▎ 摘　　要

Graphene oxide (GO) nanosheets were exfoliated from Graphite Oxide in 1-Methyl-2-pyrrolidinone (NMP), and silver nitrate was added, then GO was charged by the silver ions. GO nanosheets were deposited on glassy carbon (GC) electrode by electrophoretic deposition (EPD), the silver ions were electrochemically reduced to silver particles, uniformly dispersed in the GO nanosheets. The modified electrodes morphology and microstructure were characterized by AFM, SEM, Raman, XRD and elemental mapping. The catalytic behavior during oxygen reduction on the modified electrodes was studied in alkaline medium. This research revealed that the onset potential of oxygen reduction on the GO+Ag electrode shifted to the positive direction by 228 mV compared with the GC electrode; the reduction current density on the GO+Ag electrode was found to be 7.564 mA center dot cm(-2), which is 3.4 times as that of the GC electrode. Using the LSV curves recorded at different rotation rates to construct Koutechy-Levich plots, the electron numbers is 3.3.