Factors Influencing Potential Stability of a SolidAg/AgCl Reference Electrode

Journal of Chinese Society for Corrosion and protection

2013, Vol. 33

Issue (3): 231-234 DOI:

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Factors Influencing Potential Stability of a Solid
Ag/AgCl Reference Electrode

XIN Yonglei, XU Likun, YIN Pengfei, WANG Juntao, LI Xiangbo

State key Laboratory for Marine Corrosion and Protection, Luoyang Ship Material Research Institute, Qingdao 266101, China

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Abstract The all-solid-state Ag/AgCl reference electrode was prepared by thermal-dip coating and electrochemical reduction method. Effects of chloride ion concentration, temperature, light, pH and seawater flow on the potential of the Ag/AgCl reference electrode were studied in this paper. The results showed that the as-prepared Ag/AgCl reference electrode had good Nernst response and temperature response characteristic. If dissolved oxygen existed in the solution, on the electrode surface Ag₂O formed under sunshine and the electrode potential drifted. The flow rate of seawater had great effect on the electrode potential, however，the influence of pH value was minimal.

Key words: Ag/AgCl reference electrode Nernst response temperature light illumination

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XIN Yonglei,XU Likun,YIN Pengfei,WANG Juntao,LI Xiangbo. Factors Influencing Potential Stability of a Solid
Ag/AgCl Reference Electrode. Journal of Chinese Society for Corrosion and protection, 2013, 33(3): 231-234.

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https://www.jcscp.org/EN/ OR https://www.jcscp.org/EN/Y2013/V33/I3/231

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