阅读说明：本技术 微管式固体氧化物燃料电池串接结构及串接方法 (Micro-tube type solid oxide fuel cell serial connection structure and serial connection method ) 是由 马跃 梁波 姚越 王陈鹏 林军 于 2021-10-12 设计创作，主要内容包括：本发明涉及微管式固体氧化物燃料电池串接结构及串接方法,包括第一微管式燃料电池管、第二微管式燃料电池管及连接材料；第一微管式燃料电池包括第一阴极层、第一隔离层、第一电解质层及第一阳极管；在第一阴极层上设有第一缺口,在第一隔离层设有第二缺口,在第一电解质层上设有第三缺口,第一缺口、第二缺口及第三缺口相通；第二微管式燃料电池包括第二阴极层、第二隔离层、第二电解质层及第二阳极管；连接材料的一端穿过第一缺口、第二缺口及第三缺口与第一阳极管电连接,连接材料的另一端与第二阴极层电连接。其具有串接稳定,不会断开,在高温还原氧化的环境下能保持好的导电性,电池运作稳定等优点。(The invention relates to a micro-tube type solid oxide fuel cell serial connection structure and a serial connection method, comprising a first micro-tube type fuel cell tube, a second micro-tube type fuel cell tube and a connecting material; the first microtube type fuel cell comprises a first cathode layer, a first isolating layer, a first electrolyte layer and a first anode tube; a first notch is formed in the first cathode layer, a second notch is formed in the first isolation layer, a third notch is formed in the first electrolyte layer, and the first notch, the second notch and the third notch are communicated; the second microtube type fuel cell comprises a second cathode layer, a second isolating layer, a second electrolyte layer and a second anode tube; one end of the connecting material passes through the first notch, the second notch and the third notch to be electrically connected with the first anode tube, and the other end of the connecting material is electrically connected with the second cathode layer. The battery has the advantages of stable series connection, no disconnection, good conductivity maintenance in a high-temperature reduction oxidation environment, stable battery operation and the like.)

1. A microtube type solid oxide fuel cell tandem structure is characterized by comprising:

a first microtube fuel cell tube; the first microtube type fuel cell comprises a first cathode layer (1), a first isolation layer (2), a first electrolyte layer (3) and a first anode tube (4); the first electrolyte layer (3) is coated on the outer wall of the first anode tube (4), the first isolation layer (2) is coated on the first electrolyte layer (3), the first cathode layer (1) is coated on the first isolation layer (2), a first notch is formed in the first cathode layer (1), a second notch is formed in the first isolation layer (2), a third notch is formed in the first electrolyte layer (3), and the first notch, the second notch and the third notch are communicated;

a second microtube fuel cell tube; the second microtube type fuel cell comprises a second cathode layer (7), a second isolation layer (8), a second electrolyte layer (9) and a second anode tube (10); the second electrolyte layer (9) is coated on the outer wall of the second anode tube (10), the second isolation layer (8) is coated on the second electrolyte layer (9), and the second cathode layer (7) is coated on the second isolation layer (8); and

a connecting material (6); one end of the connecting material (6) penetrates through the first notch, the second notch and the third notch to be electrically connected with the first anode tube (6), and the other end of the connecting material (6) is electrically connected with the second cathode layer (7), so that the first micro-tube type fuel cell tube and the second micro-tube type fuel cell tube are communicated in series.

2. The tandem structure of the micro-tube type solid oxide fuel cell according to claim 1, wherein the thickness of the first cathode layer (1) is 20 μm, the thickness of the first separation layer (2) is 1 μm, the thickness of the first electrolyte layer (3) is 10 μm, and the thickness of the first anode tube (4) is 500-600 μm; the thickness of the second cathode layer (7) is 20 μm, the thickness of the second separator layer (8) is 1 μm, the thickness of the second electrolyte layer (9) is 10 μm, and the thickness of the second anode tube (10) is 500-600 μm.

3. The tandem solid oxide fuel cell structure according to claim 1, wherein the first cathode layer (1) is lanthanum strontium cobalt iron, the first electrolyte layer (3) is mixed gadolinium doped ceria, the first anode tube (4) is yttria stabilized zirconia; the second cathode layer (7) is lanthanum strontium cobalt iron, the second electrolyte layer (9) is mixed gadolinium doped ceria and the second anode tube (10) is yttria stabilised zirconia.

4. Microtubular solid oxide fuel cell tandem structure according to claim 1, characterized in that the material of the connection material (6) is a mixture of Pt and Ru, NiO, CaTiO₃ Mixture of Pt and Ru, NiO, CaTiO₃ The ratio of Pt to Ru is 3:1-5:1, NiO is the mixture of Pt and Ru, CaTiO₃ In a mass ratio of 2:1:3, or a mixture of Pt and Ru, NiO, SrTiO₃The ratio of Pt to Ru is 3:1-5:1, NiO is the mixture of Pt and Ru or Rh is SrTiO₃The mass ratio of the raw materials is 2:1:3, or Rh, NiO and CaTiO₃ ，NiO: Rh: CaTiO₃The mass ratio of the materials is 2:1:3, or Rh, NiO and SrTiO₃，NiO: Rh: SrTiO₃ The mass ratio is 2:1: 3.

5. The tandem structure of the micro-tube solid oxide fuel cell according to claim 1, further comprising a sealing material (5), wherein the sealing material (5) is disposed in the first, second and third gaps and is located between the first cathode layer (1) and the connection material (6), between the first isolation layer (2) and the connection material (6) and between the first electrolyte layer (3) and the connection material (6).

6. The microtubular solid oxide fuel cell tandem method according to claim 1, characterized by comprising the steps of:

step one

A first notch is formed in a first cathode layer (1) of the first microtube type fuel cell tube, and the width of the first notch (11) is 3 mm;

step two

After the first step, a second gap is arranged on the first isolating layer (2) of the first microtube type fuel cell tube, the width of the second gap is the same as that of the first gap and is communicated with the first gap,

step three

After the second step, a third gap is formed in the first electrolyte layer (3) of the first microtube type fuel cell tube, and the width of the third gap is the same as that of the second gap and is communicated with the second gap;

step four

And thirdly, bonding the bonding material and the battery by using a bonding agent accounting for 10 percent of the mass of the connector, and then co-firing for 2-4h at the temperature of 800-1000 ℃.

7. The tandem structure of the micro-tube type solid oxide fuel cell according to claim 6, wherein the thickness of the first cathode layer (1) is 20 μm, the thickness of the first separation layer (2) is 1 μm, the thickness of the first electrolyte layer (3) is 10 μm, and the thickness of the first anode tube (4) is 500-600 μm; the thickness of the second cathode layer (7) is 20 μm, the thickness of the second separator layer (8) is 1 μm, the thickness of the second electrolyte layer (9) is 10 μm, and the thickness of the second anode tube (10) is 500-600 μm.

8. The microtubular solid oxide fuel cell tandem connection method according to claim 6, characterized in that the first cathode layer (1) is lanthanum strontium cobalt iron, the first electrolyte layer (3) is mixed gadolinium doped ceria, the first anode tube (4) is yttria stabilized zirconia; the second cathode layer (7) is lanthanum strontium cobalt iron, the second electrolyte layer (9) is mixed gadolinium doped ceria and the second anode tube (10) is yttria stabilised zirconia.

9. The micro-tube solid oxide fuel cell tandem connection method according to claim 6, characterized in that the material of the connection material (6) is a mixture of Pt and Ru, NiO, CaTiO₃ Mixture of Pt and Ru, NiO, CaTiO₃ The ratio of Pt to Ru is 3:1-5:1, NiO is the mixture of Pt and Ru, CaTiO₃ In a mass ratio of 2:1:3, or a mixture of Pt and Ru, NiO, SrTiO₃The ratio of Pt to Ru is 3:1-5:1, NiO is the mixture of Pt and Ru or Rh is SrTiO₃The mass ratio of the raw materials is 2:1:3, or Rh, NiO and CaTiO₃ ，NiO: Rh: CaTiO₃The mass ratio of the materials is 2:1:3, or Rh, NiO and SrTiO₃，NiO: Rh: SrTiO₃ The mass ratio is 2:1: 3.

10. The method of claim 6, further comprising a sealing material (5), wherein the sealing material (5) is disposed in the first, second and third gaps and located between the first cathode layer (1) and the connection material (6), between the first isolation layer (2) and the connection material (6) and between the first electrolyte layer (3) and the connection material (6).

Technical Field

The invention relates to a micro-tube type solid oxide fuel cell serial connection structure and a serial connection method.

Background

At present, solid oxide fuel cell tubes are connected in series through a lead, and the series connection method is unstable in series connection, the lead is easy to break, better conductivity cannot be kept under a high-temperature reduction oxidation environment, and the stable operation of the cell cannot be ensured.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provide a microtube type solid oxide fuel cell serial connection structure and a serial connection method, which are stable in serial connection, cannot be disconnected, can keep good conductivity in a high-temperature reduction oxidation environment, and are stable in cell operation.

In order to achieve the above object, a first aspect of the present invention is a microtube type solid oxide fuel cell serial structure, including:

a first microtube fuel cell tube; the first microtube type fuel cell comprises a first cathode layer, a first isolating layer, a first electrolyte layer and a first anode tube; the first electrolyte layer is coated on the outer wall of the first anode tube, the first isolation layer is coated on the first electrolyte layer, the first cathode layer is coated on the first isolation layer, a first notch is formed in the first cathode layer, a second notch is formed in the first isolation layer, a third notch is formed in the first electrolyte layer, and the first notch, the second notch and the third notch are communicated;

a second microtube fuel cell tube; the second microtube type fuel cell comprises a second cathode layer, a second isolating layer, a second electrolyte layer and a second anode tube; the second electrolyte layer is coated on the outer wall of the second anode tube, the second isolation layer is coated on the second electrolyte layer, and the second cathode layer is coated on the second isolation layer; and

a connecting material; one end of the connecting material passes through the first notch, the second notch and the third notch to be electrically connected with the first anode tube, and the other end of the connecting material is electrically connected with the second cathode layer, so that the first micro-tube type fuel cell tube and the second micro-tube type fuel cell tube are connected in series and communicated.

In the technical solution, the thickness of the first cathode layer is 20 μm, the thickness of the first isolation layer is 1 μm, the thickness of the first electrolyte layer is 10 μm, and the thickness of the first anode tube is 500-; the thickness of the second cathode layer is 20 μm, the thickness of the second isolating layer is 1 μm, the thickness of the second electrolyte layer is 10 μm, and the thickness of the second anode tube is 500-600 μm;

in the technical scheme, the first cathode layer is lanthanum strontium cobalt iron, the first electrolyte layer is mixed gadolinium-doped cerium oxide, and the first anode tube is yttria-stabilized zirconia; the second cathode layer is lanthanum strontium cobalt iron, the second electrolyte layer is mixed gadolinium-doped cerium oxide, and the second anode tube is yttria-stabilized zirconia.

In the technical scheme, the connecting material is a mixture of Pt and Ru, NiO or CaTiO₃ Mixture of Pt and Ru, NiO, CaTiO₃ The ratio of Pt to Ru is 3:1-5:1, NiO is the mixture of Pt and Ru, CaTiO₃ In a mass ratio of 2:1:3, or a mixture of Pt and Ru, NiO, SrTiO₃The ratio of Pt to Ru is 3:1-5:1, NiO is the mixture of Pt and Ru or Rh is SrTiO₃The mass ratio of the raw materials is 2:1:3, or Rh, NiO and CaTiO₃ ，NiO: Rh: CaTiO₃The mass ratio of the materials is 2:1:3, or Rh, NiO and SrTiO₃，NiO: Rh: SrTiO₃ The mass ratio is 2:1: 3.

In the technical scheme, the cathode structure further comprises a sealing material, wherein the sealing material is arranged in the first notch, the second notch and the third notch and is positioned between the first cathode layer and the connecting material, between the first isolating layer and the connecting material and between the first electrolyte layer and the connecting material.

The second technical scheme of the invention is realized by the method, which is a microtube type solid oxide fuel cell serial connection method and is characterized by comprising the following steps:

step one

A first notch is formed in a first cathode layer of the first microtube type fuel cell tube, and the width of the first notch is 3 mm;

step two

After the first step, a second gap is arranged on the first isolation layer of the first microtube type fuel cell tube, the width of the second gap is the same as that of the first gap and is communicated with the first gap,

step three

After the second step, a third notch is formed in the first electrolyte layer of the first microtube type fuel cell tube, and the width of the third notch is the same as that of the second notch and is communicated with the second notch;

step four

And thirdly, bonding the bonding material and the battery by using a bonding agent accounting for 10 percent of the mass of the connector, and then co-firing for 2-4h at the temperature of 800-1000 ℃.

In the technical solution, the thickness of the first cathode layer is 20 μm, the thickness of the first isolation layer is 1 μm, the thickness of the first electrolyte layer is 10 μm, and the thickness of the first anode tube is 500-; the thickness of the second cathode layer is 20 μm, the thickness of the second isolating layer is 1 μm, the thickness of the second electrolyte layer is 10 μm, and the thickness of the second anode tube is 500-600 μm;

in the technical scheme, the first cathode layer is lanthanum strontium cobalt iron, the first electrolyte layer is mixed gadolinium-doped cerium oxide, and the first anode tube is yttria-stabilized zirconia; the second cathode layer is lanthanum strontium cobalt iron, the second electrolyte layer is mixed gadolinium-doped cerium oxide, and the second anode tube is yttria-stabilized zirconia.

In the technical scheme, the connecting material is a mixture of Pt and Ru, NiO or CaTiO₃ Mixture of Pt and Ru, NiO, CaTiO₃ The ratio of Pt to Ru is 3:1-5:1, NiO is the mixture of Pt and Ru, CaTiO₃ In a mass ratio of 2:1:3, or a mixture of Pt and Ru, NiO, SrTiO₃The ratio of Pt to Ru is 3:1-5:1, NiO is the mixture of Pt and Ru or Rh is SrTiO₃The mass ratio of the raw materials is 2:1:3, or Rh, NiO and CaTiO₃ ，NiO: Rh: CaTiO₃The mass ratio of the materials is 2:1:3, or Rh, NiO and SrTiO₃，NiO: Rh: SrTiO₃ The mass ratio is 2:1: 3.

In the technical scheme, the cathode structure further comprises a sealing material, wherein the sealing material is arranged in the first notch, the second notch and the third notch and is positioned between the first cathode layer and the connecting material, between the first isolating layer and the connecting material and between the first electrolyte layer and the connecting material.

Compared with the prior art, the invention has the advantages that: the series connection is stable, the disconnection is avoided, good conductivity can be kept in a high-temperature reduction oxidation environment, and the operation of the battery is stable.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a top view of FIG. 1;

fig. 3 is an enlarged sectional view a-a of fig. 2.

Detailed Description

The following further describes embodiments of the present invention with reference to the drawings. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, the terms "top", "bottom", "left" and "right" etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention but do not require that the present invention must be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

Example one

As shown in fig. 1 to 3, a microtube solid oxide fuel cell serial structure includes:

a first microtube fuel cell tube; the first microtube type fuel cell comprises a first cathode layer 1, a first isolating layer 2, a first electrolyte layer 3 and a first anode tube 4; the first electrolyte layer 3 is coated on the outer wall of the first anode tube 4, the first isolation layer 2 is coated on the first electrolyte layer 3, the first cathode layer 1 is coated on the first isolation layer 2, a first notch is formed in the first cathode layer 1, a second notch is formed in the first isolation layer 2, a third notch is formed in the first electrolyte layer 3, and the first notch, the second notch and the third notch are communicated;

a second microtube fuel cell tube; the second microtube type fuel cell comprises a second cathode layer 7, a second isolating layer 8, a second electrolyte layer 9 and a second anode tube 10; the second electrolyte layer 9 is coated on the outer wall of the second anode tube 10, the second isolation layer 8 is coated on the second electrolyte layer 9, and the second cathode layer 7 is coated on the second isolation layer 8; and

a connecting material 6; one end of the connecting material 6 passes through the first notch, the second notch and the third notch to be electrically connected with the first anode tube 6, and the other end of the connecting material 6 is electrically connected with the second cathode layer 7, so that the first micro-tube type fuel cell tube and the second micro-tube type fuel cell tube are connected in series and communicated.

When in use, the series connection method comprises the following steps:

step one

A first notch is formed in a first cathode layer of the first microtube type fuel cell tube, and the width of the first notch is 3 mm;

step two

After the first step, a second gap is arranged on the first isolation layer of the first microtube type fuel cell tube, the width of the second gap is the same as that of the first gap and is communicated with the first gap,

step three

After the second step, a third notch is formed in the first electrolyte layer of the first microtube type fuel cell tube, and the width of the third notch is the same as that of the second notch and is communicated with the second notch;

step four

And thirdly, bonding the bonding material and the battery by using a bonding agent accounting for 10% of the mass of the connector, and then co-firing for 2 hours, 3 hours or 4 hours at the temperature of 800 ℃, 900 ℃ or 1000 ℃.

In the present technical solution, the thickness of the first cathode layer 1 is 20 μm, the thickness of the first isolation layer 2 is 1 μm, the thickness of the first electrolyte layer 3 is 10 μm, and the thickness of the first anode tube 4 is 500-600 μm; the thickness of the second cathode layer 7 is 20 μm, the thickness of the second separation layer 8 is 1 μm, the thickness of the second electrolyte layer 9 is 10 μm, and the thickness of the second anode tube 10 is 500-;

in the technical scheme, the first cathode layer 1 is lanthanum strontium cobalt iron, the first electrolyte layer 3 is mixed gadolinium-doped cerium oxide, and the first anode tube 4 is yttria-stabilized zirconia; the second cathode layer 7 is lanthanum strontium cobalt iron, the second electrolyte layer 9 is mixed gadolinium doped ceria and the second anode tube 10 is yttria stabilised zirconia.

In the technical scheme, the connecting material 6 is a mixture of Pt and Ru, NiO or CaTiO₃ Mixture of Pt and Ru, NiO, CaTiO₃ The ratio of Pt to Ru is 3:1-5:1, NiO is the mixture of Pt and Ru, CaTiO₃ In a mass ratio of 2:1:3, or a mixture of Pt and Ru, NiO, SrTiO₃The ratio of Pt to Ru is 3:1-5:1, NiO is the mixture of Pt and Ru or Rh is SrTiO₃The mass ratio of the raw materials is 2:1:3, or Rh, NiO and CaTiO₃ ，NiO: Rh: CaTiO₃The mass ratio of the materials is 2:1:3, or Rh, NiO and SrTiO₃，NiO: Rh: SrTiO₃ The mass ratio is 2:1: 3.

In the present technical solution, the cathode structure further includes a sealing material 5, where the sealing material 5 is disposed in the first, second, and third gaps and is located between the first cathode layer 1 and the connection material 6, between the first isolation layer 2 and the connection material 6, and between the first electrolyte layer 3 and the connection material 6.

Example two

As shown in fig. 1 to fig. 3, a microtube type solid oxide fuel cell tandem method is characterized by comprising the following steps:

step one

A first notch is formed in a first cathode layer 1 of a first micro-tube type fuel cell tube, and the width of the first notch 11 is 3 mm;

step two

After the first step, a second gap is arranged on the first isolating layer 2 of the first microtube type fuel cell tube, the width of the second gap is the same as that of the first gap and is communicated with the first gap,

step three

After the second step, a third gap is formed in the first electrolyte layer 3 of the first microtube type fuel cell tube, and the width of the third gap is the same as that of the second gap and is communicated with the second gap;

step four

And thirdly, bonding the bonding material and the battery by using a bonding agent accounting for 10% of the mass of the connector, and then co-firing for 2 hours, 3 hours or 4 hours at the temperature of 800 ℃, 900 ℃ or 1000 ℃.

When in use, the microtube type solid oxide fuel cell serial connection structure comprises:

a first microtube fuel cell tube; the first microtube type fuel cell comprises a first cathode layer 1, a first isolating layer 2, a first electrolyte layer 3 and a first anode tube 4; the first electrolyte layer 3 is coated on the outer wall of the first anode tube 4, the first isolation layer 2 is coated on the first electrolyte layer 3, the first cathode layer 1 is coated on the first isolation layer 2, a first notch is formed in the first cathode layer 1, a second notch is formed in the first isolation layer 2, a third notch is formed in the first electrolyte layer 3, and the first notch, the second notch and the third notch are communicated;

a second microtube fuel cell tube; the second microtube type fuel cell comprises a second cathode layer 7, a second isolating layer 8, a second electrolyte layer 9 and a second anode tube 10; the second electrolyte layer 9 is coated on the outer wall of the second anode tube 10, the second isolation layer 8 is coated on the second electrolyte layer 9, and the second cathode layer 7 is coated on the second isolation layer 8; and

a connecting material 6; one end of the connecting material 6 passes through the first notch, the second notch and the third notch to be electrically connected with the first anode tube 6, and the other end of the connecting material 6 is electrically connected with the second cathode layer 7, so that the first micro-tube type fuel cell tube and the second micro-tube type fuel cell tube are connected in series and communicated.

In the present technical solution, the thickness of the first cathode layer 1 is 20 μm, the thickness of the first isolation layer 2 is 1 μm, the thickness of the first electrolyte layer 3 is 10 μm, and the thickness of the first anode tube 4 is 500-600 μm; the thickness of the second cathode layer 7 is 20 μm, the thickness of the second separation layer 8 is 1 μm, the thickness of the second electrolyte layer 9 is 10 μm, and the thickness of the second anode tube 10 is 500-;

in the technical scheme, the first cathode layer 1 is lanthanum strontium cobalt iron, the first electrolyte layer 3 is mixed gadolinium-doped cerium oxide, and the first anode tube 4 is yttria-stabilized zirconia; the second cathode layer 7 is lanthanum strontium cobalt iron, the second electrolyte layer 9 is mixed gadolinium doped ceria and the second anode tube 10 is yttria stabilised zirconia.

In the technical scheme, the connecting material 6 is a mixture of Pt and Ru, NiO or CaTiO₃ Mixture of Pt and Ru, NiO, CaTiO₃ The ratio of Pt to Ru is 3:1-5:1, NiO is the mixture of Pt and Ru, CaTiO₃ In a mass ratio of 2:1:3, or a mixture of Pt and Ru, NiO, SrTiO₃The ratio of Pt to Ru is 3:1-5:1, NiO is the mixture of Pt and Ru or Rh is SrTiO₃The mass ratio of the raw materials is 2:1:3, or Rh, NiO and CaTiO₃ ，NiO: Rh: CaTiO₃The mass ratio of the materials is 2:1:3, or Rh, NiO and SrTiO₃，NiO: Rh: SrTiO₃ The mass ratio is 2:1: 3.

In the present technical solution, the cathode structure further includes a sealing material 5, where the sealing material 5 is disposed in the first, second, and third gaps and is located between the first cathode layer 1 and the connection material 6, between the first isolation layer 2 and the connection material 6, and between the first electrolyte layer 3 and the connection material 6.

The embodiments of the present invention are described in detail above with reference to the drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention.