A　ternary　nanostructure,　composed　of　graphite　oxide　(GO),　MnO2　and　poly[(2,5-di-phenyl-1,3,4-oxadiazole)-4-diylvinylene-alt-3,6-(N-butyl-carbazolenevinylene)]　(POXA-CAR),　is　fabricated　via　a　simple　two-step　method.　The　as-prepared　composite　is　characterised　by　X-ray　diffraction,　X-ray　photoelectron　spectroscopy,　field-emission　scanning　electron　microscopy　and　cyclic　voltammetry.　The　specific　capacitance　of　the　composite　electrode　reached　310　F/g　at　a　charging　current　of　2.5　mA,　which　is　attributed　to　the　synergistic　effects　from　each　component.　GO　has　a　large　surface　area　and　great　mechanical　properties.　The　conducting　polymer　provides　electron　transport　path　and　partakes　of　the　charge　storage　process.　This　Letter　suggests　that　the　ternary　composite　is　a　promising　candidate　for　high-performance　energy　storage　devices.