A fuel cell includes a stack of electrolyte membranes joined to one another to form an interior space and an exterior space. Fuel, such as hydrogen, is provided to the interior space. The electrolyte membranes are circular and joined to adjacent membranes at the outer perimeters to enclose the interior space. A stack of such membrane assemblies is provided on a shaft and is rotated within a housing to drive off byproduct water. The water is collected and recirculated by spraying over the fuel cell stack for cooling and hydration.