Electrochemical properties of 1-butyl-3-methylimidazolium bromide melt containing water impurities
Tóm tắt
The effect of a water impurity (1.8–10 wt %) on the conductivity of the ionic liquid-H2O binary system was studied in a wide temperature range. It was shown that the interaction between components is characteristic of this system, and the molar ratio of components 1: 1 is boundary between the structures of solution and melt. The basic kinetic features of electrochemical reduction of water of the BMImBr-H2O binary system were determined by voltammetry with linear potential sweep. The transfer coefficient for the cathodic process (α = 0.46) and H2O molecule diffusivities were determined depending on the water content (
$$
D_{H_2 O}
$$
= (0.2–1.3) × 10−10 cm2s−1).
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