Method of forming serial or parallel fuel cell units

A method of forming serial or parallel fuel cell units, the method comprising the steps of:

• (a). providing a cathode substrate, an anode substrate and at least a membrane electrode assembly (MEA);
• (b). forming at least a cathode current collection circuitry and at least a first contact on the same surface of the cathode substrate, wherein the cathode current collection circuitry is disposed corresponding to a cathode of the MEA, and the first contact electrically is connected to the cathode current collection circuitry, thereby a cathode current collection plate is fabricated;
• (c). forming at least an anode current collection circuitry and at least a second contact on the same surface of the anode substrate, wherein the anode current collection circuitry is disposed corresponding to an anode of the MEA, and the second contact is electrically connected to the anode current collection circuitry, thereby an anode current collection plate is fabricated;
• and
• (d). stacking the cathode current collection plate, the MEAs and the anode current collection plate from top to bottom, to form a single-piece structure, wherein each fuel cell unit comprises one said cathode current collection circuitry, one said MEA and one said anode current collection circuitry, and each said first contact respectively contacts with a corresponding said second contact, therefore the fuel cell unit is electrically connected to another fuel cell unit in serial and/or parallel.