▎ 摘　　要

Reduced graphene oxide/[6,6]-phenyl-C61-butyric acid trimethylaminoethyl ester iodide hybrid composites (RGO-PCBANI) were used to support Pd nanoparticle to fabricate Pd/RGO-PCBANI electrocatalysts on electrode. The morphology and structure of the RGO-PCBANI and Pd/RGO-PCBANI were characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). Furthermore, the electrocatalytic performance of Pd/RGO-PCBANI towards ethanol oxidation was evaluated by using electrochemical methods such as cyclic voltammetry and chronoamperometry. The results showed that the prepared RGO-PCBANI (6:1) support displayed good dispersibility and could immobilize Pd nanoparticle with 5. 2 nm average size. Moreover, the fabricated Pd/RGO-PCBANI(6:1) catalyst exhibited best catalyst activity and stability. The mass current density reached 1288. 8 mA/mg. The good catalytic performance is attributed to highly conductive PCBANI's spacer function in the RGO-PCBANI composite support.