Incredibly vast advance has been achieved in fuel cell technology regarding to catalyst efficiency, improvement of electrolyte conductivity and optimization of cell system. With breathtakingly accelerating progress, Proton Exchange Membrane Fuel Cells (PEMFC) is the most promising and most widely researched type of fuel cells . However, at present, durability is most critical matter delaying the commercialization of PEM fuel cell technology. Great efforts have been devoted to explore degradation mechanisms of fuel cell systems and components in order to improve the durability of fuel cells. Membrane Electrode Assembly (MEA) is commonly considered as the heart of cell system . Degradation of the noble metal catalysts in MEAs especially Three-Phase-Boundary (TPB) is a key factor directly influencing fuel cell durability. In this work, electrochemical degradation of Pt and Pt/Ru alloy were studied; tentative reaction mechanism in connection with degradation of perfluorinated sulfonic acid (PFSA) membrane was presented.
Main Research Area:
Advances in Polymer Electrolyte Membrane Fuel Cell Systems 2009