Flat primary battery, negative electrode mixture for flat primary battery, and method for manufacturing flat primary battery

摘要

A flat primary battery capable of enhancing the productivity and a method for manufacturing the same are disclosed. The flat primary battery is a flat alkaline primary battery including a positive electrode mixture, a negative electrode mixture, and an electrolytic solution in a can, wherein the negative electrode mixture includes a zinc powder or a zinc alloy powder and an insulating powder of a non-metal which does not react with an electrolytic solution and which has an average particle diameter of 110 μm or more, the value of which is from 60% to 140% of an average particle diameter of the zinc powder or zinc alloy powder.

主权项

1. A flat primary battery comprising a negative electrode mixture in a gel state and an electrolytic solution in a can, wherein
the negative electrode mixture includes a zinc powder or a zinc alloy powder, a gelling agent, and an insulating powder of a non-metal which does not react with the electrolytic solution, wherein the insulating powder is selected from the group consisting of polytetrafluoroethylene, polypropylene, a polyamide, polyethylene and mixtures thereof and wherein the insulating powder has an average particle diameter of from 60% to 140% of an average particle diameter of the zinc powder or zinc alloy powder, and the average particle diameter of the insulating powder is 110 μm or more.