For　practical　application　of　lithium-oxygen　batteries,　one　of　the　challenges　is　the　development　of　efficient　bifunctional　electrocatalysts　for　oxygen　reduction　reaction　(ORR)　and　oxygen　evolution　reaction　(OER)　in　cathode.　In　this　work,　perovskite　Sr0.9Y0.1CoO3-delta　nanorods　are　synthesized　by　an　electrospinning　method.　The　performance　of　the　Li-O-2　cell　with　Sr0.9Y0.1CoO3-delta　catalysts　is　better　than　that　of　the　cell　only　with　Super-P.　Furthermore,　modification　of　CoO　nanoparticles　on　the　cathode　can　provide　an　obviously　improved　electrochemical　performance　with　a　reduced　voltage　gap　(-80-140　mV),　which　is　ascribed　to　the　superior　catalytic　activity　of　CoO　nanoparticles　toward　OER.　All　of　these　results　demonstrate　that　the　perovskite　Sr0.9Y0.1CoO3-delta　is　an　efficient　bifunctional　electrocatalyst　for　lithium-oxygen　batteries,　and　the　incorporation　of　CoO　nanoparticles　is　an　effective　approach　for　improving　the　cathode　performance　as　well.