FIELD: electrochemical fuel cells and their membrane-electrode assemblies. SUBSTANCE: electrochemical fuel cell has membrane-electrode assembly and adjacent layer of porous electricity conducting material having porosity of at least 50% with average pore size of minimum 35 mcm. Fuel-cell battery incorporates at least three cells arranged in tandem. Membrane-electrode assembly has ion-exchange membrane and at least two active layers. Fuel cell manufacturing process includes covering porous conducting sheet with conducting compound layer to form composite material and placing the latter in vicinity of membrane-electrode assembly. EFFECT: enhanced specific power characteristics of fuel cells. 78 cl, 14 dwg, 1 tbl, 9 ex
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