Fuel cell membranes and crossover prevention

摘要: A membrane electrode assembly for use with a direct organic fuel cell containing formic acid includes solid polymer electrolyte having first and second surfaces, an anode on the surface cathode electrically linked to anode. The has thickness t: t ≥ n f ⁢ D C K j c where is concentration over anode, effective diffusivity of in electrolyte, equilibrium constant partition coefficient into membrane, ℑ Faraday's number electrons released when 1 molecule oxidized, empirically determined crossover rate above which does not operate.