The group has developed graphene supported dendritic PtNi bimetallic catalysts using Ni nanopaticles as the seeds and reducing agent. The as-made d-PtNi/G catalyst shows very large electrochemical active area (ECSA) and excellent electrochemical activity and stability toward methanol oxidation. Its electrochemical activity is much higher than those of the commercial Pt/C and PtRu/C catalysts for methanol electrooxidation. Compared with noble bimetallic (Pt-Au, Pt-Pd, Pd-Ru) nanodendritic catalysts, the PtNi nanodendrites are low in cost and simple in preparation.

Baomin LUO et al.,