CONDUCTIVE FILM, GAS DIFFUSION LAYER FOR FUEL CELLS, CATALYST LAYER FOR FUEL CELLS, ELECTRODE FOR FUEL CELLS, MEMBRANE ELECTRODE ASSEMBLY FOR FUEL CELLS, AND FUEL CELL

摘要

The purpose of the present invention is to provide a conductive film which has excellent electrical conductivity and gas diffusibility, and which is useful as a material for forming a gas diffusion layer or a catalyst layer for electrodes of fuel cells, and the like. A conductive film according to the present invention contains: carbon nanotubes having an average diameter (Av) and a standard deviation (σ) of the diameters satisfying relational expression 0.60 > (3σ/Av) > 0.20; and a conductive carbon that is different from the carbon nanotubes. The mass ratio of the carbon nanotubes to the conductive carbon in the conductive film is from 1/99 to 99/1.