Electrode Materials and Structures in Polymer Electrolyte and Direct Methanol Fuel Cells

摘要

Electrode compositions and structures found in polymer electrolyte fuel cells ( PEFCs ) and direct methanol fuel cells ( DMFCs ),are quite complex.The requirement of achieving and maintaining high power output at minimized cost,has presented a significant challenge in the development of electrodes based on precious metal catalysts.Maximizing catalyst utilization requires fabrication of "catalyst layers" of mixed electronic/ionic conductivity,which allow,at the same time,high rates of reactant access and product removal.