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AssigneeDe Nora S.p.A.
InventorsEnrico Ramunni, Giampiero Fleba, Massimo Brambilla
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The present invention refers to an electrochemical cell or stack of cells comprising two end-plates (7), bipolar plates (1) made of metal or metal alloy, gas permeable metal distributors (2), metal current collectors(3), gasket frames (4) provided with channels for feeding the gaseous reactants and discharging the excess reactants and condensates, a couple of gas diffusion electrodes, (5), an ion-exchange membrane (6), wherein said current conductors provide for a highly distributed segmented contact area on the electrode surface without isolated peaks and have an extremely smooth surface without asperities and at the same time porous and permeable to the gas flow.
An electrochemical cell comprising two end-plates, bipolar plates adjacent to the end plates, permeable metal distributors, porous and permeable metal current collectors, gasket frames provided with means for feeding the gaseous reactants and removing the excess reactants and condensates, gas diffusion electrodes and an ion-exchange membrane, said metal current collectors having a distributed segmented contact area free of peaks and protrusions and smooth surface without asperites, at least one of said collectors is made of a reticulated tridimensional material the cells of which are completely collapsed after application of pressure between two planar plates, said at least one collector having thereby no residual deformability.
Dependencies are inferred from the claim text.