抄録
In the present study, a numerical method is suggested to solve the diffusion equations including the chemical reaction between oxygen and protons in the cathode catalyst layer of polymer electrolyte fuel cells (PEFCs). The concentration distributions of oxygen and the activated one, which depend on oxygen supply from a cathode pore and on output current density, are quantitatively investigated. The theoretical result indicates that local oxygen supply from the pores can increase the concentration of activated oxygen in the cathode catalyst layer and that power generation efficiency may be improved under the condition of suitable reaction fields of oxygen and protons.
