Alkaline dry battery
AssigneeMatsushita Electric Industrial Co., Ltd.
InventorsShuji Fujiwara, Shigeto Noya, Yasuo Mukai, Michiko Fujiwara, Shinichi Sumiyama, Takeshi Okubo, Yasuko Hoshina
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Abstract
In order to obtain an alkaline dry battery low in the possibility of electrolyte leakage and excellent in discharge performance as well as an alkaline dry battery which is not likely to cause an internal short circuit even with the use of a thin separator, as a zinc powder used is one including 65 to 75 wt % of first zinc particles having a particle size of larger than 75 μm and not larger than 425 μm, and 25 to 35 wt % of second zinc particles having a particle size of not larger than 75 μm.
Claims6
An alkaline dry battery comprising a negative electrode containing a zinc powder, an electrolyte, a separator and a positive electrode, wherein said zinc powder includes 60 to 80 wt % of first zinc particles having a particle size of larger than 75 μm and not larger than 425 μm, and 40 to 20 wt % of second zinc particles having a particle size of not larger than 75 μm.
Dependencies are inferred from the claim text.