| 摘要 |
PURPOSE:To shorten a voltage recovering time in the beginning of a large current discharging and furthermore prevent a long-time deterioration of a discharge voltage and discharge capacity by adding a vinyl-based polymer having a chlorine substituent and lead compound to an electrolyte. CONSTITUTION:Polyvinyl chloride, polyvinylidene chloride, vinyl chloride- vinylidene chloride copolymer, and ethylenevinyl chloride copolymer etc., for instance, are used for a vinyl-based polymer having a chlorine substituent. An adding quantity to an electrolyte of the vinyl-based polyger is to be 0.2-10 g per 1l of the electrolyte. Organic lead compounds, for instance, basic phthalic acid lead and lead stearate etc., basic lead sulfate, and basic phasphorous acid lead etc. are used for lead compounds. An adding quantity of lead compounds is to be 1-10 wt.% of vinyl-based polymer quantity to be added. |
