| 摘要 |
PURPOSE:To make addition of only water enough for the initial charge to simplify the production process of a battery by forming secondary or tirtiary particles having a specified particle size by the aggregation of silica fine particles having a specified primary particle size, and impregnating a necessary amount to discharge of sulfuric acid, then filling them in a battery container. CONSTITUTION:Secondary or tirtiary particles having a particle size of 50-200mu are formed by the aggregation of hydrous silica fine powder having a primary particle size of 10-40mmu. A necessary amount to discharge of sulfuric acid is impregnated in these fine particles to form sulfuric acid-impregnated powder 3. Since the powder 3 has fine primary particles and large specific surface area, it keeps a powdery state even if a large amount of electrolyte is impregnated. The powder 3 is filled in a space between a positive plate 1 and a negative plate 2 and in the surrounding of the plates to form a battery. Since the addition of only water is enough for the initial charge, the production process of the battery is simplified. In addition, handling of corrosive sulfuric acid is made unnecessary and productivity is increased. |
