often selected for its superior water-splitting kinetics in non-acidic media and its resilience in complex organic reactions.\u003c\/p\u003e\n\u003cp\u003eWhile Platinum is the benchmark for the Hydrogen Evolution Reaction (HER) in acid, Rh\/C is often superior in alkaline water electrolysis. (1) \u003cstrong\u003eWater Dissociation (Volmer Step)\u003c\/strong\u003e: In alkaline media, the reaction must first \"break\" a water molecule (H2O) to get a proton. Rhodium has a much lower energy barrier for this water dissociation step than Platinum, making it significantly more efficient in basic solutions. (2) \u003cstrong\u003eOptimal Binding Energy\u003c\/strong\u003e: Rhodium sits at the top of the \"volcano plot\" for hydrogen adsorption, meaning it binds hydrogen atoms perfectly-strong enough to react, but weak enough to release as H2 gas. (3) Bimetallic Synergies: It is frequently alloyed with copper (Rh-Cu\/C) or nickel to create nanotubes or porous structures that outperform pure Pt\/C by optimizing the surface charge environment.\u003c\/p\u003e\n\u003cp\u003eIn fuel cells, Rh\/C is rarely used as a general-purpose cathode but is a powerful tool for specialized anodes. (1) \u003cstrong\u003eDirect Ammonia Fuel Cells (DAFC)\u003c\/strong\u003e: Rh\/C is one of the most active catalysts for the Ammonia Oxidation Reaction (AOR). It is uniquely selective toward producing nitrogen gas (N2) rather than harmful nitrogen oxides, making it the primary candidate for \"green ammonia\" power systems. (2) \u003cstrong\u003eCO-Tolerant Hydrogen Oxidation\u003c\/strong\u003e: Rh\/C is highly resistant to Carbon Monoxide (CO) poisoning. Like Ruthenium, it facilitates a bifunctional mechanism where it provides oxygen-containing species at lower voltages to \"clean\" CO off the catalyst surface, allowing the cell to run on reformed hydrogen. (3) \u003cstrong\u003eAlcohol Oxidation\u003c\/strong\u003e: It is used as a co-catalyst in Direct Ethanol or Methanol Fuel Cells to help break C-C bonds and manage reaction intermediates.\u003c\/p\u003e\n\u003cp\u003eIn CO2 Reduction (CO2RR) application field, Rhodium plays a key role in converting CO2 into valuable chemicals like methane (CH4) or acetic acid. It is particularly known for high selectivity—when exposed to light (photocatalysis), Rh nanoparticles can show a seven-fold increase in methane production compared to traditional thermal methods.\u003c\/p\u003e\n\u003ctable width=\"100%\" style=\"width: 89.3367%; height: 288.525px;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 40.275px;\"\u003e\n\u003ctd style=\"width: 28.1148%; height: 40.275px;\"\u003e\u003cem\u003ePart Number\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 71.7452%; height: 40.275px;\"\u003e\n\u003cp\u003e\u003cspan\u003eCEFCERhC\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 10px;\"\u003e\n\u003ctd style=\"width: 28.1148%; height: 10px;\"\u003e\u003cem\u003eRhodium\/Carbon Content\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 71.7452%; height: 10px;\"\u003e\n\u003cp\u003e20 wt% Rh, 80 wt% carbon black (Vulcan XC-72)\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 40.275px;\"\u003e\n\u003ctd style=\"width: 28.1148%; height: 40.275px;\"\u003e\u003cem\u003eMetal Surface Area\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 71.7452%; height: 40.275px;\"\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: 48.6px;\"\u003e\n\u003ctd style=\"width: 28.1148%; height: 48.6px;\"\u003e\u003cem\u003eCatalyst BET Surface Area:\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 71.7452%; height: 48.6px;\"\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: 36.4625px;\"\u003e\n\u003ctd style=\"width: 28.1148%; height: 36.4625px;\"\u003e\u003cem\u003eMetal Crystallite Size\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 71.7452%; height: 36.4625px;\"\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: 41.9125px;\"\u003e\n\u003ctd style=\"width: 28.1148%; height: 41.9125px;\"\u003e\u003cem\u003eCatalyst granule size D(100)\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 71.7452%; height: 41.9125px;\"\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: 38.1px;\"\u003e\n\u003ctd style=\"width: 28.1148%; height: 38.1px;\"\u003e\u003cem\u003eImpurities \u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 71.7452%; height: 38.1px;\"\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: 32.9px;\"\u003e\n\u003ctd style=\"width: 28.1148%; height: 32.9px;\"\u003e\u003cem\u003ePackage Size\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 71.7452%; height: 32.9px;\"\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 Rh\/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.9b00906\"\u003eH. Wang, et al. Rh and Rh Alloy Nanoparticles as Highly Active H2 Oxidation Catalysts for Alkaline Fuel Cells, ACS Catal. 2019, 9, 6, 5057–5062\u003c\/a\u003e.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003ca href=\"https:\/\/onlinelibrary.wiley.com\/doi\/10.1002\/anie.202509944\"\u003eZ. H. Yuan, et al. Architecture Engineering and Phase Engineering of Rhodium Metallene Co-Boost Nitrite-to-Ammonia Electroconversion, Angew Chem Int. Ed, 2025, 64, e202509944\u003c\/a\u003e. \u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"Premetek","offers":[{"title":"Default Title","offer_id":47355368505574,"sku":"CEFCERhC","price":299.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0774\/6591\/1526\/files\/CEFCERhC_main_renew.png?v=1772351736","url":"https:\/\/echemsupplies.com\/products\/cefcerhc","provider":"EChem Supplies","version":"1.0","type":"link"}