Separator plate for an electrochemical system and electrochemical system

A separator plate for an electrochemical system,

• wherein the separator plate has, at least on a first side, a plurality of channels through which flow can pass in a longitudinal direction of the channel and which are each separated from one another by a web,
• wherein the channels each have a plurality of regions with reduced flow cross-section, and
• wherein at least some of the regions with reduced flow cross-section extend between a first channel side wall and a second channel side wall and rise, at least in sections, towards one of the first and second channel side walls.

A separator plate for an electrolyzer,

• wherein the separator plate has, on at least a first side, a plurality of channels through which flow can pass in a longitudinal direction of the channel and which are each separated from one another by a web,
• wherein the channels each have a plurality of regions with reduced flow cross-section, and
• wherein at least some of the webs have at least one channel-connecting region and the at least one channel-connecting region has a first mouth region in which it opens into a first of the channels separated by the web, and a second mouth region in which it opens into a second of the channels separated by the web.