发明名称 |
Anode material of excellent conductivity and high power secondary battery employed with the same |
摘要 |
Provided is an anode material for an electrode mix comprising a carbon material and a lithium titanium oxide (LTO), wherein a ratio of an average particle size of LTO relative to that of the carbon material is in a range of 0.1 to 20%, and LTO is distributed mainly on a surface of the carbon material. The anode material of the present invention can prevent excessive formation of a SEI film, and is of a high capacity due to a high energy density and exhibits excellent output characteristics and rate characteristics. Further, it has superior electrolyte wettability which consequently results in improved battery performance and life characteristics. |
申请公布号 |
US9034521(B2) |
申请公布日期 |
2015.05.19 |
申请号 |
US200812665653 |
申请日期 |
2008.06.20 |
申请人 |
LG CHEM, LTD. |
发明人 |
Lee Eun Ju;Ryu Ji Heon;Kim Inchul;Lee HanHo |
分类号 |
H01M4/13;H01M10/0525;H01M4/131;H01M4/133;H01M4/1391;H01M4/1393;H01M4/36;H01M4/02;H01M4/485;H01M4/587 |
主分类号 |
H01M4/13 |
代理机构 |
Birch, Stewart, Kolasch & Birch, LLP |
代理人 |
Birch, Stewart, Kolasch & Birch, LLP |
主权项 |
1. An anode material for an electrode mix comprising:
a mesocarbon microbead (MCMB) as a carbon material; and a lithium titanium oxide (LTO); wherein the MCMB has an average particle size of 5 to 25 μm; the LTO has an average particle size of 0.01 to 5 μm; the average particle size of the LTO is in the range of 0.5 to 15% of the average particle size of the MCMB; a content of the LTO is 5% by weight, based on the total weight of the anode material; the LTO is distributed on at least 50% of the total surface area of the MCMB; and the LTO is distributed in the particulate phase on the MCMB surface, wherein said anode material is prepared by a method comprising the steps of: (i) homogeneously mixing the MCMB and LTO particles in the presence of a solvent; and (ii) drying and heat-treating the resulting mixture. |
地址 |
Seoul KR |