Corresponding Author

PAN Mu(panmu@whut.edu.cn)


It is an urgent need to reduce the Pt loading in electrode for practical fuel cell applications worldwide. Herein, we theoretically investigate the oxygen distribution, generated current, and minimum Pt loading of Pt/C electrode for practical applications based on kinetic model of oxygen reduction reaction. The results indicate that with increasing electrode effective thickness to 40 mm, serious concentration polarization is expected for Pt/C electrode. To generate a power density of 1.4 W•cm-2 (2.1A•cm-2 @0.67 V) for fuel cell, the cathode catalyst layer thickness in PEMFC should be as thin as 3 mm. The minimum Pt loading will reach 0.122 mg•cm-2, which can reduce the amount of Pt to 0.087 g•kW-1 in PEMFC cathode.

Graphical Abstract


Pt/C electrode, oxygen reduction, mass transport, Pt loading, fuel cell

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