It is described a membrane electrolysis cell comprising an anodic compartment and a cathodic compartment, wherein at least one of the two compartments contains a gas- diffusion electrode, and a planar porous element traversed by an electrolyte flow is interposed between membrane and gas-diffusion electrode. The electric current transmission to the gas-diffusion electrode is effected through a current distributor provided with elastic conductive protrusions pushing the electrode against the porous element.
