发明授权
US08741254B2 Method of preparing bundle type silicon nanorod composite through electroless etching process using metal ions and anode active material for lithium secondary cells comprising the same
有权
通过使用金属离子和包含该锂二次电池的负极活性材料的无电蚀刻工艺制备束型硅纳米棒复合材料的方法
- 专利标题： Method of preparing bundle type silicon nanorod composite through electroless etching process using metal ions and anode active material for lithium secondary cells comprising the same
- 专利标题（中）： 通过使用金属离子和包含该锂二次电池的负极活性材料的无电蚀刻工艺制备束型硅纳米棒复合材料的方法
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申请号： US12535216申请日： 2009-08-04
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公开(公告)号： US08741254B2公开(公告)日： 2014-06-03
- 发明人: Joong Kee Lee , Byung Won Cho , Joo Man Woo , Hyung Sun Kim , Kyung Yoon Chung , Won Young Chang , Sang Ok Kim , Sang Eun Park
- 申请人： Joong Kee Lee , Byung Won Cho , Joo Man Woo , Hyung Sun Kim , Kyung Yoon Chung , Won Young Chang , Sang Ok Kim , Sang Eun Park
- 申请人地址： KR Seoul
- 专利权人： Korea Institute of Science and Technology
- 当前专利权人： Korea Institute of Science and Technology
- 当前专利权人地址： KR Seoul
- 代理机构： Frommer Lawrence & Haug, LLP
- 代理商 Ronald R. Santucci
- 优先权： KR10-2009-0046373 20090527
- 主分类号： C01B33/02
- IPC分类号： C01B33/02
摘要：
The present invention relates to a method of preparing a porous silicon nanorod structure composed of columnar bundles having a diameter of 50-100 nm and a length of 2-5 μm, and a lithium secondary cell using the porous silicon nanorod structure as an anode active material. The present invention provides a high-capacity and high-efficiency anode active material for lithium secondary cells, which can overcome the low conductivity of silicon and improve the electrode deterioration attributable to volume expansion because it is prepared by electrodepositing the surface of silicon powder with metal and simultaneously etching the silicon powder partially using hydrofluoric acid.
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