Brennstoffzelle deren Verwendung und Verfahren zum Herstellen einer Brennstoffzelle

摘要

A fuel cell that includes a blocking agent for preventing hydrogen and air from contacting bare membrane. This in turn prevents the reaction of air and hydrogen gases at outside edges of the catalyst layers. The blocking agent is deposited within diffusion media layers on one or both of the anode and cathode sides of the fuel cell. The blocking agent extends into the diffusion media layers far enough so that it is within outside edges of the catalyst layers. In one embodiment, the blocking agent is a thermoplastic polymer, such as PVDF, that flows into the diffusion media layers in a melted format, where it hardens.