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US 7,008,566 B2Granted
Oligo phosphate-based electrode active materials and methods of making same
AssigneeValence Technology, Inc.
InventorsJeremy Barker, M. Yazid Saidi
Life of this patent
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Abstract
The invention provides an electrochemical cell which includes a first electrode and a second electrode which is a counter electrode to said first electrode, and an electrolyte material interposed there between. The first electrode includes an active material having an alkali metal-containing oligo phosphate-based electrode active material.
Claims26
A compound represented by the general nominal formula:
- AaMbXcO(3c+1),
- wherein:
- (a) A is at least one alkali metal, and 0<a≦6;
- (b) M=M1dM2cM3f, wherein:
- (i) M1 is at least one redox active element;
- (ii) M2 is at least one 2+ oxidation state non-redox active element;
- (iii) M3 is at least one 3+ oxidation state non-redox active element;
- and
- (iv) d, e and f>0;
- (d+e+f)=b;
- and 1≦b≦4;
- (c) X is selected from the group consisting of P, As, Sb, Si, Ge, V, S, and mixtures thereof;
- and
- (d) 2≦c≦5;
- wherein A, M1, M2, M3, X, a, c, d, e, and f are selected so as to maintain electroneutrality of the compound.
12 more elements
A battery, comprising:
- a first electrode comprising a compound represented by the general nominal formula:
- AaMbXcO(3c+1),
- wherein:
- (a) A is at least one alkali metal, and 0<a≦6;
- (b) M=M1dM2cM3f, wherein:
- (i) M1 is at least one redox active element;
- (ii) M2 is at least one 2+ oxidation state non-redox active element;
- (iii) M3 is at least one 3+ oxidation state non-redox active element;
- and
- (iv) d, e and f>0;
- (d+e+f)=b;
- and 1≦b≦4;
- (c) X is selected from the group consisting of P, As, Sb, Si, Ge, V, S, and mixtures thereof;
- and
- (d) 2≦c≦5;
- wherein A, M1, M2, M3, X, a, c, d, e, and f are selected so as to maintain electroneutrality of the compound;
- the battery further comprising a second counter electrode;
- and an electrolyte in ion-transfer relationship wit the first and second electrode.
15 more elements
Dependencies are inferred from the claim text.