SmBaCo2O5+δ　(SBCO)　was　synthesized　as　a　cathode　material　for　intermediate　temperature　solid　oxide　fuel　cells　(IT-SOFC)　via　the　EDTA-glycine　process.　The　structure　and　properties　of　the　material　were　measured　by　thermogravimetry-differential　thermal　analysis　(TG-DTA),　X-　ray　diffractometry　(XRD),　transmission　electron　microscopy　(TEM),　scanning　electron　microscopy　(SEM),　four-probe　DC　method,　and　AC　impedance　spectroscopy.　The　results　indicated　that　a　stable　perovskite　phase　was　formed　after　the　initial　powder　was　calcined　at　850　°C　for　5　h.　The　obtained　powders　revealed　fine　particles　with　good　dispersion　and　homogeneous　size　distribution.　SBCO　had　excellent　high　temperature　chemical　compatibility　with　Sm0.2Ce0.8O1.9　(SDC)　electrolyte.　The　electrical　conductivities　of　the　SBCO　reached　668-382　S{bullet　operator}cm-1　in　the　temperature　range　500-800　°C.　A　symmetric　half　cell　with　SDC　as　electrolyte　and　SBCO　as　electrode　was　characterized　by　good　three-phase　interface　bonding　and　high　cathode　catalytic　activity.　A　polarization　resistance　of　0.0688　Ω·cm2　was　achieved　at　750　°C　for　the　SBCO,　far　below　that　of　SBCO　synthesized　by　solid　state　reaction　method　(SSR),　with　an　activation　energy　(Ea)　of　122.21　kJ·mol-1.　©　Editorial　office　of　Acta　Physico-Chimica　Sinica.