IP Library Granted Patent US 12,218,348
Granted Patent B2
US 12,218,348 · App. 17/606,354 · Granted Feb 4, 2025

Expanded hydrated vanadate

Inventors: Guozhong Cao (Seattle, WA); Chaofeng Liu (Seattle, WA)
Assignee: University of Washington
H01M4/485H01M10/36H01M2004/028
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Quick Facts
Patent No.
US 12,218,348
App. No.
17/606,354
Granted
Feb 4, 2025
Kind
B2
Abstract

The present disclosure generally relates to cation-stabilized expanded hydrated vanadates, electrodes made therefrom, and batteries incorporating cathodes made from the cation-stabilized expanded hydrated vanadate.

Claims (22)

1. A composition comprising a cationically stabilized vanadate hydrate having the chemical formula M x V 2 O 5 ·nH 2 O, wherein M is a cation and having a structure defined by layers of vanadium oxide separated by the cation and water, which provide spacing and stabilization between the layers, wherein the cationically stabilized vanadate hydrate has a greater interplanar spacing when compared to a vanadate hydrate formed by the same method but without the cation, and wherein the interplanar spacing is about 12.9 Å.

2. The composition of claim 1 , wherein the cationically stabilized vanadate hydrate is present predominantly in a single phase.

3. The composition of claim 1 , wherein the cationically stabilized vanadate hydrate is structurally and thermally more stable when compared to a vanadate hydrate formed by the same method but without the cation.

4. The composition of claim 1 , wherein the cationic stabilization results from an inclusion of a cation of optimal ionic radius selected from the group of manganese, chromium, titanium, scandium, iron, copper, nickel, cobalt, zinc, yttrium, zirconium, niobium, cadmium, aluminum, magnesium, potassium, calcium, sodium, and combinations thereof.

5. The composition of claim 1 , wherein the cationic stabilization results from an inclusion of a cation selected from the group of calcium, magnesium, potassium, aluminum, manganese, iron, cobalt, nickel, copper, zinc, and combinations thereof.

6. The composition of claim 1 , wherein M is a Mn (II) cation.

7. The composition of claim 1 , wherein the cation is bonded to the vanadium oxide.

8. An electrode comprising a composition according to claim 1 .

9. The electrode of claim 8 , wherein the electrode is configured for use in a battery.

10. The electrode of claim 9 , wherein the battery is multivalent-ion battery.

11. The electrode of claim 10 , wherein the battery is an aqueous zinc-ion battery.

12. The electrode of claim 8 , wherein the specific capacity is 250 mAh/g at a current density of 0.5 A/g or greater.

13. The electrode of claim 8 , wherein the electrode is configured for use in a supercapacitor.

14. An aqueous battery comprising a cathode, the cathode comprising:

a cationically stabilized vanadate hydrate having a structure defined by layers of vanadium oxide separated by a cation and water, which provide spacing and stabilization between the layers,

wherein the cathode comprises the chemical formula M x V 2 O 5 ·nH 2 O, wherein M is Mn (II),

wherein the specific capacity is 400 mAh/g at a current density of 0.05 A/g or greater, and

wherein the battery has a capacity retention of 80% or greater.

15. The aqueous battery of claim 14 , wherein the aqueous battery is multivalent-ion battery.

16. The aqueous battery of claim 15 , wherein the battery is an aqueous zinc-ion battery.

17. The aqueous battery of claim 14 , wherein the battery has a shelf life of 50 days or greater.

18. The aqueous battery of claim 14 , wherein the battery has an energy efficiency of 70% or greater.

Assignments (2)
CONFIRMATORY LICENSE Recorded Jun 18, 2025
From: UNIVERSITY OF WASHINGTON
To: NATIONAL SCIENCE FOUNDATION
Reel/Frame 071679/0638 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Dec 28, 2021
From: CAO, GUOZHONG; LIU, CHAOFENG
To: UNIVERSITY OF WASHINGTON
Reel/Frame 058489/0492 →
Continuity (2)
Provisional Application 62848458 · May 15, 2019
Related Publication 20220238868A1 · Jul 28, 2022
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