活性涂层钛阳极阳极过程动力学研究  

STUDY ON ANODE PROCESS KINETICS OF THE ACTIVE COATED-TITANIUM ANODE

作　　者：张招贤[1] 黄斌[1] 李海涛[1] 

机构地区：[1]广州有色金属研究院

出　　处：《广东有色金属学报》1995年第1期66-70,共5页Journal of Guangdong Non-Ferrous Metals

摘　　要：用电化学研究方法对活性涂层钛阳极的阳极过程动力学进行了研究．测试介质为氯化镍溶液．用循环伏安法研究电极反应的可逆性，发现涂层钛阳极放氯反应不符合Ｎｅｒｎｓｔ反应（可逆反应）．测出了涂层钛阳极的极化曲线二用电子计算机对极化曲线数据进行线性回归处理，经过计算，涂层钛阳极放氯反应动力学参数为：α值０．２３９９Ｖ，Ｔａｆｅｌ斜率ｂ值０．０２６２Ｖ，交换电流密度值６．６７×１０－６Ａ·ｃｍ－２，传递系数βｎ２．５１２４，电流密度２５０Ａ·ｍ－２时氯超电位值为０．１９７９Ｖ，数据说明涂层钛阳极在放氯反应中电催化活性相当高．Anode process kinetics of the active coated-Ti anode has been studied.The measuring medium is nickel chloride solution.When the cyclic voltammetry is used to study the reversibility of the electrode reaction,it has been discovered that the chlorine evolution reaction of the coated Ti anode is not in accordance with Nernst reaction(reversible reaction).After the polarization curve being measured and handled with the linear regression analysis by computer, kinetic parameters of chlorine evolution on the coated Ti anode are calculated: α=0.239V, Tafel slope b=0.0262V,exchange current density A·cm-2,transmission coefficient and chlorine evolution overpotential under the current density 250A·m-2 is 0.197 9V.All the data show that the electrocatalytic activity in the chlorine evolution reaction on the coated Ti anode is very high.

关 键 词：活性涂层 钛阳极 阳极过程 动力学 电解冶金 

分 类 号：TF111.52[冶金工程—冶金物理化学]