Abstract: The present invention provides for the preparation of an “optimized” lithium vanadium phosphate material. The materials are synthesized under conditions that avoid exposure to reducing gases, such as hydrogen, at high temperatures and thus materials of high performance are produced. The lithium vanadium phosphate materials so produced find use in producing electrodes for electrochemical cells.

Abstract: The present invention provides for the preparation of an “optimized” lithium vanadium phosphate material. The materials are synthesized under conditions that avoid exposure to reducing gases, such as hydrogen, at high temperatures and thus materials of high performance are produced. The lithium vanadium phosphate materials so produced find use in producing electrodes for electrochemical cells.

Abstract: This invention relates to electrolytes containing ethyl methyl carbonate as a solvent for use in lithium cells or batteries containing metal phosphate cathodes. The invention further relates to electrolytes comprising ethyl methyl carbonate, ethylene carbonate, diethyl carbonate and propylene carbonate for use in lithium cells or batteries with metal phosphate cathodes, and to batteries employing such electrolytes. The electrolytes of the present invention are an improvement over other electrolytes used in lithium cells or batteries with metal phosphate cathodes in that the electrolytes are less prone to gassing and therefore have better shelf stability.