Ag4Sn/C　catalyst　is　synthesized　by　a　solution　phase　reduction　method　assisted　with　ultrasonic　at　0　degrees　C.　The　as-prepared　catalyst　is　characterized　by　transmission　electron　microscopy　(TEM),　X-ray　diffraction　(XRD)　and　electrochemical　measurements.　The　Ag4Sn　intermetallic　electrocatalyst　displays　enhanced　electrocatalytic　activity　towards　oxygen　reduction　reaction　(ORR)　and　good　methanol-tolerant　property　in　alkaline　media.　The　ORR　catalyzed　by　Ag4Sn/C　proceeds　a　four-electron　pathway.　The　obtained　results　are　important　for　the　development　of　Ag-based　catalysts　in　alkaline　fuel　cells.　(C)　2013　Elsevier　B.V.　All　rights　reserved.