Lithium-containing phosphates, method of preparation, and use thereof
AssigneeValence Technology, Inc.
InventorsJeremy Barker, M. Yazid Saidi
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Abstract
The invention provides an electrochemical cell which comprises a first electrode and a second electrode which is a counter electrode to said first electrode. The first electrode comprises a phosphorous compound of the general formula, Li.sub.3 M'M" (PO.sub.4).sub.3. M' and M" are the same or different from one another. Where M' and E" are the same, they are metals having more than one oxidation state. Where M' and M" are different from one another, they are selected from the group of metals where at least one of M' and M" has more than one oxidation state.
Claims5
A lithium ion battery comprising:
- a first electrode having an active material selected from the group consisting of Li.sub.3-x V.sub.2 (PO.sub.4).sub.3, with 0.ltoreq..times..ltoreq.3, Li.sub.3-x VTi(PO.sub.4).sub.3 with 0.ltoreq..times..ltoreq.3, Li.sub.3-x FeV(Po.sub.4).sub.3 with 0.ltoreq..times..ltoreq.3, and mixtures thereof;
- a second electrode which is a counter-electrode to said first electrode;
- and
- an electrolyte between said electrodes.
A lithium ion battery comprising:
- a first electrode having an active material of the nominal general formula Li.sub.3 M'.sub.y M".sub.2-y (PO.sub.4).sub.3, 0.ltoreq.y.ltoreq.2, where M' is V and M" is a transition metal selected from the group consisting of titanium (Ti), iron (Fe), vanadium (V), chromium (cr), manganese (Mn), cobalt (Co), molyldenum (Mo), nickel (Ni) and copper (Cu);
- a second electrode which is a counter-electrode to said first electrode;
- and
- an electrolyte between said electrodes.
A lithium ion battery comprising:
- a first electrode having an active material of the nominal general formula Li.sub.3 M'.sub.y M".sub.2-y (PO.sub.4).sub.3, 0.ltoreq.y.ltoreq.2, where M' and M" are the same or different from one another and are each independently selected from the group consisting of vanadium (V), chromium (Cr), manganese (Mn), cobalt (Co), molybdenum (Mo), nickel (Ni) and copper (Cu);
- a second electrode which is a counter-electrode to said first electrode;
- and
- an electrolyte between said electrodes.
A lithium ion battery comprising:
- a first electrode having an active material of the nominal general formula Li.sub.3 M'.sub.y M".sub.2-y (PO.sub.4).sub.3, 0.ltoreq.y.ltoreq.2, where M' is Fe and M" is different from Fe and selected from the group consisting of vanadium (V), chromium (Cr), manganese (Mn), cobalt (Co), molybdenum (Mo), nickel (Ni) and copper (Cu);
- a second electrode which is a counter-electrode to said first electrode;
- and
- an electrolyte between said electrodes.
A lithium ion battery comprising:
- a first electrode having an active material of the nominal general formula Li.sub.3 M'.sub.y M".sub.2-y (PO.sub.4).sub.3, 0.ltoreq.y.ltoreq.2, where M' is Ti and M" is different from Ti and selected from the group consisting of vanadium (V), chromium (Cr), manganese (Mn), cobalt (Co), molybdenum (Mo), nickel (Ni) and copper (Cu);
- a second electrode which is a counter-electrode to said first electrode;
- and
- an electrolyte between said electrodes.
Dependencies are inferred from the claim text.