Electro catalyst Platinum on High Durable Carbon fuel cellFuel Cell Grade Electro catalyst with 5 Percent Platinum on High Durable Carbon. 5% Platinum on High Durable Carbon is designed for Polymer Electrolyte Membrane (PEM) and Phosphoric Acid Fuel Cell applications for both anodes and cathodes. However 5% Platinum on High Durable Carbon have number of other different applications. 5% Platinum on High Durable Carbon is usually available in stock and can be shipped within one business day after the receipt