| 摘要 |
PURPOSE:To provide an active material, which is easy to control formulation and has good quality, for a secondary battery positive plate by chemically preparing cobalt-nickel oxide which is electrochemically active. CONSTITUTION:Nickel or nickel compound such as NiO or Ni(OH)2, preferably its powder, is added to a solution containing cobalt salt such as cobalt nitrate or caobalt sulfate and they are stirred. Alkaline solution such as sodium carbonate or sodium hydroxide containing oxidizing agent such as sodium hypochlorite, bromine, or potassium peroxosulfate is mixed to above solution and stirred to form black precipitation. The precipitation is allowed to stand for about one hour after mixing to complete the reaction. The precipitation is washed, dried, and crushed. This cobalt-nickel mixed oxide is used as a positive active material and zinc or iron as a negative active material to manufacture an alkaline battery. |
