Method for quantifying area proportions and areas of different contact areas of porous transmission layer and catalyst layer and application of method

The invention provides a method for quantifying area proportions and areas of different contact areas of a porous transmission layer and a catalyst layer and application of the method, and relates to the technical field of proton exchange membrane electrolytic cells. The quantification method disclosed by the invention comprises the following steps: measuring the surface of the CL to obtain a two-dimensional equal-height image and a three-dimensional equal-height image, customizing the CL into three parts, namely a non-contact area, a boundary area and a contact area, according to the three-dimensional equal-height image, and then obtaining the pixel proportions of the three parts according to the two-dimensional equal-height image; by adopting the method, the area proportions of different contact regions of PTL and CL are quantified, the obtained area proportion of the boundary region has a linear relation with the electrochemical performance of the proton exchange membrane electrolytic cell, and certain gui