Electrochemical device and method for producing an electrochemical device

A method for producing an electrochemical device, comprising the following:

• forming a stack, which comprises a plurality of electrochemical units succeeding one another along a stack direction, wherein each electrochemical unit comprises a bipolar plate and an electrically insulating seal;
• and
• clamping the stack of electrochemical units by means of a clamping device;
• wherein at least one seal of at least one electrochemical unit in the pressed state protrudes laterally beyond a contour of the bipolar plate of the electrochemical unit in a direction of protrusion directed perpendicularly to the stack direction,
• wherein at least one outer contour of at least one bipolar plate is shielded from an outside space of the electrochemical device by at least one seal adjacent to the bipolar plate,
• wherein the seal, in at least one of the unpressed state and the pressed state, abuts with at least one contact region against two adjacent bipolar plates of the electrochemical device, wherein these two adjacent bipolar plates of the electrochemical device are electrically insulated from one another by the seal, and
• wherein the at least one seal is made of an elastomer material.