| 摘要 |
PURPOSE:To retard the corrosion of a zinc can during storage to increase storage performance by using a paper material coated with a paste material to which an ester type polyethylene glycol family nonionic surface active agent is added as a separator. CONSTITUTION:In a manganese dry battery obtained by accommodating a positive mix 1 in a zinc can 3 through a separator 2, a paper material coated with a paste material to which an ester type polyethylene glycol family nonionic surface active agent in which the addition number of ethylene oxides is 8 or more is added is used as the separator 2. This surface active agent may be added to an electrolyte which is to be added to the positive mix instead of adding to the paste material. The preferable content of the surface active agent is 0.25-0.5wt.% based on the weight of the paste material constituents when it is added to the paste material and 0.005-0.01wt.% based on the weight of electrolyte constituents when it is added to the electrolyte. |
