全固态电解质Cu/CuSO_(4)参比电极的性能  

Properties of All-Solid-State Electrolyte Cu/CuSO_(4)Reference Electrode

作　　者：王辉 刘朝信 罗维华 王廷勇 王海涛 WANG Hui;LIU Zhaoxin;LUO Weihua;WANG Tingyong;WANG Haitao(Qingdao Sunrui Marine Enviroment Engineering Co.,Ltd.,Qingdao 266101,China)

机构地区：[1]青岛双瑞海洋环境工程股份有限公司,青岛266101

出　　处：《腐蚀与防护》2023年第5期19-22,27,共5页Corrosion & Protection

摘　　要：针对传统埋地长效Cu/CuSO_(4)参比电极使用寿命短,易损坏的缺点,研发了全固态电解质Cu/CuSO_(4)参比电极。通过扫描电镜(SEM)、能谱仪(EDS)和压汞法分析了全固态电解质微观形貌、元素分布和结构;采用电化学试验、离子扩散试验和电极埋地试验等测试了该电极的性能。结果表明:全固态电解质形成了致密的微孔结构;全固态电解质Cu/CuSO_(4)参比电极具有良好的电位稳定性和抗极化性能,温度系数为0.862 mV/℃;该参比电极中Cu^(2+)流失速率仅有为传统Cu/CuSO_(4)参比电极的1/3,该参比电极在土壤环境中具有优异的性能,可用于工程应用。Aiming at the shortcomings of traditional buried long-term Cu/CuSO_(4)reference electrode,such as short service lifetime and fragile,an all-solid-state electrolyte Cu/CuSO_(4)reference electrode was developed.The micro morphology,element distribution and structure of the all-solid-state electrolyte were analyzed through scanning electron microscopy(SEM),energy disperse spectroscopy(EDS)and mercury porosimetry.The properties of the reference electrode were studied by electrochemical test,ion diffusion test and electrode buried test.The results showed that the all-solid-state electrolyte formed a dense microporous structure.The electrode had good potential stability and anti-polarization performance.The temperature coefficient of the electrode was 0.862 mV/℃.The copper ion loss rate of the electrode was only 1/3 of that of the traditional Cu/CuSO_(4)reference electrode.The reference electrode had good performance in soil environment,so it can be applied to engineering.

关 键 词：参比电极 全固态电解质 阴极保护 硫酸铜 腐蚀防护 

分 类 号：TE8[石油与天然气工程—油气储运工程]