# US 2019/0379079 A1 · Methods of preparing a vanadium electrolyte and mixtures therefor > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0379079 A1 - Document ID: US20190379079A1 - Status: Published application - Kind: A1 - Application number: 16/384,654 - Filed: 2019-04-15 - Published: 2019-12-12 - Earliest claimed: 2018-04-13 - Assignees: UniEnergy Technologies, LLC - Applicants: UniEnergy Technologies, LLC - Inventors: Yueqi Liu; Liyu Li; Chenxi Sun; Richard O. Winter; Zhenguo Yang - Web page: https://patentgrep.com/patent/US20190379079A1 ## CPC - H01M 8/188: {by recharging of redox couples containing fluids; Redox flow type batteries} - C01G 31/02: Oxides - H01M 8/143: {with liquid, solid or electrolyte-charged reactants} - H01M 2300/0002: Aqueous electrolytes - Y02E 60/50: Fuel cells - H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY - C01G: COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F (metal hydrides {monoborane, diborane or addition complexes thereof} C01B6/00; salts of oxyacids of halogens C01B11/00; peroxides, salts or peroxyacids C01B15/00; thiosulfates, dithionites, polythionates C01B17/64; compounds containing selenium, or tellurium C01B19/00; binary compounds of nitrogen with metals C01B21/06; azides C01B21/08; {compounds containing nitrogen, other non-metals and metal C01B21/082}; metal amides C01B21/092; nitrites C01B21/50; {compounds of noble gases C01B23/0005}; phosphides C01B25/08; salts of oxyacids of phosphorus C01B25/16; carbides C01B32/90; compounds containing silicon C01B33/00; compounds containing boron C01B35/00; compounds having molecular sieve properties but not having base-exchange properties C01B37/00; compounds having molecular sieve and base-exchange properties, e.g. crystalline zeolites, C01B39/00; cyanides C01C3/08; salts of cyanamide C01C3/16; thiocyanates C01C3/20) - Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION ## Abstract In one embodiment of the present disclosure, a composition for producing a vanadium electrolyte includes a vanadium compound and an ion solution containing vanadium ions and hydrogen ions. In another embodiment, a method for producing a vanadium electrolyte includes obtaining a vanadium compound, and mixing the vanadium compound with an ion solution containing vanadium ions and hydrogen ions. ## Claims ### Claim 1 A composition for producing a vanadium electrolyte, the composition comprising: a vanadium compound; and an ion solution containing vanadium ions and hydrogen ions. ### Claim 2 (depends on 1) The composition of claim 1, wherein the ion solution includes at least one group of vanadium ions having a different oxidation state than the oxidation state of the vanadium ions produced by dissolving the vanadium compound. ### Claim 3 (depends on 1) The composition of claim 1, wherein the vanadium compound is selected from the group consisting of trivalent vanadium (V(III)) compound, tetravalent vanadium (V(IV)) compound, pentavalent vanadium (V(V)) compound, or mixtures thereof. ### Claim 4 (depends on 1) The composition of claim 1, wherein the vanadium compound is selected from the group consisting of V2O3 trivalent vanadium (V(III)) compound, VCl3 trivalent vanadium (V(III)) compound, V2(SO4)3 trivalent vanadium (V(III)) compound, V2O4 tetravalent vanadium (V(IV)) compound, VOSO4 tetravalent vanadium (V(IV)), V2O5 tetravalent vanadium (V(V)) compound, and mixtures thereof. ### Claim 5 (depends on 1) The composition of claim 1, wherein the ion solution includes vanadium ions selected from the group consisting of bivalent vanadium (V(II)) ions, trivalent vanadium (V(III)) ions, and pentavalent vanadium (V(V)) ions, or any combinations thereof. ### Claim 6 (depends on 1) The composition of claim 1, wherein the ion solution includes an acid selected from the group consisting of sulfuric acid, hydrochloric acid, phosphoric acid, nitric acid, and any combination thereof. ### Claim 7 (depends on 1) The composition of claim 1, wherein the total vanadium concentration of the vanadium electrolyte is in the range of 0.5 M to 12 M or in the range of 1.5 M to 12 M. ### Claim 8 A method for producing a vanadium electrolyte, the method comprising: obtaining a vanadium compound; and mixing the vanadium compound with an ion solution containing vanadium ions and hydrogen ions. ### Claim 9 (depends on 8) The method of claim 8, wherein the ion solution includes at least one group of vanadium ions having a different oxidation state than the oxidation state of the vanadium ions produced by dissolving the vanadium compound. ### Claim 10 (depends on 8) The method of claim 8, wherein the vanadium compound is selected from the group consisting of trivalent vanadium (V(III)) compound, tetravalent vanadium (V(IV)) compound, pentavalent vanadium (V(V)) compound, or mixtures thereof. ### Claim 11 (depends on 8) The method of claim 8, wherein the vanadium compound is selected from the group consisting of V2O3 trivalent vanadium (V(III)) compound, VCl3 trivalent vanadium (V(III)) compound, V2(SO4)3 trivalent vanadium (V(III)) compound, V2O4 tetravalent vanadium (V(IV)) compound, VOSO4 tetravalent vanadium (V(IV)), V2O5 tetravalent vanadium (V(V)) compound, and mixtures thereof. ### Claim 12 (depends on 8) The method of claim 8, wherein the ion solution includes vanadium ions selected from the group consisting of bivalent vanadium (V(II)) ions, trivalent vanadium (V(III)) ions, and pentavalent vanadium (V(V)) ions, or any combinations thereof. ### Claim 13 (depends on 8) The method of claim 8, wherein the ion solution includes an acid selected from the group consisting of sulfuric acid, hydrochloric acid, phosphoric acid, nitric acid, and any combination thereof. ### Claim 14 (depends on 8) The method of claim 8, wherein the total vanadium concentration of the vanadium electrolyte is in a range of 0.5 M to 12 M or in a range of 1.5 M to 12 M. ### Claim 15 (depends on 8) The method of claim 8, wherein the vanadium compound is mixed with the ion solution at a temperature selected from the group consisting of less than 70° C., less than 60° C., and ambient temperature. ### Claim 16 (depends on 8) The method of claim 8, wherein the reaction time for a complete reaction dissolution of the vanadium compound is within a period of less than 10 minutes, less than 3 hours, and less than 5 hours. ### Claim 17 (depends on 8) The method of claim 8, wherein the vanadium ion solution is generated by a redox flow battery (RFB). ### Claim 18 A method for producing a vanadium electrolyte, the method comprising: obtaining a vanadium compound selected from the group consisting of trivalent vanadium (V(III)) compound, tetravalent vanadium (V(IV)) compound, pentavalent vanadium (V(V)) compound, or mixtures thereof; and mixing the vanadium compound with an acidic vanadium ion solution, wherein the vanadium ion solution is selected from the group consisting of bivalent vanadium (V(II)) ions, trivalent vanadium (V(III)) ions, and pentavalent vanadium (V(V)) ions, or any combinations thereof, wherein the vanadium ion solution includes at least one group of vanadium ions having a different oxidation state than the oxidation state of the vanadium ions produced by dissolving the vanadium compound. ### Claim 19 (depends on 18) The method of claim 18, wherein the mixed vanadium compounds include trivalent vanadium (V(III)) compound and pentavalent vanadium (V(V)) compound or trivalent vanadium (V(III)) compound and tetravalent vanadium (V(IV)) compound. ### Claim 20 (depends on 18) The method of claim 18, wherein the vanadium compound includes pentavalent vanadium (V(V)) compound or tetravalent vanadium (V(IV)) compound, and the vanadium ion solution includes bivalent vanadium (V(II)) ions or trivalent vanadium (V(III)) ions. ### Claim 21 (depends on 18) The method of claim 18, wherein the vanadium compound includes trivalent vanadium (V(III)) compound and the vanadium ion solution includes pentavalent vanadium (V(V)) ions.