Binary-oxide　IrO2-HfO2　coatings　were　prepared　by　a　thermal　decomposition　method　on　Ti.　Microstructure　of　different　coatings　was　examined　by　X-ray　diffraction　(XRD).　Cyclic　voltammetry　(CV)　was　employed　to　investigate　the　specific　capacitance,　charge-discharge　property,　＇inner＇/＇outer＇　activity　and　stability　of　the　electrodes.　The　effect　of　the　coatings　structure　on　the　electrodes　cycle　life　was　primarily　studied.　It　is　concluded　that　the　addition　of　Hf　in　the　coatings　can　improve　the　microstructure,　the　specific　capacitance　and　the　stability　of　the　electrodes,　and　the　50　mol%　HfO2-50　mol%　IrO2/Ti　electrode　exhibits　the　highest　activity　and　the　best　stability.