MULTILAYER STRUCTURE INTEGRATING CARBON NANOTUBE MATS AS A DIFFUSION LAYER IN PEMFC

摘要

The present invention relates to a multilayer structure (10) useful as a composite diffusion layer in a proton exchange membrane fuel cell (PEMFC) comprising at least one carbon nanotube (CNT) mat (1) of smaller unit diameter or equal to 20 nm, defining at least one face of said structure, said carbon nanotube mat (1) being superimposed on a support based on carbon fibers. It also relates to a method for preparing such a multilayer structure, and to its use for an electrode of a PEMFC.