PEMFC uses a polymer membrane as an electrolyte, also known as a polymer electrolyte fuel cell, and is composed of a cathode, an anode and an external circuit.
Application of PEMFC in the field of electric vehicles and material handling is the most potential. Inside the fuel cell, protons pass through the exchange membrane from the anode to the cathode, thereby forming a loop with the electrons in the external circuit to supply power to the external load. The operating temperature of PEMFC is lower (generally lower than 100°C).
-Solid polymer electrolyte (SPE) water electrolysis technology has been promoted. The first practical SPE is a polymer exchange membrane also called as proton exchange membrane (PEM).
-The PEM water electrolysis cell adopts a zero-gap structure. As a result, the volume of the electrolytic cell is more compact and streamlined, reducing the electrolytic cell’s ohmic resistance and dramatically improving the electrolytic cell’s overall performance.
-The current operating density of PEM electrolytic cells is usually higher than 1A/cm2, which is at least 3 times that of alkaline water electrolytic cells.