| 摘要 |
PURPOSE:To increase the battery capacity by sintering a mixture of the reducing metal powder and a hydrogen storage alloy at the specific temperature. CONSTITUTION:Mesh metal Mm, Ni, Co, Al are mixed at the element ratio 1:3:1.5:0.5, and it is dissolved and cooled in an arc furnace in the argon inert atmosphere. This alloy ingot is crushed to the grain size 50mum to obtain the hydrogen storage alloy powder. The Ca powder 0.1wt.% with the grain size 50mum is added and mixed with this powder, fluororesin 5wt.% is added and mixed as a binder, and water is added to obtain paste. It is pressed and dried on both faces of a nickel-plated punching metal current collector, and it is sintered for 10hr at 1200 deg.C in the argon inert atmosphere to obtain a negative electrode 2. The negative electrode 2 and a nickel positive electrode 1 are wound together with an alkali-resistant separator 3 to form an electrode group 4, it is inserted into an outer can 6, an electrolyte is injected, and the outer can 6 is sealed with a sealing body 8. The initial capacity is increased, and the cycle characteristic can be improved. |
