Patents by Inventor Guijia CUI

Guijia CUI 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).

  • Vanadium sodium phosphate positive electrode material, sodium ion battery, preparation method therefor, and use thereof
    Patent number: 11990620
    Abstract: A vanadium sodium phosphate positive electrode material, a sodium ion battery, and a preparation method therefor and application thereof. The preparation method of the vanadium sodium phosphate positive electrode material comprises the following steps: (1) reacting an aqueous solution containing a vanadium source with a phosphorus source, a reducing agent, a sodium source, and a carbon source, the reaction comprising first performing a reaction of an aqueous solution of the vanadium source and the phosphorus source, and then perform a reaction with the reducing agent, or first performing a reaction of the aqueous solution of the vanadium source with the reducing agent and then performing a reaction with the phosphorus source; (2) drying and calcining the reaction liquid obtained in step (1). The vanadium sodium phosphate positive electrode material has a high dispersibility, and has stable circulation performance when used in a battery.
    Type: Grant
    Filed: August 7, 2019
    Date of Patent: May 21, 2024
    Assignee: SHANGHAI ZIJIAN CHEMICAL TECHNOLOGY CO., LTD
    Inventors: Zifeng Ma, Haiying Che, Xiaowei Yang, Guijia Cui
  • VANADIUM SODIUM PHOSPHATE POSITIVE ELECTRODE MATERIAL, SODIUM ION BATTERY, PREPARATION METHOD THEREFOR, AND USE THEREOF
    Publication number: 20210167387
    Abstract: A vanadium sodium phosphate positive electrode material, a sodium ion battery, and a preparation method therefor and application thereof. The preparation method of the vanadium sodium phosphate positive electrode material comprises the following steps: (1) reacting an aqueous solution containing a vanadium source with a phosphorus source, a reducing agent, a sodium source, and a carbon source, the reaction comprising first performing a reaction of an aqueous solution of the vanadium source and the phosphorus source, and then perform a reaction with the reducing agent, or first performing a reaction of the aqueous solution of the vanadium source with the reducing agent and then performing a reaction with the phosphorus source; (2) drying and calcining the reaction liquid obtained in step (1). The vanadium sodium phosphate positive electrode material has a high dispersibility, and has stable circulation performance when used in a battery.
    Type: Application
    Filed: August 7, 2019
    Publication date: June 3, 2021
    Inventors: Zifeng MA, Haiying CHE, Xiaowei YANG, Guijia CUI