Patents by Inventor Nam-Soon Choi

Nam-Soon Choi 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: 8492026
    Abstract: A rechargeable battery including a battery cell, and a battery case housing the battery cell, the battery case including a silane-based compound.
    Type: Grant
    Filed: December 2, 2009
    Date of Patent: July 23, 2013
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Sae-Weon Roh, Tae-Keun Kim, Nam-Soon Choi, Jin-Kyu Hong, Jun-Sik Kim, Man-Seok Han, Sung-Soo Kim
  • Patent number: 8394532
    Abstract: Negative active materials for rechargeable lithium batteries, methods of manufacturing the negative active materials, and rechargeable lithium batteries including the negative active materials are provided. One negative active material includes an active metal core and a crack inhibiting layer formed on the core. The crack inhibiting layer includes a carbon-based material.
    Type: Grant
    Filed: November 22, 2006
    Date of Patent: March 12, 2013
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Yong-Mook Kang, Nam-Soon Choi, Sung-Soo Kim
  • Patent number: 8367248
    Abstract: A negative active material for a rechargeable lithium battery of the present invention includes a lithium-vanadium oxide core material being capable of performing reversible electrochemical oxidation and reduction, and an inorganic oxide coating layer disposed on the surface of the core material. The negative active material can improve stability at the interface between a negative electrode and an electrolyte, charge and discharge efficiency, and cycle-life, and can be applied along with all kinds of aqueous and non-aqueous binders.
    Type: Grant
    Filed: November 21, 2007
    Date of Patent: February 5, 2013
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Kyoung-Han Yew, Nam-Soon Choi, Sung-Soo Kim, Su-Yeong Park
  • Publication number: 20120104312
    Abstract: The present invention relates to negative active materials for rechargeable lithium batteries, manufacturing methods thereof, and rechargeable lithium batteries including the negative active materials. A negative active material for a rechargeable lithium battery includes a core including a material capable of carrying out reversible oxidation and reduction reactions and a coating layer formed on the core. The coating layer has a reticular structure.
    Type: Application
    Filed: January 10, 2012
    Publication date: May 3, 2012
    Inventors: Nam-Soon Choi, Sung-Soo Kim, Yong-Mook Kang, Kyoung-Han Yew
  • Patent number: 8148008
    Abstract: Negative active material compositions for rechargeable lithium batteries, negative electrodes for rechargeable lithium batteries, and rechargeable lithium batteries using the negative active material compositions are provided. The negative active material composition includes a negative active material, a polyimide precursor compound, and a highly flexible polymer. The negative active material composition prevents the electrode substrate from bending, thereby improving the capacity and cycle-life characteristics of the battery.
    Type: Grant
    Filed: November 27, 2007
    Date of Patent: April 3, 2012
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Nam-Soon Choi, Sung-Soo Kim, Goo-Jin Jeong
  • Patent number: 8119283
    Abstract: The present invention relates to negative active materials for rechargeable lithium batteries, manufacturing methods thereof, and rechargeable lithium batteries including the negative active materials. A negative active material for a rechargeable lithium battery includes a core including a material capable of carrying out reversible oxidation and reduction reactions and a coating layer formed on the core. The coating layer has a reticular structure.
    Type: Grant
    Filed: October 31, 2006
    Date of Patent: February 21, 2012
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Nam-Soon Choi, Sung-Soo Kim, Yong-Mook Kang, Kyoung-Han Yew
  • Patent number: 8110305
    Abstract: A rechargeable lithium battery including: a negative electrode comprising lithium-vanadium oxide having the following Formula 1 and being capable of intercalating and deintercalating lithium ions, and a carbon-based material; a positive electrode comprising a positive active material capable of intercalating and deintercalating lithium ions; and an electrolyte comprising a monomer including alkylene oxide and a reactive double bond, a lithium salt, and a non-aqueous organic solvent. LixMyVzO2+d??Chemical Formula 1 In Formula 1, 0.1?x?2.5, 0?y?0.5, 0.5?z?1.5, 0?d?0.5, and M is at least one metal selected from the group consisting of Al, Cr, Mo, Ti, W, and Zr.
    Type: Grant
    Filed: August 6, 2007
    Date of Patent: February 7, 2012
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Su-Yeong Park, Nam-Soon Choi, Kyoung-Han Yew, Doo-Kyoung Lee, Sung-Soo Kim
  • Publication number: 20120015244
    Abstract: An electrode assembly comprises a first electrode including a first electrode current collector and a first electrode active material layer, a second electrode including a second electrode current collector and a second electrode active material layer, a separator disposed between the first electrode and the second electrode, and an electrode absorbing member in contact with the first electrode.
    Type: Application
    Filed: December 17, 2010
    Publication date: January 19, 2012
    Applicant: Samsung SDI Co., Ltd.
    Inventors: Jake Kim, Nam-Soon Choi, Jong-Man Kim, Sung-Soo Kim, Kyeong-Beom Cheong
  • Publication number: 20120009468
    Abstract: Negative active materials, negative electrodes, and rechargeable lithium batteries are provided. A negative electrode according to one embodiment includes a non-carbon-based active material, a lithium salt having an oxalatoborate structure, and a high-strength polymer binder. The negative active material may include a non-carbon-based material and a coating layer on the non-carbon-based material. The coating layer includes a lithium salt having an oxalatoborate structure and a high-strength polymer binder. A rechargeable lithium battery including the negative electrode or negative active material has good cycle life characteristics and high capacity.
    Type: Application
    Filed: September 19, 2011
    Publication date: January 12, 2012
    Applicant: SAMSUNG SDI CO., LTD
    Inventors: Nam-Soon Choi, Kyoung-Han Ryu, Su-Yeong Park, Doo-Kyoung Lee, Sang-Min Lee, Wan-Uk Choi
  • Publication number: 20110217588
    Abstract: Disclosed is a secondary battery which includes an electrode assembly comprising inner stacked electrodes and at least one outermost electrode positioned on at least one end of the inner stacked electrodes; and a case configured to house the electrode assembly. Herein, the at least one outermost electrode comprise an inactive material.
    Type: Application
    Filed: July 28, 2010
    Publication date: September 8, 2011
    Applicant: Samsung SDI Co., Ltd.
    Inventors: Sae-Weon Roh, Sung-Soo Kim, Tae-Keun Kim, Jin-Kyu Hong, Nam-Soon Choi, Jun-Sik Kim, Man-Seok Han, Chong-Hoon Lee
  • Publication number: 20110177378
    Abstract: An electrode assemblage includes a first electrode assembly with first electrodes. Each first electrode has a porous first electrode current collector with a plurality of pores, and first electrode active material layers attached to the porous first electrode current collector. The electrode assemblage further includes a second electrode having a second electrode current collector and second electrode active material layers attached to the second electrode current collector, and also includes a separator disposed between the first electrode assembly and the second electrode.
    Type: Application
    Filed: November 16, 2010
    Publication date: July 21, 2011
    Inventors: Man-Seok Han, Sung-Soo Kim, Nam-Soon Choi, Sae-Weon Roh, Jin-Kyu Hong
  • Publication number: 20110143198
    Abstract: A rechargeable lithium battery includes a binder for a rechargeable lithium battery, and a positive active material composition. The binder for the rechargeable lithium battery includes a nitrile-based polymer nanoparticle and a fluorine-containing polymer nanoparticle.
    Type: Application
    Filed: September 8, 2010
    Publication date: June 16, 2011
    Inventors: Nam-Soon Choi, Man-Seok Han, Tae-Keun Kim, Jin-Kyu Hong, Sung-Soo Kim
  • Publication number: 20110123863
    Abstract: A positive electrode and a rechargeable lithium battery including the same, the positive electrode including a current collector and a positive active material layer disposed on the current collector. The positive active material layer includes a positive active material and a binder including an ion conductive polymer including a carboxylate group.
    Type: Application
    Filed: October 12, 2010
    Publication date: May 26, 2011
    Inventors: Nam-Soon Choi, Sae-Weon Roh, Yong-Chul Park, Sung-Soo Kim, So-Hyun Hur
  • Publication number: 20110123864
    Abstract: A positive electrode for a rechargeable lithium battery including a net-type current collector and a positive active material layer formed on both sides of the current collector and also including a positive active material and a binder and having a thickness of about 150 ?m or more, a method of manufacturing the same, and a rechargeable lithium battery including the same.
    Type: Application
    Filed: September 21, 2010
    Publication date: May 26, 2011
    Inventors: Nam-Soon Choi, Sae-Weon Roh, Yong-Chul Park, Sung-Soo Kim, So-Hyun Hur
  • Publication number: 20110123869
    Abstract: Disclosed are a flame retardant electrolyte solution for a rechargeable lithium battery including a lithium salt, a linear carbonate-based solvent, an ionic liquid including ammonium cations, and a phosphoric acid-based solvent, and a rechargeable lithium battery including the same.
    Type: Application
    Filed: August 20, 2010
    Publication date: May 26, 2011
    Applicant: SAMSUNG SDI Co., Ltd.
    Inventors: Nam-Soon Choi, Irina Profatilova, Sung-Soo Kim, Eui-Hwan Song, Young-Mi Park
  • Publication number: 20110117438
    Abstract: An electrode assembly and a rechargeable battery using the same include a positive electrode including a positive current collector and a positive active material on the positive current collector; a negative electrode including a negative current collector and a negative active material on the negative current collector; an outer electrode including an outer current collector and an outer active material on the outer current collector, wherein the outer current collector includes an outer surface facing away from an outer separator and an inner surface facing toward the outer separator, and the outer active material is on both the outer surface and the inner surface, and wherein a thickness of the outer active material is less than at least one of a thickness of the positive active material or a thickness of the negative active material.
    Type: Application
    Filed: September 8, 2010
    Publication date: May 19, 2011
    Inventors: Man-Seok HAN, Jin-Kyu Hong, Sung-Soo Kim, Nam-Soon Choi, Sae-Weon Roh, So-Hyun Hur
  • Publication number: 20110111289
    Abstract: A rechargeable lithium battery includes a positive electrode including a current collector, a positive active material layer on the current collector and including a lithium manganese-based positive active material, and a protective layer on the positive active material layer and including a phosphite-based compound; a negative electrode; and an electrolyte coupled with the positive electrode and the negative electrode and including a lithium salt, a non-aqueous solvent, and an additive.
    Type: Application
    Filed: July 20, 2010
    Publication date: May 12, 2011
    Inventors: Nam-Soon Choi, Sae-Weon Roh, Man-Seok Han, Sung-Soo Kim
  • Patent number: 7931984
    Abstract: A negative electrode for a rechargeable lithium battery and a rechargeable lithium battery including the same are provided. The negative electrode for a rechargeable lithium battery includes a current collector, and a negative active material layer on the current collector. The negative active material layer includes an interpenetrating network network, and a negative active material in the interpenetrating network network. The interpenetrating network is formed by cross-linking a first polymer having a hydroxyl or amine group and a second polymer having a carboxylic acid group. The negative electrode for a rechargeable lithium battery minimizes volume expansion and imparts good cycle-life characteristics and initial formation efficiency.
    Type: Grant
    Filed: November 17, 2008
    Date of Patent: April 26, 2011
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Nam-Soon Choi, Kyoung-Han Yew, Sang-Min Lee, Su-Yeong Park, Doo-Kyoung Lee, Wan-Uk Choi
  • Publication number: 20110052952
    Abstract: An electrode assembly and a rechargeable battery having an electrode assembly. An electrode assembly for a rechargeable battery includes a first electrode; a second electrode; a first separator between the first electrode and the second electrode, the first separator having a plurality of first pores, each of the first pores elongated in a first direction; and a second separator on an opposite side of the first electrode from the first separator, the second separator having a plurality of second pores, each of the second pores elongated in a second direction crossing the first direction.
    Type: Application
    Filed: December 15, 2009
    Publication date: March 3, 2011
    Inventors: Sae-Weon Roh, Sung-Soo Kim, Tae-Keun Kim, Jin-Kyu Hong, Jun-Sik Kim, Man-Seok Han, Nam-Soon Choi, Chong-Hoon Lee
  • Publication number: 20110045333
    Abstract: A rechargeable battery that can improve heat dissipating characteristics is provided. The rechargeable battery comprises: an electrode group including a positive electrode; an electrode group that has at least one terminal; a case that defines a recess that receives the electrode group wherein the case includes an opening that provides access to the recess; a film cover that extends over the opening so as to secure the electrode group within the recess of the case; and a heat dissipating member positioned on the case so as extend outward from the case to dissipate heat from the recess containing the electrode group.
    Type: Application
    Filed: December 22, 2009
    Publication date: February 24, 2011
    Applicant: Samsung SDI Co., Ltd.
    Inventors: Jun-Sik Kim, Sung-Soo Kim, Nam-Soon Choi, Jeong-Soon Shin, Tae-Keun Kim, Sae-Weon Roh