In　order　to　obtain　a　high　specific　capacitance,　Ti/Ir　0.4Sn　0.6O　2　electrodes　were　prepared　by　thermal　decomposition.　The　structure,　surface　morphology　and　electrochemical　properties　of　the　Ti/Ir　0.4Sn　0.6O　2　electrodes　were　investigated　by　X-ray　diffraction　(XRD),　thermal　analysis,　scanning　electron　microscopy　(SEM)　and　cyclic　voltammetry　(CV).　The　results　show　that　the　crystallization　temperature　of　Ti/Ir　0.4Sn　0.6O　2　electrode　material　is　up　to　360°C.　Many　small　white　particles　on　the　electrode　surface　which　are　mainly　composed　of　active　oxide　can　be　observed　when　it　is　annealed　at　320°C.　The　specific　capacitance　is　greatly　affected　by　annealing　temperature.　The　value　of　capacitance　is　small　and　its　reversibility　is　very　poor　when　the　annealing　temperature　is　280°C.　The　maximum　value　of　specific　capacitance　of　the　electrode　annealed　at　320°C　is　454　F/g.　The　specific　capacitance　increases　as　the　charge-discharge　cycle　count　is　increased.　After　9000　cycles,　the　specific　capacitance　just　starts　to　decrease.　Even　after　10000　cycles,　it　is　still　maintained　10%　higher　than　that　of　the　first　cycle　and　the　value　is　493　F/g.