Patents by Inventor Huiqing Yan

Huiqing Yan 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).

  • Lithium ion battery graphite negative electrode material and preparation method thereof
    Patent number: 10096822
    Abstract: A lithium ion battery graphite negative electrode material and preparation method thereof. The lithium ion battery graphite negative electrode material is a composite material including graphite substrates, surface coating layers coated on the graphite substrates and carbon nanotubes and/or carbon nanofibers grown in situ on the surface of the surface coating layers. The preparation method thereof includes, in solid phase or liquid phase circumstance, the coated carbon material precursor forms the surface coating layer of amorphous carbon by carbonization, and then carbon nanotubes and/or carbon nanofibers having high conductive performance are formed on the surface of the surface coating layers by vapor deposition. This coating mode of the combination of solid phase with gas phase or of liquid phase and gas phase makes the amorphous carbon formed on the surface of the graphite substrates more uniform and dense.
    Type: Grant
    Filed: April 2, 2014
    Date of Patent: October 9, 2018
    Assignee: SHENZHEN BRT NEW ENERGY MATERIALS INC.
    Inventors: Min Yue, Yan Liang, Huiqing Yan, Minghua Deng, Youyuan Huang
  • LITHIUM ION BATTERY GRAPHITE NEGATIVE ELECTRODE MATERIAL AND PREPARATION METHOD THEREOF
    Publication number: 20140302394
    Abstract: A lithium ion battery graphite negative electrode material and preparation method thereof. The lithium ion battery graphite negative electrode material is a composite material including graphite substrates, surface coating layers coated on the graphite substrates and carbon nanotubes and/or carbon nanofibers grown in situ on the surface of the surface coating layers. The preparation method thereof includes, in solid phase or liquid phase circumstance, the coated carbon material precursor forms the surface coating layer of amorphous carbon by carbonization, and then carbon nanotubes and/or carbon nanofibers having high conductive performance are formed on the surface of the surface coating layers by vapor deposition. This coating mode of the combination of solid phase with gas phase or of liquid phase and gas phase makes the amorphous carbon formed on the surface of the graphite substrates more uniform and dense.
    Type: Application
    Filed: April 2, 2014
    Publication date: October 9, 2014
    Applicant: SHENZHEN BTR NEW ENERGY MATERIALS INC
    Inventors: Min Yue, Yan Liang, Huiqing Yan, Minghua Deng, Youyuan Huang