Graphene oxide based electrochemical cell and battery

Patent metadata

Field	Value
Publication number	US-9979052-B2
Application number	US-201514752309-A
Country	US
Kind code	B2
Filing date	Jun 26, 2015
Priority date	Jun 26, 2015
Publication date	May 22, 2018
Grant date	May 22, 2018

Abstract

A graphene oxide based electrochemical cell and a battery containing a plurality of electrochemical cells, at least one of which is the graphene oxide based electrochemical cell. The graphene oxide based electrochemical cell includes an aqueous electrolyte solution, an anode and a cathode contained in a vessel, wherein the aqueous electrolyte solution includes water, graphene oxide nanosheets and CuCl 2 dissolved in the water.

First claim

The invention claimed is:

1. A graphene oxide based electrochemical cell, comprising: an aqueous electrolyte solution, an aluminum anode and a graphene-coated graphite cathode contained in a vessel,
wherein the aqueous electrolyte solution consists of water, graphene oxide nanosheets and CuCl 2 , and optionally at least one selected from the group consisting of silver nitrate and gold chloride, dissolved in the water,
wherein the graphene oxide nanosheets are present in the aqueous electrolyte solution in an amount of from 0.5 mg/ml to 5 mg/ml and the CuCl 2 is present in the aqueous electrolyte solution in concentration of from 0.5 M to 5M.

2. The graphene oxide based electrochemical cell of claim 1 , wherein the distance between the anode and the cathode ranges from about 1 cm to about 5 cm.

3. The graphene oxide based electrochemical cell of claim 1 , wherein the open circuit voltage of said graphene oxide based electrochemical cell is at least 0.59 V.

4. The graphene oxide based electrochemical cell of claim 1 , wherein the short circuit current of said graphene oxide based electrochemical cell is at least 95.10 mA.

5. The graphene oxide based electrochemical cell of claim 1 , wherein the maximum power of said graphene oxide based electrochemical cell is at least about 13 mW.

6. The graphene oxide based electrochemical cell of claim 1 , wherein the aqueous electrolyte solution consists of water, the graphene oxide nanosheets, the CuCl 2 and at least one selected from the group consisting of silver nitrate and gold chloride.

7. The graphene oxide based electrochemical cell of claim 1 , wherein the graphene oxide nanosheets consist of C and O.

8. The graphene oxide based electrochemical cell of claim 1 , wherein the vessel is glass and the cathode and anode are at opposite sides thereof, and the anode and the cathode are separated by a distance that is less than the lengths of the anode and the cathode.

9. The graphene oxide based electrochemical cell of claim 1 , wherein the graphene oxide nanosheets are present in the aqueous electrolyte solution in an amount of from 0.5 mg/ml to 1 mg/ml and the CuCl 2 is present in the aqueous electrolyte solution in concentration of from 0.5 M to 1M.

10. A battery, comprising:
a plurality of electrochemical cells,
wherein at least one electrochemical cell comprises an aqueous electrolyte solution, an aluminum anode and a graphene-coated graphite cathode contained in a vessel,
wherein the aqueous electrolyte solution consists of water, graphene oxide nanosheets and CuCl 2 , and optionally at least one selected from the group consisting of silver nitrate and gold chloride, dissolved in the water,
wherein the graphene oxide nanosheets are present in the aqueous electrolyte solution in an amount of from 0.5 mg/ml to 5 mg/ml and the CuCl 2 is present in the aqueous electrolyte solution in concentration of from 0.5 M to 5M.

11. The battery of claim 10 , wherein the plurality of electrochemical cells is connected electrically in series and/or in parallel.

12. The battery of claim 10 , wherein the aqueous electrolyte solution consists of water, the graphene oxide nanosheets, the CuCl 2 and at least one selected from the group consisting of silver nitrate and gold chloride.

13. The battery of claim 10 , wherein the graphene oxide nanosheets consist of C and O.

14. The battery of claim 10 , wherein the vessel is glass and the cathode and anode are at opposite sides thereof, and the anode and the cathode are separated by a distance that is less than the lengths of the anode and the cathode.

15. The battery of claim 10 , wherein the graphene oxide nanosheets are present in the aqueous electrolyte solution in an amount of from 0.5 mg/ml to 1 mg/ml and the CuCl 2 is present in the aqueous electrolyte solution in concentration of from 0.5 M to 1M.

Assignees

• Univ King Abdulaziz

Inventors

• Al-Ghamdi Ahmed A
• Al-Turki Yusuf
• Yakuphanoglu Fahrettin
• El-Tantawy Farid

Classifications

• H01M2220/20

  Batteries in motive systems, e.g. vehicle, ship, plane · CPC title

• H01M6/045

  characterised by aqueous electrolyte · CPC title

• H01M10/36 Primary

  Accumulators not provided for in groups H01M10/05-H01M10/34 · CPC title

• H01M4/38

  of elements or alloys · CPC title

• H01M4/583

  Carbonaceous material, e.g. graphite-intercalation compounds or CFx · CPC title