| 摘要 |
PURPOSE:To improve cycle life of the battery in the caption by simultaneously adding antimony powder and silica powder as liquid absorbing material into positive active material. CONSTITUTION:0.05-0.5wt.% of antimony powder and 0.5-3.0wt.% of silica powder as liquid absorbing material are simultaneously added into positive active material of a sealed lead storage battery. It is thus possible to improve electrolyte-carrying ability and utility of active material by strengthening bonding strength among particles of active material. Therefore, cycle life of the sealed lead storage battery is improved. However, when added amount of the silica powder becomes less than 0.5%, the electrolyte-carrying ability is not improved, while, when more than 3.0%, bonding strength among the particles of active material is lowered so that it is not effective to add the antimony powder into the battery. Furthermore, when added amount of the antimony powder becomes less than 0.05 %, it is also not effective, while, when more than 0.5%, antimony is deposited on a positive plate so that self-discharge is frequently occurred to lower cycle life. |
