| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a nickel-cadmium storage battery which has a large capacity and suppresses a rise in internal pressure, by maintaining the crystallinity of nickel hydroxide within a proper range to suppress the swelling of a positive electrode. <P>SOLUTION: The method for manufacturing a nickel-cadmium storage battery includes a battery assembly step in which an electrode group consisting of a separator 13, a negative electrode 12, and a positive electrode 11 in which a positive electrode active material comprising nickel hydroxide, where a half width of X-ray diffraction peak (001) surface of nickel hydroxide crystal is 0.61°or more and that of (100) surface is 0.49°or less, is coated on a core body 11a, is inserted into an armoring can 14 along with an electrolyte, and then the armoring can 14 is sealed to assemble a battery. It also includes an initial charge/discharge step of applying initial charge/discharge to the battery that has been assembled, and an aging step of applying aging to the battery after initial charging/discharging so that the half width of the X-ray diffraction peak (001) surface of the nickel hydroxide crystal at the positive electrode 11 is 0.60°or less while that of the (100) surface is 0.50°or higher. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
