Performance of a Pore-Filling Electrolyte Membrane in Hydrogen-Oxygen PEFC

While operating in an polymer electrolyte fuel cell (PEFC), a membrane electrode assembly containing a pore-filling electrolyte membrane composed of a porous cross-linked polyethylene (CLPE) substrate filled with poly(acrylamide tert -butyl sulfonic acid) (PATBS) showed excellent fuel cell performance at ambient pressure and a relatively low operating temperature The conductance during operation was also determined. The CLPE-PATBS membrane showed a relatively high open-circuit voltage of despite the thinness of the membrane, indicating that the membrane suppresses fuel crossover.