Patents by Inventor Beom-Kwon Kim

Beom-Kwon Kim 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).

  • Publication number: 20200350557
    Abstract: A negative electrode for a rechargeable lithium battery, includes: a sequential laminate having a negative current collector, a negative active material layer, and a negative functional layer, the negative functional layer having generally flake-shaped polyethylene particles; wherein the negative active material layer includes a negative active material including a crystalline carbonaceous material having a ratio I(002)/I(110) of an X-ray diffraction peak intensity at a (002) plane to an X-ray diffraction peak intensity at a (110) plane of the crystalline carbonaceous material ranging from about 30:1 to about 110:1.
    Type: Application
    Filed: May 1, 2020
    Publication date: November 5, 2020
    Inventors: Jaehwan Ha, Kijun Kim, Beom Kwon Kim, Junghyun Nam, Heeeun Yoo, Yeonhee Yoon, Kyuseo Lee, Dongmyung Lee
  • Patent number: 10305094
    Abstract: Disclosed are a negative active material for a rechargeable lithium battery including a silicon-based material and graphite, wherein an average particle diameter (D50) of the graphite may range from about 5 ?m to about 15 ?m, and a Raman peak intensity ratio (Id/Ig) of the graphite may range from about 0.1 to about 0.9, and a negative electrode and a rechargeable lithium battery including the same.
    Type: Grant
    Filed: April 22, 2014
    Date of Patent: May 28, 2019
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Beom-Kwon Kim, Woon-Suk Jang, Dong-Ho Son, Ki-Jun Kim
  • Patent number: 9966594
    Abstract: A negative active material, a method of preparing the same, and a lithium battery including the negative active material are disclosed. The negative active material includes a silicon-based nanocore and a first amorphous carbonaceous coating layer that is formed of carbonized organic material and that is uniformly and continuously formed on a surface of the silicon-based nanocore, whereby irreversible capacity losses due to volumetric expansion/contraction caused when a lithium battery is charged and discharged are compensated and cycle lifetime characteristics are enhanced.
    Type: Grant
    Filed: May 4, 2012
    Date of Patent: May 8, 2018
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Beom-Kwon Kim, Jae-Myung Kim, So-Ra Lee, Chang-Su Shin, Ui-Song Do
  • Patent number: 9525170
    Abstract: A negative active material and a lithium battery including the negative active material. The negative active material includes a non-carbonaceous nanoparticle capable of doping or undoping lithium; and a crystalline carbonaceous nano-sheet, wherein at least one of the non-carbonaceous nanoparticle and the crystalline carbonaceous nano-sheet includes a first amorphous carbonaceous coating layer on its surface, and thus an electrical conductivity thereof is improved. In addition, a lithium battery including the negative active material has an improved efficiency and lifetime.
    Type: Grant
    Filed: August 3, 2012
    Date of Patent: December 20, 2016
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Ui-Song Do, Chang-Su Shin, So-Ra Lee, Beom-Kwon Kim, Jae-Myung Kim
  • Patent number: 9350015
    Abstract: In one aspect, an anode active material is provided. The anode active material may include a crystalline carbon-based material that includes a core having a lattice spacing d002 of about 0.35 nm or more, and titanium-based oxide particles.
    Type: Grant
    Filed: March 8, 2012
    Date of Patent: May 24, 2016
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Chang-Su Shin, Jae-Myung Kim, So-Ra Lee, Ui-Song Do, Beom-Kwon Kim
  • Patent number: 9252427
    Abstract: Provided are a negative active material, a method of preparing the same, and a lithium battery including the negative active material, wherein the negative active material includes a carbonaceous material that has a peak with respect to a surface (002) at a Bragg angle 2? of 26.4°±0.1° in an X-ray diffraction spectrum, has a full width at half maximum of the peak with respect to the surface (002) of about 0.2° to about 0.6°, has an interlayer spacing (d002) of the surface (002) measured by X-ray diffraction of about 3.36 ? to about 3.37 ?, and has a crystallite size measured from the full width at half maximum of the peak with respect to the surface (002) of about 10 nm to about 45 nm, wherein the carbonaceous material includes a core; and an amorphous carbon layer disposed on a non-cracked surface portion of the core.
    Type: Grant
    Filed: March 22, 2012
    Date of Patent: February 2, 2016
    Assignee: SAMSUNG SDI CO., LTD.
    Inventors: So-Ra Lee, Chang-Su Shin, Ui-Song Do, Beom-Kwon Kim, Jae-Myung Kim
  • 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: 9178213
    Abstract: In an aspect, a negative active material, a method of preparing the negative active material, and a lithium battery including the negative active material are provided. The method of preparing the negative active material may increase pulverizing efficiency in pulverizing a silicon-based bulky particle into a nano-size silicon-based primary particle and decrease a capacity loss of the obtained negative active material. The nano-size negative active material has excellent crystalline characteristics, high capacity, and high initial efficiency, due to a decrease in surface oxidation and surface damage.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: November 3, 2015
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Beom-Kwon Kim, Jae-Myung Kim, So-Ra Lee, Ui-Song Do, Chang-Su Shin
  • Patent number: 9029016
    Abstract: Provided are a negative active material, a method of preparing the same, and a lithium battery including the negative active material. The negative active material includes a carbonaceous core that has a sulfur content of about 10 ppm to 900 ppm; and an amorphous carbon layer continuously formed on a surface of the carbonaceous core, wherein the carbonaceous core has a crystalloid plate structure, and a crystallite size measured from a full width at half maximum of the peak with respect to the surface (002) of about 10 nm to about 45 nm in an X-ray diffraction spectrum of the carbonaceous core. The lithium battery including a negative electrode including the negative active material has improved capacity characteristics and ring lifetime characteristics.
    Type: Grant
    Filed: March 22, 2012
    Date of Patent: May 12, 2015
    Assignee: Samsung SDI Co., Ltd.
    Inventors: So-Ra Lee, Chang-Su Shin, Ui-Song Do, Beom-Kwon Kim, Jae-Myung Kim
  • Patent number: 8999577
    Abstract: Provided are a negative active material, a method of preparing the same, and a lithium battery including the negative active material. The negative active material includes a carbonaceous core that has a sulfur content of about 10 ppm to 900 ppm; and an amorphous carbon layer continuously formed on a surface of the carbonaceous core, wherein the carbonaceous core has a crystalloid plate structure, and a crystallite size measured from a full width at half maximum of the peak with respect to the surface (002) of about 10 nm to about 45 nm in an X-ray diffraction spectrum of the carbonaceous core. The lithium battery including a negative electrode including the negative active material has improved capacity characteristics and ring lifetime characteristics.
    Type: Grant
    Filed: March 22, 2012
    Date of Patent: April 7, 2015
    Assignee: Samsung SDI Co., Ltd.
    Inventors: So-Ra Lee, Chang-Su Shin, Ui-Song Do, Beom-Kwon Kim, Jae-Myung Kim
  • 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
  • Publication number: 20140349180
    Abstract: Disclosed are a negative active material for a rechargeable lithium battery including a silicon-based material and graphite, wherein an average particle diameter (D50) of the graphite may range from about 5 ?m to about 15 ?m, and a Raman peak intensity ratio (Id/Ig) of the graphite may range from about 0.1 to about 0.9, and a negative electrode and a rechargeable lithium battery including the same.
    Type: Application
    Filed: April 22, 2014
    Publication date: November 27, 2014
    Applicant: Samsung SDI Co., Ltd.
    Inventors: Beom-Kwon Kim, Woon-Suk Jang, Dong-Ho Son, Ki-Jun Kim
  • 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
  • Publication number: 20140106230
    Abstract: In an aspect, a negative active material, a method of preparing the negative active material, and a lithium battery including the negative active material are provided. The method of preparing the negative active material may increase pulverizing efficiency in pulverizing a silicon-based bulky particle into a nano-size silicon-based primary particle and decrease a capacity loss of the obtained negative active material. The nano-size negative active material has excellent crystalline characteristics, high capacity, and high initial efficiency, due to a decrease in surface oxidation and surface damage.
    Type: Application
    Filed: March 14, 2013
    Publication date: April 17, 2014
    Applicant: SAMSUNG SDI CO., LTD.
    Inventors: Beom-Kwon Kim, Jae-Myung Kim, So-Ra Lee, Ui-Song Do, 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: 8563178
    Abstract: A negative electrode for a lithium (Li) secondary battery, a method of forming the same, and a secondary battery, the negative electrode including a tin (Sn) based current collector layer; and a multilayer film on the Sn based current collector, the multilayer film having two or more layers, wherein the multilayer film includes at least one porous layer.
    Type: Grant
    Filed: September 21, 2010
    Date of Patent: October 22, 2013
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Kyu-Nam Joo, Tae-Sik Kim, Beom-Kwon Kim