A new electrode, Mo/Mo/MoO
2 has been proposed for the purpose of better control of corrosion inhibition of constructive materials in adsorption refrigeration systems. The electrode is prepared by heating a molybdenum rod in air at 873K followed by reduction in hydrogen at 723K. The potential of the electrode was stable in LiBr solutions of wide range of temperature (298-428K), concentrations of LiBr (2, 17.3mol kg
-1), LiOH (10
-3-10
-1mol kg
-1), Li
2MoO
4 (10
-4-10
-2mol kg
-1) and LiNO
3 (0-10
-2mol kg
-1). The potential of the electrode responded to the concentration of LiOH while not to those of Li
2MoO
4 and LiNO
3. The electrode potential was changed sharply by introducing oxygen into the solution at 353K in 2mol kg
-1 LiBr solution. But it became less clear at 428K in 17.3mol kg
-1 LiBr solution. The electrode can be used as a sensor for the concentration of LiOH. Another application of the electrode would be a quasi internal reference electrode in a commercial machine for the monitoring of corrosion potential of steels.
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