FIELD: chemistry.
SUBSTANCE: material comprises platinum in an amount of 0.01-2 wt % and heteropoly acid in an amount of 0.01-6 wt %. The proposed composite material is prepared by ion exchange introduction of platinum tetrammine (II) into the membrane followed by platinum reduction by sodium borohydride to metal particles, whereupon the membrane is converted to H+-form, aged in heteropolyacid hydroalcoholic solution and dried.
EFFECT: increase of specific proton conductivity and thermal stability of the membrane.
3 cl, 1 tbl
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