Patents by Inventor Ki-Sup Song

Ki-Sup Song 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).

  • Cathode active material for lithium secondary batteries, method for preparing the same, and lithium secondary batteries comprising the same
    Patent number: 8808916
    Abstract: Disclosed are a cathode active material for lithium secondary batteries, a method for preparing the same, and lithium secondary batteries comprising the same. The cathode active material for lithium secondary batteries comprises a lithium metal oxide secondary particle core formed by aggregation of a plurality of lithium metal oxide primary particles; a first shell formed by coating the surface of the secondary particle core with a plurality of barium titanate particles and a plurality of metal oxide particles; and a second shell formed by coating the surface of the first shell with a plurality of olivine-type lithium iron phosphate oxide particles and a plurality of conductive material particles. The cathode active material for lithium secondary batteries allows manufacture of lithium secondary batteries having excellent thermal stability, high-temperature durability and overcharge safety.
    Type: Grant
    Filed: November 25, 2009
    Date of Patent: August 19, 2014
    Assignees: Daejung EM Co., Ltd., Kokam Co., Ltd.
    Inventors: Seong-Bae Kim, Woo-Seong Kim, Ki-Sup Song, Ji-Jun Hong, Sung-Tae Ko, Yoon-Jeong Heo
  • CATHODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERIES, METHOD FOR PREPARING THE SAME, AND LITHIUM SECONDARY BATTERIES COMPRISING THE SAME
    Publication number: 20110052991
    Abstract: Disclosed are a cathode active material for lithium secondary batteries, a method for preparing the same, and lithium secondary batteries comprising the same. The cathode active material for lithium secondary batteries comprises a lithium metal oxide secondary particle core formed by aggregation of a plurality of lithium metal oxide primary particles; a first shell formed by coating the surface of the secondary particle core with a plurality of barium titanate particles and a plurality of metal oxide particles; and a second shell formed by coating the surface of the first shell with a plurality of olivine-type lithium iron phosphate oxide particles and a plurality of conductive material particles. The cathode active material for lithium secondary batteries allows manufacture of lithium secondary batteries having excellent thermal stability, high-temperature durability and overcharge safety.
    Type: Application
    Filed: November 25, 2009
    Publication date: March 3, 2011
    Applicants: DAEJUNG EM CO., LTD., KOKAM CO., LTD.
    Inventors: Seong-Bae Kim, Woo-Seong Kim, Ki-Sup Song, Ji-Jun Hong, Sung-Tae Ko, Yoon-Jeong Heo