Patents by Inventor Yanwei MA

Yanwei MA 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).

  • Graphene, preparation method thereof and supercapacitor electrode and supercapacitor containing the graphene
    Patent number: 11111148
    Abstract: Provided are a graphene and a preparation method therefor. The method for preparing a graphene comprises following steps: i) placing a mixture of a magnesium powder and a solid oxide powder in a carbon dioxide-containing environment; and ii) heating the mixture to enable the magnesium powder to react with carbon dioxide, thereby obtaining a graphene. The specific surface area of the grapheme is 350-750 m2/g, and the pore volume is 1-2 cm3/g. The method for preparing a graphene in the present invention is simple and easy to carry out, and has a low cost and a high yield; and the graphene product has few impurities, a high carbon-oxygen ratio, and excellent capacitance performance and electrochemical stability.
    Type: Grant
    Filed: March 10, 2017
    Date of Patent: September 7, 2021
    Assignee: INSTITUTE OF ELECTRICAL ENGINEERING, CHINESE ACADEMY OF SCIENCES
    Inventors: Yanwei Ma, Chen Li, Xiong Zhang
  • GRAPHENE, PREPARATION METHOD THEREOF AND SUPERCAPACITOR ELECTRODE AND SUPERCAPACITOR CONTAINING THE GRAPHENE
    Publication number: 20190210880
    Abstract: Provided are a graphene and a preparation method therefor. The method for preparing a graphene comprises following steps: i) placing a mixture of a magnesium powder and a solid oxide powder in a carbon dioxide-containing environment; and ii) heating the mixture to enable the magnesium powder to react with carbon dioxide, thereby obtaining a graphene. The specific surface area of the grapheme is 350-750 m2/g, and the pore volume is 1-2 cm3/g. The method for preparing a graphene in the present invention is simple and easy to carry out, and has a low cost and a high yield; and the graphene product has few impurities, a high carbon-oxygen ratio, and excellent capacitance performance and electrochemical stability.
    Type: Application
    Filed: March 10, 2017
    Publication date: July 11, 2019
    Inventors: Yanwei MA, Chen LI, Xiong ZHANG