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Anti-carbon deposition anode film material and method for producing the same

An anode film and carbon deposition technology, applied in battery electrodes, final product manufacturing, sustainable manufacturing/processing, etc., can solve the problems of anode carbon deposition electrode performance, many processes, and high costs, to improve electrochemical performance, improve microscopic Structure, the effect of easy large-area production

Inactive Publication Date: 2008-07-16
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 traditional Ni / YSZ (yttrium stabilized zirconia) anode material will cause carbon deposition on the anode and thus degrade the electrode performance when directly using hydrocarbon fuels. Therefore, research on new anode materials suitable for hydrocarbon fuels has become a solid oxide Difficulties in the practical application of biofuel cells
[0004] In recent years, some people have studied new anode materials with perovskite structures and used them in hydrocarbon fuels, and some progress has been made, but the anode materials of this system have low conductivity, which is not conducive to practical application
Cu / CeO was prepared by wet impregnation and low temperature firing 2 System anode materials, using hydrocarbon fuels to obtain long-term stable current output, but this method is difficult to prepare a dense electrolyte membrane supported by a large-area porous matrix, and the preparation of the anode requires multiple dipping and burning, many procedures, and high cost

Method used

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  • Anti-carbon deposition anode film material and method for producing the same

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Preparation of Large Area Carbon Deposition Resistant Cu-CeO 2 / NiO-YSZ composite anode membrane material

[0034] Take YSZ (8mol%Y 2 o 3 Stable ZrO 2 ) 25g, nickel oxide 25g, ammonium oxalate 20g, ETOH24g, MEK48g, TEA3.5g, zirconia grinding ball 180g, add in the polytetrafluoroethylene ball mill jar, ball mill 1 hour on the planetary ball mill; Add PVB10g in the above-mentioned slurry, DOP4.7g, PEG4.7g, continue ball milling for 1 hour to obtain anode support body slurry.

[0035] Vacuumize the anode support slurry for 2 minutes, cast it on a tape casting machine with a knife height of 1.7 mm, dry it at room temperature for 20 hours, and then remove the film.

[0036] Raise the temperature of the anode blank film to 600°C to debinding and remove the pore-forming agent at a heating rate of 0.5°C / min, keep it warm for 2 hours, then raise the temperature to 1400°C for sintering for 4 hours at a heating rate of 2°C / min. Prepare a porous anode support membrane.

[003...

Embodiment 2

[0040] Preparation of large-area anode-supported dense ScSZ membranes

[0041] Take 25g of YSZ, 25g of NiO, 20g of ammonium oxalate, 24g of ETOH, 48g of MEK, 3.5g of TEA, 180g of zirconia grinding balls, add them into a polytetrafluoroethylene ball mill jar, and mill them on a planetary ball mill for 1 hour; add PVB10g, DOP4. 7g, PEG4.7g, continue ball milling for 1 hour to obtain anode slurry. Take ScSZ (8mol%Sc 2 o 3 Stable ZrO 2 ) 20g, ETOH6g, MEK12g, TEA0.6g, zirconia ball 50g, add in the polytetrafluoroethylene ball mill tank, ball mill 1 hour on the planetary ball mill; Add PVB1.0g, DOP1.5g, PEG1. 5 g, and continued ball milling for 1 hour to obtain electrolyte slurry.

[0042] After evacuating the electrolyte slurry for 2 minutes, cast it on a tape casting machine with a knife height of 250 μm, and dry it at room temperature for 2 hours; vacuumize the anode slurry for 2 minutes, cast it on the electrolyte membrane with a knife height of 1.7 mm, and dry it at room te...

Embodiment 3

[0047] Preparation of Cu-CeO 2 / NiO-YSZ / ScSZ / Pr 0.7 Ca 0.3 MnO 3 (PCM) planar SOFC cell

[0048] According to the method of Case 2, a large-area anode-supported dense ScSZ membrane was prepared, and a disc with a diameter of 3 cm was cut.

[0049]Take 0.5g of PCM and 0.35g of the above-mentioned terpineol solution, grind them fully in an agate mortar, screen-print the obtained slurry on the electrolyte membrane side of the composite membrane, and then sinter at 1200°C for 3 hours to finally obtain Cu- CeO 2 / NiO-YSZ / ScSZ / PCM planar SOFC cell.

[0050] Battery Power Generation Experiment

[0051] Platinum grids are coated on the anode side of the single cell to collect current, and Pt wires are drawn at the two poles to collect electricity and sealed with glass rings.

[0052] After reducing CuO and NiO in the anode at 800 °C, hydrogen and ethanol were used as fuels to conduct power generation experiments. The results show that the single cell has good performance. 2 an...

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Abstract

The invention relates to a carbon deposit resistant anode membrane material and a preparation method thereof, belonging to the flat-plate solid oxide fuel cell (SOFC) field. The preparation method is based on casting means; firstly, zirconia and nickel oxide slurries of organic pore-forming materials are added by means of casting, and membrane material of a large anode supporting body is obtained after sintering; secondly, cupric oxide dust and cerium oxide dust are uniformly mixed; thirdly, after preparation of the slurries, silk-screen printing on the surface of the anode supporting body is performed; fourthly, a catalysis layer is sintered under high temperature, and the carbon deposit resistant anode membrane material is obtained. The method is simple in technology and low in cost and is suitable for industrialized production, and the prepared anode membrane material has good carbon deposit resistance.

Description

technical field [0001] The invention relates to an anti-carbon deposition anode film material and a preparation method thereof, belonging to the field of flat-plate solid oxide fuel cells (SOFC). Background technique [0002] As a clean and efficient green energy, Solid Oxide Fuel Cell (SOFC), with its all-solid components, has no corrosion, no leakage, high temperature operation, strong fuel applicability, and is convenient for combined heat and power (efficiency can be as high as 70-80%) And other advantages, it has aroused widespread attention from all over the world, and has become the focus and hot spot in the field of new energy research today. Compared with solid oxide fuel cells with other structures, the planar solid oxide fuel cell has high energy density and small internal resistance loss; the battery pack structure is flexible and there are many gas circulation modes; the components are prepared separately, the process is simple, diverse, and the quality is easy ...

Claims

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Application Information

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IPC IPC(8): H01M4/86H01M4/88H01M8/02H01M8/10H01M8/1213H01M8/1226
CPCY02E60/521Y02E60/50Y02P70/50
Inventor 叶晓峰王绍荣王振荣钱继勤曹佳弟温廷琏
Owner SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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