| CPC H01M 4/20 (2013.01) [H01M 4/627 (2013.01); H01M 50/437 (2021.01); H01M 2004/027 (2013.01); H01M 4/68 (2013.01); H01M 50/271 (2021.01); H01M 50/296 (2021.01)] | 18 Claims |
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17. A lead-acid battery comprising:
a container with a cover, the container including one or more compartments;
one or more cell elements in the one or more compartments, the one or more cell elements comprising:
a positive electrode, the positive electrode having a positive current collector and a positive active material in contact with the positive current collector;
a negative electrode, the negative electrode having a current collector and negative paste in contact with the current collector, the negative paste comprising water, leady oxide, polymer fiber, sulfuric acid, and a blend comprising fine particle barium sulfate, with a particle size of 0.2 to 1.1 micrometers for mean D50, a first expander being a first oxylignin having a first molecular weight, is 0.1 wt % to 0.25 wt % with respect to a leady oxide weight a second expander being a second oxylignin having a second molecular weight is 0.1 wt % to 0.25 wt % with respect to a leady oxide weight, which is different from the first molecular weight, and a carbonaceous material; and
an absorbent glass mat separator between the positive electrode and the negative electrode;
electrolyte within the container; and
one or more terminal posts extending from the container or the cover and electrically coupled to the one or more cell elements.
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