| 发明名称 | Lithium secondary battery having improved lifespan characteristics | ||
| 摘要 | Disclosed is a lithium secondary battery having improved lifespan characteristics. More particularly, a lithium secondary battery comprising a cathode, an anode, a separator interposed between the cathode and anode, and an electrolyte, wherein the anode comprises lithium titanium oxide (LTO) as an anode active material, the electrolyte comprises a lithium salt; a non-aqueous-based solvent; and (a) a phosphate compound which can prevent gas generation during high-temperature storage, (b) a sulfonate compound which can reduce discharge resistance by forming a low-resistance SEI layer, or a mixture of the compound (a) and the compound (b), is disclosed. | ||
| 申请公布号 | US9472830(B2) | 申请公布日期 | 2016.10.18 |
| 申请号 | US201414560139 | 申请日期 | 2014.12.04 |
| 申请人 | LG Chem, Ltd. | 发明人 | Ahn Kyoung Ho;Lee Chul Haeng;Lee Jung Hoon;Yang Doo Kyung;Lim Young Min |
| 分类号 | H01M10/0567;H01M4/131;H01M4/485;H01M10/052;H01M10/0568;H01M10/0569;H01M10/0525 | 主分类号 | H01M10/0567 |
| 代理机构 | Lerner, David, Littenberg, Krumholz & Mentlik, LLP | 代理人 | Lerner, David, Littenberg, Krumholz & Mentlik, LLP |
| 主权项 | 1. A lithium secondary battery comprising a cathode, an anode, a separator interposed between the cathode and anode, and an electrolyte, wherein the anode comprises lithium titanium oxide (LTO) as an anode active material, and the electrolyte comprises a lithium salt; a non-aqueous-based solvent; and a mixture of (a) a phosphate compound which can prevent gas generation during high-temperature storage, and (b) a sulfonate compound which can reduce discharge resistance by forming a low-resistance SEI layer, wherein the mixture of the compound (a) and the compound (b) comprises the compound (a) and the compound (b) in a weight ratio of 1:1 to 1:5, wherein the sulfonate compound is a cyclic hetero compound represented by Formula 2 below: | ||
| 地址 | KR | ||