Patents by Inventor Ruifa Li

Ruifa Li 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).

  • Power battery and positive electrode plate thereof
    Patent number: 11189823
    Abstract: The present invention provides a power battery and a positive electrode plate thereof. The positive electrode plate includes a positive current collector and a positive active material layer formed on the positive current collector. The positive active material layer contains a mixture of lithium iron phosphate and FeF3, or a mixture of lithium iron phosphate and LiFe2F6, or a mixture of lithium iron phosphate, FeF3 and LiFe2F6. FeF3 or LiFe2F6 has a high gram capacity of more than 200 mAh/g and has a charge and discharge interval close to that of lithium iron phosphate, which can improve the energy density and the safety performance of the power battery.
    Type: Grant
    Filed: June 10, 2019
    Date of Patent: November 30, 2021
    Assignee: Contemporary Amperex Technology Co., Limited
    Inventors: Ruifa Li, Xiaomei Liu, Guopeng Teng, Yonggang Xu, Bo Li
  • POWER BATTERY AND POSITIVE ELECTRODE PLATE THEREOF
    Publication number: 20190296329
    Abstract: The present invention provides a power battery and a positive electrode plate thereof. The positive electrode plate includes a positive current collector and a positive active material layer formed on the positive current collector. The positive active material layer contains a mixture of lithium iron phosphate and FeF3, or a mixture of lithium iron phosphate and LiFe2F6, or a mixture of lithium iron phosphate, FeF3 and LiFe2F6. FeF3 or LiFe2F6 has a high gram capacity of more than 200 mAh/g and has a charge and discharge interval close to that of lithium iron phosphate, which can improve the energy density and the safety performance of the power battery.
    Type: Application
    Filed: June 10, 2019
    Publication date: September 26, 2019
    Inventors: Ruifa Li, Xiaomei Liu, Guopeng Teng, Yonggang Xu, Bo Li