Patents by Inventor Seunguh Kwon

Seunguh Kwon 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 and secondary battery including the same
    Patent number: 9373839
    Abstract: A negative electrode active material and a secondary battery including the same are provided. More particularly, the present disclosure relates to a negative electrode active material including a Si-metal alloy including Si, the Si being present in the Si-metal alloy in an amount of 66 at % or less, and at least a portion of the Si being crystalline Si. The negative active material can provide a high-capacity battery, which can retain high capacity due to little volumetric expansion during charging and discharging, thereby demonstrating an excellent life characteristic of the secondary battery. The negative electrode active material may include a Si-metal alloy including crystalline Si having a crystal grain size of 30 nm or less. Methods of preparing a negative electrode active material and methods of preparing a secondary battery including the same are also disclosed.
    Type: Grant
    Filed: January 31, 2012
    Date of Patent: June 21, 2016
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Changui Jeong, Chungyoo Lee, Sungwan Moon, Jaehyuk Kim, Yury Matulevich, Seunguh Kwon, Yohan Park, Jongseo Choi
  • NEGATIVE ELECTRODE ACTIVE MATERIAL AND SECONDARY BATTERY INCLUDING THE SAME
    Publication number: 20130149594
    Abstract: A negative electrode active material and a secondary battery including the same are provided. More particularly, the present disclosure relates to a negative electrode active material including a Si-metal alloy including Si, the Si being present in the Si-metal alloy in an amount of 66 at % or less, and at least a portion of the Si being crystalline Si. The negative active material can provide a high-capacity battery, which can retain high capacity due to little volumetric expansion during charging and discharging, thereby demonstrating an excellent life characteristic of the secondary battery. The negative electrode active material may include a Si-metal alloy including crystalline Si having a crystal grain size of 30 nm or less. Methods of preparing a negative electrode active material and methods of preparing a secondary battery including the same are also disclosed.
    Type: Application
    Filed: January 31, 2012
    Publication date: June 13, 2013
    Inventors: Changui Jeong, Chungyoo Lee, Sungwan Moon, Jaehyuk Kim, Yury Matulevich, Seunguh Kwon, Yohan Park, Jongseo Choi