Au/NiCo2O4/3D HPG (Three-Dimensional Hierarchical Porous Graphene) Composite as Electrocatalyst for Glycerol Electrooxidation in Alkaline Medium

Spinel oxide NiCo 2 O 4 firstly has been explored to promote activity of Au for glycerol electrooxidation, which is supported on a three-dimensional hierarchical porous graphene-like carbon (3D HPG) material. Addition NiCo 2 O 4 into the Au/HPG catalyst can significantly improve the catalytic performance for glycerol oxidation. When NiCo 2 O 4 is added to the Au/HPG, onset potential is more 108 mV negatively than that on the Au/HPG. Peak current density on the Au/NiCo 2 O 4 (wt 6:1)/HPG is 5.1 times as high as that on the Au(20wt%)/HPG. The Au/NiCo 2 O 4 in this work shows a great potential as electrocatalyst for glycerol electrooxidation in alkaline medium.