| 摘要 |
PROBLEM TO BE SOLVED: To make the life performance and self-discharge performance excellent without loosing the energy density by forming projections on the surface of an acid- resistant, oxidation-resistant sheet 3, and filling an active material up to the upper part of the projection to cover the whole sheet surface with the active material. SOLUTION: An acid-resistant, oxidation-resistant sheet 3 having a number of through-holes 2 is laminated with a lead or lead allay sheet 1, and an active material 8 is filled in the through-holes 2. Projections 4 are formed on the surface of the acid- resistant, oxidation-resistant sheet 3, and the active material 8 is filled between the acid-resistant, oxidationresistant sheet 3 and the upper end of the projections 4. An electrolyte holding body 7 makes contact with not the acidresistant, oxidation-resistant sheet 3 surface but the active material 8. Thus, no concentration cell is generated in the boundary surface between the electrode and the electrolyte holding body 7, expansion of the active material within the through-holes 2 is suppressed, and a battery excellent in self-discharging performance and life property can be thus provided. The active material filled in the surface of the sheet 3 is hardly dropped by forming the projections on the acidresistant, oxidation-resistant sheet 3, and the working efficiency can be improved. |
