Patents by Inventor Errui Wang

Errui Wang 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-rich layered oxide material with phase structure gradient and its preparation method
    Patent number: 11198621
    Abstract: A lithium-rich layered oxide material with a phase structure gradient and method for making the same are disclosed, used as cathode material for lithium ion battery. The invention has the following technical features: the spherical granule-shaped lithium-rich layered oxide material contains two types of structural units whose ratio gradually changes from the center to the surface of the spherical granule, wherein the monoclinic Li2MnO3 structural unit is gradually reduced, and the rhombohedral LiTMO2 structural unit is gradually increased from the center to the surface of the spherical granule. By controlling the ratio of the monoclinic Li2MnO3 structural unit versus the rhombohedral LiTMO2 structural unit along from the center to the surface the spherical granule, the performance of the Lithium-rich layered oxide materials as cathode for lithium ion battery, such as cyclic stability, specific discharge capacity, safety and other properties, is improved.
    Type: Grant
    Filed: December 22, 2017
    Date of Patent: December 14, 2021
    Assignee: Beijing University of Technology
    Inventors: Haijun Yu, Guangyin Li, Tianhao Wu, Errui Wang, Lin Wang, Qi Zhang
  • A Lithium-Rich Layered Oxide Material With Phase Structure Gradient And Its Preparation Method
    Publication number: 20210221702
    Abstract: A lithium-rich layered oxide material with a phase structure gradient and method for making the same are disclosed, used as cathode material for lithium ion battery. The invention has the following technical features: the spherical granule-shaped lithium-rich layered oxide material contains two types of structural units whose ratio gradually changes from the center to the surface of the spherical granule, wherein the monoclinic Li2MnO3 structural unit is gradually reduced, and the rhombohedral LiTMO2 structural unit is gradually increased from the center to the surface of the spherical granule. By controlling the ratio of the monoclinic Li2MnO3 structural unit versus the rhombohedral LiTMO2 structural unit along from the center to the surface the spherical granule, the performance of the Lithium-rich layered oxide materials as cathode for lithium ion battery, such as cyclic stability, specific discharge capacity, safety and other properties, is improved.
    Type: Application
    Filed: December 22, 2017
    Publication date: July 22, 2021
    Inventors: Haijun YU, Guangyin Li, Tianhao Wu, Errui Wang, Lin Wang, Qi Zhang