Lithium-based active materials and preparation thereof
AssigneeValence Technology, Inc.
InventorsJeremy Barker, M. Yazid Saidi
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Abstract
The invention provides novel lithium-mixed metal materials which, upon electrochemical interaction, release lithium ions, and are capable of reversibly cycling lithium ions. The invention provides a rechargeable lithium battery which comprises an electrode formed from the novel lithium-mixed metal materials. Methods for making the novel lithium-mixed metal materials and methods for using such lithium-mixed metal materials in electrochemical cells are also provided. The lithium-mixed metal materials comprise lithium and at least one other metal besides lithium. Preferred materials are lithium-mixed metal phosphates which contain lithium and two other metals besides lithium.
Claims46
A compound represented by the nominal formula LiFe1-yMgyPO4, wherein 0<y<1.
An electrode, comprising an active material represented by the nominal formula LiFe1-yMgyPO4, wherein 0<y<1.
A battery, comprising:
- a first electrode comprising an active material represented by the nominal formula LiFe1-yMgyPO4, wherein 0<y<1;
- a second electrode which is a counter-electrode to the first electrode;
- and
- an electrolyte.
Dependencies are inferred from the claim text.