Patents by Inventor Nen Zhang

Nen Zhang 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).

  • Secondary battery, battery pack, and vehicle
    Patent number: 11508952
    Abstract: According to one embodiment, provided is a secondary battery including a positive electrode, a negative electrode, and an electrolyte. The negative electrode includes a niobium-titanium composite oxide having fluorine atoms on at least part of a surface the niobium-titanium composite oxide. An abundance ratio AF of fluorine atoms, an abundance ratio ATi of titanium atoms, and an abundance ratio ANb of niobium atoms on a surface of the negative electrode according to X-ray photoelectron spectroscopy satisfy a relationship of 3.5?AF/(ATi+ANb)?50.
    Type: Grant
    Filed: August 31, 2020
    Date of Patent: November 22, 2022
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Keigo Hoshina, Nen Zhang, Tetsuya Sasakawa, Yasuhiro Harada, Norio Takami