Flash Solution Oxidation in the Preparation of Cathode Materials for Mg and Li Ion Power Sources

Monday, 27 July 2015
Hall 2 (Scottish Exhibition and Conference Centre)
T. E. Sutto (Naval Research Laboratory)
Using a previously described approach towards preparing oxide nanoparticles via the use of potassium superoxide, we have explored the preparation of cathode materials such as LiCoO2, LiMn2O4 or Mg(M1,M2)O2.  From solutions of LiI, or Magnesium Acetate with various transition metals, it is possible to prepare a wide host of potential nanopoarticulate cathode materials in solution.  Initial preparation typically yields an amorphous blend of the material, but subsequent oxygen annealing at relatively low temperatures (100-200 oC) results in the formation of nanometer sized cathode materials, such as shown in the accompanying figure for 2.5 nM sized LiCoO2 prepared via this solution method.