全固态Ag/AgCl参比电极电位稳定性的影响因素  

Factors Influencing Potential Stability of a Solid Ag/AgCl Reference Electrode

作　　者：辛永磊[1] 许立坤[1] 尹鹏飞[1] 王均涛[1] 李相波[1] 

机构地区：[1]中国船舶重工集团公司第七二五研究所海洋腐蚀与防护国防科技重点实验室,青岛266101

出　　处：《中国腐蚀与防护学报》2013年第3期231-234,共4页Journal of Chinese Society For Corrosion and Protection

摘　　要：采用热浸涂-电化学还原工艺制备得到全固态Ag/AgCl参比电极,并研究了Cl-浓度、温度、光照、水流流速及pH值对电极的影响。结果表明,制备的全固态Ag/AgCl参比电极Nernst响应和温度响应特性较好,温度系数较小;当溶液中有溶解氧存在时,光照会使电极表面生成Ag2O,使电极电位发生漂移;随海水流动速度的升高,Ag/AgCl参比电极的电极电位呈下降趋势,而pH值的变化对电极电位基本没有影响。The all-solid-state Ag/AgCl reference electrode was prepared by thermal-dip coating and electrochemical reduction method. Effects of chloride ion concentration, temperature, light, pH and seawater flow on the potential of the Ag/AgCl reference electrode were studied in this paper. The results showed that the as-prepared Ag/AgCl reference electrode had good Nemst response and temperature response characteristic. If dissolved oxygen existed in the solution, on the electrode surface Ag2O formed under sunshine and the electrode potential drifted. The flow rate of seawater had great effect on the electrode potential, however, the influence of pH value was minimal.

关 键 词：Ag/AgCl 参比电极 Nernst响应 温度 光照 

分 类 号：TG174[金属学及工艺—金属表面处理]