Electrochemical capacitor device with a biofilm

Patent metadata

Field	Value
Publication number	US-11862394-B2
Application number	US-202017423824-A
Country	US
Kind code	B2
Filing date	Jan 14, 2020
Priority date	Jan 16, 2019
Publication date	Jan 2, 2024
Grant date	Jan 2, 2024

Abstract

An electrochemical capacitor ( 300 ) for use with a biofilm is presented. The electrochemical capacitor includes a first electrode ( 324 ) coupled to a first porous layer ( 326 ), a second electrode ( 334 ) coupled to a second porous layer ( 336 ); and an electrolyte ( 310 ) provided between the first porous layer ( 326 ) and the second porous layer ( 336 ). At least one of the first porous layer ( 326 ) and the second porous layer ( 336 ) has a plurality of cavities adapted to receive redox-active metabolites produced by the biofilm. Also presented is an electrochemical capacitor device, such as a skin patch that includes a support layer attached to the electrochemical capacitor ( 300 ). Also presented is a power source that includes the electrochemical capacitor ( 300 ) and a biofilm provided between the first electrode ( 324 ) and the second electrode ( 334 ) of the electrochemical capacitor ( 300 ).

First claim

The invention claimed is:

1. An electrochemical capacitor for use with a biofilm, the electrochemical capacitor comprising a first electrode coupled to a first porous layer, a second electrode coupled to a second porous layer; and an electrolyte provided between the first porous layer and the second porous layer; wherein at least one of the first porous layer and the second porous layer comprises a plurality of cavities adapted to receive redox active metabolites produced by the biofilm; wherein the electrochemical capacitor comprises a pseudocapacitance and a double-layer capacitance; and wherein when the biofilm grows between first and the second electrodes the first porous layer stores charges to charge the electrochemical capacitor.

2. The electrochemical capacitor as claimed in claim 1 , wherein the first and second electrodes are carbon based.

3. The electrochemical capacitor as claimed in claim 1 , wherein the cavities have an average diameter ranging from about 0.2 μm to about 10 μm.

4. The electrochemical capacitor as claimed in claim 1 , wherein the first and second porous layers comprise a gel or a polymer.

5. The electrochemical capacitor as claimed in claim 1 , wherein the first and second porous layers comprise a nanomaterial or wherein at least one of the first and second porous layers comprise graphene oxide.

6. The electrochemical capacitor as claimed in claim 4 , wherein the gel is a polyvinyl alcohol gel.

7. The electrochemical capacitor as claimed in claim 1 , wherein the first electrode is an anode and the second electrode is a cathode.

8. The electrochemical capacitor as claimed in claim 7 , wherein the first porous layer comprises a redox mediator.

9. The electrochemical capacitor as claimed in claim 8 , wherein the redox mediator is manganese dioxide.

10. The electrochemical capacitor as claimed in claim 1 , wherein the electrolyte is a biocompatible electrolyte compatible with the formation of the biofilm.

11. The electrochemical capacitor as claimed in claim 10 , wherein the electrolyte is a gel.

12. The electrochemical capacitor as claimed in claim 11 wherein the gel comprises at least one of glucose and citrate.

13. The electrochemical capacitor as claimed in claim 1 , wherein the electrolyte comprises an ionic liquid.

14. The electrochemical capacitor as claimed in claim 1 , wherein at least one of the first and second porous layers comprises an ionic liquid.

15. An electrochemical capacitor device comprising a support layer attached to an electrochemical capacitor as claimed in claim 1 .

16. The electrochemical capacitor device as claimed in claim 15 , comprising a plurality of interdigitated electrodes forming a plurality of electrochemical capacitors.

17. A skin patch comprising a support layer attached to an electrochemical capacitor for use with a biofilm, the electrochemical capacitor comprising a first electrode coupled to a first porous layer, a second electrode coupled to a second porous layer; and an electrolyte provided between the first porous layer and the second porous layer; wherein at least one of the first porous layer and the second porous layer comprises a plurality of cavities adapted to receive redox-active metabolites produced by the biofilm; and wherein the support layer is adapted to provide adhesion to a skin region of a subject.

18. A power source comprising an electrochemical capacitor as claimed in claim 1 and a biofilm provided between the first electrode and the second electrode of the electrochemical capacitor.

19. A wearable device comprising a power source as claimed in claim 18 .

20. Use of an electrochemical capacitor for disrupting or destroying a biofilm, wherein the electrochemical capacitor comprises a first electrode coupled to a first porous layer, a second electrode coupled to a second porous layer; and an electrolyte provided between the first porous layer and the second porous layer; wherein at least one of the first porous layer and the second porous layer comprises a plurality of cavities adapted to receive redox-active metabolites produced by the biofilm; wherein the electrochemical capacitor comprises a pseudocapacitance and a double-layer capacitance; and wherein when the biofilm grows between first and the second electrodes the first porous layer stores charges to charge the electrochemical capacitor.

Assignees

• Univ Durham

Inventors

• Kataky Ritu
• Coleman Karl
• Sharples Gary

Classifications

• H01G11/02 Primary

  using combined reduction-oxidation reactions, e.g. redox arrangement or solion · CPC title

• H01G11/04

  Hybrid capacitors · CPC title

• H01G11/24

  characterised by structural features of the materials making up or comprised in the electrodes, e.g. form, surface area or porosity; characterised by the structural features of powders or particles used therefor · CPC title

• H01G11/26

  characterised by their structure, e.g. multi-layered, porosity or surface features · CPC title

• H01G11/36

  Nanostructures, e.g. nanofibres, nanotubes or fullerenes · CPC title