Patents Assigned to TODA KOGYA CORP.
  • GRAPHITE MATERIAL FOR NEGATIVE ELECTRODES OF LITHIUM ION SECONDARY BATTERY, MANUFACTURING METHOD FOR SAID MATERIAL, AND LITHIUM ION SECONDARY BATTERY USING SAME
    Publication number: 20130251620
    Abstract: A graphite material for a negative electrode is provided which can suppress capacity degradation due to repeated charging and discharging cycles, storage in a charged state, and floating charging. A method of manufacturing a graphite material for a negative electrode of a lithium ion secondary battery is provided in which an atomic ratio H/C of hydrogen atoms H and carbon atoms C in the raw coke composition is in a range of 0.30 to 0.50 and a microstrength of the raw coke composition is in a range of 7 wt % to 17 wt %.
    Type: Application
    Filed: April 19, 2013
    Publication date: September 26, 2013
    Applicants: TODA KOGYA CORP., JX NIPPON OIL & ENERGY CORPORATION
    Inventors: Takashi SUZUKI, Noriyo ISHIMARU, Takashi OYAMA, Tamotsu TANO, Toshiyuki ODA, Ippei FUJINAGA, Tomoaki URAI, Seiji OKAZAKI, Katsuaki KURATA, Toshiaki HIRAMOTO, Akino SATO, Wataru ODA