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Method for preparing large-size flat plate type metal supporting solid oxide fuel cell

A solid oxide and metal-supported technology, applied in solid electrolyte fuel cells, fuel cell parts, fuel cells, etc., can solve problems such as shrinkage ratio matching, limited mass production efficiency, long time preparation and drying, etc. Achieve the effect of avoiding electrolyte cracking, good consistency and easy control

Active Publication Date: 2014-11-05
SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the pre-fabrication of the porous stainless steel substrate requires a certain cost. Moreover, since the substrate has been sintered in advance, when it is sintered together with functional layers such as anodes and electrolytes, it is difficult to solve the problem of shrinkage matching. bring some difficulty
Furthermore, the process of sequentially depositing the anode, electrolyte and reaction barrier layer is bound to take a long time in the preparation and drying of each layer, which limits the efficiency of mass production.

Method used

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  • Method for preparing large-size flat plate type metal supporting solid oxide fuel cell
  • Method for preparing large-size flat plate type metal supporting solid oxide fuel cell
  • Method for preparing large-size flat plate type metal supporting solid oxide fuel cell

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] In the 50g 430 stainless steel powder, add solvent dehydrated alcohol 7g, butanone 3.5g successively, dispersant triethanolamine 6g, plasticizer dibutyl phthalate 3g, binding agent polyvinyl butyral 5g, make Pore ​​agent ammonium oxalate 20g; add solvent xylene, butyl acetate 3g each, dispersant DM-55 2g, plasticizer B-50 1g, binder B-722g; Add solvent xylene, butyl acetate 4g each, dispersant BYK 2g, plasticizer B-50 2g, binder B-72 3g to 30g electrolyte YSZ powder in sequence;

[0051] Ball mill the above three slurries respectively, and sieve the mixed slurries through sieves and vacuum treatment to remove the air in the slurries;

[0052] The above three kinds of slurries are tape-cast respectively, and after drying, the green bodies of the metal support layer, the anode layer and the electrolyte layer are obtained, and each green body is cut into green bodies meeting the size requirements;

[0053] The metal support layer, the anode layer, and the electrolyte laye...

Embodiment 2

[0056] Add 15g of solvent anhydrous ethanol, 15g of butanone, 15g of dispersant BYK, 8g of plasticizer dibutyl phthalate, 8g of polyethylene glycol, and binder polyvinyl butyrate to 50g of 430 stainless steel powder. Aldehyde 15g, pore forming agent ammonium carbonate 60g; add solvent xylene, butyl acetate 7.5g each, dispersant DM-55 2.5g, plasticizer B- 50 2.5g, binder B-72 2.5g; add solvent xylene, butyl acetate 5g each, dispersant BYK 2.5g, plasticizer B-50 5g, binder B to 30g electrolyte YSZ powder -72 7.5g;

[0057] Ball mill the above three slurries respectively, and sieve the mixed slurries through sieves and vacuum treatment to remove the air in the slurries;

[0058] The above three kinds of slurries are tape-cast respectively, and after drying, the green bodies of the metal support layer, the anode layer and the electrolyte layer are obtained, and each green body is cut into green bodies meeting the size requirements;

[0059] The metal support layer, the anode lay...

Embodiment 3

[0064] Add 7g of solvent absolute ethanol, 3.5g of methyl ethyl ketone, 5g of dispersant triethanolamine, 1g of BYK, 3g of plasticizer dibutyl phthalate, and 5g of binder polyvinyl butyral to 50g of 430 stainless steel powder. , pore-forming agent ammonium oxalate 20g; add solvent xylene, butyl acetate 3g each, dispersant DM-552g, plasticizer B-50 1g to the anode powder (NiO, YSZ powder 10g each), sequentially add 2g of agent B-72; add 4g of solvent xylene and butyl acetate, 2g of dispersant DM-55, 2g of plasticizer B-50, and 3g of binder B-72 into 30g of electrolyte YSZ powder;

[0065] Ball mill the above three slurries respectively, and sieve the mixed slurries through sieves and vacuum treatment to remove the air in the slurries;

[0066] The above three kinds of slurries are tape-cast respectively, and after drying, the green bodies of the metal support layer, the anode layer and the electrolyte layer are obtained, and each green body is cut into green bodies meeting the ...

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Abstract

The invention discloses a method for preparing a large-size flat plate type metal supporting solid oxide fuel cell. The method comprises the following steps of respectively preparing a metal supporting layer, an anode layer and an electrolyte layer biscuit, and then sequentially stacking from bottom to top for hot pressing; carrying out high-temperature co-sintering to obtain a half cell; and depositing cathode slurry on the half cell with a screen printing or spraying method, and finally sintering a cathode in air of 700-800 DEG C or carrying out in-situ sintering on the cathode. The method has strong operability and is low in cost, the stable flat plate type metal supporting solid oxide fuel cell with a large size and high electrical performance can be obtained, and the method is convenient for continuous mass production. The layers of the prepared SOFC (Solid Oxide Fuel Cell) are tightly combined, the thickness, the porosity and the like of functional layers can be controlled, and the method has a good application prospect.

Description

technical field [0001] The invention relates to a method for preparing a large-size flat metal-supported solid oxide fuel cell, which belongs to the technical field of solid fuel cells. Background technique [0002] Solid Oxide Fuel Cell (SOFC) is an electrochemical device that directly converts the chemical energy of hydrogen, natural gas and biomass gas into electrical energy. Features, can be widely used in large-scale power plants, distributed power plants, automotive auxiliary power supply, household combined heat and power systems, etc. Although SOFC has many excellent properties, it has not yet been applied on a large scale, and its main constraints are cost and lifetime issues. Compared with the traditional electrolyte support or electrode support structure, the new metal support structure can improve the mechanical strength of the single cell, increase the thermal shock resistance of the battery, reduce the cost of the SOFC system, and help solve the problem of sta...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M8/10H01M8/02H01M8/0206H01M8/1226
CPCY02E60/521Y02E60/50Y02P70/50
Inventor 周玉存王绍荣占忠亮袁春刘雪娇孟燮吴昊
Owner SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI