| 摘要 |
Provided is a lead-acid battery that limits the decline of high-rate discharge properties at low temperatures, while retaining the ability to accept a charge. A lead-acid battery, wherein a paste-type anode plate formed from holding a paste-type active material, which has lead powder as the raw material, in a lead alloy current collector, contains carbonaceous materials in the anode active material as well as (a) bisphenol sulphonic acid polymer and (b) Sodium lignosulphonate. In the combined (a) and (b), the proportion of (a) is 50-80% of the total mass of (a) and (b) and, relative to the mass of the raw lead powder of the anode active material, the combined mass of (a) and (b) is 0.05-0.3 mass%. Optimally, in the anode active material, squamous graphite with an average primary particle size of 10 µm or greater is contained as a carbonaceous material. |
