Patents by Inventor Qijie ZHOU

Qijie ZHOU 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).

  • Full-gradient nickel cobalt manganese positive electrode material, ruthenium oxide coated material and preparation method thereof
    Patent number: 11855285
    Abstract: The present invention discloses a full-gradient nickel cobalt manganese positive electrode material, a ruthenium oxide coated material and a preparation method thereof. The material has a chemical formula of LiNixCoyMn(1-x-y)O2, wherein, 0.5?x?0.9, 0.05?y?0.40, 1-x-y>0. A content of the nickel element is gradually decreased from a core portion to an outer surface of the full-gradient nickel cobalt manganese positive electrode material. A content of the manganese element is gradually increased from the core portion to the outer surface of the full-gradient nickel cobalt manganese positive electrode material. And, a content of the cobalt element is uniformly distributed in the full-gradient nickel cobalt manganese positive electrode material. The present invention also discloses a preparation method of the full-gradient nickel cobalt manganese positive electrode material. The present invention also discloses a preparation method of the ruthenium oxide coated material.
    Type: Grant
    Filed: April 13, 2020
    Date of Patent: December 26, 2023
    Assignee: CENTRAL SOUTH UNIVERSITY
    Inventors: Hui Tong, Qijie Zhou, Bao Zhang, Xu Wang, Yingying Yao, Wanjing Yu, Junchao Zheng
  • FULL-GRADIENT NICKEL COBALT MANGANESE POSITIVE ELECTRODE MATERIAL, RUTHENIUM OXIDE COATED MATERIAL AND PREPARATION METHOD THEREOF
    Publication number: 20200335784
    Abstract: The present invention discloses a full-gradient nickel cobalt manganese positive electrode material, a ruthenium oxide coated material and a preparation method thereof. The material has a chemical formula of LiNixCoyMn(1-x-y)O2, wherein, 0.5?x?0.9, 0.05?y?0.40, 1-x-y>0. A content of the nickel element is gradually decreased from a core portion to an outer surface of the full-gradient nickel cobalt manganese positive electrode material. A content of the manganese element is gradually increased from the core portion to the outer surface of the full-gradient nickel cobalt manganese positive electrode material. And, a content of the cobalt element is uniformly distributed in the full-gradient nickel cobalt manganese positive electrode material. The present invention also discloses a preparation method of the full-gradient nickel cobalt manganese positive electrode material. The present invention also discloses a preparation method of the ruthenium oxide coated material.
    Type: Application
    Filed: April 13, 2020
    Publication date: October 22, 2020
    Inventors: Hui TONG, Qijie ZHOU, Bao ZHANG, Xu WANG, Yingying YAO, Wanjing YU, Junchao ZHENG