Patents by Inventor Jae-Hou Nah

Jae-Hou Nah 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: 10923721
    Abstract: A negative electrode for a rechargeable lithium battery may include a negative electrode active mass layer including a negative active material having a Young's modulus of about 10 GPa to about 35 GPa and having an active mass density of greater than or equal to about 1.65 g/cc and a current density of greater than or equal to about 3.2 mAh/cm2.
    Type: Grant
    Filed: October 19, 2016
    Date of Patent: February 16, 2021
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Seongjae Ko, Jae Hou Nah
  • Patent number: 10128504
    Abstract: A negative active material for a rechargeable lithium battery, including crystalline carbon-based material particles, for which a maximum volume % in a graph of a particle size distribution on a volume basis is about 20 volume % or more.
    Type: Grant
    Filed: October 4, 2016
    Date of Patent: November 13, 2018
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Seongjae Ko, Jae Hou Nah, Ga-Young Jo
  • Patent number: 9905848
    Abstract: A negative active material for a rechargeable lithium battery includes a carbon-based material and has a specific surface area of less than or equal to about 1 m2/g, and an area ratio D/G of a ID peak at about 1350 cm?1 to about 1370 cm?1 and a G peak at about 1570 cm?1 to about 1620 cm?1 of less than or equal to about 0.3 in a Raman spectrum analysis and includes a carbon-based material.
    Type: Grant
    Filed: August 17, 2016
    Date of Patent: February 27, 2018
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Seongjae Ko, Jae Hou Nah
  • Patent number: 9905842
    Abstract: In an aspect, a negative active material for a rechargeable lithium battery that includes a silicon-based active material including a core including carbon and SiOx particles (0.5?x?1.5); and a coating layer surrounding the core, and a negative electrode and a rechargeable lithium battery including the same are provided.
    Type: Grant
    Filed: March 13, 2013
    Date of Patent: February 27, 2018
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Bong-Chull Kim, Jae-Hou Nah, Joon-Sup Kim, Kyeong-Min Jeong
  • Publication number: 20170133681
    Abstract: A negative electrode for a rechargeable lithium battery may include a negative electrode active mass layer including a negative active material having a Young's modulus of about 10 GPa to about 35 GPa and having an active mass density of greater than or equal to about 1.65 g/cc and a current density of greater than or equal to about 3.2 mAh/cm2.
    Type: Application
    Filed: October 19, 2016
    Publication date: May 11, 2017
    Inventors: Seongjae KO, Jae Hou NAH
  • Publication number: 20170133679
    Abstract: A negative active material for a rechargeable lithium battery includes a carbon-based material and has a specific surface area of less than or equal to about 1 m2/g, and an area ratio D/G of a ID peak at about 1350 cm+1 to about 1370 cm?1 and a G peak at about 1570 cm+1 to about 1620 cm?1 of less than or equal to about 0.3 in a Raman spectrum analysis and includes a carbon-based material.
    Type: Application
    Filed: August 17, 2016
    Publication date: May 11, 2017
    Inventors: Seongjae Ko, Jae Hou Nah
  • Publication number: 20170117546
    Abstract: A negative active material for a rechargeable lithium battery, including crystalline carbon-based material particles, for which a maximum volume % in a graph of a particle size distribution on a volume basis is about 20 volume % or more.
    Type: Application
    Filed: October 4, 2016
    Publication date: April 27, 2017
    Inventors: Seongjae KO, Jae Hou NAH, Ga-Young JO
  • Publication number: 20140050983
    Abstract: In an aspect, a negative active material for a rechargeable lithium battery that includes a silicon-based active material including a core including carbon and SiOx particles (0.5?x?1.5); and a coating layer surrounding the core, and a negative electrode and a rechargeable lithium battery including the same are provided.
    Type: Application
    Filed: March 13, 2013
    Publication date: February 20, 2014
    Applicant: SAMSUNG SDI CO., LTD.
    Inventors: Bong-Chull Kim, Jae-Hou Nah, Joon-Sup Kim, Kyeong-Min Jeong
  • Patent number: 8313539
    Abstract: Disclosed is a method of preparing a negative electrode for a rechargeable lithium battery. The steps include vacuum-drying a negative electrode precursor, the negative electrode precursor comprising a negative active material and an aqueous binder. The steps may further include vacuum-drying a lithium cell battery that includes a vacuum-dried negative electrode.
    Type: Grant
    Filed: November 6, 2006
    Date of Patent: November 20, 2012
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Young-Jun Kim, Jae-Hou Nah
  • Patent number: 7255966
    Abstract: A non-aqueous electrolyte for a lithium secondary battery is provided. The electrolyte comprises a lithium salt, a non-aqueous solvent, and an organic compound selected from the group consisting of compounds represented by Formulae (1) to (6): wherein R1 to R12 are each independently selected from the group consisting of primary, secondary, and tertiary alkyl groups, alkenyl groups, and aryl groups; X is hydrogen or halogen; and n and m are numerical values ranging from 0 to 3.
    Type: Grant
    Filed: July 6, 2005
    Date of Patent: August 14, 2007
    Assignee: Samsung SDI Co., Ltd
    Inventors: Jin-Sung Kim, Meen-Seon Paik, Jung-Joon Park, Young-Gyu Kim, Jong-Seob Kim, Hak-Soo Kim, Sang-Jun Lee, Jae-Hou Nah, Sang-Moon Hwang, Chan-Jung Kim
  • Patent number: 7241536
    Abstract: A non-aqueous electrolyte for a lithium secondary battery is provided. The electrolyte comprises a lithium salt, a non-aqueous solvent, and an organic compound selected from the group consisting of compounds represented by Formulae (1) to (6): wherein R1 to R12 are each independently selected from the group consisting of primary, secondary, and tertiary alkyl groups, alkenyl groups, and aryl groups; X is hydrogen or halogen; and n and m are numerical values ranging from 0 to 3.
    Type: Grant
    Filed: May 8, 2002
    Date of Patent: July 10, 2007
    Assignee: Samsung SDI Co., Ltd
    Inventors: Jin-Sung Kim, Meen-Seon Paik, Jung-Joon Park, Young-Gyu Kim, Jong-Seob Kim, Hak-Soo Kim, Sang-Jun Lee, Jae-Hou Nah, Sang-Moon Hwang, Chan-Jung Kim
  • Publication number: 20070051010
    Abstract: Disclosed is a method of preparing a negative electrode for a rechargeable lithium battery. The steps include vacuum-drying a negative electrode precursor, the negative electrode precursor comprising a negative active material and an aqueous binder. The steps may further include vacuum-drying a lithium cell battery that includes a vacuum-dried negative electrode.
    Type: Application
    Filed: November 6, 2006
    Publication date: March 8, 2007
    Inventors: Young-Jun Kim, Jae-Hou Nah
  • Publication number: 20050244719
    Abstract: A non-aqueous electrolyte for a lithium secondary battery is provided. The electrolyte comprises a lithium salt, a non-aqueous solvent, and an organic compound selected from the group consisting of compounds represented by Formulae (1) to (6): wherein R1 to R12 are each independently selected from the group consisting of primary, secondary, and tertiary alkyl groups, alkenyl groups, and aryl groups; X is hydrogen or halogen; and n and m are numerical values ranging from 0 to 3.
    Type: Application
    Filed: July 6, 2005
    Publication date: November 3, 2005
    Inventors: Jin-Sung Kim, Meen-Seon Paik, Jung-Joon Park, Young-Gyu Kim, Jong-Seob Kim, Hak-Soo Kim, Sang-Jun Lee, Jae-Hou Nah, Sang-Moon Hwang, Chan-Jung Kim
  • Publication number: 20040253517
    Abstract: Disclosed is a method of preparing a negative electrode for a rechargeable lithium battery. The steps include vacuum-drying a negative electrode precursor, the negative electrode precursor comprising a negative active material and an aqueous binder. The steps may further include vacuum-drying a lithium cell battery that includes a vacuum-dried negative electrode.
    Type: Application
    Filed: January 29, 2004
    Publication date: December 16, 2004
    Inventors: Young-Jun Kim, Jae-Hou Nah
  • Patent number: 6620544
    Abstract: A sealed battery includes a can for receiving an electric generator, a sealing member crimped on an opening of the can and connected to one of a positive electrode and a negative electrode of the electric generator, a gasket disposed between the can and the sealing member, a cover cap disposed on the sealing member with an insulating member disposed between the cover cap and the sealing member, a current control member disposed between the cover cap and the sealing member to cut-off a flow of current when a temperature of the battery is increased above an allowable level, and a shock absorber disposed between the cover cap and the current control member to prevent shock from being directly transmitted to the current control member.
    Type: Grant
    Filed: July 19, 2000
    Date of Patent: September 16, 2003
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Jeong-Soon Shin, Ki-Woong Jang, Jae-Hou Nah, Jin-Kyung Kim
  • Publication number: 20020197537
    Abstract: A non-aqueous electrolyte for a lithium secondary battery is provided.
    Type: Application
    Filed: May 8, 2002
    Publication date: December 26, 2002
    Inventors: Jin-Sung Kim, Meen-Seon Paik, Jung-Joon Park, Young-Gyu Kim, Jong-Seob Kim, Hak-Soo Kim, Sang-Jun Lee, Jae-Hou Nah, Sang-Moon Hwang, Chan-Jung Kim