초록 ▼

A fuel cell stack includes a plurality of fuel cells, each of which includes a membrane electrode assembly and a water transport plate, or a fluid flow plate fabricated from graphite. This plate and optionally a separator plate are held in assembled relationship with one another and with the membran

A fuel cell stack includes a plurality of fuel cells, each of which includes a membrane electrode assembly and a water transport plate, or a fluid flow plate fabricated from graphite. This plate and optionally a separator plate are held in assembled relationship with one another and with the membrane electrode assemblies by a fluoroelastomeric adhesive/sealant that is also coated on the external edges of these components to provide a water-tight seal to better contain the coolant fluid in the form of water provided in the fuel cell stack.

대표청구항 ▼

[ Having thus described my invention, what is claimed is:] [1.] A fuel cell stack for generating electrical energy, wherein the cells in the stack are comprised of:a membrane electrode assembly including opposed catalyst layers, and a solid polymer proton exchange membrane between said catalyst laye

[ Having thus described my invention, what is claimed is:] [1.] A fuel cell stack for generating electrical energy, wherein the cells in the stack are comprised of:a membrane electrode assembly including opposed catalyst layers, and a solid polymer proton exchange membrane between said catalyst layers, including opposed anode and cathode support plates adjacent to the catalyst layers, each catalyst support plate having a marginal peripheral face defining a first sealing surface;a reactant flow-field plate or water transport plate adjacent to one said catalyst support plate and having a peripheral face defining a second sealing surface; anda sealant coating between first and second sealing surfaces, said sealant coating being an elastomeric adhesive for bonding said catalyst support plate to said flow-field plate or water transport plate.