The invention is a method of reducing catalyst dissolution in the cathode
of a membrane electrode assembly fuel cell, the method comprising the
steps of: (a) preparing a membrane electrode assembly comprising an
anode, a cathode and a polymer electrolyte membrane interposed between
the anode and the cathode; (b) assembling a fuel cell using the membrane
electrode assembly; (c) applying a fluid comprising an oxidant to the
cathode of the membrane electrode assembly; (d) applying a fluid
comprising a fuel to the anode of the membrane electrode assembly; and
(e) supplying a sufficient quantity of reducing agent to the cathode to
maintain the average open-circuit voltage of the cathode at less than
about 0.98 V.