Patents by Inventor Hyang Yeon Kim

Hyang Yeon Kim 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).

  • Negative electrode active material for lithium secondary battery
    Patent number: 10283766
    Abstract: A negative electrode active material for a lithium secondary battery according to an exemplary embodiment of the present invention includes an alloy containing silicon (Si), titanium (Ti), and iron (Fe), wherein the degree of amorphization of the alloy is raised by 40% or more by further adding copper (Cu) to the alloy.
    Type: Grant
    Filed: December 9, 2014
    Date of Patent: May 7, 2019
    Assignee: ILJIN ELECTRIC CO., LTD.
    Inventors: Cheol Ho Park, Seon Kyong Kim, Seung Chul Lee, Young Pil Choi, Hyang Yeon Kim, Jae Woong Kim, Min Seok Sung
  • NEGATIVE ELECTRODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY
    Publication number: 20160372745
    Abstract: A negative electrode active material for a lithium secondary battery according to an exemplary embodiment of the present invention includes an alloy including silicon (Si), copper (cu), and aluminum (Al) of 40 to 70 at %, wherein the ratio of aluminum (Al) to copper (Cu) included in the alloy is substantailly 10:90 to 30:70, and the alloy further includes iron (Fe), and further includes zirconium (Zr) or titanium (Ti).
    Type: Application
    Filed: February 10, 2015
    Publication date: December 22, 2016
    Applicant: ILJIN ELECTRIC CO., LTD.
    Inventors: Young Pil Choi, Cheol Ho Park, Seon Kyong Kim, Hyang Yeon Kim, Seung Chul Lee, Jae Woong Kim, Min Seok Sung
  • NEGATIVE ELECTRODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY
    Publication number: 20160329561
    Abstract: A negative electrode active material for a lithium secondary battery according to an exemplary embodiment of the present invention includes an alloy containing silicon (Si), titanium (Ti), and iron (Fe), wherein the degree of amorphization of the alloy is raised by 40% or more by further adding copper (Cu) to the alloy.
    Type: Application
    Filed: December 9, 2014
    Publication date: November 10, 2016
    Applicant: ILJIN ELECTRIC CO., LTD.
    Inventors: Cheol Ho Park, Seon Kyong Kim, Seung Chul Lee, Young Pil Choi, Hyang Yeon Kim, Jae Woong Kim, Min Seok Sung
  • NEGATIVE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY
    Publication number: 20160315318
    Abstract: A negative electrode active material for a lithium secondary battery according to an exemplary embodiment of the present invention includes: silicon (Si) of 40 to 60 at %; and an alloy including copper (Cu) and aluminum (Al), in which a ratio of the aluminum (Al) to the copper (Cu) included in the alloy is 30:70 to 65:35, and the silicon (Si) does not substantially form an intermetallic compound within the alloy.
    Type: Application
    Filed: December 9, 2014
    Publication date: October 27, 2016
    Applicant: ILJIN ELECTRIC CO., LTD.
    Inventors: Cheol Ho Park, Seon Kyong Kim, Young Pil Choi, Hyang Yeon Kim, Min Seok Sung, Seung Chul Lee, Jae Woong Kim