Ag/AgCl和碳纤维海洋电场电极的探测特性研究  

Study on the detection characteristics of Ag/AgCl and carbon fiber marine electric field electrodes

作　　者：申振[1] 宋玉苏[1] 王烨煊 李红霞[1] Shen Zhen;Song Yusu;Wang Yexuan;Li Hongxia(Naval University of Engineering, Wuhan 430033, Chin)

机构地区：[1]海军工程大学

出　　处：《仪器仪表学报》2018年第2期211-217,共7页Chinese Journal of Scientific Instrument

基　　金：国家自然科学基金(41476153)项目资助

摘　　要：使用烧结法制备了Ag/AgCl固态不极化海洋电场电极,利用聚丙烯腈碳纤维T300制备了电容型海洋电场电极。研究了不极化电极和电容型电极探测海洋电场的原理,提出了两种电极的使用方法并研究了其探测性能。使用电化学工作站对两种电极进了循环伏安测量和电极对极差跟踪;使用低频低噪声放大器对两种电极的自噪声稳定速度和大小进行对比测量;在自制水槽中测试了两种电极在不同频率下的响应性能。试验结果表明两种电极均可测量1 m Hz以上的交变海洋电场;相比于Ag/AgCl电极,碳纤维电极具有极差小和自噪声稳定速度快的特点;稳定后两种电极的自噪声均为1 n V/√Hz@1 Hz。The Ag/AgCl solid non-polarized marine electric field electrode was prepared using sintering method and the capacitive marine electric field electrode was prepared using poly-acrylonitrile carbon fiber T300. The detection principles of the marine electric field using the non-polarized electrode and capacitive electrode were studied. The using methods of two kinds of electrodes were proposed and their detection performances were studied. The electrochemical workstation was used to conduct the cyclic voltammetry characteristic measurement and electrode pair potential difference tracking of the two kinds of electrodes. The self-noise stabilization speed and selfnoise level of the two kinds of electrodes were measured and compared using a low-frequency and low-noise amplifier. The response performances of the two kinds of electrodes at different frequencies were measured using a self-made water tank. The experiment results show that the two kinds of electrodes can both measure the alternating marine electric field at the frequency of 1 m Hz or above. Compared with Ag/AgCl electrode,the carbon fiber electrode has the characteristics of small potential difference and fast self-noise stabilization speed. After stabilization the self-noise of both electrodes is 1 n V/√Hz@ 1 Hz.

关 键 词：Ag/AgCl 碳纤维 海洋电场电极 循环伏安 自噪声 

分 类 号：TH766.7[机械工程—仪器科学与技术]