Lead-acid battery
AssigneeGS Yuasa International Ltd.
InventorHiroki Kagohashi
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Abstract
A lead-acid battery includes a positive electrode plate, a negative electrode plate, and an electrolyte solution. The negative electrode plate includes a negative electrode material. The negative electrode material contains a polymer compound, and the polymer compound has a peak in a range of 3.2 ppm or more and 3.8 ppm or less in a chemical shift of 1H-NMR spectrum. Alternatively, the negative electrode material contains a polymer compound having a repeating structure of oxy C2-4 alkylene units. A ratio: Cn/Sn of a content Cn of the polymer compound in the negative electrode material to a specific surface area Sn of the negative electrode material is 25 ppm·m−2·g or more.
Claims14
A lead-acid battery comprising a positive electrode plate, a negative electrode plate, and an electrolyte solution,
- wherein the negative electrode plate includes a negative electrode material,
- the negative electrode material contains a polymer compound having a repeating structure of oxy C2-4 alkylene units, and
- a ratio:
- Cn/Sn of a content Cn of the polymer compound in the negative electrode material to a specific surface area Sn of the negative electrode material is 25 ppm·m−2·g or more, the specific surface area Sn of the negative electrode material being a BET specific surface area determined by a gas adsorption method using nitrogen gas.
Dependencies are inferred from the claim text.