| 摘要 |
PURPOSE:To prevent choking of a gel charging nozzle, and improve workability by using a gel zinc negative electrode in which gelatinizer and alkaline electro lyte are mixed, and negative electrode active material mainly comprising non- amalgamation zinc powder comprising thin and long zinc particles and spherical zinc particles mixed with each other. CONSTITUTION:Zinc powder 1 of spherical particles of a longer diameter to shorter diameter ratio within a range of 1.0-2.0 is mixed with zinc powder 2 of thin and long particles to prepare unamalgamated zinc powder. To this powder, gelatinizer comprising polyacrylic acid, and electrolyte 3 of alikaline solution comprising potassium hydroxide are added, and obtained matter is agitated to provide a gel zinc negative electrode 35. The negative electrode 35 is inserted into a positive electrode case 31 also acting as a positive electrode terminal through positive electrode active material 32 comprising AgO or Ag2O, a separator 33, and a liquid holding material 34 comprising nonwoven fabric of vinylon or the like. Next, an aperture part of the case 31 is folded toward a sealing plate 36 also acting as a negative electrode terminal through an insulation packing 37 of nylon to seal a battery. Choking of a charging nozzle for the negative electrode 35 can thus be prevented, thereby workability is improved. |
