Patents by Inventor Chun-Gyoo Lee

Chun-Gyoo Lee 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: 9716264
    Abstract: An electrode for a lithium secondary battery includes a silicon-based alloy, and has a surface roughness of about 1 to about 10 ?m and a surface roughness deviation of 5 ?m or less. A method of manufacturing the electrode includes mixing an electrode composition, milling the composition, coating the milled composition on a current collector, and drying the milled composition. A lithium secondary battery includes the electrode.
    Type: Grant
    Filed: August 23, 2012
    Date of Patent: July 25, 2017
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Soon-Sung Suh, Sung-Hwan Moon, Yury Matulevich, Seung-Uk Kwon, Yo-Han Park, Chang-Ui Jeong, Jae-Hyuk Kim, Chun-Gyoo Lee, Jong-Seo Choi
  • Patent number: 9634325
    Abstract: A negative active material, a negative electrode, a lithium battery including the negative active material, and a method of manufacturing the negative active material, the negative electrode, and the lithium battery. The negative active material includes a silicon-based alloy including Si, Ti, Ni, and Fe components. The silicon-based alloy includes a Ti2Ni phase as an inactive phase and active silicon having a lower content than that of typical silicon-based alloys. The negative active material may improve discharge capacity and lifetime characteristics of lithium batteries.
    Type: Grant
    Filed: November 26, 2014
    Date of Patent: April 25, 2017
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Seung-Uk Kwon, Jae-Hyuk Kim, Soon-Sung Suh, Hee-Young Chu, Chang-Ui Jeong, Yo-Han Park, Yury Matulevich, Chun-Gyoo Lee
  • Patent number: 9306216
    Abstract: A negative active material for a rechargeable lithium battery includes a Si—Al—Fe alloy represented by Formula 1. The Si—Al—Fe alloy includes a Si phase and an alloy phase, and the alloy phase includes Si, Al, and Fe in a ratio of atomic percentages of about 3:3:2: xSi-yAl-zFe??Formula 1 wherein 50 at %?x?90 at %, 5 at %?y?30 at %, 5 at %?z?30 at %, and x+y+z=100 at %.
    Type: Grant
    Filed: November 6, 2012
    Date of Patent: April 5, 2016
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Sung-Hwan Moon, Jae-Hyuk Kim, Seung-Uk Kwon, Chang-Ui Jeong, Yo-Han Park, Soon-Sung Suh, Chun-Gyoo Lee, Jong-Seo Choi, Yury Matulevich
  • Patent number: 9236609
    Abstract: A positive active material for a rechargeable lithium battery includes a nickel-based composite oxide represented by the following Chemical Formula 1, wherein the nickel-based composite oxide includes an over lithiated oxide and non-continuous portions of a lithium nickel cobalt manganese oxide on a surface of the over lithiated oxide. LiaNibCocMndO2??Chemical Formula 1 where 1<a<1.6, 0.1<b<0.7, 0.1<c<0.4, and 0.1<d<0.7.
    Type: Grant
    Filed: August 9, 2013
    Date of Patent: January 12, 2016
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Han-Eol Park, Byung-Joo Chung, Chang-Wook Kim, Chun-Gyoo Lee, Jong-Seo Choi, Yoon-Chang Kim
  • Patent number: 9178210
    Abstract: A negative active material for a lithium battery with an improved cycle characteristic and capacity retention rate, and the negative active material comprises a plurality of particles comprising a plurality of first particles comprising Si, Ti, and Ni; and composite particles comprising a plurality of second particles in which at least one element selected from the group consisting of Cu, Fe, Ni, Au, Ag, Pd, Cr, Mn, Ti, B, and P is partially or completely deposited on surface(s) of other of first particles, a method of preparing the negative active material, and a lithium battery including a negative electrode including the negative active material.
    Type: Grant
    Filed: January 31, 2013
    Date of Patent: November 3, 2015
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Yury Matulevich, Sung-Hwan Moon, Jong-Seo Choi, Jae-Hyuk Kim, Chun-Gyoo Lee, Seung-Uk Kwon, Yo-Han Park, Soon-Sung Suh, Chang-Ui Jeong
  • Patent number: 9123955
    Abstract: A negative active material having controlled particle size distribution of silicon nanoparticles in a silicon-based alloy, a lithium battery including the negative active material, and a method of manufacturing the negative active material are disclosed. The negative active material may improve capacity and lifespan characteristics by inhibiting (or reducing) volumetric expansion of the silicon-based alloy. The negative active material may include a silicon-based alloy including: a silicon alloy-based matrix; and silicon nanoparticles distributed in the silicon alloy-based matrix, wherein a particle size distribution of the silicon nanoparticles satisfies D10?10 nm and D90?75 nm.
    Type: Grant
    Filed: January 15, 2013
    Date of Patent: September 1, 2015
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Seung-Uk Kwon, Sung-Hwan Moon, Chun-Gyoo Lee, Jae-Hyuk Kim, Soon-Sung Suh, Chang-Ui Jeong, Yo-Han Park, Yury Matulevich, Jong-Seo Choi
  • Publication number: 20150214544
    Abstract: A negative active material, a negative electrode, a lithium battery including the negative active material, and a method of manufacturing the negative active material, the negative electrode, and the lithium battery. The negative active material includes a silicon-based alloy including Si, Ti, Ni, and Fe components. The silicon-based alloy includes a Ti2Ni phase as an inactive phase and active silicon having a lower content than that of typical silicon-based alloys. The negative active material may improve discharge capacity and lifetime characteristics of lithium batteries.
    Type: Application
    Filed: November 26, 2014
    Publication date: July 30, 2015
    Inventors: Seung-Uk Kwon, Jae-Hyuk Kim, Soon-Sung Suh, Hee-Young Chu, Chang-Ui Jeong, Yo-Han Park, Yury Matulevich, Chun-Gyoo Lee
  • Patent number: 8940196
    Abstract: A silicon-based shape memory alloy negative active material includes a silicon-based material precipitated on a Ni2Mn1-XZX shape memory alloy basic material. In the silicon-based shape memory alloy negative active material, X satisfies the relationship 0?X?1 and Z is one of Al, Ga, In, Sn, or Sb.
    Type: Grant
    Filed: August 9, 2012
    Date of Patent: January 27, 2015
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Byung-Joo Chung, Chun-Gyoo Lee
  • Publication number: 20150020878
    Abstract: An anti-reflective coating film is formed from a coating solution composition that includes a silane-based precursor. When measured via Fourier Transform Infrared (FT-IR) Spectroscopy using a wavelength of 1064 nm, the coating solution composition exhibits a peak intensity ratio IB/IA and a peak intensity ratio IC/IA of equal to or greater than 0.47, respectively. The peak intensity IB is in a range of about 930 cm?1 to about 960 cm?1, the peak intensity IA is in a range of about 1110 cm?1 to about 1130 cm?1, and the peak intensity IC is in a range of about 1020 cm?1 to about 1050 cm?1. A solar cell including the anti-reflective coating film, and a method of predicting the strength of the anti-reflective coating film for the solar cell have been disclosed.
    Type: Application
    Filed: January 6, 2014
    Publication date: January 22, 2015
    Applicant: SAMSUNG SDI CO., LTD.
    Inventors: Soo-Youn Park, Sang-Hyun Eom, Do-Young Park, Hye-Jin Park, Sung-Su Kim, Chun-Gyoo Lee, Jong-Hwan Park, Ji-Won Lee
  • Patent number: 8697282
    Abstract: A negative electrode for a lithium rechargeable battery includes a current collector, and a negative active material layer on the current collector, the negative active material layer including a silicon-based active material, a carbon-based active material, and an aqueous additive including an aqueous binder and an agent for increasing viscosity, the silicon-based active material being coated with an organic binder, wherein the aqueous additive is between portions of the silicon-based active material, between portions of the carbon-based active material, or between the silicon-based active material and the carbon-based active material.
    Type: Grant
    Filed: September 23, 2011
    Date of Patent: April 15, 2014
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Chun-Gyoo Lee, Jae-Myung Kim, Chang-Wook Kim, Byung-Joo Chung, Han-Eol Park
  • Publication number: 20140065483
    Abstract: A positive active material for a rechargeable lithium battery includes a nickel-based composite oxide represented by the following Chemical Formula 1, wherein the nickel-based composite oxide includes an over lithiated oxide and non-continuous portions of a lithium nickel cobalt manganese oxide on a surface of the over lithiated oxide. LiaNibCocMndO2 ??Chemical Formula 1 where 1<a<1.6, 0.1<b<0.7, 0.1<c<0.4, and 0.1<d<0.7.
    Type: Application
    Filed: August 9, 2013
    Publication date: March 6, 2014
    Applicant: SAMSUNG SDI CO., LTD.
    Inventors: Han-Eol Park, Byung-Joo Chung, Chang-Wook Kim, Chun-Gyoo Lee, Jong-Seo Choi, Yoon-Chang Kim
  • Publication number: 20140038051
    Abstract: A negative active material for a lithium battery with an improved cycle characteristic and capacity retention rate, and the negative active material comprises a plurality of particles comprising a plurality of first particles comprising Si, Ti, and Ni; and composite particles comprising a plurality of second particles in which at least one element selected from the group consisting of Cu, Fe, Ni, Au, Ag, Pd, Cr, Mn, Ti, B, and P is partially or completely deposited on surface(s) of other of first particles, a method of preparing the negative active material, and a lithium battery including a negative electrode including the negative active material.
    Type: Application
    Filed: January 31, 2013
    Publication date: February 6, 2014
    Applicant: SAMSUNG SDI CO., LTD.
    Inventors: Yury Matulevich, Sung-Hwan Moon, Jong-Seo Choi, Jae-Hyun Kim, Chun-Gyoo Lee, Seung-Uk Kwon, Yo-Han Park, Soon-Sung Suh, Chang-Ui Jeong
  • Publication number: 20140023927
    Abstract: A silicon alloy-based negative active material includes a particle including a core including a silicon alloy-based material, and a coating layer including an organic binder.
    Type: Application
    Filed: January 22, 2013
    Publication date: January 23, 2014
    Inventors: Yo-Han PARK, Chun-Gyoo LEE, Sung-Hwan MOON, Jae-Hyuk KIM, Seung-Uk KWON, Yury MATULEVICH, Chang-Ui JEONG, Jong-Seo CHOI
  • Publication number: 20130266865
    Abstract: A negative active material having controlled particle size distribution of silicon nanoparticles in a silicon-based alloy, a lithium battery including the negative active material, and a method of manufacturing the negative active material are disclosed. The negative active material may improve capacity and lifespan characteristics by inhibiting (or reducing) volumetric expansion of the silicon-based alloy. The negative active material may include a silicon-based alloy including: a silicon alloy-based matrix; and silicon nanoparticles distributed in the silicon alloy-based matrix, wherein a particle size distribution of the silicon nanoparticles satisfies D10?10 nm and D90?75 nm.
    Type: Application
    Filed: January 15, 2013
    Publication date: October 10, 2013
    Applicant: SAMSUNG SDI CO., LTD.
    Inventors: Seung-Uk Kwon, Sung-Hwan Moon, Chun-Gyoo Lee, Jae-Hyuk Kim, Soon-Sung Suh, Chang-Ui Jeong, Yo-Han Park, Yury Matulevich, Jong-Seo Choi
  • Publication number: 20130216912
    Abstract: An electrode for a lithium secondary battery includes a silicon-based alloy, and has a surface roughness of about 1 to about 10 ?m and a surface roughness deviation of 5 ?m or less. A method of manufacturing the electrode includes mixing an electrode composition, milling the composition, coating the milled composition on a current collector, and drying the milled composition. A lithium secondary battery includes the electrode.
    Type: Application
    Filed: August 23, 2012
    Publication date: August 22, 2013
    Inventors: Soon-Sung Suh, Sung-Hwan Moon, Yury Matulevich, Seung-Uk Kwon, Yo-Han Park, Chang-Ui Jeong, Jae-Hyuk Kim, Chun-Gyoo Lee, Jong-Seo Choi
  • Publication number: 20130202967
    Abstract: A negative active material for a rechargeable lithium battery includes a matrix including an Si—X based alloy, where X is not Si and is selected from alkali metals, alkaline-earth metals, Group 13 elements, Group 14 elements, Group 15 elements, Group 16 elements, transition elements, rare earth elements, or combinations thereof; silicon dispersed in the matrix; and oxygen in the negative active material, the oxygen being included at 20 at % or less based on the total number of atoms in the negative active material. A rechargeable lithium battery includes the negative active material.
    Type: Application
    Filed: July 12, 2012
    Publication date: August 8, 2013
    Inventors: Jae-Hyuk Kim, Sung-Hwan Moon, Seung-Uk Kwon, Soon-Sung Suh, Chang-Ui Jeong, Yo-Han Park, Chun-Gyoo Lee, Yury Matulevich, Jong-Seo Choi
  • Publication number: 20130130112
    Abstract: A silicon-based shape memory alloy negative active material includes a silicon-based material precipitated on a Ni2Mn1-XZX shape memory alloy basic material. In the silicon-based shape memory alloy negative active material, X satisfies the relationship 0?X?1 and Z is one of Al, Ga, In, Sn, or Sb.
    Type: Application
    Filed: August 9, 2012
    Publication date: May 23, 2013
    Inventors: Byung-Joo CHUNG, Chun-Gyoo Lee
  • Publication number: 20120270103
    Abstract: A negative electrode for a lithium rechargeable battery includes a current collector, and a negative active material layer on the current collector, the negative active material layer including a silicon-based active material, a carbon-based active material, and an aqueous additive including an aqueous binder and an agent for increasing viscosity, the silicon-based active material being coated with an organic binder, wherein the aqueous additive is between portions of the silicon-based active material, between portions of the carbon-based active material, or between the silicon-based active material and the carbon-based active material.
    Type: Application
    Filed: September 23, 2011
    Publication date: October 25, 2012
    Inventors: Chun-Gyoo Lee, Jae-Myung Kim, Chang-Wook Kim, Byung-Joo Chung, Han-Eol Park
  • Patent number: 8093810
    Abstract: A plasma display device embodying a touch panel function utilizing infrared rays that are generated when displaying an image and that are emitted in a uniform distribution manner in a display area. The plasma display device includes: a plasma display panel (PDP) for displaying an image; a chassis base attached to and supporting the PDP; an infrared ray sensor at a front surface or a rear surface of the PDP for detecting a change in amount of infrared rays emitted from the PDP; and a controller for receiving a detection signal and determining a position of the change in amount of infrared rays, the position of the change in amount of infrared rays defining a touch position.
    Type: Grant
    Filed: February 12, 2009
    Date of Patent: January 10, 2012
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Sang-Hoon Yim, Chun-Gyoo Lee, Jong-Han Rhee, Yu-Jeong Cho
  • Patent number: 8049423
    Abstract: A PDP includes a first substrate and a second substrate disposed to face each other, a plurality of address electrodes on the first substrate, a plurality of display electrodes on the second substrate, the display electrodes facing the first substrate and crossing the address electrodes, a first dielectric layer on the second substrate, the display electrodes being between the first dielectric layer and the second substrate, a first protective layer on the dielectric layer, the first protective layer including a low work function material, and a second protective layer on the first protective layer, the second protective layer including a high work function material and openings exposing the first protective layer in regions corresponding to the display electrodes.
    Type: Grant
    Filed: July 23, 2009
    Date of Patent: November 1, 2011
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Chun-Gyoo Lee, Seong-Chan Bae, Sang-Hun Jang, Yong-Shik Hwang