Separator plate for an electrochemical system and associated electrochemical system comprising a plurality of separator plates

A separator plate for an electrochemical system, comprising a first individual plate, wherein the first individual plate has, embossed on a first side, webs with web flanks that in sections delimit channels, wherein the channels are configured for guiding a first fluid, wherein the first individual plate has, between bases of the channels and the adjoining web flanks, first transition regions with a first embossing radius;

• wherein, on a second side of the first individual plate, the channels form protrusions and the webs form grooves for guiding a second fluid, wherein the first individual plate has, between bases of the grooves and adjoining flanks of the protrusions that form the grooves, second transition regions with a second embossing radius;
• wherein the first individual plate forms a plurality of stiffening structures that are arranged in the first transition regions and/or the second transition regions, wherein the stiffening structures form local bulges, wherein the bulges have a radius which is greater than the respective embossing radius and wherein the bulges extend over a height that is less than a web height.