Patent ID: 8317986

Claim:
An electrochemical reactor comprising: a stack of a plurality of elementary electrolysis cells, each cell including a cathode, an anode, and an electrolyte provided between the cathode and the anode; an interconnection plate interposed between each anode of an elementary cell and a cathode of a following elementary cell, the interconnection plate being in electric contact with the anode and the cathode of the following elementary cell; at least one cathodic compartment and at least one anodic compartment for circulation of fluid to the cathode and the anode respectively; and the interconnection plate comprises at least one chamber for collecting at least one gas generated at the cathode of the following elementary cell separated from the cathodic compartment and the anodic compartment by first and second walls respectively, the first wall at least having a thickness allowing diffusion of the gas through the first wall from the cathodic compartment to the chamber.