摘要 |
PURPOSE:To obtain a cadmium negative plate having high charging efficiency by containing a specified weight of potassium titanate based on the total weight of cadmium. CONSTITUTION:A negative plate contains 0.25-20wt.% potassium titanate based on the total weight of cadmium. In particular, in a content range of 0.5-15wt.%, charging efficiency reaches 97% or more and inactive cadmium hydroxide is decreased. If the content of potassium titanate exceeds 20wt.%, the theoretical capacity density of a cadmium active material is decreased. The cadmium negative plate having high charging efficiency is obtained. |