Patents by Inventor Joo-yeal Oh

Joo-yeal Oh 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: 7316867
    Abstract: A thin film for an anode of a lithium secondary battery having a current collector and an anode active material layer formed thereon is provided. The anode active material layer is a multi-layered thin film formed by stacking a silver (Ag) layer and a silicon-metal (Si-M) layer having silicon dispersed in a base made from metal reacting with silicon while not reacting with lithium. The cycle characteristic of the thin film for an anode can be improved by suppressing the volumetric expansion and shrinkage of Si occurring during charging/discharging cycles. Thus, a lithium secondary battery with improved life characteristics by employing the thin film for an anode, which greatly improves the chemical, mechanical stability of the interface between an electrode and an electrolyte.
    Type: Grant
    Filed: November 29, 2004
    Date of Patent: January 8, 2008
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Young-sin Park, Joo-yeal Oh, Hong-koo Baik, Sung-man Lee
  • Patent number: 7052801
    Abstract: An anode thin film for a lithium secondary battery having a current collector and an anode active material layer formed thereon, wherein the anode active material layer contains an intermetallic compound of tin (Sn) and nickel (Ni). In particular, the intermetallic compound is Ni3Sn4.
    Type: Grant
    Filed: January 10, 2002
    Date of Patent: May 30, 2006
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Young-sin Park, Joo-yeal Oh, Sung-man Lee, Hong-koo Baik
  • Publication number: 20050074673
    Abstract: A thin film for an anode of a lithium secondary battery having a current collector and an anode active material layer formed thereon is provided. The anode active material layer is a multi-layered thin film formed by stacking a silver (Ag) layer and a silicon-metal (Si—M) layer having silicon dispersed in a base made from metal reacting with silicon while not reacting with lithium. The cycle characteristic of the thin film for an anode can be improved by suppressing the volumetric expansion and shrinkage of Si occurring during charging/discharging cycles. Thus, a lithium secondary battery with improved life characteristics by employing the thin film for an anode, which greatly improves the chemical, mechanical stability of the interface between an electrode and an electrolyte.
    Type: Application
    Filed: November 29, 2004
    Publication date: April 7, 2005
    Applicant: Samsung SDI Co., Ltd.
    Inventors: Young-sin Park, Joo-yeal Oh, Hong-koo Baik, Sung-man Lee
  • Patent number: 6828063
    Abstract: The present invention provides an anode thin film for a lithium secondary battery having a current collector and an anode active material layer formed thereon. Here, the anode active material layer is a multiple-layer thin film comprising a silicon (Si) layer and a silver (Ag) layer or a single-layer thin film comprising silicon (Si) and silver (Ag).
    Type: Grant
    Filed: November 16, 2001
    Date of Patent: December 7, 2004
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Young-sin Park, Hong-koo Baik, Sung-man Lee, Joo-yeal Oh
  • Patent number: 6824922
    Abstract: A thin film for an anode of a lithium secondary battery having a current collector and an anode active material layer formed thereon is provided. The anode active material layer is a multi-layered thin film formed by stacking a silver (Ag) layer and a silicon-metal (Si-M) layer having silicon dispersed in a base made from metal reacting with silicon while not reacting with lithium. The cycle characteristic of the thin film for an anode can be improved by suppressing the volumetric expansion and shrinkage of Si occurring during charging/discharging cycles. Thus, a lithium secondary battery with improved life characteristics by employing the thin film for an anode, which greatly improves the chemical, mechanical stability of the interface between an electrode and an electrolyte.
    Type: Grant
    Filed: April 9, 2002
    Date of Patent: November 30, 2004
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Young-sin Park, Joo-yeal Oh, Hong-koo Baik, Sung-man Lee
  • Publication number: 20030044682
    Abstract: A n anode thin film for a lithium secondary battery having a current collector and an anode active material layer formed thereon, wherein the anode active material layer contains an intermetallic compound of tin (Sn) and nickel (Ni). In particular, the intermetallic compound is Ni3Sn4.
    Type: Application
    Filed: January 10, 2002
    Publication date: March 6, 2003
    Applicant: Samsung SDI Co., Ltd.
    Inventors: Young-Sin Park, Joo-Yeal Oh, Sung-man Lee, Hong-Koo Baik
  • Publication number: 20030039889
    Abstract: A thin film for an anode of a lithium secondary battery having a current collector and an anode active material layer formed thereon is provided. The anode active material layer is a multi-layered thin film formed by stacking a silver (Ag) layer and a silicon-metal (Si-M) layer having silicon dispersed in a base made from metal reacting with silicon while not reacting with lithium. The cycle characteristic of the thin film for an anode can be improved by suppressing the volumetric expansion and shrinkage of Si occurring during charging/discharging cycles. Thus, a lithium secondary battery with improved life characteristics by employing the thin film for an anode, which greatly improves the chemical, mechanical stability of the interface between an electrode and an electrolyte.
    Type: Application
    Filed: April 9, 2002
    Publication date: February 27, 2003
    Applicant: Samsung SDI Co. Ltd.
    Inventors: Young-sin Park, Joo-yeal Oh, Hong-koo Baik, Sung-man Lee
  • Publication number: 20020048705
    Abstract: The present invention provides an anode thin film for a lithium secondary battery having a current collector and an anode active material layer formed thereon. Here, the anode active material layer is a multiple-layer thin film comprising a silicon (Si) layer and a silver (Ag) layer or a single-layer thin film comprising silicon (Si) and silver (Ag).
    Type: Application
    Filed: November 16, 2001
    Publication date: April 25, 2002
    Applicant: Samsung SDI Co. Ltd.
    Inventors: Young-Sin Park, Hong-Koo Baik, Sung-Man Lee, Joo-Yeal Oh