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1. (WO2018199124) LEAD ACID STORAGE BATTERY

Pub. No.:    WO/2018/199124    International Application No.:    PCT/JP2018/016696
Publication Date: Fri Nov 02 00:59:59 CET 2018 International Filing Date: Thu Apr 26 01:59:59 CEST 2018
IPC: H01M 4/14
H01M 4/62
Applicants: GS YUASA INTERNATIONAL LTD.
株式会社GSユアサ
Inventors: MIZOGUCHI, Yasunori
溝口 泰紀
Title: LEAD ACID STORAGE BATTERY
Abstract:
[Solution] This lead acid storage battery is provided with a negative electrode plate, a positive electrode plate and an electrolyte solution; and the negative electrode plate contains a negative electrode material that contains a carbon material and an organic shrink-proofing agent. The carbon material contains a first carbon material that has a particle diameter of 32 μm or more and a second carbon material that has a particle diameter of less than 32 μm; and the ratio of the powder resistance R2 of the second carbon material to the powder resistance R1 of the first carbon material, namely R2/R1 is from 15 to 155 (inclusive). The organic shrink-proofing agent contains a lignin sulfonic acid or a salt thereof; and the content of the organic shrink-proofing agent in the negative electrode material is from 0.03% by mass to 0.8% by mass (inclusive).