▎ 摘　　要

Pd nanoparticles (PdNPs) with the diameter of similar to 3.2 nm were successfully confined within a robust three dimensional (3D) N-doped porous graphene (R3DNG) via a polyol-assisted reduction strategy. The as-obtained PdNPs/R3DNG composite was characterized by SEM, TEM, XRD and XPS, and was conducted as electrocatalyst for methanol oxidation in alkaline medium. The results showed that PdNPs/R3DNG featured the remarkable electrocatalytic activity (2.71 A mg(-1) Pd) and outstanding cyclic stability (66.5% forward peak current retention after 1000 cycles), which is even superior to the state-of-the-art Pt/C catalyst. The synergistic effect between the support of R3DNG and PdNPs is believed to be responsible for the outstanding electrocatalytic performance. (C) 2017 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.