Patents by Inventor QING-WEI CUI

QING-WEI 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).

  • Method for making lithium ion battery anode active material
    Patent number: 9825288
    Abstract: A method for making a lithium ion battery anode active material comprising: providing silicon particles and a silane coupling agent, wherein the silane coupling agent comprises a hydrolysable functional group and an organic functional group; mixing the silicon particles and the silane coupling agent in water to obtain a first mixture; adding a monomer or oligomer to the first mixture to obtain a second mixture, the surfaces of the silicon particles being coated with a polymer layer by in situ polymerization method to obtain silicon polymer composite material, the monomer or the oligomer reacting with the organic functional group of the silane coupling agent in a polymerization, thereby a generated polymer layer being chemically grafted on the surfaces of the silicon particles; and heating the silicon polymer composite material to carbonize the polymer layer to form a carbon layer coated on the surfaces of the silicon particles.
    Type: Grant
    Filed: July 2, 2014
    Date of Patent: November 21, 2017
    Assignees: Jiangsu Huadong Institute of Li-ion Battery Co. Ltd., Tsinghua University
    Inventors: Qing-Wei Cui, Jian-Jun Li, Xiang-Ming He, Jiang Cao, Li Wang, Zhong-Jia Dai
  • METHOD FOR MAKING LITHIUM ION BATTERY ANODE ACTIVE MATERIAL
    Publication number: 20160164081
    Abstract: A method for making a lithium ion battery anode active material comprising: providing silicon particles and a silane coupling agent, wherein the silane coupling agent comprises a hydrolysable functional group and an organic functional group; mixing the silicon particles and the silane coupling agent in water to obtain a first mixture; adding a monomer or oligomer to the first mixture to obtain a second mixture, the surfaces of the silicon particles being coated with a polymer layer by in situ polymerization method to obtain silicon polymer composite material, the monomer or the oligomer reacting with the organic functional group of the silane coupling agent in a polymerization, thereby a generated polymer layer being chemically grafted on the surfaces of the silicon particles; and heating the silicon polymer composite material to carbonize the polymer layer to form a carbon layer coated on the surfaces of the silicon particles.
    Type: Application
    Filed: July 2, 2014
    Publication date: June 9, 2016
    Inventors: QING-WEI CUI, JIAN-JUN LI, XIANG-MING HE, JIANG CAO, LI WANG, ZHONG-JIA DAI