| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a lithium secondary battery manufacturing method preventing a reduction in battery capacity due to deposition of lithium to increase a service life and to stably ensure a high output. <P>SOLUTION: The lithium secondary battery manufacturing method includes the steps of preparing a lithium secondary battery in which an electrode body having a positive electrode active substance containing positive electrode and a negative electrode active substance containing negative electrode and a lithium ion containing electrolyte are contained in a battery case, performing a charging process on the prepared lithium secondary battery at a temperature within a room temperature range until a predetermined voltage value is obtained, retaining the lithium secondary battery for 12 to 80 hours at a temperature within the room temperature range or within a temperature range lower than the room temperature after the charging process and retaining the lithium secondary battery at least for 6 hours at a high temperature ranging from 40°C to 65°C after the retaining process performed at the temperature within the room temperature range or within the temperature range lower than the room temperature. <P>COPYRIGHT: (C)2010,JPO&INPIT |
