| 摘要 |
PURPOSE:To prevent the diffusion of dissolved silver oxide toward negative electrode side and the oxidation degradation of a separator by placing a gelled electrolyte containing carbon powder on the surface, facing a negative electrode, of a positive mix using silver oxide as active material. CONSTITUTION:A positive mix 2 using silver oxide as active material is placed inside a positive case 1 with a positive ring 4 and press-molded, then potassium hydroxide electrolyte is poured thereon. Carbon powder is mixed with a water soluble polymer such as carboxymethylcellulose and polyacrylic acid to form a felled electrolyte, and the gelled electrolyte is applied to the surface of the positive mix 2 to form a gelled electrolyte layer 3. A separator 5, an electrolyte absorbing layer 6, and a gelled zinc negative electrode 7 filled in a sealing plate 8 are placed thereon to form a silver oxide battery. By the presence of the electrolyte layer 3, the diffusion of dissolved silver oxide layer toward negative side and the degradation of the separator are retarded, and reliability of storage life is increased. |
