Patent ID: 7291419
Filing Date: 2007-11-06
Classification: C25B,H01M,Y02E

Abstract:
1. A method for making a membrane electrode assembly (MEA) for a fuel cell, said method comprising: providing a cathode side diffusion media layer; depositing a cathode side catalyst layer on the cathode side diffusion media layer; spraying an ionomer layer on the cathode side catalyst layer; providing an anode side diffusion media layer; depositing an anode side catalyst layer on the anode side diffusion media layer; spraying an ionomer layer on the anode side catalyst layer; positioning the diffusion media layers at opposite sides of a membrane so that the ionomer layers faces the membrane; and sandwiching the membrane between said ionomer coated diffusion media layers and incorporating the diffusion media layers and membrane into the fuel cell without heat-pressing said ionomer coated diffusion media layers to the membrane.