▎ 摘　　要

Herein, nanostructured Pd electrocatalysts with boron-doped graphene (Pd/B-G) are prepared towards the formic acid oxidation. The catalysts are characterized by Raman spectroscopy, X-ray powder diffraction (XRD), trans-mission electron microscope (TEM), X-ray photoelectron spectroscopy (XPS) and inductively coupled plasma op-tical emission spectrometer (ICP-OES). The boron atoms have been successfully doped into graphene in the forms of BC3, BC2O and BCO2 to create abundant defect sites, which contributes to subsequent dispersion of Pd nano -particles (NPs). The TEM results confirm that more fine and homogeneous distribution of Pd NPs on B-G than those on native graphene. XPS-Pd3d band shows a little shift to lower binding energy and the higher metallic Pd content on Pd/B-G compared with to not doping boron (Pd/G) due to the electrons transfer from B-G to Pd. The elec-trochemical evaluation shows that Pd/B-G catalyst achieves much enhanced activity as well as improved catalytic stability compared to those of Pd/G and commercial Pd/C. The enhanced performance is not only ascribed to the higher dispersion the utilization efficiency of Pd, but also attributed to the electronic interaction between Pd NPs and B-G support. This co-effect also can facilitate the formation of metallic Pd and provide more active sites, as well as lowers d-band center of Pd and thus weakens the absorption of the COads on Pd.