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

Patent metadata

Field	Value
Publication number	US-2017301927-A1
Application number	US-201615226910-A
Country	US
Kind code	A1
Filing date	Aug 2, 2016
Priority date	Apr 18, 2016
Publication date	Oct 19, 2017
Grant date	—

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.

15 . A seawater battery circulation system applied to a seawater, comprising:
a pumping device for pumping the seawater; a seawater storing device connected to the pumping device, wherein the seawater storing device is for storing the seawater; an aerating device disposed in the seawater storing device, wherein the aerating device is for increasing an amount of dissolved oxygen of the seawater; the seawater battery of claim 6 , wherein the seawater battery is connected to the seawater storing device and allows the seawater flowing in to produce a power; and a filtering device connected to the pumping device, wherein the filtering device is for filtering an impurity of the seawater, and comprises:
a precipitate collecting device for collecting the impurity.

16 . The seawater battery circulation system of claim 15 , wherein the aerating device comprises:
a plurality of blades agitating the seawater to increase the amount of dissolved oxygen.

17 . The seawater battery circulation system of claim 15 , wherein the metal substrate of the seawater battery is a mesh-shaped substrate made of nickel.

18 . The seawater battery circulation system of claim 17 , wherein the conductive polymer material of the seawater battery is PEDOT:PSS.

19 . The seawater battery circulation system of claim 15 , further comprising:
an adjusting unit disposed between the cathode and the anode of the seawater battery, wherein the adjusting unit is for changing a quantity of the seawater flowing form the anode toward the cathode.

20 . The seawater battery circulation system of claim 19 , wherein the adjusting unit comprises:
a first frame, comprising:
a plurality of first ribs spaced form each other; and
a second frame corresponding to the first frame, wherein the second frame is abutted against the first frame, and comprises:
a plurality of second ribs spaced from each other, wherein each of the second ribs is corresponding to each of the first ribs;
wherein the first frame is movable between a first position and a second position with respect to the second frame, each of the first ribs overlaps with each of the second ribs while the first frame is at the first position, and each of the first ribs is staggered from each of the second ribs while the first frame is at the second position.

Assignees

• Nat Univ Tsing Hua

Inventors

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

Classifications

• H01M4/364

  as mixtures · CPC title

• H01M4/46

  Alloys based on magnesium or aluminium · CPC title

• H01M4/602

  Polymers · CPC title

• H01M4/583

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

• H01M4/661

  Metal or alloys, e.g. alloy coatings (H01M4/669 take precedence) · CPC title