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Method for preparing metallic support type solid oxide fuel cell

A solid oxide, fuel cell technology, applied in solid electrolyte fuel cells, final product manufacturing, sustainable manufacturing/processing, etc., can solve the problems of complex process, high equipment requirements, cracking of the electrolyte layer, etc., to achieve simple preparation process, Simple equipment, wide-ranging effects

Inactive Publication Date: 2009-10-21
中博源仪征新能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to the molding method of the electrolyte, the preparation of metal-supported solid oxide fuel cells is mainly divided into two categories: one is the preparation method of low-temperature molding, such as pulsed laser deposition, chemical vapor deposition, suspension plasma spraying, etc., and the prepared electrolyte is relatively dense, and the sintering temperature is low, which can effectively inhibit the oxidation of metals, but such methods require high equipment and complicated processes, resulting in high preparation costs; see Shiqiang Hui, Dongfang Yang, Zhenwei Wang, et al."Metal- supported solid oxide fuel cell operated at 400-600℃" (Journal of Power Sources, 2007, 167: 336-339)
The other is the method of high-temperature co-firing in a reducing atmosphere. Although the high-temperature co-firing in a reducing atmosphere can simplify the molding process and use the wet ceramic molding process to prepare electrolytes to reduce production costs, but in a reducing atmosphere High-temperature co-firing can easily cause interdiffusion of metal elements between the metal support and the anode functional layer, thereby reducing battery performance; The performance of the battery is greatly reduced, and the diffusion of metal elements in the anode layer such as Ni into the Fe-Cr support will cause changes in the thermal expansion coefficient of the support, resulting in cracking of the electrolyte layer; see Michael C.Tucker, Grace Y.Lau, C P. Jacobson. "Performance of metal-supported SOFCs with infiltrated electrodes" (Journal of power sources, 2007, 171: 477-482)

Method used

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  • Method for preparing metallic support type solid oxide fuel cell
  • Method for preparing metallic support type solid oxide fuel cell
  • Method for preparing metallic support type solid oxide fuel cell

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Embodiment 1: comprise the steps:

[0033] (1) Preparation of casting slurry step: according to weight ratio: nickel oxide 230g, pore-forming agent carbon powder 15g, binder polyvinyl butyral (PVB) 25g, plasticizer butyl benzyl phthalate ( BBP) / polyalkylene glycol (PAG) (weight ratio, 1:1) 25g, dispersant fish oil 4g, organic solvent xylene / dehydrated alcohol (weight ratio, 1:1) 104g, nickel oxide, pore-forming Agent, binding agent, plasticizer and dispersant are dissolved in the organic solvent, add 7 drops of defoaming agent cyclohexanone, ball mill to make casting slurry;

[0034] (2) Tape casting step: tape cast the obtained tape casting slurry, and obtain a nickel oxide green body with a thickness of about 1 mm after natural drying; the nickel oxide green body is cut into a nickel oxide support body green body with a diameter of 26 mm ;

[0035] (3) Preparation of half-cell step: use screen printing process to sequentially print NiO-YSZ anode functional layer and...

Embodiment 2

[0042] Embodiment 2: comprise the steps:

[0043] (1) Preparation of casting slurry step: according to weight ratio: nickel oxide 200g, pore-forming agent carbon powder 10g, binder polyvinyl butyral (PVB) 22g, plasticizer butyl benzyl phthalate ( BBP) / polyalkylene glycol (PAG) (weight ratio, 1:1) 22g, dispersant fish oil 3g, organic solvent xylene / dehydrated alcohol (weight ratio, 1:1) 96g, nickel oxide, pore-forming Dissolve the agent, binder, plasticizer and dispersant in the organic solvent, add 4 drops of defoaming agent cyclohexanone, and ball mill to make casting slurry;

[0044] (2) Tape casting step: tape cast the obtained tape casting slurry, and obtain a nickel oxide green body with a thickness of about 1 mm after natural drying; the nickel oxide green body is cut into a nickel oxide support body green body with a diameter of 26 mm ;

[0045] (3) Preparation of half-cell step: use screen printing process to print anode functional layer NiO-YSZ and YSZ electrolyte l...

Embodiment 3

[0050] Embodiment 3: comprise the steps:

[0051] (1) Preparation of cast slurry step: according to weight ratio: nickel oxide 200g, pore-forming agent starch 10g, binder methyl cellulose 22g, plasticizer propylene glycol adipate polyester / polyalkylene glycol (PAG ) (weight ratio, 1: 1) 22g, dispersant tristearin 3g, organic solvent styrene / dehydrated alcohol (weight ratio, 1: 1) 96g, nickel oxide, pore forming agent, binding agent , Dissolve plasticizer and dispersant in organic solvent, add 6 drops of defoaming agent cyclohexanone, and ball mill to make casting slurry;

[0052] (2) Tape casting step: tape cast the obtained tape casting slurry, and obtain a nickel oxide green body with a thickness of about 1 mm after natural drying; the nickel oxide green body is cut into a nickel oxide support body green body with a diameter of 26 mm ;

[0053] (3) Preparation of half-cell step: use screen printing process to sequentially print NiO-YSZ anode functional layer and YSZ electr...

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Abstract

The invention provides a method for preparing a metallic support type solid oxide fuel cell, and belongs to a method for preparing a solid oxide fuel cell (SOFC). The invention aims to simplify process, lower cost and prepare the fuel cell with excellent electric property. The method comprises the following steps: (1) a tape casting slurry preparation step; (2) a tape casting formation step; (3) a half cell preparation step; (4) a high-temperature sintering step; (5) a monocell preparation step; and (6) a reducing step. The method has the advantages of wide raw material source, simple preparation process and low cost; and the open-circuit voltage of the prepared SOFC, which is measured at a temperature of 750 DEG C, is 1.01V, the maximum power density is 0.64w / cm, so that the SOFC can be applied to the preparation of the large-area metallic support type solid oxide fuel cell.

Description

technical field [0001] The invention belongs to a preparation method of a solid oxide fuel cell (SOFC), in particular to a preparation method of a metal-supported solid oxide fuel cell. Background technique [0002] According to different types of supports, traditional solid oxide fuel cells (SOFCs) can be divided into electrolyte-supported solid oxide fuel cells, anode-supported solid oxide fuel cells, and cathode-supported solid oxide fuel cells. In various types of supported solid oxide fuel cells, the support material belongs to ceramic material or metal-ceramic composite material. Because ceramic materials are not easy to process, and have poor thermal shock resistance and weldability, it is more difficult for the single cell to be assembled in the stack, and it is easy to break. [0003] The development of electrolyte thin film and low-temperature new electrolyte materials has effectively reduced the operating temperature of solid oxide fuel cells (600-800 ° C), there...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/10
CPCY02E60/522Y02E60/50Y02P70/50
Inventor 李箭孔永红华斌蒲健颜冬池波
Owner 中博源仪征新能源科技有限公司
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