摘要
为探测海洋环境中的低频电场,制备了固态Ag/AgCl电极,通过对电极稳定性、灵敏度及其对已知电场信号响应特性的考察,探讨了其用于海水环境中电场传感器探测电极的可行性,并用电化学交流阻抗的方法研究了不同频率范围时电极的界面反应特性。结果表明,在海水环境中,Ag/AgCl电极稳定性好,灵敏度高,频率响应特性好,能够较准确地探测海水中一定频率范围的交流电场信号,可作为海洋环境中电场传感器的探测电极。受电极界面反应影响,电极在探测信号时对应着一个最佳工作频率范围。
In order to detect the low frequency electric field, a Ag/AgCl solid-state electrode was prepared. Feasibility of the electrode used in marine electric field sensor was studied by the stability, the sensitivity and its response to the known signal of impressed electric field, Characteristic of the electrochemical reaction on the surface of the electrode at different frequencies was studied by electrochemical impedance spectrum. The results showed that the Ag/AgCl electrode could be used as detection probe in the sensor because of its stability, precision, and excellent response. The optimum of frequencies of the electrode was limited by the rate of the reaction on its surface.
出处
《武汉理工大学学报》
EI
CAS
CSCD
北大核心
2007年第4期64-67,共4页
Journal of Wuhan University of Technology
关键词
Ag/AgCl电极
探测
海水
低频电场
界面反应
Ag/AgCl electrode
detection
seawater
low-frequency electric field
interface reaction
