Seawater battery circulation system, seawater battery, cathode of seawater battery and fabrication method thereof

Patent metadata

Field	Value
Publication number	US-10529994-B2
Application number	US-201615226910-A
Country	US
Kind code	B2
Filing date	Aug 2, 2016
Priority date	Apr 18, 2016
Publication date	Jan 7, 2020
Grant date	Jan 7, 2020

Abstract

A seawater battery includes an anode and a cathode corresponding to the anode. The cathode cooperates with the anode to produce a current and includes a metal substrate and a mixture coating layer. The mixture coating layer covered on the metal substrate includes a conductive polymer material and a plurality of carbon nanotubes mixed with the conductive polymer material.

First claim

What is claimed is:

1. A cathode of a seawater battery, comprising:
a metal substrate; and
a mixture coating layer covered on the metal substrate, and comprising:
a conductive polymer material; and
a plurality of carbon nanotubes mixed with the conductive polymer material.

2. The cathode of claim 1 , wherein the metal substrate is a nickel substrate.

3. The cathode of claim 2 , wherein the metal substrate is a mesh-shaped substrate.

4. The cathode of claim 1 , wherein the conductive polymer material is PEDOT:PSS.

5. The cathode of claim 1 , wherein each of the carbon nanotubes is a multi-wall carbon nanotube.

6. A seawater battery, comprising:
an anode; and
a cathode corresponding to the anode, wherein the cathode cooperates with the anode to produce a current, and the cathode comprises:
a metal substrate; and
a mixture coating layer covered on the metal substrate, and comprising:
a conductive polymer material; and
a plurality of carbon nanotubes mixed with the conductive polymer material.

7. The seawater battery of claim 6 , wherein the metal substrate is a nickel substrate, and the anode is made of magnalium.

8. The seawater battery of claim 7 , wherein the metal substrate is a mesh-shaped substrate.

9. The seawater battery of claim 6 , wherein the conductive polymer material is PEDOT:PSS.

10. A fabrication method of a cathode of a seawater battery, comprising:
providing a metal substrate;
forming a mixture coating liquid, wherein the mixture coating liquid comprises a conductive polymer material and a plurality of carbon nanotubes;
coating the mixture coating liquid on the metal substrate; and
drying the mixture coating liquid at a room temperature to form a mixture coating layer on an outside surface of the metal substrate.

11. The fabrication method of claim 10 , wherein the step of forming the mixture coating liquid comprises:
mixing the conductive polymer material and the carbon nanotubes at a storage temperature to form a mixture liquid; and
shaking the mixture liquid at the storage temperature via a supersonic vibration to mix the conductive polymer material and the carbon nanotubes uniformly so as to form the mixture coating liquid.

12. The fabrication method of claim 11 , wherein the conductive polymer material is PEDOT:PSS, and the storage temperature is 4° C. to 8° C.

13. The fabrication method of claim 10 , wherein a weight percentage of the carbon nanotubes in the mixture coating liquid is larger than or equal to 1 and smaller than or equal to 6.

14. The fabrication method of claim 10 , wherein the metal substrate is a nickel substrate.

Assignees

• Univ Nat Tsing Hua

Inventors

• Hsu Wen-Kuang
• Chen Hsiao-Ling
• Tsai Hsin-Jung

Classifications

• H01M4/46

  Alloys based on magnesium or aluminium · CPC title

• H01M4/583

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

• H01M4/602

  Polymers · CPC title

• H01M4/364

  as mixtures · CPC title

• H01M4/08

  Processes of manufacture · CPC title