Ionomeric membranes comprising (per)fluorinated, semicrystalline or amorphous, ionomeric polymers, having equivalent weight (EW) from 380 g/eq to 1,800 g/eq, which used in fuel cells, under the following conditions: membrane thickness 50 µm assembled betw...

The present invention refers to a method of obtaining perfluorocarbonate polymers containing functional fluorosulphonyl groups and that have structural formula (I) that consists in carrying out copolymerization between tetrafluoroethylene and a perfluorovi...