A fuel cell according to one embodiment includes a porous electrolyte support structure defining an array of microchannels, the microchannels including fuel and oxidant microchannels
fuel electrodes formed along some of the microchannels
and oxidant electrodes formed along other of the microchannels. A method of making a fuel cell according to one embodiment includes forming an array of walls defining microchannels therebetween using at least one of molding, stamping, extrusion, injection and electrodeposition
processing the walls to make the walls porous, thereby creating a porous electrolyte support structure
forming anode electrodes along some of the microchannels
and forming cathode electrodes along other of the microchannels. Additional embodiments are also disclosed.