US 11,658,347 B2
Lead-acid battery
Yasuyuki Hamano, Kyoto (JP); and Hiroki Kagohashi, Kyoto (JP)
Assigned to GS Yuasa International Ltd., Kyoto (JP)
Appl. No. 17/614,886
Filed by GS Yuasa International Ltd., Kyoto (JP)
PCT Filed May 29, 2020, PCT No. PCT/JP2020/021479
§ 371(c)(1), (2) Date Nov. 29, 2021,
PCT Pub. No. WO2020/241882, PCT Pub. Date Dec. 3, 2020.
Claims priority of application No. JP2019-103304 (JP), filed on May 31, 2019.
Prior Publication US 2022/0246994 A1, Aug. 4, 2022
Int. Cl. H01M 4/73 (2006.01); H01M 10/06 (2006.01); H01M 4/66 (2006.01); H01M 4/04 (2006.01); H01M 4/02 (2006.01)
CPC H01M 10/06 (2013.01) [H01M 4/662 (2013.01); H01M 4/0478 (2013.01); H01M 2004/027 (2013.01); H01M 2004/028 (2013.01)] 10 Claims
OG exemplary drawing
1. A lead-acid battery comprising a positive electrode plate, a negative electrode plate, an electrolyte solution, and a polymer compound,
wherein the positive electrode plate comprises a positive current collector and a positive electrode material,
the negative electrode plate comprises a negative current collector and a negative electrode material, wherein at least the negative electrode material contains the polymer compound,
the positive current collector contains Sn in an amount of 0.95% by mass or more, 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 and the polymer compound contains a repeating structure of oxy C2-4 alkylene units.