Back to results
US 12,603,272 B2Granted
Alkaline dry battery
AssigneePanasonic Intellectual Property Management Co., Ltd.
InventorsYasufumi Takahashi, Takayuki Nakatsutsumi, Yasuyuki Kusumoto, Atsushi Fukui
Life of this patent
Estimating the term…
Abstract
An alkaline dry battery includes a positive electrode, a negative electrode, a separator disposed between the positive electrode and the negative electrode, and an electrolyte, and the negative electrode includes a negative electrode active material containing zinc, a compound A having a P—O bond, and terephthalic acid. The molar ratio of the compound A to the terephthalic acid is 0.025 or more and 2.5 or less.
Claims8
An alkaline dry battery, comprising:
- a positive electrode;
- a negative electrode;
- a separator disposed between the positive electrode and the negative electrode;
- and an electrolyte, wherein
- the negative electrode includes a negative electrode active material containing zinc, a compound A having a P—O bond, and terephthalic acid,
- the compound A contains at least one selected from the group consisting of phosphoric acid, a phosphate salt, a phosphite ester, and a phosphate ester,
- a molar ratio:
- P/Zn of P element derived from the compound A to Zn element derived from the negative electrode active material is 0.00001 or more and 0.0014 or less in the negative electrode, and
- a molar ratio of the compound A to the terephthalic acid is 0.025 or more and 2.5 or less.
6 more elements
Dependencies are inferred from the claim text.