Patents by Inventor Kyou-Yoon Sheem

Kyou-Yoon Sheem 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: 8440352
    Abstract: A negative electrode for a lithium secondary battery of the present invention includes a negative active material including a plate-shaped carbon powder particle agglomerated in a primary structure in which the plate-shaped particle is oriented in a plane direction and laminated. Fine carbon powder particles are then agglomerated to form a secondary structure on the surface of the primary structure such that the resulting particles include fine pores formed on the surface.
    Type: Grant
    Filed: December 16, 2011
    Date of Patent: May 14, 2013
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Kyou-Yoon Sheem, Sang-Jin Kim, Joon-Sup Kim, Sung-Soo Kim, Yoshiaki Nitta, Sang-Min Lee, Han-Su Kim
  • Patent number: 8241794
    Abstract: The present invention relates to an active material for a rechargeable lithium battery and a rechargeable lithium battery including the same. The active material includes an active material and a fiber-shaped or tube-shaped carbon conductive material attached to the surface of the active material. The active material includes a conductive shell including a fiber-shaped or tube-shaped carbon conductive material and increases discharge capacity due to improved conductivity and improves cycle-life efficiency by maintaining paths between active material particles during charge and discharge cycles.
    Type: Grant
    Filed: December 16, 2011
    Date of Patent: August 14, 2012
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Kyou-Yoon Sheem, Sung-Soo Kim, Joon-Sup Kim, Yong-Mook Kang, Min-Seok Sung, Young-Hee Lee
  • Publication number: 20120094180
    Abstract: The present invention relates to an active material for a rechargeable lithium battery and a rechargeable lithium battery including the same. The active material includes an active material and a fiber-shaped or tube-shaped carbon conductive material attached to the surface of the active material. The active material includes a conductive shell including a fiber-shaped or tube-shaped carbon conductive material and increases discharge capacity due to improved conductivity and improves cycle-life efficiency by maintaining paths between active material particles during charge and discharge cycles.
    Type: Application
    Filed: December 16, 2011
    Publication date: April 19, 2012
    Applicant: SAMSUNG SDI CO., LTD
    Inventors: Kyou-Yoon Sheem, Sung-Soo Kim, Joon-Sup Kim, Yong-Mook Kang, Min-Seok Sung, Young-Hee Lee
  • Publication number: 20120094175
    Abstract: A negative electrode for a lithium secondary battery of the present invention includes a negative active material including a plate-shaped carbon powder particle agglomerated in a primary structure in which the plate-shaped particle is oriented in a plane direction and laminated. Fine carbon powder particles are then agglomerated to form a secondary structure on the surface of the primary structure such that the resulting particles include fine pores formed on the surface.
    Type: Application
    Filed: December 16, 2011
    Publication date: April 19, 2012
    Applicant: SAMSUNG SDI CO., LTD
    Inventors: Kyou-Yoon SHEEM, Sang-Jin KIM, Joon-Sup KIM, Sung-Soo KIM, Yoshiaki Nitta, Sang-Min LEE, Han-Su KIM
  • Patent number: 8110168
    Abstract: A negative electrode for a lithium secondary battery of the present invention includes a negative active material including a plate-shaped carbon powder particle agglomerated in a primary structure in which the plate-shaped particle is oriented in a plane direction and laminated. Fine carbon powder particles are then agglomerated to form a secondary structure on the surface of the primary structure such that the resulting particles include fine pores formed on the surface.
    Type: Grant
    Filed: July 7, 2010
    Date of Patent: February 7, 2012
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Kyou-Yoon Sheem, Sang-Jin Kim, Joon-Sup Kim, Sung-Soo Kim, Yoshiaki Nitta, Sang-Min Lee, Han-Su Kim
  • Patent number: 8105716
    Abstract: The present invention relates to an active material for a rechargeable lithium battery and a rechargeable lithium battery including the same. The active material includes an active material and a fiber-shaped or tube-shaped carbon conductive material attached to the surface of the active material. The active material includes a conductive shell including a fiber-shaped or tube-shaped carbon conductive material and increases discharge capacity due to improved conductivity and improves cycle-life efficiency by maintaining paths between active material particles during charge and discharge cycles.
    Type: Grant
    Filed: November 30, 2006
    Date of Patent: January 31, 2012
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Kyou-Yoon Sheem, Sung-Soo Kim, Joon-Sup Kim, Yong-Mook Kang, Min-Seok Sung, Young-Hee Lee
  • Patent number: 8048568
    Abstract: Disclosed is a negative active material for a rechargeable lithium battery including ultra-fine particles comprising an element which is capable of alloying with lithium. The particles have a diameter of 1 nm to 200 nm, a Raman shift of 480 cm?1 to 520 cm?1 measured by Raman Spectroscopy, and a full width at half-maximum of 10 cm?1 to 30 cm?1.
    Type: Grant
    Filed: January 6, 2004
    Date of Patent: November 1, 2011
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Kyou-Yoon Sheem, Keiko Matsubara, Toshiaki Tsuno, Akira Takamuku
  • Patent number: 8026003
    Abstract: A negative active material of a non-aqueous electrolyte battery includes a compound represented by formula 1: LixMyVzO2+d??(1) where 0.1?x?2.5, 0<y?0.5, 0.5?z?1.5, 0?d?0.5, and M is at least one element selected from the group consisting of Al, Cr, Mo, Ti, W, and Zr.
    Type: Grant
    Filed: August 19, 2004
    Date of Patent: September 27, 2011
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Sung-Soo Kim, Kyou-Yoon Sheem, Sang-Min Lee, Sang-Jin Kim, Joon-Sup Kim, Bok-Hwan Jung, Goo-Jin Jeong
  • Publication number: 20100273050
    Abstract: A negative electrode for a lithium secondary battery of the present invention includes a negative active material including a plate-shaped carbon powder particle agglomerated in a primary structure in which the plate-shaped particle is oriented in a plane direction and laminated. Fine carbon powder particles are then agglomerated to form a secondary structure on the surface of the primary structure such that the resulting particles include fine pores formed on the surface.
    Type: Application
    Filed: July 7, 2010
    Publication date: October 28, 2010
    Inventors: Kyou-Yoon Sheem, Sang-Jin Kim, Joon-Sup Kim, Sung-Soo Kim, Yoshiaki Nitta, Sang-Min Lee, Han-Su Kim
  • Patent number: 7781103
    Abstract: A negative electrode for a lithium secondary battery of the present invention includes a negative active material including a plate-shaped carbon powder particle agglomerated in a primary structure in which the plate-shaped particle is oriented in a plane direction and laminated. Fine carbon powder particles are then agglomerated to form a secondary structure on the surface of the primary structure such that the resulting particles include fine pores formed on the surface.
    Type: Grant
    Filed: April 12, 2005
    Date of Patent: August 24, 2010
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Kyou-Yoon Sheem, Sang-Jin Kim, Joon-Sup Kim, Sung-Soo Kim, Yoshiaki Nitta, Sang-Min Lee, Han-Su Kim
  • Patent number: 7485395
    Abstract: A negative active material of a rechargeable lithium battery includes a crystalline carbon core having an intensity ratio Ra I(1360)/I(1580) of a Raman Spectroscopy peak intensity I(1360) at a (1360) plane to an Raman Spectroscopy peak intensity I(1580) at a (1580) plane of 0.01 to 0.45 and a shell with a turbostratic or half-onion ring structure coated on the core, the shell including crystalline micro-particles and a semi-crystalline carbon, the shell having an intensity ratio Ra I(1360)/I(1580) of a Raman Spectroscopy peak intensity I(1360) at a (1360) plane to a Raman Spectroscopy peak intensity I(1580) at a (1580) plane of 0.46 to 1.5.
    Type: Grant
    Filed: December 24, 2003
    Date of Patent: February 3, 2009
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Sang-Jin Kim, Kyou-Yoon Sheem, Joon-Sup Kim
  • Patent number: 7452632
    Abstract: A negative active material for a rechargeable lithium battery, a method for making the negative active material, and a rechargeable lithium battery including a carbonaceous material, which is capable of reversibly intercalating and deintercalating lithium, and particles of a metal or a metal compound or mixtures thereof, distributed in the carbonaceous material, the metal or the metal compound being capable of forming an alloy with lithium during electrochemical charging and discharging.
    Type: Grant
    Filed: May 19, 2004
    Date of Patent: November 18, 2008
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Sang-Min Lee, Sung-Soo Kim, Kyou-Yoon Sheem, Sang-Jin Kim, Joon-Sup Kim, Seong-Mo Oh
  • Publication number: 20080038635
    Abstract: The present invention relates to an active material for a rechargeable lithium battery and a rechargeable lithium battery including the same. The active material includes an active material and a fiber-shaped or tube-shaped carbon conductive material attached to the surface of the active material. The active material includes a conductive shell including a fiber-shaped or tube-shaped carbon conductive material and increases discharge capacity due to improved conductivity and improves cycle-life efficiency by maintaining paths between active material particles during charge and discharge cycles.
    Type: Application
    Filed: November 30, 2006
    Publication date: February 14, 2008
    Inventors: Kyou-Yoon Sheem, Sung-Soo Kim, Joon-Sup Kim, Yong-Mook Kang, Min-Seok Sung, Young-Hee Lee
  • Patent number: 7326497
    Abstract: Disclosed is a negative electrode for a lithium secondary battery which is prepared by mixing graphite powder with a binder. The negative electrode comprises graphite with an intensity ratio I(110)/I(002) of 0.5 or more wherein I(002) is an X-ray diffraction peak intensity I(002) at a (002) plane and I(110) is an X-ray diffraction peak intensity I(110) at a (110) plane The negative electrode for a lithium secondary battery has enhanced discharge capacity and cycle life characteristics.
    Type: Grant
    Filed: December 23, 2002
    Date of Patent: February 5, 2008
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Keiko Matsubara, Toshiaki Tsuno, Akira Takamuku, Kyou-Yoon Sheem
  • Publication number: 20070059233
    Abstract: Provided are carbon materials having a high specific surface area and high conductivity, and a preparation method thereof. The carbon material includes pores on the surface and inside, with channels connecting the pores to one another. Such carbon material has a high specific surface area and high conductivity, and can be used in a number of diverse fields. Exemplary uses include use as an electric double layer capacitor (EDLC), as a catalyst supporter of a fuel cell, as an electrode conductive material of a rechargeable lithium battery, and as an adsorption agent.
    Type: Application
    Filed: August 31, 2006
    Publication date: March 15, 2007
    Inventors: Kyou-Yoon Sheem, Sung-Soo Kim, Young-Hee Lee, Young-Seak Lee
  • Patent number: 7074521
    Abstract: A negative active material for a rechargeable lithium battery is provided. The negative active material includes a core and a carbon shell formed around the core. The core includes a crystalline carbon, an amorphous carbon or a mixture thereof, and the carbon shell includes an amorphous carbon with a metal selected from a transition metal, a semi-metal, an alkali metal or an alkali earth metal.
    Type: Grant
    Filed: February 24, 2000
    Date of Patent: July 11, 2006
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Kyou-Yoon Sheem, Sang-Jin Kim, Sang-Young Yoon
  • Publication number: 20050266314
    Abstract: A negative electrode for a lithium secondary battery of the present invention includes a negative active material including a plate-shaped carbon powder particle agglomerated in a primary structure in which the plate-shaped particle is oriented in a plane direction and laminated. Fine carbon powder particles are then agglomerated to form a secondary structure on the surface of the primary structure such that the resulting particles include fine pores formed on the surface.
    Type: Application
    Filed: April 12, 2005
    Publication date: December 1, 2005
    Inventors: Kyou-Yoon Sheem, Sang-Jin Kim, Joon-Sup Kim, Sung-Soo Kim, Yoshiaki Nitta, Sang-Min Lee, Han-Su Kim
  • Publication number: 20050164090
    Abstract: The present invention relates to a negative active material for a lithium secondary battery which includes a metal oxide-based core material and a carbon material disposed on the surface of the core material, a method of preparing the same, and a lithium secondary battery including the negative active material. According to the present invention, a negative active material for a lithium secondary battery is prepared by coating a core material having good energy density per unit volume with a carbon material, thereby improving the cycle life and charge-discharge characteristics of a lithium secondary battery at a high rate.
    Type: Application
    Filed: January 26, 2005
    Publication date: July 28, 2005
    Inventors: Joon-Sup Kim, Sung-Soo Kim, Sang-Jin Kim, Sang-Min Lee, Kyou-Yoon Sheem, Goo-Jin Jeong
  • Patent number: 6887622
    Abstract: Disclosed is carbonaceous active material for a lithium-ion secondary battery. Conducting a differential thermal analysis on the carbonaceous active material results in the displaying of at least two exothermic peaks overlapping to form shoulders.
    Type: Grant
    Filed: July 29, 1999
    Date of Patent: May 3, 2005
    Assignee: Samsung Display Devices Co., Ltd.
    Inventors: Jae-yul Ryu, Sang-young Yoon, Kyou-yoon Sheem, Sang-jin Kim, Wan-uk Choi
  • Publication number: 20050079417
    Abstract: A negative active material of a non-aqueous electrolyte battery includes a compound represented by formula 1: LixMyVzO2+d??(1) where 0.1?x?2.5, 0<y?0.5, 0.5?z?1.5, 0?d?0.5, and M is at least one element selected from the group consisting of Al, Cr, Mo, Ti, W, and Zr.
    Type: Application
    Filed: August 19, 2004
    Publication date: April 14, 2005
    Applicant: Samsung SDI Co., Ltd.
    Inventors: Sung-Soo Kim, Kyou-Yoon Sheem, Sang-Min Lee, Sang-Jin Kim, Joon-Sup Kim, Bok-Hwan Jung, Goo-Jin Jeong