| 摘要 |
PROBLEM TO BE SOLVED: To provide a lead-acid battery having large discharge capacity by enlarging the specific surface area of an active material of a positive electrode plate. SOLUTION: A lead monoxide and lead powder mainly composed of lead are kneaded together by dilute sulfuric acid, and a paste-like active material is prepared. This paste-like active material is filled in a current collecting body (a lead alloy-made lattice body), and it is formed as an unformed plate through ageing-drying process. In this way, the unformed plate prepared for a positive electrode plate and a negative electrode plate is formed in a forming liquid (dilute sulfuric acid), and is formed as the final plate. Lignin (for example, kraft lignin) is dissolved in the forming liquid, and the formation is performed in a condition where the lignin is adsorbed to the positive electrode plate. |
