Patents by Inventor Seul-hee MIN

Seul-hee MIN 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).

  • Surface treatment method for lithium cobalt oxide, and lithium secondary battery comprising same
    Patent number: 10593943
    Abstract: The present invention relates to a surface treatment method for lithium cobalt oxide, comprising the steps of: (S1) mixing lithium cobalt oxide and an organic phosphoric acid compound; and (S2) heat treating and calcining the mixture prepared in step (S1). The surface treatment method of the present invention is simpler and has higher reproducibility than a conventional surface coating and doping technique, and can improve electrochemical characteristics by reinforcing the structural stability of lithium cobalt oxide. In addition, LiCoO2 prepared by the surface treatment method of the present invention is structurally stable during charging/discharging and does not cause unnecessary phase transition, and thus has excellent lifetime characteristics.
    Type: Grant
    Filed: January 11, 2016
    Date of Patent: March 17, 2020
    Inventors: Yong-mook Kang, Seul-hee Min, Mi-ru Jo
  • SURFACE TREATMENT METHOD FOR LITHIUM COBALT OXIDE, AND LITHIUM SECONDARY BATTERY COMPRISING SAME
    Publication number: 20180123128
    Abstract: The present invention relates to a surface treatment method for lithium cobalt oxide, comprising the steps of: (S1) mixing lithium cobalt oxide and an organic phosphoric acid compound; and (S2) heat treating and calcining the mixture prepared in step (S1). The surface treatment method of the present invention is simpler and has higher reproducibility than a conventional surface coating and doping technique, and can improve electrochemical characteristics by reinforcing the structural stability of lithium cobalt oxide. In addition, LiCoO2 prepared by the surface treatment method of the present invention is structurally stable during charging/discharging and does not cause unnecessary phase transition, and thus has excellent lifetime characteristics.
    Type: Application
    Filed: January 11, 2016
    Publication date: May 3, 2018
    Inventors: Yong-mook KANG, Seul-hee MIN, Mi-ru JO