Patents by Inventor Shuiyuan Zhang

Shuiyuan Zhang 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: 20090252668
    Abstract: Methods for preparing iron source material and ferrous oxalate for lithium ferrous phosphate are disclosed. One method comprises bringing solution containing ferrite and soluble non-ferrous metal salts in contact with oxalate solution; wherein said method of contact is to allow a flow of the ferrite solution containing ferrite and soluble non-ferrous metal salts to come in contact with a flow of oxalate solution. Another method comprises brings a stream of ferrite solution in contact with a stream of oxalate solution, wherein the flow rates of the ferrite solution and oxalate solution give the resulting slurry a pH of 2-6. The ferrous oxalate particles produces by the methods of the present invention are regularly shaped and have small and evenly distributed diameters.
    Type: Application
    Filed: July 18, 2008
    Publication date: October 8, 2009
    Applicant: BYD COMPANY LIMITED
    Inventors: Wenyu Cao, Shuiyuan Zhang, Feng Xiao
  • Publication number: 20090148765
    Abstract: Lithium iron(II) phosphate containing cathode active material having lithium iron(II) phosphate particles and nano-carbons and methods of preparation thereof. In addition, the cathode active material includes iron phosphide and can be prepared under an inert atmosphere and sintered at high temperatures. The material mixture includes lithium compound, iron compound, organic carbon, phosphorous and nano-iron particles resulting in an electrode with higher unit capacity and maintenance rate.
    Type: Application
    Filed: October 20, 2008
    Publication date: June 11, 2009
    Applicant: BYD COMPANY LIMITED
    Inventors: WENYU CAO, SHUIYUAN ZHANG, NANJIANG LIU, ZHANFENG JIANG