中文摘要：

采用钛片在氮气中700℃退火的方法,在钛片表面原位生成TiN薄膜,并以此为基体采用热分解法制备IrO2-Ta2O5涂层钛阳极。研究含TiN中间层IrO2-Ta2O5涂层钛阳极及传统IrO2-Ta2O5涂层钛阳极的开路电位、析氧行为、循环伏安和电化学阻抗等性能。结果表明：含TiN中间层IrO2-Ta2O5涂层钛阳极具有非连续状裂纹结构,且表面生长出大量IrO2纳米晶体,其电催化析氧性能优于传统IrO2-Ta2O5涂层钛阳极的电催化析氧性能;涂层烧结温度越低,电化学性能越好;当烧结温度低于500℃时,TiN中间层可以显著延长IrO2-Ta2O5涂层钛阳极的工作寿命。

英文摘要：

TiN film was prepared by heating treatment of titanium plates under N2 flow at 700℃, and lrO2-Ta2O5 coating was formed on the as-prepared TifFiN substrate by thermal decomposition method. The electrocatalytic properties of the IrO2-Ta2O5 /Ti coating anodes with and without TiN interlayer, such as the open-circuit potential, oxygen evolution, cyclic voltammetry and electrochemical impedance spectroscopy were investigated. The results show that the IrO2-Ta2O5/TiN/Ti anodes have discontinuity crack and abundant IrO2 nanocrystals on the surface, which results in better electrocatalytic properties than the normal lrO2-Ta2O/Ti anodes. The lower the sintering temperature for coating of IrO2-Ta205 layer is, the better electrochemical properties the lrO2-Ta2O5/TiN/Ti anodes have. The TiN film can increase the life time of coating anodes prepared at temperature lower than 500℃.