铱涂覆量对IrO_2-Ta_2O_5钛阳极性能的影响  

Effect of Coating Quantity of Ir on Properties of IrO_2-Ta_2O_5 Titanium Anode

作　　者：张玉萍[1] 武志红[2] 鞠鹤[1] 蔡天晓[1] 方媛[1] 

机构地区：[1]西北有色金属研究院泰金公司,西安710016 [2]西安建筑科技大学材料学院,西安710061

出　　处：《表面技术》2010年第4期33-35,共3页Surface Technology

基　　金：国家科技人员服务企业资助项目(2009GJG00044)

摘　　要：测试了不同铱涂覆量的IrO2-Ta2O5钛阳极的表面形貌、强化寿命及析氧极化曲线。结果表明:铱涂覆量5 g/m2和10 g/m2的涂层形貌呈无规则粉状堆积;铱涂覆量达到20 g/m2时,涂层表面出现了枝状结构;铱涂覆量达到30 g/m2时,这种枝状结构已经很明显。IrO2-Ta2O5钛阳极涂层中铱涂覆量在5～30 g/m2范围内,随铱涂覆量的增加,阳极强化寿命增加得较快;当铱涂覆量超过30 g/m2,随铱涂覆量的增加,阳极强化寿命增幅减小。铱涂覆量对IrO2-Ta2O5钛阳极析氧的电催化活性影响不大。Surface morphologies,accelerated life,and polarization curves for oxygen evolution of IrO2-Ta2O5 titanium anode with different Ir coating were tested and analyzed.The results show that morphologies of the anode sarface coated 5 g/m2 and 10 g/m2 Ir are irregular powder accumulation,morphology of the anode surface coatd 20 g/m2 Ir exhibits branch structure,and morphology of the anode surface coatd 30 g/m2 Ir is obvious branch structure.Anode accelerated life increases fast with the content quantity of Ir increasing when it is in the range of 5～30 g/m2,anode accelerated life increases slowly with the coating quantity of Ir increasing when it exceeds 30 g/m2.The content quantity of Ir has little effect on electrocatalytic activity for oxygen evolutiont reaction of IrO2-Ta2O5 titaium anode.

关 键 词：IrO2-Ta2O5 铱涂覆量 钛阳极 

分 类 号：TG146.1[一般工业技术—材料科学与工程]