| UNEP issued in 2013: By 2020, the battery containing mercury will be prohibited to produce, import and export. Not only produce large of batteries but also consumer lots of them in China. In response to the call of the world’s mercury-free, from green energy,environmental protection, energy conservation points of view, the efficient and green environment-friendly substituting mercury corrosion inhibitors was found to solve the batteries’ mercury pollutionBased on the understanding of the tafel polarization curves and the structure of the organic surfactants, some new ionic liquids were studied in this dissertation. From polarization curves, it was found that the inhibition efficiency was only about 70% using a single inhibitor. When the surfactants and ionic liquids were orthogonal composited, the inhibitiing efficiency was up to 97.92%, which was among the highest international level.The thermodynamic behavior and the inhibition mechanism of zinc electrode were studied. It was found that the adsorption of them on the surface of the zinc electrode was spontaneously and followed by Langmuir adsorption isotherm. Its ΔGads is between 20 and 40 kJ/mol, which is called physical- chemical adsorption. The equivalent circuit was fitted and conformed to R(CR) model. The cyclic voltammetry, AC impedance were measured and this compound had the same inhibition mechanism. They all reduced the battery internal resistance, by physical- chemical adsorption.By optimizing the slurry material formulation paste and the amount of corrosion inhibitors, The performances of the green mercury-free coated paper were consistent with the standards QB/T 2303-2008. The battery’s performance meet the technical requirements of GB 8897-2008 T, and better than the existing batteries, such as low-mercury batteries, bismuth or indium as corrosion inhibitor. |
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