碳酸氢钠改性Ag/AgCl海洋电场电极的研制及其性能  

Preparation and Properties of Modified Ag/AgCl Marine Electric Field Electrode with Sodium Bicarbonate

作　　者：李红霞[1] 宋玉苏[1] 肖海舰 LI Hongxia;SONG Yusu;XIAO Haijian(Department of Basic Courses,Naval University of Engineering,Wuhan 430033,Hubei,China)

机构地区：[1]海军工程大学基础部,湖北武汉430033

出　　处：《兵工学报》2022年第1期226-232,共7页Acta Armamentarii

基　　金：海军工程大学自主研发项目(2022年)。

摘　　要：为提高Ag/AgCl电极性能,通过在粉压型Ag/AgCl电极中添加一定含量的碳酸氢钠(NaHCO_(3))发泡剂,利用电极在高温烧结成型过程中NaHCO_(3)会发生分解反应产生CO_(2)气体的性质,研制出高孔隙率的Ag/AgCl新型海洋电场电极。进一步基于综合热分析和称重法测试结果,研究NaHCO_(3)-Ag/AgCl电极的制备工艺参数,初步形成一套较完整的NaHCO_(3)-Ag/AgCl粉压型电极制备方法。NaHCO_(3)-Ag/AgCl电极的电化学性能与探测性能测试结果表明,添加NaHCO_(3)后Ag/AgCl电极的交换电流密度提高,极差稳定时间明显降低、极差变小,自噪声降低,说明所研制电极的电化学性能与探测性能较添加NaHCO_(3)之前均有所提高,相关高孔隙率海洋电场电极制备方法具有较好的可行性与应用前景。An Ag/AgCl marine electric field electrode with high porosity was developed by adding a certain amount of sodium bicarbonate(NaHCO_(3)) foaming agent to the powder pressed Ag/AgCl electrode and utilizing the property that sodium bicarbonate decomposes and produces CO_(2) gas in the process of sintering at high temperature.The preparation process parameters of NaHCO_(3)-Ag/AgCl electrode were studied from the analyzed and measured results of TG/DSC thermal analysis method and weighing method,and a complete set of preparation method of NaHCO_(3)-Ag/AgCl powder pressed electrode was preliminarily formed.The measured results of electrochemical and detection performances of NaHCO_(3)-Ag/AgCl electrode show that the exchange current density of the electrode is increased,the range stabiliizing time is significantly reduced,and the self noise is reduced.It shows that the electrochemical and detection performances of the developed electrode are improved compared with those before adding sodium bicarbonate.The preparation method of high porosity marine electric field electrode has good feasibility and application prospect.

关 键 词：海洋电场电极 Ag/AgCl电极 碳酸氢钠 电化学性能 探测性能 高孔隙率 

分 类 号：P738.3[天文地球—海洋地质]