▎ 摘　　要

New, active and stable catalysts competitive to Pt catalysts are necessary for fuel cell development. Here, we present few-layered graphene-supported Pd, revealing a performance superior to Pt/C and Pd/C ORR (positive half-wave potential shift E-1/2 by 50 mV, approximately one order of magnitude higher area-and mass-normalized current densities, I-area, I-mass, after 2500 cycles). The catalyst preparation is easily scalable, simple, inexpensive and eco-friendly.