电化学2017，Vol.23Issue(1)：36-44,9.DOI:10.13208/j.electrochem.160328
适用于钢筋混凝土腐蚀监测的长效MnO2参比电极的研制
Preparations of MnO2 Reference Electrodes for Corrosion Monitoring of Reinforced Concrete
摘要
Abstract
In this work,the solid reference electrode was assemblied by using the electrochemically synthesized manganese dioxide (MnO2) (EMD) powder,gel electrolyte and thin mortar layer for the durability evaluation of concrete.The EMD reference electrode exhibited higher potential stability (＜ 10 mV drift) than the chemically synthesied MnO2 (CMD) based on half year potential tests in the saturated Ca(OH)2 solution and hardened mortar.In addition,the EMD electrode was almost insensitive to the presences of chloride ion and corrosion inhibitor.Electrochemical impedance and polarization curves indicate that the EMD electrode had lower charge transfer resistance,higher exchange current density and lower temperature coefficient than the CMD electrode.The EMD electrode could be a potential candidate as the long-term reference electrode for the durability management of concrete infrastructure.关键词
MnO2/参比电极/混凝土/电极电位Key words
MnO2/reference electrode/concrete/electrode potential分类
化学化工引用本文复制引用
杨莉,徐兵,王海,董泽华..适用于钢筋混凝土腐蚀监测的长效MnO2参比电极的研制[J].电化学,2017,23(1):36-44,9.基金项目
国家自然科学基金项目(No.51371087)资助 （No.51371087）
