Inhibition of corrosion phenomena in fuel cells.

摘要

The present invention comprises: a first and second membrane electrode assembly (31, 32); and a metal bipolar plate (21) positioned between the first and second membrane electrode assemblies, A bipolar plate having first and second metal plates (41, 42) facing the first and second membrane electrode assemblies and secured to each other by a weld (211); A fuel cell stack comprising a membrane electrode assembly (31) and a gas dispersion layer (315) sandwiched and compressed between the bipolar plate (21). The contact pressure that the gas dispersion layer (315) receives from the bipolar plate in the weld is smaller than the average of the contact pressures. [Selection] Figure 2