发明名称 |
LITHIUM SECONDARY BATTERY OF IMPROVED STABILITY AND EXCELLENT LOW-TEMPERATURE POWER PROPERTY |
摘要 |
Provided is a lithium secondary battery which uses a lithium manganese metal oxide as a cathode active material and a non-graphitic carbon material as an anode active material, and based on the total weight of the electrolyte, contains 0.1 to 20% by weight of a salt represented by Formula I in a lithium salt-containing non-aqueous electrolyte: R4X+YZn−  (I) wherein R, X, Y, Z and n are as defined in the specification. The lithium secondary battery of the present invention can improve low-temperature properties of the battery by increasing the lithium ion-electrode reactivity and decreasing the electrode-interface resistance, via the formation of a charge double layer at the cathode-anode interface upon charging/discharging of the battery at a low temperature, and therefore can be preferably used in medium/large battery systems such as power sources for electric vehicles (EVs) and hybrid electric vehicles (HEVs) requiring operation under severe conditions. |
申请公布号 |
KR20070051383(A) |
申请公布日期 |
2007.05.18 |
申请号 |
KR20050108843 |
申请日期 |
2005.11.15 |
申请人 |
LG CHEM. LTD. |
发明人 |
KIM, BO HYUN;YU, JI SANG;KIM, SUNG WOO;HWANG, RA YOUNG;NAMGOONG, JOHN E. |
分类号 |
H01M4/131;H01M4/133;H01M4/50;H01M4/505;H01M4/52;H01M4/525;H01M4/58;H01M4/587;H01M10/0568 |
主分类号 |
H01M4/131 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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