Method for manufacturing fuel electrode support for solid oxide fuel cell and fuel electrode support for solid oxide fuel cell

Patent metadata

Field	Value
Publication number	US-2016197355-A1
Application number	US-201414911020-A
Country	US
Kind code	A1
Filing date	Sep 26, 2014
Priority date	Sep 27, 2013
Publication date	Jul 7, 2016
Grant date	—

Abstract

The present application relates to a method of manufacturing an anode supporter of a solid oxide fuel cell and an anode supporter of a solid oxide fuel cell, and may improve performance and durability of the fuel cell by improving an interfacial property between the anode supporter and an electrolyte.

First claim

1 . A method of manufacturing an anode supporter of a solid oxide fuel cell, the method comprising:
surface-treating at least one surface of the anode supporter including a metal and an inorganic oxide having oxygen ion conductivity by using a blast method.

2 . The method of claim 1 , wherein the blast method is a sand blast method or a ceramic bead blast method.

3 . The method of claim 2 , wherein a diameter of the sand or ceramic bead is 0.5 millimeters or more and 10 millimeters or less.

4 . The method of claim 1 , wherein in the blast method, a spray speed is 0.1 m/sec or more and 41.6 m/sec or less.

5 . The method of claim 1 , wherein in the blast method, a spray pressure is 0.5 bar or more and 5 bar or less.

6 . The method of claim 1 , wherein the metal is one or two or more selected from the group consisting of Zr, Ce, Ti, Mg, Al, Si, Mn, Fe, Co, Ni, Cu, Zn, Mo, Y, Nb, Sn, La, Ta, V, and Nd.

7 . The method of claim 1 , wherein the inorganic oxide having the oxygen ion conductivity is one or two or more selected from the group consisting of gadolinium doped ceria (GDC), gadolinium doped zirconia (GDZ), samarium doped ceria (SDC), samarium doped zirconia (SDZ), yttrium doped ceria (YDC), yttrium doped zirconia (YDZ), yttria stabilized zirconia (YSZ), and scandia stabilized zirconia (ScSZ).

8 . The method of claim 1 , wherein the surface-treated surface includes a concavo-convex unit having a width of 0.5 micrometers or more and 10 micrometers or less, and a height difference between a highest point and a lowest point of the concavo-convex unit is 0.1% or more and 50% or less of a total thickness of the anode supporter.

9 . The method of claim 1 , wherein a roughness of the surface-treated surface is 150 nanometers or more and 900 nanometers or less.

10 . The method of claim 1 , wherein an area specific resistance (ASR) of the surface-treated surface is 0.01 Ωcm2 or more and 0.45 Ωcm2 or less.

11 . The method of claim 1 , wherein a surface area of the surface-treated surface is increased by 1.5 times or more and 10 times or less as compared to a surface area before surface-treating.

12 . The method of claim 1 , wherein the surface-treated surface is a portion coming into contact with an electrolyte.

13 . A method of manufacturing a solid oxide fuel cell, the method comprising:
preparing an anode supporter by using the method of claim 1 ; and applying an inorganic oxide having ion conductivity on a surface-treated surface of the anode supporter to form an electrolyte.

14 . The method of claim 13 , wherein the inorganic oxide included in the electrolyte is the same as the inorganic oxide included in the anode supporter.

15 . An anode supporter of a solid oxide fuel cell manufactured by the manufacturing method of claim 1 .

16 . An anode supporter of a solid oxide fuel cell comprising:
a metal, and an inorganic oxide having oxygen ion conductivity, wherein a concavo-convex unit having a width of 0.5 micrometers or more and 10 micrometers or less is provided on at least one surface of the anode supporter, and a height difference between a highest point and a lowest point of the concavo-convex unit is 1% or more and 50% or less of a total thickness of the anode supporter.

17 . The anode supporter of claim 16 , wherein a roughness of the surface of the anode supporter having the concavo-convex unit is 150 nanometers or more and 900 nanometers or less.

18 . The anode supporter of claim 16 , wherein an area specific resistance (ASR) of the surface of the anode supporter having the concavo-convex unit is 0.01 Ωcm2 or more and 0.45 Ωcm2 or less.

19 . The anode supporter of claim 16 , wherein the surface of the anode supporter having the concavo-convex unit is a portion coming into contact with an electrolyte.

20 . A solid oxide fuel cell comprising:
the anode supporter of claim 16 ; a cathode positioned to face the anode supporter; and an electrolyte positioned between the anode supporter and the cathode.

21 . (canceled)

Assignees

• Lg Chemical Ltd

Inventors

• Heo Yeonhyuk
• Choi Kwangwook
• Lee Jongjin
• Oh Takkeun
• Son Bu Won

Classifications

• H01M8/02 Primary

  Details (electrodes H01M4/86 - H01M4/98) · CPC title

• H01M4/04

  Processes of manufacture in general · CPC title

• H01M4/8875

  Methods for shaping the electrode into free-standing bodies, like sheets, films or grids, e.g. moulding, hot-pressing, casting without support, extrusion without support · CPC title

• H01M4/803

  of only powdered material · CPC title

• H01M8/1226

  characterised by the supporting layer · CPC title