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Solid oxide fuel cell and preparation method thereof

A solid oxide and fuel cell technology, applied in fuel cells, battery electrodes, circuits, etc., can solve the problems of low sealing difficulty, high current collection difficulty, small current collection area, etc., and achieve low sealing difficulty, long durability, The effect of simplifying the preparation process

Active Publication Date: 2021-06-11
浙江氢邦科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since there are extremely airtight electrolytes on both sides of the anode, the sealing requirement of this type of battery is only the small plane where the fuel gas channel is located, so the sealing difficulty is low, but the corresponding current collecting area is small, and the current collection is difficult. Need to improve to meet the needs

Method used

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  • Solid oxide fuel cell and preparation method thereof
  • Solid oxide fuel cell and preparation method thereof
  • Solid oxide fuel cell and preparation method thereof

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preparation example Construction

[0036] And a method for preparing a simplified solid oxide fuel cell with reduced cost and time consumption is provided, comprising the following steps:

[0037] Coating powder slurry on one side of the anode flat tube support body containing the air channel to form the anode current collecting structure layer;

[0038] Coating electrolyte slurry on the opposite side of the anode flat tube support body containing air passages to form an electrolyte layer, and sintering at high temperature;

[0039] The cathode is coated on the electrolyte layer of the sintered anode flat tube support body, and sintered at high temperature to obtain a flat tube single-cathode battery with an anode current collecting structure.

[0040] It is mostly carried out by coating and sintering, and the process is simple.

[0041] For the anode flat tube support with air channels, its material can be Ni, NiO or other Ni alloys, or mixed with GDC and YSZ, where GDC: gadolinia-doped cerium oxide, YSZ: ytt...

Embodiment 1

[0052] 1. Using NiO-YSZ composite powder as raw material, the flat tube body is obtained by extrusion molding;

[0053] 2. After calcining the green body at 1000°C to remove the glue, obtain the anode flat tube support body;

[0054] 3. Coating NiO slurry on the A side of the anode flat tube support by screen printing, with a thickness of 15 μm;

[0055] 4. After air drying, apply YSZ electrolyte slurry grid, the thickness is 8 μm, the grid size is 8*4mm and 4*4mm, and the 4*4mm grid is in the center;

[0056] 5. Dry the anode current collecting structure in step 4, and print the NiO-YSZ active anode slurry on the B side of the flat tube support, with a thickness of 20 μm;

[0057] 6. After drying at 60°C, print YSZ electrolyte slurry on the active anode layer on the B side, with a thickness of 6 μm;

[0058] 7. Sinter at 1300°C for 4 hours to obtain a YSZ half-cell;

[0059] 8. Coat the GDC barrier layer on the B side of the YSZ half-cell with a thickness of 2 μm, and sint...

Embodiment 2

[0062] 1. Using NiO-YSZ composite powder as raw material, the flat tube body is obtained by isostatic pressing;

[0063] 2. After calcining the green body at 800°C to remove the glue, obtain the anode flat tube support body;

[0064] 3. Coating NiO slurry containing 20wt% YSZ on the A side of the flat tube support by screen printing, with a thickness of 12 μm;

[0065] 4. Dry the anode current collecting structure in step 3, and print the NiO-YSZ active anode slurry on the B side of the flat tube support, with a thickness of 15 μm;

[0066] 5. After drying at 60°C, print YSZ electrolyte slurry on the active anode layer on the B side, with a thickness of 10 μm;

[0067] 6. Sinter at 1300°C for 4 hours to obtain a YSZ half-cell;

[0068] 7. Coat the GDC barrier layer on the B side of the YSZ half-cell with a thickness of 1.5 μm and sinter at 1300°C for 4 hours to obtain a GDC half-cell

[0069] 8. Coat the cathode on the B side of the GDC half-cell, with a thickness of 25 μm,...

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Abstract

The invention discloses a solid oxide fuel cell. One surface of an anode flat tube support body containing an air passage is an anode current collecting structure layer, and the other opposite surface of the anode flat tube support body is sequentially provided with an electrolyte layer and a cathode layer to form a single-cathode flat tube cell, and the solid oxide fuel cell has a configuration of a cathode / electrolyte / anode containing the air passage / anode current collecting structure. The inventor puts forward a new-configuration solid fuel cell through long-term research, and through detection, the new-configuration solid fuel cell has the advantages that the strength is higher than that of a traditional thin-plate-type cell, sintering warping is avoided, the power density is higher than that of a tubular cell, the current collecting area is far larger than that of a symmetrical double-cathode-type hollow flat tube cell, the sealing difficulty is low and the solid fuel cell has advantages of high pile integration applicability, relatively long durability and like. The invention also discloses a preparation method of the solid oxide fuel cell, the process is simplified, and the cost and time consumption are reduced.

Description

technical field [0001] The invention relates to the technical field of batteries, in particular to a solid oxide fuel cell and a preparation method. Background technique [0002] According to the structure, SOFC can be divided into two categories: planar and tubular batteries, and planar batteries can be further divided into thin-plate batteries and flat tubular batteries. The thin-plate battery structure has disadvantages such as low mechanical strength, poor resistance to external environmental forces and temperature fluctuations. In contrast, the flat-tube battery designs the fuel gas channel in the middle of the anode while retaining the high power density characteristics of the thin-plate battery. , so that the thickness of the battery increases, the fuel gas ventilation area decreases, the mechanical strength of the battery is significantly increased, and the difficulty of sealing is also significantly reduced. [0003] In this regard, many studies have been carried o...

Claims

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Application Information

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IPC IPC(8): H01M4/86H01M4/88H01M8/1246
CPCH01M4/8626H01M4/8657H01M4/8828H01M4/8885H01M8/1246H01M2008/1293Y02P70/50Y02E60/50
Inventor 常晓辉曹宝华王建新官万兵杨钧
Owner 浙江氢邦科技有限公司
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