E.S. Kirk (Russia), H.-J. Jahn, and W. Schroer (Germany)
PEM FC, voltage drop, identication, classication.
One method of identication of fuel cell stack voltage drops and classication of reasons of the drops is consid ered in the paper. This method allows to dene the voltage drop as soon as possible after beginning of the drop. At the same time, using certain variables of the process, rea sons of the drop are recognized. The following reasons are taking into account: drying up of the membrane from the cathode side and from the anode side, air starvation, high CO concentration.
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