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Method for preparing cathode-supported tubular solid oxide fuel cells

A solid oxide and cathode support technology, applied in solid electrolyte fuel cells, fuel cells, circuits, etc., to achieve the effects of tight combination, high catalytic activity, and avoidance of reactions

Active Publication Date: 2009-11-11
江苏先进无机材料研究院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, it is possible to make a cathode support with a large shrinkage to achieve co-sintering of the cathode and electrolyte.

Method used

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  • Method for preparing cathode-supported tubular solid oxide fuel cells
  • Method for preparing cathode-supported tubular solid oxide fuel cells
  • Method for preparing cathode-supported tubular solid oxide fuel cells

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Dip molding LSM-YSZ / SSZ / NiO-SSZ tubular SOFC

[0028] where LSM((La 0.8 Sr 0.2 ) 0.95 MnO 3 )-YSZ (8mol%Y 2 o 3 Stable ZrO 2 ) as the cathode layer, SSZ (10mol%Sc 2 o 3 Stable ZrO 2) as the electrolyte layer and NiO-YSZ as the anode layer. Weigh 70g of LSM, 30g of YSZ, 40g of graphite as a pore-forming agent, 6g of triethanolamine (TFA) as a dispersant, 73g of butanone and 37g of ethanol as a solvent, and 200g of zirconia balls as a ball milling medium, mix and mill on a planetary ball mill for 1 hour . Add 12 g of PVB (polyvinyl butyral) as a binder, 10 g of PEG (polyvinyl alcohol) and 10 g of DOP (dibutyl phthalate) as a plasticizer in the resulting slurry, and continue ball milling for 2 hours to obtain a cathode Slurry: Weigh 20g of SSZ, 0.6g of TEA, 50g of butanone, 30g of ethanol, and 100g of zirconia balls, mix them and mill them on a planetary ball mill for 1h, and add 0.8g of PVB, 0.8g of PEG, and 0.8g of DOP to the obtained slurry , continue ball m...

Embodiment 2

[0031] Dip molding LSM / LSM-YSZ / YSZ / LSCM-YSZ tubular SOFC

[0032] where LSM (La 0.8 Sr 0.2 MnO 3 ) as the cathode support layer, LSM-YSZ (8mol% Y 2 o 3 Stable ZrO 2 ) as the cathode active layer, YSZ as the electrolyte layer, LSCM (La 0.8 Sr 0.2 Cr 0.5 mn 0.5 o 3 )-YSZ as the anode layer. Weigh 100g of LSM, 30g of graphite as a pore-forming agent, 5g of TEA as a dispersant, 60g of methyl ethyl ketone and 30g of ethanol as a solvent, 150g of zirconia balls as a ball milling medium, mill on a planetary ball mill for 1 hour, and then add 10g of PVB as a binder , 8gPEG and 8g DOP as plasticizer, continue ball milling for 2h to obtain cathode support layer slurry; weigh 30gLSM, 20g YSZ, 10g graphite as pore-forming agent, 2g TEA as dispersant, 35g methyl ethyl ketone and 20g ethanol as solvent, 100g of zirconia balls were used as ball milling medium, milled on a planetary ball mill for 1 hour, then 4g of PVB was added as binder, 3.5g of PEG and 3.5g of DOP were used as p...

Embodiment 3

[0034] Dip molding LSCF / LSCF-GDC / GDC / LST-GDC tubular SOFC

[0035] where LSCF(La 0.8 Sr 0.2 co 0.2 Fe 0.8 o 3 ) as the cathode support layer, LSCF-GDC (Gd 0.2 Ce 0.8 o 2 ) as the cathode active layer, GDC as the electrolyte layer, LST (La 0.4 Sr 0.6 TiO 3 )-GDC as the anode layer. Weigh 100g LSCF, 10g starch as a pore-forming agent, 3g TEA as a dispersant, 50g acetone and 30g ethanol as a solvent, 150g of zirconia balls as a ball milling medium, ball mill 1h on a planetary ball mill, then add 8g PVB as a binder, 7g PEG and 7g DOP were used as plasticizers, and ball milling was continued for 2h to obtain cathode support layer slurry; 30g LSCF, 20g GDC, 5g starch were used as pore-forming agents, 2g TEA was used as dispersant, 35g acetone and 20g ethanol were used as solvents, 100g of zirconia balls were used as the ball milling medium, milled on a planetary ball mill for 1 hour, then 4g of PVB was added as a binder, 3.5g of PEG and 3.5g of DOP were used as a plastici...

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Abstract

The invention relates to a method for preparing cathode-supported tubular solid oxide fuel cells (CTS OFCs), which is characterized in that: adding an organic solvent, a dispersant, an adhesive, a pore-forming material and a plasticizer into powder of various functional layers (cathodes, anodes and electrolyte) to prepare slurry of the various functional layers; soaking a cathode supporting body, the electrolyte and an anode layer on a tubular substrate in turn, and obtaining the CTS OFCs after demolding and primary sintering; or soaking the cathode and the electrolyte, performing demolding and preburning, soaking the anode layer on the outside of the electrolyte, and obtaining the CTS OFCs through co-sintering. The method has simple technological process and low manufacturing cost, and can realize the densification of the electrolyte at a low temperature of between 1,200 and 1,300 DEG C, and the obtained cells have superior performance and good industrialization prospect.

Description

technical field [0001] The invention belongs to the technical field of solid oxide fuel cell manufacturing, in particular to a preparation method of a cathode support tube type solid oxide fuel cell. Background technique [0002] Solid oxide fuel cell (SOFC) is an electrochemical device that directly converts chemical energy in fuel into electrical energy. It has the characteristics of high efficiency, low pollution, and no noise. It can provide high quality power supply. The successful application of this technology is of great significance to alleviating the energy crisis, meeting the demand for power quantity and quality, protecting the ecological environment and national security. [0003] Currently, the two most important structural types of SOFC are tube type and flat plate type. The main feature of tubular SOFC is that it does not involve the technical problem of high-temperature sealing, and the tubular structure has strong stress resistance characteristics and is ...

Claims

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Application Information

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IPC IPC(8): H01M8/10H01M8/1062
CPCY02E60/521Y02E60/50Y02P70/50
Inventor 赵春花王绍荣刘仁柱王振荣钱继勤聂怀文
Owner 江苏先进无机材料研究院
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