| 摘要 |
PURPOSE:To increase the discharge voltage, increase the discharge capacity, and increase the energy density by using chemically synthesized manganese dioxide containing lithium hydroxide in its crystals for a positive electrode active material. CONSTITUTION:When chemically synthesized manganese dioxide is to be heated and dehydrated, a fixed quantity of lithium hydroxide-water salt is added to the chemically synthesized manganese dioxide in advance, a phenomenon that the lithium hydroxide generated when lithium hydroxide-water salt is decomposed by heating enters into crystals of manganese dioxide is utilized. Electrolytic manganese dioxide becomes a mixture of gamma type and beta type crystal structures at 250 deg.C or above and becomes the beta type crystal structure at 350 deg.C or above. The heating temperature of 350 deg.C or below is desirous. |
