Process for pore formation in a polymer matrix

摘要

The process for formation of pores having controlled size, shape and distribution in a polymer matrix, comprises coating nanofibers (1) and/or silicon nanorods in a non-polymerized polymer matrix, suspension or a solution in a solvent, hardening the polymer matrix, and removing the nanofibers and/or silicon nanorods by chemical treatment. The growth of nanofibers and/or silicon nanorods is carried out on a support (3), which is removed between the hardening and chemical treatment steps. Independent claims are included for: (1) a process for fabricating an active layer for a proton exchange membrane (PEM) fuel cell; and (2) an active layer for a PEM fuel cell.