Patents by Inventor Woon-Suk Jang

Woon-Suk Jang 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: 10637060
    Abstract: Disclosed herein is a negative electrode for a rechargeable lithium battery including a negative active material and a binder, wherein the binder includes carboxylmethyl cellulose and a styrene-butadiene rubber, and the carboxylmethyl cellulose has a weight average molecular weight of about 300,000 g/mol to about 500,000 g/mol, and a rechargeable lithium battery including the same.
    Type: Grant
    Filed: May 11, 2015
    Date of Patent: April 28, 2020
    Assignee: Samsung SDI Co., Ltd
    Inventors: Woon-Suk Jang, Jeung-Gi Moon, Yu-Hyun Kim, Young-San Ko
  • 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: 10050276
    Abstract: Disclosed is a negative electrode for a rechargeable lithium battery that includes a negative active material and a binder, wherein the binder includes carboxymethyl cellulose, polyvinyl alcohol, and a styrene-butadiene rubber, and a rechargeable lithium battery including the same.
    Type: Grant
    Filed: November 17, 2014
    Date of Patent: August 14, 2018
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Woon-Suk Jang, Yu-Hyun Kim
  • Patent number: 9287563
    Abstract: An electrode for a lithium secondary battery includes an electrode active material, a conductive agent, and a polyurethane-based compound, and has pores having an average diameter of about 2 to about 20 nm. A lithium secondary battery includes the electrode.
    Type: Grant
    Filed: September 24, 2011
    Date of Patent: March 15, 2016
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Chae-Woong Cho, Woon-Suk Jang, Bum-Jin Chang, Ki-Jun Kim, Kwi-Seok Choi, Maeng-Eun Lee
  • Patent number: 9203076
    Abstract: An electrode for a lithium secondary battery, the electrode including: an electrode active material; and a composite including a clay and a polymer intercalated between layers of the clay, a method of manufacturing the electrode, and a lithium secondary battery including the electrode.
    Type: Grant
    Filed: December 5, 2013
    Date of Patent: December 1, 2015
    Assignee: SAMSUNG SDI CO., LTD.
    Inventors: Bum-Jin Chang, Woon-Suk Jang, Chae-Woong Cho, Seung-Hun Han, Ki-Jun Kim, Kwi-Seok Choi
  • Publication number: 20150340697
    Abstract: Disclosed herein is a negative electrode for a rechargeable lithium battery including a negative active material and a binder, wherein the binder includes carboxylmethyl cellulose and a styrene-butadiene rubber, and the carboxylmethyl cellulose has a weight average molecular weight of about 300,000 g/mol to about 500,000 g/mol, and a rechargeable lithium battery including the same.
    Type: Application
    Filed: May 11, 2015
    Publication date: November 26, 2015
    Inventors: Woon-Suk Jang, Jeung-Gi Moon, Yu-Hyun Kim, Young-San Ko
  • Publication number: 20150200397
    Abstract: Disclosed is a negative electrode for a rechargeable lithium battery that includes a negative active material and a binder, wherein the binder includes carboxymethyl cellulose, polyvinyl alcohol, and a styrene-butadiene rubber, and a rechargeable lithium battery including the same.
    Type: Application
    Filed: November 17, 2014
    Publication date: July 16, 2015
    Inventors: Woon-Suk Jang, Yu-Hyun Kim
  • Patent number: 8945433
    Abstract: A conductive agent having a nonzero surface charge, a positive electrode slurry composition of a lithium secondary battery, including the conductive agent, and a lithium secondary battery including the conductive agent.
    Type: Grant
    Filed: January 28, 2011
    Date of Patent: February 3, 2015
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Chae-Woong Cho, Woon-Suk Jang, Bum-Jin Chang, Ki-Jun Kim, Kwi-Seok Choi
  • 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: 8877379
    Abstract: Disclosed is a positive active material for a rechargeable lithium battery and a rechargeable lithium battery including the same, and the positive active material includes a carbon material having a structure with “n” polycyclic nano sheets, wherein “n” is an integer of 1 to 30 with hexagonal rings having six carbon atoms condensed and substantially aligned in a plane, the polycyclic nano sheets are laminated in a vertical direction to the plane; and a lithium-containing olivine-based compound attached to the surface of the carbon material is formed with a carbon-coating layer on its surface.
    Type: Grant
    Filed: September 23, 2011
    Date of Patent: November 4, 2014
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Woon-Suk Jang, Chae-Woong Cho, Bum-Jin Chang, Ki-Jun Kim, Kwi-Seok Choi
  • Publication number: 20140093772
    Abstract: An electrode for a lithium secondary battery, the electrode including: an electrode active material; and a composite including a clay and a polymer intercalated between layers of the clay, a method of manufacturing the electrode, and a lithium secondary battery including the electrode.
    Type: Application
    Filed: December 5, 2013
    Publication date: April 3, 2014
    Applicant: Samsung SDI Co., Ltd.
    Inventors: Bum-Jin CHANG, Woon-Suk JANG, Chae-Woong CHO, Seung-Hun HAN, Ki-Jun KIM, Kwi-Seok CHOI
  • Patent number: 8673496
    Abstract: An electrode composition containing a first conducting agent and a second conducting agent, an electrode for lithium secondary batteries, a method of manufacturing the electrode, and a lithium secondary battery including the electrode. The second conducting agent is an agglomerate formed of a conducting material and a fluorine-based polymer.
    Type: Grant
    Filed: December 30, 2010
    Date of Patent: March 18, 2014
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Chae-Woong Cho, Woon-Suk Jang, Bum-Jin Chang, Ki-Jun Kim, Kwi-Seok Choi
  • Publication number: 20130011733
    Abstract: An electrode for a lithium secondary battery, the electrode including: an electrode active material; and a composite including a clay and a polymer intercalated between layers of the clay, a method of manufacturing the electrode, and a lithium secondary battery including the electrode.
    Type: Application
    Filed: July 2, 2012
    Publication date: January 10, 2013
    Applicant: Samsung SDI Co., Ltd.
    Inventors: Bum-Jin CHANG, Woon-Suk JANG, Chae-Woong CHO, Seung-Hun HAN, Ki-Jun KIM, Kwi-Seok CHOI
  • Publication number: 20120189915
    Abstract: An electrode for a lithium secondary battery includes an electrode active material, a conductive agent, and a polyurethane-based compound, and has pores having an average diameter of about 2 to about 20 nm. A lithium secondary battery includes the electrode.
    Type: Application
    Filed: September 24, 2011
    Publication date: July 26, 2012
    Inventors: Chae-Woong Cho, Woon-Suk Jang, Bum-Jin Chang, Ki-Jun Kim, Kwi-Seok Choi, Maeng-Eun Lee
  • Publication number: 20120141874
    Abstract: Disclosed is a positive active material for a rechargeable lithium battery and a rechargeable lithium battery including the same, and the positive active material includes a carbon material having a structure with “n” polycyclic nano sheets, wherein “n” is an integer of 1 to 30 with hexagonal rings having six carbon atoms condensed and substantially aligned in a plane, the polycyclic nano sheets are laminated in a vertical direction to the plane; and a lithium-containing olivine-based compound attached to the surface of the carbon material is formed with a carbon-coating layer on its surface.
    Type: Application
    Filed: September 23, 2011
    Publication date: June 7, 2012
    Applicant: SAMSUNG SDI, CO., LTD.
    Inventors: Woon-Suk Jang, Chae-Woong Cho, Bum-Jin Chang, Ki-Jun Kim, Kwi-Seok Choi
  • Publication number: 20110281166
    Abstract: An electrode composition containing a first conducting agent and a second conducting agent, an electrode for lithium secondary batteries, a method of manufacturing the electrode, and a lithium secondary battery including the electrode. The second conducting agent is an agglomerate formed of a conducting material and a fluorine-based polymer.
    Type: Application
    Filed: December 30, 2010
    Publication date: November 17, 2011
    Inventors: Chae-Woong Cho, Woon-Suk Jang, Bum-Jin Chang, Ki-Jun Kim, Kwi-Seok Choi
  • Publication number: 20110269015
    Abstract: A conductive agent having a nonzero surface charge, a positive electrode slurry composition of a lithium secondary battery, including the conductive agent, and a lithium secondary battery including the conductive agent.
    Type: Application
    Filed: January 28, 2011
    Publication date: November 3, 2011
    Applicant: Samsung SDI Co., Ltd.
    Inventors: Chae-Woong CHO, Woon-Suk Jang, Bum-Jin Chang, Ki-Jun Kim, Kwi-Seok Choi