Patents by Inventor Sun-il Park

Sun-il Park 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: 10847793
    Abstract: A negative active material for a rechargeable lithium battery includes a lithium titanate compound represented by Chemical Formula 1, where R, a Raman spectrum intensity ratio (I(F2u)/I(F2g)) of an F2u peak in a range of about 200 cm?1 to about 300 cm?1 relative to an F2g peak in a range of about 400 cm?1 to about 550 cm?1 is greater than or equal to about 0.7. Li4+xTi5?yMzO12?n??Chemical Formula 1 In Chemical Formula 1, ?0.2?x?0.2, ?0.3?y?0.3, 0?z?0.3, ?0.3?n?0.3, and M is selected from Mg, Al, Ca, Sr, Cr, V, Fe, Co, Ni, Zr, Zn, Si, Y, Nb, Ga, Sn, Mo, W, Ba, La, Ce, Ag, Ta, Hf, Ru, Bi, Sb, As, and a combination thereof.
    Type: Grant
    Filed: May 9, 2016
    Date of Patent: November 24, 2020
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Soojeong Lee, Young-Kee Kim, Dong-Hyun Shin, Sun-Il Park, Sujin Um
  • Patent number: 10224538
    Abstract: In an aspect, a positive electrode for a lithium rechargeable battery including a current collector; a positive active material layer disposed on the current collector, wherein the positive active material layer includes a positive active material, active carbon, and an additive.
    Type: Grant
    Filed: July 1, 2013
    Date of Patent: March 5, 2019
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Jeong-Woo Han, Young-Kee Kim, Sun-Il Park, Sumihito Ishida
  • Patent number: 10147939
    Abstract: A negative electrode for a rechargeable lithium battery includes a negative active material including a titanium-containing oxide and amorphous carbon. The titanium-containing oxide is present in a larger amount than the amorphous carbon.
    Type: Grant
    Filed: February 21, 2017
    Date of Patent: December 4, 2018
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Sun-Il Park, Young-Kee Kim, Joon-Kil Son, Soojeong Lee
  • Publication number: 20170244099
    Abstract: A negative electrode for a rechargeable lithium battery includes a negative active material including a titanium-containing oxide and amorphous carbon. The titanium-containing oxide is present in a larger amount than the amorphous carbon.
    Type: Application
    Filed: February 21, 2017
    Publication date: August 24, 2017
    Inventors: Sun-IL PARK, Young-Kee KIM, Joon-Kil SON, Soojeong LEE
  • Patent number: 9508982
    Abstract: A negative electrode composition for a rechargeable lithium battery. The negative electrode includes a negative active material and crystalline carbon conductive material, wherein the negative active material includes soft carbon, and the crystalline carbon conductive material includes graphite having an average particle diameter (D90) of about 1 micrometer to about 20 micrometers.
    Type: Grant
    Filed: March 13, 2013
    Date of Patent: November 29, 2016
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Young-Kee Kim, Jeong-Woo Han, Sun-il Park, Ishida Sumihito
  • Publication number: 20160344024
    Abstract: A negative active material for a rechargeable lithium battery includes a lithium titanate compound represented by Chemical Formula 1, where R, a Raman spectrum intensity ratio (I(F2u)/I(F2g)) of an F2u peak in a range of about 200 cm?1 to about 300 cm?1 relative to an F2g peak in a range of about 400 cm?1 to about 550 cm?1 is greater than or equal to about 0.7. Li4+xTi5?yMzO12?n ??Chemical Formula 1 In Chemical Formula 1, ?0.2?x?0.2, ?0.3?y?0.3, 0?z?0.3, ?0.3?n?0.3, and M is selected from Mg, Al, Ca, Sr, Cr, V, Fe, Co, Ni, Zr, Zn, Si, Y, Nb, Ga, Sn, Mo, W, Ba, La, Ce, Ag, Ta, Hf, Ru, Bi, Sb, As, and a combination thereof.
    Type: Application
    Filed: May 9, 2016
    Publication date: November 24, 2016
    Inventors: Soojeong Lee, Young-Kee Kim, Dong-Hyun Shin, Sun-Il Park, Sujin Um
  • Patent number: 9490502
    Abstract: An electrolyte for a rechargeable lithium battery, the electrolyte including a lithium salt, a non-aqueous organic solvent, a first additive represented by Chemical Formula 1, and a second additive represented by Chemical Formula 2 is disclosed. A rechargeable lithium battery including the electrolyte is also disclosed. The structures and definitions of the Chemical Formulae 1 and 2 are the same as described in the detailed description.
    Type: Grant
    Filed: January 8, 2014
    Date of Patent: November 8, 2016
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Sun-Il Park, Young-Kee Kim, Sumihito Ishida
  • Publication number: 20140342243
    Abstract: An electrolyte for a rechargeable lithium battery, the electrolyte including a lithium salt, a non-aqueous organic solvent, a first additive represented by Chemical Formula 1, and a second additive represented by Chemical Formula 2 is disclosed. A rechargeable lithium battery including the electrolyte is also disclosed. The structures and definitions of the Chemical Formulae 1 and 2 are the same as described in the detailed description.
    Type: Application
    Filed: January 8, 2014
    Publication date: November 20, 2014
    Applicant: SAMSUNG SDI CO., LTD.
    Inventors: Sun-Il Park, Young-Kee Kim, Sumihito Ishida
  • Publication number: 20140199587
    Abstract: In an aspect, a positive electrode for a lithium rechargeable battery including a current collector; a positive active material layer disposed on the current collector, wherein the positive active material layer includes a positive active material, active carbon, and an additive.
    Type: Application
    Filed: July 1, 2013
    Publication date: July 17, 2014
    Inventors: Jeong-Woo Han, Young-Kee Kim, Sun-Il Park, Sumihito Ishida
  • Publication number: 20140178764
    Abstract: In an aspect, a negative active material for a rechargeable lithium battery that includes amorphous carbon, wherein the amorphous carbon may generally have a relatively larger average lattice distance (d002) than graphite is provided.
    Type: Application
    Filed: August 22, 2013
    Publication date: June 26, 2014
    Applicant: Samsung SDI Co., Ltd.
    Inventors: Sun-Il Park, Kyeu-Yoon Sheem, Young-Kee Kim
  • Publication number: 20130288118
    Abstract: A negative electrode composition for a rechargeable lithium battery. The negative electrode includes a negative active material and crystalline carbon conductive material, wherein the negative active material includes soft carbon, and the crystalline carbon conductive material includes graphite having an average particle diameter (D90) of about 1 micrometer to about 20 micrometers.
    Type: Application
    Filed: March 13, 2013
    Publication date: October 31, 2013
    Applicant: SAMSUNG SDI CO., LTD.
    Inventors: Young-Kee Kim, Jeong-Woo Han, Sun-il Park, Ishida Sumihito