Readily-deployable microbial fuel cell

Patent metadata

Field	Value
Publication number	US-11563228-B2
Application number	US-202117157466-A
Country	US
Kind code	B2
Filing date	Jan 25, 2021
Priority date	Mar 2, 2020
Publication date	Jan 24, 2023
Grant date	Jan 24, 2023

Abstract

A benthic microbial fuel cell comprising: a nonconductive frame having an upper end and a lower end; a plurality of anodes, wherein each anode is a conductive plate having a top section and a bottom edge; a plurality of conductive, threaded rods disposed perpendicularly to the anode plates and configured to secure the top sections of the anodes to the lower end of the frame and to hold the plates in a substantially parallel orientation with respect to each other such that none of the plates are in direct contact with each other; and a plurality of cathodes, wherein each cathode is made of carbon cloth connected to the upper end of the frame.

First claim

We claim:

1. A benthic microbial fuel cell comprising:
a nonconductive frame having an upper end and a lower end;
a plurality of anodes, wherein each anode is a conductive plate having a top section and a bottom edge;
a plurality of conductive, threaded rods disposed perpendicularly to the anode plates and configured to secure the top sections of the anodes to the lower end of the frame and to hold the plates in a substantially parallel orientation with respect to each other such that none of the plates are in direct contact with each other; and
a plurality of cathodes, wherein each cathode is made of carbon cloth connected to the upper end of the frame.

2. The benthic microbial fuel cell of claim 1 , wherein each conductive plate is covered by carbon cloth.

3. The benthic microbial fuel cell of claim 2 , wherein for each anode, the carbon cloth is adhered to one side of the conductive plate, folded over the bottom edge, and adhered to an opposite side of the conductive plate.

4. The benthic microbial fuel cell of claim 3 , wherein each cathode comprises a conductive wire sewn to the carbon cloth over a length of the carbon cloth, and wherein a first end of the wire is used to connect the cathode to the upper end of the frame.

5. The benthic microbial fuel cell of claim 4 , wherein the carbon cloth is scrunched on the wire.

6. The benthic microbial fuel cell of claim 4 , wherein a float is connected to a top end of each cathode.

7. The benthic microbial fuel cell of claim 6 , wherein a secondary float is connected to a bottom end of each cathode.

8. The benthic microbial fuel cell of claim 5 , wherein a second end of each cathode's wire is connected to the upper end of the frame.

9. The benthic microbial fuel cell of claim 3 , wherein the plates are held spaced apart by spacers that surround the threaded rod and are sandwiched between adjacent plates.

10. The benthic microbial fuel cell of claim 3 , wherein the plates are held spaced apart by a plurality of nuts and washers threaded onto the threaded rod.

11. The benthic microbial fuel cell of claim 3 , wherein the plates, the rods, and the wires are made of titanium.

12. The benthic microbial fuel cell of claim 11 , wherein no welded joints are present on the microbial fuel cell.

13. The benthic microbial fuel cell of claim 3 , further comprising a pressure housing mounted to the frame, wherein electrical connections from the cathodes and the anodes lead into the pressure housing.

14. The benthic microbial fuel cell of claim 4 , further comprising a conductive rail connected to the upper end, wherein the wires of all the cathodes are electrically connected to the conductive rail.

15. The benthic microbial fuel cell of claim 1 , wherein the plates are made of three-dimensionally-printed conductive material.

16. The benthic microbial fuel cell of claim 13 , wherein the pressure housing contains electronics for measuring power generation potential of a given location and wherein current generated by the benthic microbial fuel cell is dissipated by a resistor.

17. The benthic microbial fuel cell of claim 3 , wherein the conductive plates are less than a millimeter thick.

Assignees

• Us Navy

Inventors

• Bond Matthew Lanford
• Arias-Thode Yolanda Meriah
• Hsu Lewis
• Chadwick David Bart

Classifications

• H01M8/16 Primary

  Biochemical fuel cells, i.e. cells in which microorganisms function as catalysts · CPC title

• H01M4/96

  Carbon-based electrodes · CPC title

• H01M8/04611

  of the individual fuel cell · CPC title

• H01M8/0206

  Metals or alloys · CPC title

• H01M8/002

  Shape, form of a fuel cell · CPC title