A fuel cell, in particular for an aeronautical application, comprising a central module comprising a plurality of cells for generating electricity, a first end plate and a second end plate, at least one of the end plates comprising at least one outlet pipe. The fuel cell comprises a pressure-regulating device fluidly connected to the outlet pipe, the pressure-regulating device comprising at least one arm fluidly connected to the outlet pipe, at least one member for opening/closing the arm, at least one member for measuring the pressure in the outlet pipe and at least one member for controlling the opening/closing member according to the measured pressure.