期刊
CORROSION SCIENCE
卷 184, 期 -, 页码 -出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2021.109393
关键词
A; Concrete; B; SEM; B; XRD; B; EIS; C; Electrodeposited films
资金
- Key Research and Development Program of China [2017YFB0309904]
- National Natural Science Foundation of China [U2001225, 51872097]
- Guangdong International Science and Technology Project [2020A0505100006]
- Pearl River S&T Nova Program of Guangzhou [201806010188]
The study investigated the surface properties and electrochemical behavior of Ag| AgCl electrode prepared with different current density, revealing that higher current density led to reduced distance for ions diffusion through AgCl grains boundaries and formation of more spherical and porous AgCl grains, thereby decreasing the electrical resistivity of AgCl film and Rct of Ag|AgCl electrode.
The electrochemical behavior of Ag|AgCl electrode for chloride detection is closely related to the microstructure of AgCl film on the electrode surface. In this study, the surface properties and electrochemical behavior of Ag| AgCl electrode prepared with different current density were investigated. With a higher current density, the distance for ions diffusion through the boundaries of AgCl grains was reduced, due to the tended growth of AgCl at crystal plane (111) and formation of more spherical AgCl grains and porous AgCl film. As a result, both the electrical resistivity of AgCl film and Rct of Ag|AgCl electrode decreased.
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