工程用Ag/AgCl参比电极性能对比研究

摘要

使用热浸涂法和粉压法制备了工程用Ag/AgCl参比电极.电化学性能测试表明热浸涂法和粉压法制备的Ag/AgCl参比电极的电位稳定性都比较好,但热浸涂法制备的Ag/AgCl参比电极的耐极化性能优于粉压法制备的Ag/AgCl参比电极.热浸涂法和粉压法制备的Ag/AgCl参比电极的温度系数都比较小,温度响应特性较好.海水流速对热浸涂法和粉压法制备的Ag/AgCl参比电极的电位有明显影响,参比电极封装外壳可改善电极在流动海水中的电位稳定性能.%Ag/AgCl reference electrodes for engineering were prepared with powder press and thermal dip-coating method. The electrochemical test result showed that the potential stability of them were both good; the Ag/AgCl reference electrode prepared with thermal dip-coating method has smaller polarization resistance than the one prepared with powder press method; the temperature coefficient of Ag/AgCl reference electrodes prepared with thermal dip-coating and powder press method are both small. It showed that the relative flow velocity of seawater has obvious effect on the electrode potential; encapsulation of reference electrodes can- improve their potential stability in flowing seawater.