发明名称 |
METHOD FOR CHARGING/DISCHARGING POSITIVE ELECTRODE ACTIVE MATERIAL IN A LITHIUM SECONDARY BATTERY, CHARGING/DISCHARGING SYSTEM PROVIDED WITH LITHIUM SECONDARY BATTERY AND VEHICLE, ELECTRONIC DEVICE, BATTERY MODULE, BATTERY PACK |
摘要 |
In a charge/discharge method for a positive-electrode active material in a lithium secondary battery, the lithium secondary battery includes a positive electrode containing a positive-electrode active material capable of occluding and releasing lithium ions, a negative electrode containing a negative-electrode active material capable of occluding and releasing lithium ions, a separator located between the positive electrode and the negative electrode, and an electrolyte having a lithium ion conductivity; and the positive-electrode active material contains a nickel-type lithium-containing complex oxide. The positive electrode, which has been charged, is discharged until having a first potential VDp1 which is no less than 2.7 V and no more than 3.4 V on a lithium metal basis, and then the discharge is finished. Owing to this, the charge/discharge cycle life can be improved while the capacity of the lithium secondary battery is secured. |
申请公布号 |
EP2477270(B1) |
申请公布日期 |
2014.01.29 |
申请号 |
EP20100816895 |
申请日期 |
2010.09.17 |
申请人 |
PANASONIC CORPORATION |
发明人 |
TAKEZAWA, HIDEHARU;IWAMOTO, KAZUYA;YAMAMOTO, TAISUKE;UGAJI, MASAYA;HIRAOKA, TATSUKI |
分类号 |
H01M10/44;H01M4/38;H01M4/525;H01M10/04;H01M10/052;H01M10/42;H01M10/48 |
主分类号 |
H01M10/44 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|