Ag/AgCl电极海洋电场探测机理研究  

Research on mechanism of marine electric field detection based on Ag/AgCl electrode

作　　者：李红霞[1] 宋玉苏[1] 申振[1] 王烨煊 LI Hong-xia;SONG Yu-su;SHEN Zhen;WANG Ye-xuan(Dept. of Basic Courses, Naval Univ. of Engineering, Wuhan 430033, China)

机构地区：[1]海军工程大学基础部,武汉430033

出　　处：《海军工程大学学报》2020年第1期57-61,75,共6页Journal of Naval University of Engineering

基　　金：湖北省交通运输厅科技项目(2017-538-1-8);海军工程大学自主立项资助项目(425317Q001)。

摘　　要：为研究Ag/AgCl电极海洋电场探测的机理,从电路角度建立了响应电场E′与发射电场E的函数关系,对自制的Ag/AgCl电极进行交流阻抗、Tafel和电极电场响应测试。结果表明:自制的Ag/AgCl电极在0.1 Hz的阻抗值大小约为10Ω,交换电流密度为1.61×10^-3 A·cm^-2,具有较好的电化学性能,且Ag/AgCl电极交换电流密度和表面积越大,探测性能越好。该测试结果与计算值能较好地吻合,验证了相关函数关系的正确性,说明基于具有稳定电位的Ag/AgCl电极探测海洋电场信号等同于测量电极对间海水的电压,从电路的角度解释了Ag/AgCl电极的海洋电场探测机理,具有一定的理论创新性。The mechanism of Ag/AgCl electrode Marine electric field detection is proposed from the angle of the circuit,and the function relation between the response field E′and the emission electric field E is established.AC impedance measurement,Tafel measurement and electrode field response test are conducted for the homemade Ag/AgCl electrodes.The results show that the impedance value of homemade Ag/AgCl electrode of 0.1 Hz is about 10Ω,and the exchange current density amounts to 1.61×10^-3 A·cm^-2,which presents good electrochemical properties;and the larger the Ag/AgCl electrode exchange current density and the surface area,the better the performance of detection.The experimental results of Ag/AgCl electrode field response are in good agreement with the calculated values,verifying the validity of the correlation function.It also illustrates that detecting marine electric field signal based on the stable potential of Ag/AgCl electrode is equivalent to measuring the voltage of seawater between electrode couple,which explains the marine electric field detection mechanism from the angle of the circuit,and thus representing a certain theoretical innovation.

关 键 词：海洋电场电极 Ag/AgCl电极 Tafel 交流阻抗 

分 类 号：E925.21[军事—军事装备学]