High Performance Platinum on CarbonPlease click on the link below to figure out which is the best Catalyst for your application.If you can’t find the catalyst that you need on our website please do not hesitate to contact us.PEM = Polymer Electrolyte MembranePAFC = Phosphoric Acid Fuel CellHTPEM = High Temperature Polymer ElectrolyteMembrane DMFC = Direct Methanol Fuel CellSensorshttps://www.fuelcellearth.com/wp-content/uploads/converted_files/pdf/Catalyst_Chart.pdf