二组元（RuO2-TiO2）及三组元（RuO2-SnO2-TiO2）Ti阳极涂层的微观组织对其电化学性能的影响

通过热分解法制备了二组元（RuO₂-TiO₂）和三组元（RuO₂-SnO₂-TiO₂）Ti阳极涂层，并通过SEM、XRD以及电化学工作站对其结构及性能进行测试。结果表明：在烘干温度130 ℃，热氧化温度500 ℃，烧结时间15 min，退火时间1 h的条件下，所制备的三组元（RuO₂-SnO₂-TiO₂）Ti阳极涂层性能较为优异，析氯电位为1.128 V，析氧电位为1.674 V。在二组元（RuO₂-TiO₂）涂层中加入Sn组元，可以减少贵金属Ru的使用量，降低钛阳极涂层的成本；而且所形成的SnO₂可提高涂层表面的电催化活性，降低电极的析氯电位、析氧电位，延长电极的工作寿命。

Effects of microstructures of Ti anode coating with two constituents and three constituent (RuO2-SnO2-TiO2) on the electrochemical properties

RuO₂-TiO₂ coating and RuO₂-SnO₂-TiO₂ coating of titanium(Ti) anode were obtained by thermal decomposition. The microstructure and the electrochemical performance of these Ti anode coating were examined by means of SEM, XRD and polarization curves. The results show that RuO₂-SnO₂-TiO₂ coating of titanium anode has high performance with 1.128 V and 1.674 V of tomography potential of chlorine and oxyen respectively at drying temperature of 130 ℃, sintering temperature of 500 ℃, holding time of 15 min and annealing time of 1 h. Adding Sn to RuO₂-TiO₂ coating of titanium anode will reduce Ru usage and decrease the costs for titanium anode. The presence of SnO₂ can improve catalytic activity, and reduce tomography chlorine and oxygen potential of coating surface for titanium anode, which will increase the lifetime of titanium anode.