A co-extrusion print head, comprising: at least one separator inlet port; at least a first, second and third series of channels arranged to receive a separator material from the separator inlet port; at least one electrode inlet port; a fourth series of channels arranged to receive an electrode material from the electrode inlet port; a first merge portion connected to the first, second, third and fourth series of channels, the first merge portion positioned to receive and merge all the separator material into a separator flow and all the electrode material into an electrode flow; a second merge portion connected to the first merge portion, the second merge portion positioned to receive and merge the separator flows and the electrode flows; and an outlet port comprising a first set of nozzles (90, 92, 96) and a second set of nozzles, where the outlet port is connected to the second merge portion, wherein the outlet port is configured to distribute the separator material into the first set of nozzles (90, 92, 96) and the electrode material into the second set of nozzles, where the first set of nozzles (90, 92, 96) are arranged to the top of and to the sides of the second set of nozzles, where the first set of nozzles (90, 92, 96) has at least one nozzle that is arranged to a first side of the second set of nozzles and at least one nozzle that is arranged to a second side of the second set of nozzles, wherein the at least one nozzle in the first set of nozzles that is arranged to the first side of the second set of nozzles and the at least one nozzle in the first set of nozzles that is arranged to the second side of the second set of nozzles are larger than other nozzles (90, 96) in the first set of nozzles (90, 92, 96), and wherein the outlet port is configured to deposit a first portion of the separator material on top of the electrode material as a stack on a substrate and other portions of the separator material to the sides of the electrode material. at least one separator inlet port; at least a first, second and third series of channels arranged to receive a separator material from the separator inlet port; at least one electrode inlet port; a fourth series of channels arranged to receive an electrode material from the electrode inlet port; a first merge portion connected to the first, second, third and fourth series of channels, the first merge portion positioned to receive and merge all the separator material into a separator flow and all the electrode material into an electrode flow; a second merge portion connected to the first merge portion, the second merge portion positioned to receive and merge the separator flows and the electrode flows; and an outlet port comprising a first set of nozzles (90, 92, 96) and a second set of nozzles, where the outlet port is connected to the second merge portion, wherein the outlet port is configured to distribute the separator material into the first set of nozzles (90, 92, 96) and the electrode material into the second set of nozzles, where the first set of nozzles (90, 92, 96) are arranged to the top of and to the sides of the second set of nozzles, where the first set of nozzles (90, 92, 96) has at least one nozzle that is arranged to a first side of the second set of nozzles and at least one nozzle that is arranged to a second side of the second set of nozzles, wherein the at least one nozzle in the first set of nozzles that is arranged to the first side of the second set of nozzles and the at least one nozzle in the first set of nozzles that is arranged to the second side of the second set of nozzles are larger than other nozzles (90, 96) in the first set of nozzles (90, 92, 96), and wherein the outlet port is configured to deposit a first portion of the separator material on top of the electrode material as a stack on a substrate and other portions of the separator material to the sides of the electrode material.