Patents by Inventor Gu-Hyun Chung

Gu-Hyun Chung 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: 9219272
    Abstract: A secondary particle and a lithium battery including the same are provided wherein the secondary particle includes a plurality of primary particles and each primary particle contains n polycyclic nano-sheets disposed upon one another. The polycyclic nano-sheets include hexagonal rings of six carbon atoms linked to each other, wherein a first carbon and a second carbon have a distance therebetween of L1. L2 is a distance between a third carbon and a fourth carbon, and the arrangement of the polycyclic nano-sheets is such that L1?L2. The secondary particle is used as a negative active material in the lithium battery, and the secondary particle contains pores, thereby allowing for effective intercalating and deintercalating of the lithium ions into the secondary particle to impart improved capacity and cycle lifespan.
    Type: Grant
    Filed: August 27, 2010
    Date of Patent: December 22, 2015
    Assignee: Samsung SDI Co., Ltd.
    Inventors: So-Ra Lee, Jae-Myung Kim, Kyu-Nam Joo, Tae-Sik Kim, Jong-Hee Lee, Ui-Song Do, Young-Su Kim, Beom-Kwon Kim, Deok-Hyun Kim, Gu-Hyun Chung, Chang-Su Shin, Yong-Mi Yu
  • Patent number: 8927154
    Abstract: A spherical primary particle of a lithium titanium oxide of which average diameter is in the range of about 1 to about 20 ?m, a method of preparing the spherical primary particle of the lithium titanium oxide, and a lithium rechargeable battery including the spherical primary particle of the lithium titanium oxide.
    Type: Grant
    Filed: October 5, 2010
    Date of Patent: January 6, 2015
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Jong-Hee Lee, Young-Su Kim, Jae-Myung Kim, Kyu-Nam Joo, So-Ra Lee, Deok-Hyun Kim, Gu-Hyun Chung, Beom-Kwon Kim, Yong-Mi Yu
  • Patent number: 8871388
    Abstract: A negative electrode for a lithium battery and a lithium battery including the negative electrode, the negative electrode including: a matrix of a Sn grain and a metal M grain; and a carbon-based material grown on the matrix.
    Type: Grant
    Filed: November 22, 2010
    Date of Patent: October 28, 2014
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Beom-Kwon Kim, Jae-Myung Kim, Kyu-Nam Joo, Jong-Hee Lee, So-Ra Lee, Young-Su Kim, Deok-Hyun Kim, Gu-Hyun Chung
  • Patent number: 8852804
    Abstract: A negative electrode for a lithium ion secondary battery and a lithium ion secondary battery, the negative electrode including a multilayer film, the multilayer film having three or more layers on a metal base, wherein the multilayer film includes one or more porous layers.
    Type: Grant
    Filed: December 10, 2010
    Date of Patent: October 7, 2014
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Kyu-Nam Joo, Beom-Kwon Kim, Jong-Hee Lee, Young-Su Kim, Deok-Hyun Kim, Gu-Hyun Chung, So-Ra Lee, Jae-Myung Kim
  • Patent number: 8815448
    Abstract: A negative active material containing super-conductive nanoparticles coated with a high capacity negative material and a lithium battery including the same are provided, wherein the super-conductive nanoparticles have a structure in which polycyclic nano-sheets are stacked upon one another along a direction perpendicular to a first plane. The polycyclic nano-sheets include hexagonal rings of six carbons atoms linked to each other, wherein a first carbon and a second carbon have a distance therebetween of L1. L2 is a distance between a third carbon and a fourth carbon, and the arrangement of the polycyclic nano-sheets is such that L1?L2. The super-conductive nanoparticle is used as a negative active material in a lithium battery, and the super-conductive nanoparticle increases the capacity, thereby improving the capacity and lifespan of the lithium battery.
    Type: Grant
    Filed: January 28, 2011
    Date of Patent: August 26, 2014
    Assignee: Samsung SDI Co., Ltd.
    Inventors: So-Ra Lee, Jae-Myung Kim, Kyu-Nam Joo, Jong-Hee Lee, Tae-Sik Kim, Ui-Song Do, Young-Su Kim, Deok-Hyun Kim, Gu-Hyun Chung, Beom-Kwon Kim, Yong-Mi Yu, Chang-Su Shin
  • Patent number: 8609282
    Abstract: An electrode conductive material, an electrode material including the electrode conductive material, an electrode including the electrode material, and a lithium battery including the electrode material. When the electrode conductive material is used, the amount of a conductive material required is decreased, capacity of the lithium battery is improved, and a charge and discharge rate is increased.
    Type: Grant
    Filed: November 30, 2010
    Date of Patent: December 17, 2013
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Deok-Hyun Kim, Jae-Myung Kim, Kyu-Nam Joo, So-Ra Lee, Jong-Hee Lee, Young-Su Kim, Gu-Hyun Chung, Beom-Kwon Kim
  • Patent number: 8592087
    Abstract: A negative active material, an electrode including the same, and a lithium battery including the electrode. The negative active material has no volumetric expansion and has high solubility with respect to lithium. In addition, the negative active material is in the form of spherical particles, and thus does not require a separate granulating process. Moreover, the negative active material may enhance the capacity of a lithium battery.
    Type: Grant
    Filed: December 17, 2010
    Date of Patent: November 26, 2013
    Assignee: Samsung SDI, Co., Ltd.
    Inventors: Deok-Hyun Kim, Jae-Myung Kim, Kyu-Nam Joo, So-Ra Lee, Jong-Hee Lee, Young-Su Kim, Gu-Hyun Chung, Beom-Kwon Kim
  • Patent number: 8586002
    Abstract: A lithium titanium oxide for an anode active material of a lithium rechargeable battery, wherein a X-ray diffraction (XRD) spectrum has a first peak of Li4Ti5O12 and a second peak, and A50-55/A78-80 is in a predetermined range, as a result of XRD analysis, where A78-80 is an Area of the first peak and A50-55 is an Area of the second peak in XRD.
    Type: Grant
    Filed: October 7, 2010
    Date of Patent: November 19, 2013
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Jong-Ho Lee, Young-Su Kim, Jae-Myung Kim, Kyu-Nam Joo, So-Ra Lee, Deok-Hyun Kim, Gu-Hyun Chung, Beom-Kwon Kim, Yong-Mi Yu
  • Patent number: 8530085
    Abstract: A negative electrode active material including nanometal particles and super-conductive nanoparticles and a lithium battery including the same.
    Type: Grant
    Filed: September 3, 2010
    Date of Patent: September 10, 2013
    Assignee: Samsung SDI Co., Ltd.
    Inventors: So-Ra Lee, Jae-Myung Kim, Kyu-Nam Joo, Sean Do, Jong-Hee Lee, Young-Su Kim, Deok-Hyun Kim, Gu-Hyun Chung, Beom-Kwon Kim, Yong-mi Yu
  • Patent number: 8318344
    Abstract: A negative electrode for a lithium battery includes an active material layer and a current collector. The active material layer has a plurality of crystal grains and the plurality of crystal grains include a plurality of pores. A first pore of the plurality of pores has a first length and a second length, the first length being the maximum length orthogonal to the current collector and the second length being the maximum length orthogonal to the first length, and the first length is greater than the second length.
    Type: Grant
    Filed: June 21, 2010
    Date of Patent: November 27, 2012
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Beom-Kwon Kim, Kyu-Nam Joo, Jae-Myung Kim, So-Ra Lee, Jong-Hee Lee, Young-Su Kim, Deok-Hyun Kim, Gu-Hyun Chung
  • Publication number: 20110305956
    Abstract: An electrode conductive material, an electrode material including the electrode conductive material, an electrode including the electrode material, and a lithium battery including the electrode material. When the electrode conductive material is used, the amount of a conductive material required is decreased, capacity of the lithium battery is improved, and a charge and discharge rate is increased.
    Type: Application
    Filed: November 30, 2010
    Publication date: December 15, 2011
    Applicant: Samsung SDI Co., Ltd.
    Inventors: Deok-Hyun Kim, Jae-Myung Kim, Kyu-Nam Joo, So-Ra Lee, Jong-Hee Lee, Young-Su Kim, Gu-Hyun Chung, Beom-Kwon Kim
  • Publication number: 20110305952
    Abstract: A negative active material, an electrode including the same, and a lithium battery including the electrode. The negative active material has no volumetric expansion and has high solubility with respect to lithium. In addition, the negative active material is in the form of spherical particles, and thus does not require a separate granulating process. Moreover, the negative active material may enhance the capacity of a lithium battery.
    Type: Application
    Filed: December 17, 2010
    Publication date: December 15, 2011
    Applicant: SAMSUNG SDI CO., LTD.
    Inventors: Deok-Hyun Kim, Jae-Myung Kim, Kyu-Nam Joo, So-Ra Lee, Jong-Hee Lee, Young-Su Kim, Gu-Hyun Chung, Beom-Kwon Kim
  • Publication number: 20110274970
    Abstract: A negative active material containing super-conductive nanoparticles coated with a high capacity negative material and a lithium battery including the same are provided, wherein the super-conductive nanoparticles have a structure in which polycyclic nano-sheets are stacked upon one another along a direction perpendicular to a first plane. The polycyclic nano-sheets include hexagonal rings of six carbons atoms linked to each other, wherein a first carbon and a second carbon have a distance therebetween of L1. L2 is a distance between a third carbon and a fourth carbon, and the arrangement of the polycyclic nano-sheets is such that L1?L2. The super-conductive nanoparticle is used as a negative active material in a lithium battery, and the super-conductive nanoparticle increases the capacity, thereby improving the capacity and lifespan of the lithium battery.
    Type: Application
    Filed: January 28, 2011
    Publication date: November 10, 2011
    Inventors: So-Ra Lee, Jae-Myung Kim, Kyu-Nam Joo, Jong-Hee Lee, Tae-Sik Kim, Ui-Song Do, Young-Su Kim, Deok-Hyun Kim, Gu-Hyun Chung, Beom-Kwon Kim, Yong-Mi Yu, Chang-Su Shin
  • Publication number: 20110195308
    Abstract: A secondary particle and a lithium battery including the same are provided wherein the secondary particle includes a plurality of primary particles and each primary particle contains n polycyclic nano-sheets disposed upon one another. The polycyclic nano-sheets include hexagonal rings of six carbon atoms linked to each other, wherein a first carbon and a second carbon have a distance therebetween of L1. L2 is a distance between a third carbon and a fourth carbon, and the arrangement of the polycyclic nano-sheets is such that L1?L2. The secondary particle is used as a negative active material in the lithium battery, and the secondary particle contains pores, thereby allowing for effective intercalating and deintercalating of the lithium ions into the secondary particle to impart improved capacity and cycle lifespan.
    Type: Application
    Filed: August 27, 2010
    Publication date: August 11, 2011
    Inventors: So-Ra Lee, Jae-Myung Kim, Kyu-Nam Joo, Tae-Sik Kim, Jong-Hee Lee, Ui-Song Do, Young-Su Kim, Beom-Kwon Kim, Deok-Hyun Kim, Gu-Hyun Chung, Chang-Su Shin, Yong-Mi Yu
  • Publication number: 20110183202
    Abstract: A negative electrode active material including nanometal particles and super-conductive nanoparticles and a lithium battery including the same.
    Type: Application
    Filed: September 3, 2010
    Publication date: July 28, 2011
    Inventors: So-Ra Lee, Jae-Myung Kim, Kyu-Nam Joo, Sean Do, Jong-Hee Lee, Young-Su Kim, Deok-Hyun Kim, Gu-Hyun Chung, Beom-Kwon Kim, Yong-Mi Yu
  • Publication number: 20110151322
    Abstract: A negative electrode for a lithium ion secondary battery and a lithium ion secondary battery, the negative electrode including a multilayer film, the multilayer film having three or more layers on a metal base, wherein the multilayer film includes one or more porous layers.
    Type: Application
    Filed: December 10, 2010
    Publication date: June 23, 2011
    Inventors: Kyu-Nam Joo, Beom-Kwon Kim, Jong-Hee Lee, Young-Su Kim, Deok-Hyun Kim, Gu-Hyun Chung, So-Ra Lee, Jae-Myung Kim
  • Publication number: 20110129733
    Abstract: A negative electrode for a lithium battery and a lithium battery including the negative electrode, the negative electrode including: a matrix of a Sn grain and a metal M grain; and a carbon-based material grown on the matrix.
    Type: Application
    Filed: November 22, 2010
    Publication date: June 2, 2011
    Applicant: Samsung SDI Co., Ltd
    Inventors: Beom-Kwon Kim, Jae-Myung Kim, Kyu-Nam Joo, Jong-Hee Lee, So-Ra Lee, Young-Su Kim, Deok-Hyun Kim, Gu-Hyun Chung
  • Publication number: 20110118123
    Abstract: A super-conductive nanoparticle, a super-conductive nanoparticle powder, and a lithium battery including the super-conductive nanoparticle powder.
    Type: Application
    Filed: October 14, 2010
    Publication date: May 19, 2011
    Applicant: Samsung SDI Co., Ltd.
    Inventors: So-Ra LEE, Jae-Myung KIM, Kyu-Nam JOO, Young-Su KIM, Deok-Hyun KIM, Gu-Hyun CHUNG
  • Publication number: 20110085965
    Abstract: A lithium titanium oxide for an anode active material of a lithium rechargeable battery, wherein a X-ray diffraction (XRD) spectrum has a first peak of Li4Ti5O12 and a second peak, and A50-55/A78-80 is in a predetermined range, as a result of XRD analysis, where A78-80 is an Area of the first peak and A50-55 is an Area of the second peak in XRD.
    Type: Application
    Filed: October 7, 2010
    Publication date: April 14, 2011
    Applicant: SAMSUNG SDI CO., LTD.
    Inventors: Jong-Hee LEE, Young-Su KIM, Jae-Myung KIM, Kyu-Nam JOO, So-Ra LEE, Deok-Hyun KIM, Gu-Hyun CHUNG, Beom-Kwon KIM, Yong-Mi YU
  • Publication number: 20110086275
    Abstract: A spherical primary particle of a lithium titanium oxide of which average diameter is in the range of about 1 to about 20 ?m, a method of preparing the spherical primary particle of the lithium titanium oxide, and a lithium rechargeable battery including the spherical primary particle of the lithium titanium oxide.
    Type: Application
    Filed: October 5, 2010
    Publication date: April 14, 2011
    Applicant: SAMSUNG SDI CO., LTD.,
    Inventors: Jong-Hee LEE, Young-Su KIM, Jae-Myung KIM, Kyu-Nam JOO, So-Ra LEE, Deok-Hyun KIM, Gu-Hyun CHUNG, Beom-Kwon KIM, Yong-Mi YU