| 摘要 |
PROBLEM TO BE SOLVED: To provide a manganese dry cell in which variations in open-circuit voltage is contained from immediately after manufacture and prompt judgement on the quality of the product can be made, and which is superior in a heavy load discharge performance. SOLUTION: The manganese dry cell is provided with a negative electrode zinc can 4 of bottomed cylindrical shape, a positive electrode mixture 1 containing manganese dioxide housed in the negative electrode zinc can 4, and a separator 3 which is arranged between the negative electrode zinc can 4 and the positive electrode mixture 1 and is made of a paper coated with a paste material. The separator 3 contains bismuth of 0.01-0.05 pts.wt. per 100 pts.wt. of dry solid component in the paste material as a bismuth compound of water insolubility. COPYRIGHT: (C)2009,JPO&INPIT
|
