Carbon composite separeator plate for PEFC

Abstract

PEFC (Polymer electrolyte fuel cell) is expected for electric-vehicle, home co-generation system and mobile electric devices. PEFC has three main component of polymer membrane, Pt-electrode and separator plate. The separator plate is now the most expensive part, which consists of over 90% of PEFC cost. So, the cost-down of separator plate is the most important to be widely used. Now, carbon powder and resin composite material is adopted for PEFC separator plate, because of its electrical conductivity, anticorrosion properties and production cost. In this paper, the properties of carbon composite separator and new technology of cold pressing & after cure process, are discussed.