Valence Technology, Inc.

Intematix Corporation

Biying Huang

Yi-Qun Li

M Yazid Saidi

Jeffrey L Swoyer

George William Adamson

Haitao Huang

Xiongfei Shen

The present invention provides a cost effective process of generating LiMZO/carbon composite material. Further, this novel method of preparation can be modified by adding a dopant and the calcinations can be carried out using microwave heating to reduce the synthesis time and cost. The LiMZO/carbon composite material can be used as a cathode for a secondary electrochemical cell. Selection of one or more metals in the cathode material can be used change the voltage, the capacity, and the energy density of the electrochemical cell.

[object Object]

The present invention relates to a method for preparing an electroactive metal polyanion or a mixed metal polyanion comprising forming a slurry comprising a polymeric material, a solvent, a polyanion source or alkali metal polyanion source and at least one metal ion source; heating said slurry at a temperature and for a time sufficient to remove the solvent and form an essentially dried mixture; and heating said mixture at a temperature and for a time sufficient to produce an electroactive metal polyanion or electroactive mixed metal polyanion. In an alternative embodiment the present invention relates to a method for preparing a metal polyanion or a mixed metal polyanion which comprises mixing a polymeric material with a polyanion source or alternatively an alkali metal polyanion source and a source of at least one metal ion to produce a fine mixture and heating the mixture to a temperature higher than the melting point of the polymeric material, milling the resulting material and then heating the milled material. It is another object of the invention to provide electrochemically active materials produced by said methods. The electrochemically active materials so produced are useful in making electrodes and batteries.

Synthesis of cathode active materials

This invention relates to crosslinked polymers useful as electrolytes in rechargeable batteries, to electrolytes containing such crosslinked polymers, to methods for making such polymer electrolytes, to electrodes incorporating such crosslinked polymers, to rechargeable batteries employing such crosslinked polymers as the electrolyte and to methods for producing such batteries.

Crosslinked polymer electrolytes and method of making such crosslinked polymers

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Henderson, NV, United States of America

Biying Huang