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SHUANG LU1,* , HENGJING BA1, YINGZI YANG1
A novel embeddable MnO2/Mn reference electrode for corrosion monitoring is mainly prepared from a mixture of β type manganese dioxide and manganese by high-pressure molding in laboratory. The long-term electrochemical stability of electrodes was studied in cement mortar. AC impedance behavior of the MnO2/Mn reference electrode was examined in synthetic concrete pore solutions after that. The long-term potentiometric measurements showed good stability and no apparent potential drift within 90 days continuous measurement. The electrochemical stability of MnO2/Mn reference electrode is related to equilibrium established by double-phase oxides MnO2 and MnOx (1≤x<1.5). AC impedance behavior verified that the fabricated reference electrodes were sufficient to meet the requirement for corrosion monitoring in concrete environment..
Embeddable, MnO2, Manganese, AC impedance, Concrete, Electrochemical.
SHUANG LU, HENGJING BA, YINGZI YANG, Electrochemical stability of embeddable MnO2/Mn reference electrode and its AC impedance behavior, Optoelectronics and Advanced Materials - Rapid Communications, 4, 2, February 2010, pp.190-193 (2010).
Submitted at: Dec. 1, 2009
Accepted at: Feb. 2, 2010
Optoelectronics and Advanced Materials - Rapid Communications
(2023): 0.5 - 2023 Journal Citation Reports (Clarivate Analytics, 2024)
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