Abstract: A method of preparing a composite cathode active material having superior cell characteristics includes mixing and milling starting material, carbon and an organic complexing agent. The mixture is heated at a first temperature in an inert atmosphere to form a composite precursor, and then the precursor is ground and heated at a second temperature in an inert atmosphere to produce a carbon-containing composite cathode material having high electronic conductivity The said composite cathode has a general formula of LiFe1-xMxPO4—C, within 0?x<1, M is selected from the group consisting of Co, Ni, V, Cr, Mn and a mixture thereof.
Type:
Application
Filed:
January 17, 2007
Publication date:
July 17, 2008
Applicant:
US GOVT AS REPRESENTED BY SECT. OF ARMY
Inventors:
Shengshui Zhang, Kang Xu, T. Richard Jow