| 发明名称 |
LITHIUM SECONDARY BATTERY WITH EXCELLENT PERFORMANCE |
| 摘要 |
Disclosed is a lithium secondary battery including an electrode assembly including a cathode, an anode, and a separator disposed between the cathode and the anode and an electrolyte, wherein the cathode includes a spinel-structure lithium manganese composite oxide represented by Formula 1 below as a cathode active material, and the lithium secondary battery has a charge cut-off voltage of 3.3 to 4 V and, when the charge cut-off voltage is reached, the anode has a potential of 0.75 to 1.545 V within a range within which a potential of the cathode does not exceed 4.95 V:;LixMyMn2-yO4-zAz (1)wherein 0.9≦x≦1.2, 0<y<2, and 0≦z<0.2;M is at least one element selected from the group consisting of Al, Mg, Ni, Co, Fe, Cr, V, Ti, Cu, B, Ca, Zn, Zr, Nb, Mo, Sr, Sb, W, Ti, and Bi; andA is at least one monovalent or divalent anion. |
| 申请公布号 |
US2014363714(A1) |
申请公布日期 |
2014.12.11 |
| 申请号 |
US201414465963 |
申请日期 |
2014.08.22 |
| 申请人 |
LG Chem, Ltd. |
发明人 |
Lim Soo Hyun;Lee Jae Hyun;Lee Youn Kyoung |
| 分类号 |
H01M4/505;H01M4/485;H01M4/525;H01M10/04;H01M10/052 |
主分类号 |
H01M4/505 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A lithium secondary battery comprising: an electrode assembly comprising a cathode, an anode, and a separator disposed between the cathode and the anode; and an electrolyte,
wherein the cathode comprises a spinel-structure lithium manganese composite oxide represented by Formula 1 below as a cathode active material, and the lithium secondary battery has a charge cut-off voltage of 3.3 to 4 V and, when the charge cut-off voltage is reached, the anode has a potential of 0.75 to 1.545 V within a range within which a potential of the cathode does not exceed 4.95 V:
LixMyMn2-yO4-zAz (1) wherein 0.9≦x≦1.2, 0<y<2, and 0≦z<0.2; M is at least one element selected from the group consisting of Al, Mg, Ni, Co, Fe, Cr, V, Ti, Cu, B, Ca, Zn, Zr, Nb, Mo, Sr, Sb, W, Ti, and Bi; and A is at least one monovalent or divalent anion. |
| 地址 |
Seoul KR |
