PROTON-EXCHANGE HYBRID COMPOSITE MEMBRANE FOR SOLID POLYMER FUEL CELLS Russian patent published in 2019 - IPC H01M8/1018 H01M8/1025 H01M8/1041 

FIELD: manufacturing technology.

SUBSTANCE: invention relates to solid polymer fuel elements, specifically to composition and properties of proton-exchange membranes based on hybrid composite materials used in solid polymer fuel cells. Invention can be used to produce proton-conducting membranes for solid polymer fuel elements based on hybrid composite materials. According to the invention, the hybrid composite membrane consists of an organic copolymer and silicon-containing fragments, wherein the proton-conductive component used is a copolymer of sulphonated styrene and allyl glycidyl ether and oligosilsesquioxane blocks, with the following ratio of components, wt%: sulphonated copolymer of styrene and allyl glycidyl ether – 60.6–72.6; oligosilsesquioxane blocks – 28.4–39.4. Membranes obtained in this way are characterized by proton conductivity up to 4.21×10^-2 cm/cm at temperature 30 °C, exchange capacity of up to 3.5 mg-eq/g.

EFFECT: high proton conductivity and exchange capacity, their production from cheap and accessible raw components by simpler technology.

1 cl, 2 tbl, 11 ex