Patents by Inventor Im Goo Choi

Im Goo Choi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 9627688
    Abstract: The present disclosure provides an anode for a secondary battery, including: an electrode current collector; a first coating layer formed on the electrode current collector and including an anode active material, a first aqueous binder and a conducting material; and a second coating layer formed on the first coating layer and including a second nonaqueous binder. Since the anode of the present disclosure can reduce volume change of the anode active material, a lithium secondary battery including same may have improved cycle characteristics.
    Type: Grant
    Filed: May 29, 2014
    Date of Patent: April 18, 2017
    Assignee: LG Chem, Ltd.
    Inventors: Bong Hyun Jeong, Im Goo Choi, Byoung Bae Lee, Kyoung Hun Kim, Jang Bae Kim
  • Patent number: 9620780
    Abstract: The present disclosure provides an anode for a secondary battery, including: an electrode current collector; a first coating layer formed on the electrode current collector and including an anode active material, a first nonaqueous binder and a conducting material; and a second coating layer formed on the first coating layer and including a second nonaqueous binder. Since the anode of the present disclosure can reduce volume change of the anode active material, a lithium secondary battery including same may have improved cycle characteristics.
    Type: Grant
    Filed: May 30, 2014
    Date of Patent: April 11, 2017
    Assignee: LG Chem, Ltd.
    Inventors: Bong Hyun Jeong, Im Goo Choi, Byoung Bae Lee, Kyoung Hun Kim, Jang Bae Kim
  • Patent number: 9431659
    Abstract: Provided are an electrode binder for a secondary battery including an amine-based compound expressed by Chemical Formula 1 below and water-based binder particles including at least one carboxyl group as an end group, a method of preparing the same, and an electrode for a secondary battery including the electrode binder for a secondary battery
    Type: Grant
    Filed: July 25, 2014
    Date of Patent: August 30, 2016
    Assignee: LG CHEM, LTD.
    Inventors: Jang Bae Kim, Im Goo Choi, Byoung Bae Lee, Woo Ha Kim, Bong Hyun Jeong, Kyoung Hun Kim, Ji Hye Yang
  • Publication number: 20150194678
    Abstract: The present disclosure provides an anode for a secondary battery, including: an electrode current collector; a first coating layer formed on the electrode current collector and including an anode active material, a first nonaqueous binder and a conducting material; and a second coating layer formed on the first coating layer and including a second nonaqueous binder. Since the anode of the present disclosure can reduce volume change of the anode active material, a lithium secondary battery including same may have improved cycle characteristics.
    Type: Application
    Filed: May 30, 2014
    Publication date: July 9, 2015
    Applicant: LG CHEM, LTD.
    Inventors: Bong Hyun Jeong, Im Goo Choi, Byoung Bae Lee, Kyoung Hun Kim, Jang Bae Kim
  • Publication number: 20150194677
    Abstract: The present disclosure provides an anode for a secondary battery, including: an electrode current collector; a first coating layer formed on the electrode current collector and including an anode active material, a first aqueous binder and a conducting material; and a second coating layer formed on the first coating layer and including a second nonaqueous binder. Since the anode of the present disclosure can reduce volume change of the anode active material, a lithium secondary battery including same may have improved cycle characteristics.
    Type: Application
    Filed: May 29, 2014
    Publication date: July 9, 2015
    Applicant: LG Chem, Ltd.
    Inventors: Bong Hyun Jeong, Im Goo Choi, Byoung Bae Lee, Kyoung Hun Kim, Jang Bae Kim
  • Publication number: 20150030921
    Abstract: Provided are an electrode binder for a secondary battery including an amine-based compound expressed by Chemical Formula 1 below and water-based binder particles including at least one carboxyl group as an end group, a method of preparing the same, and an electrode for a secondary battery including the electrode binder for a secondary battery
    Type: Application
    Filed: July 25, 2014
    Publication date: January 29, 2015
    Inventors: Jang Bae KIM, Im Goo CHOI, Byoung Bae LEE, Woo Ha KIM, Bong Hyun JEONG, Kyoung Hun KIM, Ji Hye YANG
  • Publication number: 20090053608
    Abstract: 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.
    Type: Application
    Filed: June 25, 2008
    Publication date: February 26, 2009
    Inventors: Im Goo Choi, Seung Yeon Jang, Namsun Choi, Hyun-Kyung Sung, Dong Hwan Kim, Youngchan Jang, Hangi Jung
  • Publication number: 20080020282
    Abstract: The present invention is to provide anode active material hybridized with carbon nano fibers for lithium secondary battery prepared by following steps comprising, i) dispersing the nano size metal catalyst to the surface of anode material selected from graphite, amorphous silicon or the complex of graphite and amorphous silicon; and ii) growing the carbon nano fiber by chemical vapor deposition method, wherein carbon nano fibers are grown in a vine form and surround the surface of anode active material.
    Type: Application
    Filed: July 13, 2007
    Publication date: January 24, 2008
    Inventors: Dong Hwan Kim, Im Goo Choi, Seung Yeon Jang, Namsun Choi, Sang-Hyo Ryu, Youngchan Jang, Kwanyoung Lee