| 摘要 |
PURPOSE:To obtain a battery with stable characteristics by constructing negative pole with rare earth hydrogen absorptive alloy powder with specific grain diameter. CONSTITUTION:In a battery equipped with a positive pole alkaline electrolyte, and a negative pole, having rare earth hydrogen absorptive alloy as a main ingredient, the negative pole is composed of rare earth hydrogen absorptivealloy powder, with average powder diameter of 35+ or -10mum including 13volume% or less, grains with diameter 10mum or less, and 1weight% or less powders which do not pass through a 200-mesh screen by a lazer diffraction method. By using hydrogen absorptive alloy powders of those sizes a battery with good conditions for a long period of time, can be obtained without uneven thickness of applied electrode, and too high fluidity of paste. |
