The effect of the current density and fuel cell temperature, humidified temperature of cathode and anode, porosity of porous diffusion layer on the results mentioned above are discussed.

This paper has main researches on the molecular diffusion in the process of CO2-oil displacing, carrying our deep experimental researches in PVT cell and porous medium.

Regarded fabric as homogeneous porous media, this paper arrives at the theoretical equation of fabric's diffusion moisture performances in different directions with the law of Hydromechanics.