Abstract:

：GRQD-NiCo₂O₄ complexes were prepared by hydrothermal method,the microstructure was analyzed by XRD,SEM and TEM,and the electro-catalytic activity as DMFC anode catalysts was discussed.The microstructure analysis showed that the GRQD-NiCo₂O₄ complexes were spinel-type structure with NiCo₂O₄ single phase,and when the concentration of GRQD was higher than 0.25 g/mL,the surface morphology would change the state that GRQD and NiCo₂O₄ combined with each other.Electrochemical analysis showed that adding GRQD could effectively enhance the conductivity and electrochemical stability of NiCo₂O₄.When the concentration of GRQD was 0.25 g/mL,the current density of the sample obtained after 500 cycles was about 77.5 A/g,and the remaining current density was the largest（about 69.7%） compared with that after 5 cycles.The sample had the best cost performance as DMFC anode catalyst.

Key words: DMFC anodic catalysts, GRQD-NiCo₂O₄ complexes, microstructure, electro-catalytic activity