Patents by Inventor Weizhen FAN

Weizhen FAN 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).

  • Publication number: 20230420738
    Abstract: An electrolyte additive, an electrolyte, and a lithium-ion battery, where the electrolyte additive has a structure shown in formula (I): The electrolyte additive has both a film-forming property and the property of inhibiting the rise of acidity and chromaticity of the electrolyte, thereby effectively improving the cycle performance of the battery.
    Type: Application
    Filed: September 11, 2023
    Publication date: December 28, 2023
    Inventors: Gejin CAO, Weizhen FAN, Chaojun FAN, Yong XIN, Jingwei ZHAO
  • Publication number: 20230027087
    Abstract: The invention relates to the technical field of secondary batteries, specifically to a high-temperature lithium secondary battery electrolyte and a battery cell. The high-temperature lithium secondary battery contains an additive composition consisting of a diisocyanate compound and a bicyclic sulfate compound.
    Type: Application
    Filed: September 24, 2020
    Publication date: January 26, 2023
    Inventors: Chaojun FAN, Weizhen FAN, Yong XIN, Jingwei ZHAO
  • Publication number: 20230009549
    Abstract: Provided are a bissulfonate compound, a preparation method therefor, an electrolytic solution and an energy storage device. The bissulfonate compound has a structure of (I) and is applied as an additive to an energy storage device, so that a stable SEI film can be formed on a surface of an anode of the energy storage device, and the decomposition of a solvent in the electrolytic solution can be suppressed. As the stable SEI film can be formed on the surface of the anode, lithium ions can be smoothly embedded and disembedded at a low temperature, thereby improving the low-temperature performance of the energy storage device.
    Type: Application
    Filed: September 17, 2020
    Publication date: January 12, 2023
    Inventors: Gejin CAO, Weizhen FAN, Chaojun FAN, Lei XU, Yong XIN, Jingwei ZHAO
  • Publication number: 20220238909
    Abstract: The present invention relates to the technical field of secondary lithium-ion batteries, specifically, provided in the present invention are a secondary lithium-ion battery electrolyte solution for reducing battery resistance and a secondary lithium-ion battery. The present invention, in a first aspect, provides the electrolyte solution for the secondary lithium-ion battery, comprising a non-aqueous solvent, a lithium salt and an additive, where the additive comprises a sulfonate compound. The secondary lithium-ion battery electrolyte solution and the secondary lithium-ion battery provided in the present invention have reduced resistance and improved low-temperature performance, high-temperature performance, and cycle life.
    Type: Application
    Filed: December 20, 2019
    Publication date: July 28, 2022
    Inventors: Weizhen Fan, Gejin Cao, Chaojun Fan, Le Yu, Jingwei Zhao
  • Publication number: 20210384554
    Abstract: A lithium secondary battery electrolyte for reducing internal resistance of a battery and a lithium secondary battery. The electrolyte comprises a non-aqueous organic solvent, a lithium salt and an additive. The additive comprises a sulfimide compound. The sulfimide compound can significantly reduce the internal resistance of a battery. The low temperature cycle, large rate normal temperature cycle, high temperature cycle, and expansion after high temperature storage have been significantly improved.
    Type: Application
    Filed: December 19, 2019
    Publication date: December 9, 2021
    Applicant: GUANGZHOU TINCI MATERIALS TECHNOLOGY CO., LTD.
    Inventors: Weizhen Fan, Chaojun Fan, Gejin Cao, Le Yu, Jingwei Zhao
  • Publication number: 20210036366
    Abstract: The present invention relates to a lithium secondary battery electrolyte and a lithium secondary battery thereof. The lithium secondary battery electrolyte comprises an organic solvent, a conductive lithium salt, an ionic liquid, and an additive. The ionic liquid is selected from at least one of 1-ethyl-3-methylimidazole tetrafluoroborate and dipyrrolidinyl ammonium tetrafluoroborate. For the electrolyte, by adding the ionic liquids 1-ethyl-3-methylimidazole tetrafluoroborate and dipyrrolidinyl ammonium tetrafluoroborate to use in combination with additives lithium difluorophosphate, methyl 2-propynylcarbonate, methyl allyl carbonate, and 1,3 propane sultone, the high temperature, normal temperature and low temperature cycle performance of the electrolyte can be improved.
    Type: Application
    Filed: May 22, 2018
    Publication date: February 4, 2021
    Applicant: GUANGZHOU TINCI MATERIALS TECHNOLOGY CO., LTD.
    Inventors: Weizhen FAN, Le YU, Chaojun FAN, Jingwei ZHAO
  • Publication number: 20200395612
    Abstract: The present invention relates to a slurry for a positive electrode of a secondary lithium battery, a preparation method for the same, and an application thereof. The slurry for a positive electrode of a lithium secondary battery comprises an active material of the positive electrode, a conductive agent, a binding agent, and an organic solvent. The organic solvent has a structure as shown by formula (I), with R3 being a C1-C6 alkyl group, R1 and R2 being either hydrogen, a C1-C6 alkyl group, or a C1-C6 ether-linked hydrocarbyl group, and R1 and R2 being capable of binding with the connected nitrogen atom to form a cyclic structure. The slurry of a positive electrode of a secondary lithium battery has superior performance, is environmentally friendly, mild and safe, and causes no irritation, thereby reducing damage to operators, and reducing the burden on the environment.
    Type: Application
    Filed: June 27, 2018
    Publication date: December 17, 2020
    Applicant: GUANGZHOU TINCI MATERIALS TECHNOLOGY CO., LTD.
    Inventors: Tian XIE, Weizhen FAN, Le YU, Jingwei ZHAO