MANUFACTURE OF SEALED METAL OXIDE-HYDROGEN STORAGE BATTERY

摘要

PURPOSE:To obtain a sealed metal oxide-hydrogen storage battery which is assembled without formation process in a hydrogen-containing atmosphere and has a proper capacity balance between positive and negative electrodes by manufacturing a negative electrode by molding hydrogen absorbing alloy powder in which hydrogen remains. CONSTITUTION:Hydrogen absorbing alloy is powdered by alternately repeating a process by which hydrogen is absorbed in a massive hydrogen absorbing alloy and a process by which the absorbed hydrogen is desorbed. Polytetrafluoroethylene is mixed with the alloy powder in an inactive gas stream, and the mixter is formed in a sheet. is pressed against a nickel net to form a negative electrode. The negative electrode and a positive electrode obtained by impregnating Ni(OH)2 in a porous nickel plate are stacked with a separator made of polyamide nonwoven fabric interposed, then they are spirally wound to manufacture a AA-size unit cell.