FIELD: galvanochemistry.
SUBSTANCE: invention relates to an electrolysis cell containing an anode chamber (22) and a cathode chamber (21) separated from each other by an ion exchange membrane (23), wherein the electrolysis cell (10) has an anode (14), a gas diffusion electrode (24) and a cathode distributor (13) of current, wherein the anode (14), ion exchange membrane (23), gas diffusion electrode (24) and cathode distributor (13) of current are arranged in the specified sequence, respectively in direct contact, touching each other, and moreover, on the other side of the anode (14) and/or on the other side of the cathode distributor (13) of the current, there are spring retaining elements (30, 40) that exert clamping pressure on the anode (14) and/or on the cathode distributor (13) of the current. In this case, the spring retaining elements (30, 40) contain annular elements (31) or at least one tubular section (41), the axis of which is directed in the direction of height or in the longitudinal direction of the electrolysis cell (10), and which are located in the anode chamber (22) or in the cathode chamber (21), while they are compressed in the radial direction, while the retaining elements (30, 40) are subjected to at least partially plastic deformation in the electrolysis cell (10) along with elastic deformation and are elastic and plastic springy, and in the mounted state, the membrane (23) - electrode (14, 24) structure is pressed by means of elastic-plastic spring-loading of the annular elements (31) or tubular sections (41) in their radial direction, and the plastic deformation is the residual deformation of the material, in which the stress acting in the material exceeds the tensile limit or 0.2% tensile strength of the material. The invention also relates to two versions of the electrolyzer.
EFFECT: use of the invention makes it possible to effectively mechanically press the ion exchange membrane to the cathode with oxygen depolarization to create a configuration with a “zero gap”.
19 cl, 12 dwg
