酸性氧化电位水涂层钛阳极的制备与性能

以RuO2-SnO2-TiO2为金属氧化物涂层,通过电极性能表征对涂层配方进行研究,分析Ru对酸性氧化电位水涂层钛阳极性能的影响,探索烧结温度和热处理时间对涂层晶粒大小及表面形貌的影响.试验结果表明,Ru是阳极具备电催化活性的主要组分,对涂层表面几何结构的形成、析氯反应催化活性的增强及电极寿命的提高,均起着主要作用.Ru的摩尔分数小于30%时,未出现单质金属钌和锐钛矿相TiO2,涂层晶型呈理想的金红石晶型;Ru的摩尔分数为25%时,电极涂层的强化寿命最长.综合考虑涂层阳极的性能与成本,Ru的最佳摩尔分数为25%.烧结温度对涂层晶粒大小及表面形貌影响显著,温度过低,涂层晶粒发育不完全;温度过高,涂层开裂且晶粒明显长大.

Preparation Process of Coating Ti Anode for Generating Electrolyzed Oxidizing Water and Its Effects

To reduce the preparation costs of coating Ti anode for generating electrolyzed oxidizing water (EOW),and improve its electrolysis efficiency and service life,RuO2SnO2TiO2 were used as metal oxide coating to analyze the effect of Ru on the performance of coating Ti anode.The effects of sintering temperature,heat treatment time on the properties of coating Ti anode were investigated.Results indicate that Ru processes electrocatalytic activity,and plays a vital part in the geometrical coating configuration,reinforcement of catalytic activity in chlorine dissociation reaction and the anode longevity.When Ru scales below 30%,there is no sigh of element ruthenium or anatase titanium dioxide,and the geometrical coating configuration is a perfect retile structure; When it is 25%,duration of anode is the longest.If taking the performance and cost of coating Ti anode into consideration,the most suitable mol percentage of Ru was 25%.Suitable sintering temperature was the key process means.The crystal grain growed incompletely in too low temperature,while the coating crack increased and the crystal grain growed too big in too high temperature.