石墨烯/纳米银对Ag/AgCl海洋电场探测电极的改性机制研究  

Study on the modification mechanism of Ag/AgCl marine electric field detection electrode by graphene/silver nanoparticle

作　　者：李红霞[1] 徐瑞昌 辛颉 谢一戎 LI Hongxia;XU Ruichang;XIN Jie;XIE Yirong(Department of Basic Courses,Naval University of Engineering,Wuhan 430033,China;92351 troops of the Chinese People’s Liberation Army,Sanya 572011,Chin;Wuhan Britain-China School,Wuhan 430030,China)

机构地区：[1]海军工程大学基础部,武汉430033 [2]中国人民解放军92351部队,海南三亚572011 [3]武汉英中高级中学,武汉430030

出　　处：《兵器装备工程学报》2024年第7期242-246,282,共6页Journal of Ordnance Equipment Engineering

基　　金：海军工程大学自主研发项目(2022501100)。

摘　　要：针对不同含量石墨烯/纳米银改性的Ag/AgCl电极分别进行交流阻抗、扫描电镜、吸水率和电位稳定性测试。实验结果表明:随着石墨烯/纳米银含量的增加,改性Ag/AgCl电极的界面结构参数弥散系数C_(dl)-P增大,电容值C_(dl)-T减小,动力学特征参数电荷转移电阻R_(ct)先减小后增大。基于交流阻抗测试得到的电极动力学特征信息及界面结构信息与电极的扫描电镜、吸水率以及电位稳定性测试结果基本吻合。石墨烯/纳米银对Ag/AgCl电极的改性主要体现在提高电极的表面均匀性和导电性,但是降低了电极的孔隙率,这3个方面影响的协同作用反映了石墨烯/纳米银对Ag/AgCl电极改性的内在机制。AC impedance,scanning electron microscopy,water absorption and potential stability test were carried out for Ag/AgCl electrodes modified by graphene/nano silver with different content.The experimental results show that with the increase of graphene/nano silver content,the interface structure parameter C_(dl)-P of the modified Ag/AgCl electrode increases,the capacitance value C_(dl)-T decreases,and the dynamic characteristic parameter charge transfer resistance R_(ct) first decreases and then increases.The electrode dynamic characteristic information and interface structure information obtained based on AC impedance test are basically consistent with the scanning electron microscope,water absorption and potential stability test results of the electrode.The modification of Ag/AgCl electrode by graphene/nano silver is mainly reflected in three aspects:improving the surface uniformity and conductivity of the electrode,and reducing the porosity of the electrode.The synergistic effect of these three aspects reflects the internal mechanism of the modification of Ag/AgCl electrode by graphene/nano silver.

关 键 词：Ag/AgCl电极 石墨烯/纳米银 交流阻抗 电位稳定性 吸水率 

分 类 号：O69[理学—化学] P738.3[天文地球—海洋地质] TH766.7[天文地球—海洋科学]