Abstract:The main problem arising at the cathode in proton exchange membrane fuel cells is the voltage drop due to the sluggish oxygen reduction reaction (ORR) kinetics. The limiting state-of-the-art operating potential is 0.7 V which is far from the equilibrium potential of 1.2 V [1]. Reducing the Pt loading without compromising fuel cell performance is an effective strategy to meet the cost requirements for fuel cell commercialization. One possibility is alloying Pt with other metals. Some Pt-early transition metal a… Show more
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