Abstract:
Binder composites for membrane electrode assemblies and membrane electrode assemblies employing the same are provided. The binder composition includes a solvent, a hyper-branched polymer and a polymer with high ion conductivity, wherein the hyper-branched polymer and the polymer with high conductivity of hydronium are distributed uniformly over the solvent, and the hyper-branched polymer has a DB (degree of branching) of more than 0.5.
Abstract:
Binder composites for membrane electrode assemblies and membrane electrode assemblies employing the same are provided. The binder composition includes a solvent, a hyper-branched polymer and a polymer with high ion conductivity, wherein the hyper-branched polymer and the polymer with high conductivity of hydronium are distributed uniformly over the solvent, and the hyper-branched polymer has a DB (degree of branching) of more than 0.5.
Abstract:
A single cell structure used in a fuel cell stack with metal separators, the single cell structure comprising: a cathode gas diffusion layer; an anode gas diffusion layer; a membrane electrode assembly, disposed between the cathode gas diffusion layer and the anode gas diffusion layer; a pair of first separators disposed outside the cathode gas diffusion layer and the anode gas diffusion layer, a first surface of the first separators being provided with a plurality of grooves and ribs thereon; a pair of second separators disposed outside the first separators to be assembled with the first separators, a first surface of the second separators being provided with a plurality of groove and ribs; and a pair of middle separators disposed outside the second separators to be assembled with the second separators.