发明名称 |
SURFACE-MODIFIED SILICON NANOPARTICLES FOR NEGATIVE ELECTRODE ACTIVE MATERIAL, AND METHOD FOR MANUFACTURING SAME |
摘要 |
The present invention provides surface-modified silicon nanoparticles comprising a LixSiyOz top film and a carbon (C) coating layer on the surface of the nanoparticles by means of the addition of a lithium source and a carbon source during the manufacture of silicon nanoparticles or a post-treatment thereof. According to the present invention, the surface oxidation of the silicon nanoparticles, which would easily occur during a pulverization process, can be prevented. By using the silicon nanoparticles of which oxidation is prevented as a negative electrode material, problems related to decrease in capacity and electrolyte depletion resulting from an oxidized film can be mitigated. Thus, a deterioration in the properties of a lithium secondary battery can be prevented. |
申请公布号 |
US2015280223(A1) |
申请公布日期 |
2015.10.01 |
申请号 |
US201314437387 |
申请日期 |
2013.08.27 |
申请人 |
SAMSUNG FINE CHEMICALS CO., LTD |
发明人 |
Chang Dong Gyu;Lee Ju Myeung;Shim Kyu Eun;Yang Woo Young |
分类号 |
H01M4/36;H01M10/052 |
主分类号 |
H01M4/36 |
代理机构 |
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代理人 |
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主权项 |
1. A silicon nanoparticle comprising an oxide film of LixSiyOz [where x>0, y>0, 0≦z≦2(x+4y)] and a carbon (C) layer which are disposed on a surface thereof. |
地址 |
Ulsan KR |