Fig. 7From: Recent developments of nano-structured materials as the catalysts for oxygen reduction reaction(reprinted with permission from Ref. [58] Copyright @ 2016 Elsevier)a ORR activities of Pt–Ni/VXC, Pt–Ni/CNT, and Pt–Ni/graphene catalysts in O2 saturated 0.5 M H2SO4 with a scan rate of 5 mV/s at room temperature, b mass and c specific activities of three catalysts at 0.8 V in a 0.5 M H2SO4 electrolyteBack to article page