Patents by Inventor Xianglan Wu

Xianglan Wu 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 of preparing layered lithium-chromium-manganese oxides for lithium batteries
    Publication number: 20040105809
    Abstract: A method of preparing layered lithium-chromium-manganese oxides having the formula Li[CrxLi(1/3-x/3) Mn(2/3-2x/3)]O2 where 0.1≦X≦0.5 for lithium batteries. Homogeneous precipitation is prepared by adding lithium hydroxide (LiOH) solution to a mixed solution of chromium acetate (Cr3(OH)2(CH3CO2)7) and manganese acetate ((CH3CO2)2Mn.4H2O), while precursor powders are prepared by firing the precipitation. After that, the precursor powders are subjected to two heat treatment to yield Li[CrxLi(1/3-x/3) Mn(2/3-2x/3)]O2 with &agr;-LiFeO2 structure.
    Type: Application
    Filed: August 25, 2003
    Publication date: June 3, 2004
    Inventors: Xianglan Wu, Yong Joon Park, Kwang Sun Ryu, Soon Ho Chang, Young-Sik Hong