The invention deals with an electrochemical system for compressing gases
and/or for producing gases by electrolysis, consisting of an
electrochemical compressor stack (1) having layering of several
electrochemical cells, which are separated from one another in each case
by bipolar plates (3; 3'), wherein the bipolar plates have openings for
media supply and media discharge (5a, 5b) for the electrochemical cells
and the electrochemical cell stack can be placed under mechanical
compressive strain in direction (6) of the layering. The bead
arrangements (7; 7') are resilient and are provided at least in some
regions to seal the openings (4, 5a, 5b) and/or an electrochemically
active region (10) of the electrochemical cells.