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Single preparation method of solid oxide fuel cell

A solid oxide and fuel cell technology, applied in fuel cells, circuits, electrical components, etc., can solve the problems of complex SOFC preparation steps, high manufacturing cost, time-consuming, etc., achieve uniform force, reduce production costs, and reduce preparation The effect of the process step

Inactive Publication Date: 2017-09-22
HARBIN INST OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a simple solid oxide fuel cell preparation method by using one-step co-sintering technology in order to overcome the problems of complicated SOFC preparation steps, time-consuming and energy-consuming, and high manufacturing costs in the prior art

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  • Single preparation method of solid oxide fuel cell
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  • Single preparation method of solid oxide fuel cell

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specific Embodiment approach 1

[0024] Specific Embodiment 1: This embodiment describes a simple solid oxide fuel cell preparation method, the method is as follows figure 1 As shown, it specifically includes the following steps:

[0025] Step 1: cast SSZ electrolyte layer;

[0026] Step 2: cast an anode functional layer and an anode support layer on the SSZ electrolyte layer in step 1 to form a green body A;

[0027] Step 3: cast a cathode functional layer, and cast a cathode support layer on the cathode functional layer to form a green body B;

[0028] Step 4: superimpose the SSZ electrolyte layer of green body A and the cathode functional layer of green body B, and obtain a complete full battery green body by lamination;

[0029] Step 5: Put the full cell blank obtained in Step 4 into a high-temperature furnace for sintering.

specific Embodiment approach 2

[0030] Embodiment 2: A simple solid oxide fuel cell preparation method described in Embodiment 1, the fuel cell is sequentially made of an anode support layer, an anode functional layer, an electrolyte layer, a cathode functional layer and a cathode support layer. Integral structure, the obtained solid oxide fuel cell cross-sectional scanning electron microscope picture and its enlarged picture are as follows: figure 2 , 3 shown; where:

[0031] The anode support layer is composed of NiO phase and SSZ phase, and the thickness of the anode support layer is 500-700 μm;

[0032] The anode functional layer is composed of NiO phase and SSZ phase, and the thickness of the anode functional layer is 20-35 μm;

[0033] The electrolyte layer is composed of SSZ phase, and the thickness of the electrolyte layer is 10-20 μm;

[0034] The cathode functional layer is composed of LSM phase and SSZ phase, and the thickness of the cathode functional layer is 20-35 μm;

[0035] The cathode ...

specific Embodiment approach 3

[0037] Specific embodiment three: the simple solid oxide fuel cell preparation method described in specific embodiment one or two, in step one, the casting method of the SSZ electrolyte layer is as follows:

[0038] Dissolve 0.2~1.0mL dispersant triethanolamine in a mixed solvent of 80~120mL ethanol and 50~150mL butanone, add 80~120g SSZ powder, first ball mill for 12~24 hours, then add 0.5~2.0g poly Vinyl butyral plasticizer, 0.5~2.0g polyethylene glycol and 0.5~2.0g polymethyl methacrylate toughening agent, continue ball milling for 12~24 hours, take out the slurry, vacuum defoaming, remove the air inside , cast SSZ electrolyte layer, the purity of raw materials and reagents involved are analytically pure. The scanning electron microscope image of the electrolyte surface of the simple solid oxide fuel cell is as follows Figure 4 shown.

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Abstract

The invention relates to a single preparation method of a solid oxide fuel cell, and belongs to the field of a fuel cell. The method comprises the following steps of (1) casting an SSZ electrolyte layer; (2) casting a positive electrode functional layer and a positive electrode support layer on the SSZ electrolyte layer in the step (1) to form a biscuit A; (3) casting a negative electrode functional layer, and casting a negative electrode support layer on the negative electrode functional layer to form a biscuit B; (4) laminating the SSZ electrolyte layer surface of the biscuit A and a negative electrode functional layer surface of the biscuit B, and obtaining a complete all-battery biscuit by lamination; and (5) placing the all-battery biscuit obtained in the step (4) in a high-temperature furnace for sintering. The method has the advantages that uniform stress of the biscuit can be ensured by a lamination technology, so that the interface stress is reduced, and a crack and layering are eliminated; the biscuit A and the biscuit B are jointly laminated to form the all-battery biscuit by lamination, the all-battery is prepared by a one-step co-sintering technology, the step of a solid oxide full cell (SOFC) preparation process can be reduced, the production cost is reduced, and the time is saved.

Description

technical field [0001] The invention belongs to the field of fuel cells, and in particular relates to a simple method for preparing a solid oxide fuel cell. Background technique [0002] A fuel cell is a power generation device that can convert internal chemical energy into electrical energy. It is an innovative idea in addition to thermal power generation, hydropower generation and solar power generation. Among many types of fuel cells, solid oxide fuel cells (Solid Oxide Fuel Cell, SOFC) have obvious advantages. It does not have high requirements for fuel, and hydrogen, coal gas and various hydrocarbon compounds can be used as fuel. . The anode, electrolyte, and cathode of the entire battery are all solid, and there is no need for leak-proof and anti-corrosion operations like other types of batteries. In addition, it converts energy efficiently, saving fuel. At present, the development of SOFC has become an international research hotspot. [0003] The preparation of fu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/1213H01M8/1253
CPCH01M8/1213H01M8/1253H01M2008/1293Y02E60/50Y02P70/50
Inventor 孙克宁乐士儒宋雪芹秦龙靳超朱晓东张乃庆
Owner HARBIN INST OF TECH
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