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US 9,997,778 B2Granted
Polycrystalline vanadium oxide nanosheets
AssigneeUniversity of Washington through its Center for Commercialization
InventorsGuozhong Cao, Yanwei Li
Life of this patent
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Abstract
Improved V2O5 materials are disclosed herein in the form of 2D leaf-like nanosheets. Methods of forming the V2O5 nanosheets and batteries (e.g., lithium-ion) incorporating the V2O5 nanosheets are also provided.
Claims6
A method of forming polycrystalline V2O5 nanosheets comprising the steps of:
- (a) providing a V2O5 gel by sonicating a solution of hydrogen peroxide and V2O5 powder;
- (b) freezing the V2O5 gel to provide a pre-frozen V2O5 gel;
- (c) lyophilizing the pre-frozen V2O5 gel to provide lyophilized V2O5;
- and
- (d) annealing the lyophilized V2O5 by heating to a temperature of at least 350° C. to provide polycrystalline V2O5 nanosheets,
- wherein the hydrogen peroxide and the V2O5 powder are present in a molar ratio of H2O2:V2O5 of about 16:1.
3 more elements
Dependencies are inferred from the claim text.