An electrolytic cell for producing gaseous hydrogen, comprising - at least one anion exchange membrane, - at least one first cell frame and at least one second cell frame, wherein each delimits an inner region which is provided for receiving an electrolyte and/or a membrane electrode unit, and which first and second cell frames (3, 4) are spaced apart from one another in the direction of a cell axis with respect to their respective defined frame planes, wherein the first cell frame abuts on a first flat side of the anion exchange membrane directly or indirectly in a liquid- and gas-sealing manner and the second cell frame abuts on an opposite second flat side of the anion exchange membrane directly or indirectly in a liquid- and gas-sealing manner, - at least one first flow channel and at least one second flow channel, which are each formed by fluidically communicating apertures in the first and second cell frame (3, 4) and in the anion exchange membrane and whose main direction extends parallel or substantially parallel to the cell axis, - wherein the first and second cell frame (3, 4) each comprise ∘ at least one outflow channel structure, which is fluidically coupled to the first flow channel and to the inner region of the respective cell frame (3, 4), and ∘ at least one inflow channel structure, which is fluidically coupled to the second flow channel and to the inner region of the respective cell frame (3, 4), - wherein the at least one first flow channel and the at least one second flow channel are spaced apart in the radial direction with respect to the cell axis and are positioned opposite one another with respect to the cell axis, - wherein the outflow channel structure and/or the inflow channel structure each comprises at least two partial channels (12a, 12c, 12d, 12f) extending at an angle to one another, which partial channels (12a, 12c, 12d, 12f) open directly into the at least one first flow channel and/or emerge directly from the at least one second flow channel, and - wherein each of the partial channels (12a, 12c, 12d, 12f) is fluidically connected to the inner region of the respective cell frame (3, 4), characterized in that the cross-section of the at least one first flow channel and/or of the at least one second flow channel of the electrolytic cell is configured to be increasingly tapering or increasingly enlarging along the cell axis. - at least one anion exchange membrane, - at least one first cell frame and at least one second cell frame, wherein each delimits an inner region which is provided for receiving an electrolyte and/or a membrane electrode unit, and which first and second cell frames (3, 4) are spaced apart from one another in the direction of a cell axis with respect to their respective defined frame planes, wherein the first cell frame abuts on a first flat side of the anion exchange membrane directly or indirectly in a liquid- and gas-sealing manner and the second cell frame abuts on an opposite second flat side of the anion exchange membrane directly or indirectly in a liquid- and gas-sealing manner, - at least one first flow channel and at least one second flow channel, which are each formed by fluidically communicating apertures in the first and second cell frame (3, 4) and in the anion exchange membrane and whose main direction extends parallel or substantially parallel to the cell axis, - wherein the first and second cell frame (3, 4) each comprise ∘ at least one outflow channel structure, which is fluidically coupled to the first flow channel and to the inner region of the respective cell frame (3, 4), and ∘ at least one inflow channel structure, which is fluidically coupled to the second flow channel and to the inner region of the respective cell frame (3, 4), ∘ at least one outflow channel structure, which is fluidically coupled to the first flow channel and to the inner region of the respective cell frame (3, 4), and ∘ at least one inflow channel structure, which is fluidically coupled to the second flow channel and to the inner region of the respective cell frame (3, 4), - wherein the at least one first flow channel and the at least one second flow channel are spaced apart in the radial direction with respect to the cell axis and are positioned opposite one another with respect to the cell axis, - wherein the outflow channel structure and/or the inflow channel structure each comprises at least two partial channels (12a, 12c, 12d, 12f) extending at an angle to one another, which partial channels (12a, 12c, 12d, 12f) open directly into the at least one first flow channel and/or emerge directly from the at least one second flow channel, and - wherein each of the partial channels (12a, 12c, 12d, 12f) is fluidically connected to the inner region of the respective cell frame (3, 4), characterized in that the cross-section of the at least one first flow channel and/or of the at least one second flow channel of the electrolytic cell is configured to be increasingly tapering or increasingly enlarging along the cell axis.