Study Of Li-H₂O Battery And Inhibitors In Alkaline Solution

Lithium is the lightest metal,and Li-H2O reaction has high specific energy.It goes back to 1970s for research of Li-H2O reaction, but the study of Li-H2O reaction has progressed slowly,which is still primary stage.The main reason is quickly reaction of Li-H2O. The self-corrosion of lithium is decreased in 8～12M alkaline solution, but amount of hydrogen evolution is still higher and electrochemical properties of lithium is strictly inhibited.Reseachers attempt to reduce corrosion of lithium in using several inhibitors. However,it has little effect. Inhibition effect of single-component and combined corrosion inhibitors is studied changing variety and lowering concentration of alkaline by methods of hydrogen evolution experiment in this paper. The result shows corrosion inhibitions of binary compound inhibitor in 8M KOH and alcohol+triethanolamine+ diethyleneglycol and alcohol+triethano1amine+ diethyleneglycol+lead nitrate in 5M NaOH is better. Inhibiting mechanism is discused by means of polarization curves etc. The effects of variety and concentration of alkaline and temperature on lithium anode in electrolyse inhibitors is analyzed. The corrosion of Li-Mg and Li-Al alloys ect. 8 lithium alloys in alkaline is studied,too.it is analyzed that effects of alloying agent for lithium alloy on its electro-chemical performance by the measurement of the volume of hydrogen evolution and the change of open circuit potential,and the reason of corrosion accelerated is discussed.The results shows properties of 0.5%Li-Mg and 0.5%Li-In alloys in 8 lithium alloys is better, but the volume of hydrogen evolution is higher than lithium in the same conditions. It is not still attained that the target of lowering the corrosion of lithium and improvement of discharging capacity. However ,valuable experience is presented for further study on lithium alloys.