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    Catalyst for preparing carbon nanotubes by controlling its apparent density
    2.
    发明授权
    Catalyst for preparing carbon nanotubes by controlling its apparent density 有权
    通过控制其表观密度来制备碳纳米管的催化剂

    公开(公告)号：US08398894B2

    公开(公告)日：2013-03-19

    申请号：US12642084

    申请日：2009-12-18

    申请人： Namsun Choi ,  Hyun-Kyung Sung ,  Dong Hwan Kim ,  Sang-Hyo Ryu ,  Wan Sung Lee ,  Youngchan Jang

    发明人： Namsun Choi ,  Hyun-Kyung Sung ,  Dong Hwan Kim ,  Sang-Hyo Ryu ,  Wan Sung Lee ,  Youngchan Jang

    IPC分类号： H01B1/00

    CPC分类号： H01B1/24 ,  B01J21/185 ,  B01J23/78 ,  B01J35/0026 ,  B01J37/009 ,  B01J37/03 ,  B82Y30/00 ,  B82Y40/00 ,  C01B32/15

    摘要： The present invention relates to a catalyst for preparing a carbon nanotube having desired apparent density by controlling the adding amount of co-precipitating agent in the process of preparing a catalyst in order to obtain a catalyst having a minimized particle size. More specifically, this invention relates to a catalyst for preparing carbon nanotube having desired apparent density based upon the reverse-correlation between the amount of co-precipitating agent added in the process of preparing catalyst and the apparent density of catalyst. The carbon nanotube prepared by the catalyst having low apparent density shows excellent electrical conductivity and highly uniformed dispersion in the polymer/carbon nanotube composite.

    摘要翻译： 本发明涉及通过在制备催化剂的过程中控制共沉淀剂的添加量以获得具有最小粒度的催化剂来制备具有所需表观密度的碳纳米管的催化剂。 更具体地，本发明涉及一种制备具有所需表观密度的碳纳米管的催化剂，其基于在制备催化剂的方法中加入的共沉淀剂的量与催化剂的表观密度之间的反相关性。 通过具有低表观密度的催化剂制备的碳纳米管在聚合物/碳纳米管复合材料中显示出优异的导电性和高度均匀的分散体。

    Process For Preparing Catalyst Composition For The Synthesis Of Carbon Nanotube With High Yields Using The Spray Pyrolysis Method
    4.
    发明申请
    Process For Preparing Catalyst Composition For The Synthesis Of Carbon Nanotube With High Yields Using The Spray Pyrolysis Method 有权
    使用喷雾热解法制备高产率碳纳米管制备催化剂组合物的方法

    公开(公告)号：US20120040186A1

    公开(公告)日：2012-02-16

    申请号：US13105663

    申请日：2011-05-11

    申请人： Sang-Hyo Ryu ,  Hyun-Kyung Sung ,  Namsun Choi ,  Wan Sung Lee ,  Dong Hwan Kim ,  Youngchan Jang

    发明人： Sang-Hyo Ryu ,  Hyun-Kyung Sung ,  Namsun Choi ,  Wan Sung Lee ,  Dong Hwan Kim ,  Youngchan Jang

    IPC分类号： D01F9/12 ,  B01J37/08 ,  B01J21/02 ,  B82Y30/00

    CPC分类号： B82Y40/00 ,  B01J23/745 ,  B01J23/75 ,  B01J23/78 ,  B01J23/8872 ,  B01J35/002 ,  B01J37/082 ,  B82Y30/00 ,  D01F9/12 ,  D01F9/127 ,  D01F9/1273 ,  Y10S977/74 ,  Y10S977/742 ,  Y10S977/84 ,  Y10S977/842 ,  Y10T428/298

    摘要： The present invention relates to a process for preparing catalyst composition for the synthesis of carbon nanotube with high yields using the spray pyrolysis method. More particularly, this invention relates to a process for preparing catalyst composition for the synthesis of carbon nanotube comprising the steps of i) dissolving multi-component metal precursors of catalyst composition in de-ionized water; ii) spraying obtained catalytic metal precursor solution into the high temperature reactor by gas atomization method; iii) forming the catalyst composition powder by pyrolysis of gas atomized material; and iv) obtaining the catalyst composition powder, wherein said catalyst composition comprises i) main catalyst selected from Fe or Co, ii) Al, iii) optional co-catalyst at least one selected from Ni, Cu, Sn, Mo, Cr, Mn, V, W, Ti, Si, Zr or Y, iv) inactive support of Mg. Further, the catalyst composition prepared by this invention has a very low apparent density of 0.01˜0.50 g/ml as well as the catalyst composition affords high production yield (1,000˜1,800%) of carbon nanotube.

    摘要翻译： 本发明涉及使用喷雾热解法制备高收率合成碳纳米管的催化剂组合物的方法。 更具体地说，本发明涉及制备用于合成碳纳米管的催化剂组合物的方法，包括以下步骤：i）将催化剂组合物的多组分金属前体溶解在去离子水中; ii）通过气体雾化法将得到的催化金属前体溶液喷涂到高温反应器中; iii）通过气体雾化材料的热解形成催化剂组合物粉末; 和iv）获得催化剂组合物粉末，其中所述催化剂组合物包含i）选自Fe或Co的主催化剂，ii）Al，iii）任选的助催化剂，选自Ni，Cu，Sn，Mo，Cr，Mn ，V，W，Ti，Si，Zr或Y，iv）Mg的非活性载体。 此外，本发明制备的催化剂组合物具有非常低的表观密度为0.01〜0.50g / ml，催化剂组合物提供了高生产率（1,000〜1300％）的碳纳米管。

    Anode active material hybridizing carbon nanofiber for lithium secondary battery
    10.
    发明申请
    Anode active material hybridizing carbon nanofiber for lithium secondary battery 审中-公开
    用于锂二次电池的阳极活性材料杂化碳纳米纤维

    公开(公告)号：US20090053608A1

    公开(公告)日：2009-02-26

    申请号：US12213830

    申请日：2008-06-25

    申请人： Im Goo Choi ,  Seung Yeon Jang ,  Namsun Choi ,  Hyun-Kyung Sung ,  Dong Hwan Kim ,  Youngchan Jang ,  Hangi Jung

    发明人： Im Goo Choi ,  Seung Yeon Jang ,  Namsun Choi ,  Hyun-Kyung Sung ,  Dong Hwan Kim ,  Youngchan Jang ,  Hangi Jung

    IPC分类号： H01M4/40

    CPC分类号： H01M4/0428 ,  H01M4/133 ,  H01M4/1393 ,  H01M4/583 ,  H01M4/661 ,  H01M10/052

    摘要： The present invention provides a composite silicon anode material hybridizing carbon nanofiber for lithium secondary battery prepared by the steps comprising: i) preparing a support made by amorphous silicon alloy after processing amorphous silicon and metal; ii) dispersing the catalyst selected from Fe, Co, Ni, Cu, Mg, Mn, Ti, Sn, Si, Zr, Zn, Ge, Pb or In on the surface of said support made by amorphous silicon alloy; and iii) growing the carbon nanofiber using a carbon source selected from carbon monoxide, methane, acetylene or ethylene on said support by a chemical vapor deposition method, wherein the amount of grown carbon nanofiber is 1˜110 wt % of the amount of said support.

    摘要翻译： 本发明提供了一种复合硅阳极材料，其与用于锂二次电池的碳纳米纤维杂交，所述复合硅阳极材料通过以下步骤制备，所述步骤包括：i）在加工非晶硅和金属之后制备由非晶硅合金制成的载体; ii）在由非晶硅合金制成的所述载体的表面上分散选自Fe，Co，Ni，Cu，Mg，Mn，Ti，Sn，Si，Zr，Zn，Ge，Pb或In中的催化剂; 以及iii）通过化学气相沉积法在所述载体上使用选自一氧化碳，甲烷，乙炔或乙烯的碳源生长碳纳米纤维，其中生长的碳纳米纤维的量为所述载体的量的1〜110重量％ 。