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Method for producing solid oxide fuel cell anode substrate and die

A solid oxide and fuel cell technology, applied to fuel cell parts, fuel cells, battery electrodes, etc., can solve problems such as uneven distribution of slurry, separate addition of initiator, single-step ball grinding slurry, etc., to avoid Changes in rheological properties and distribution uniformity, simplified operation, and good dispersion

Inactive Publication Date: 2007-03-21
INST OF PROCESS ENG CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to aim at the disadvantages of expensive equipment, high energy consumption, and environmental pollution in the preparation of SOFC anode substrates by the current tape casting method, and the water-based coagulation molding method is mostly focused on the preparation of single-component compact bodies, and there are Initiator added separately, one-step ball milling slurry and other disadvantages, and the existing casting mold is not suitable for slurry with high viscosity, and the slurry before gelation is easy to produce uneven distribution, etc., a method for preparing solid oxide fuel cells is proposed. Water-based coagulation molding method and special mold for porous composite anode substrate

Method used

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  • Method for producing solid oxide fuel cell anode substrate and die
  • Method for producing solid oxide fuel cell anode substrate and die

Examples

Experimental program
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Effect test

Embodiment 1

[0018] Embodiment 1: put into the nylon ball mill jar 170g of agate grinding balls, the average particle diameter is 8YSZ (8mol.%Y) of 5.0 μ m 2 o3 Doped ZrO 2 ) 60.00g, methacrylamide (MAM) 13.50g, N, N-methylenebisacrylamide (MBAM) 0.67g, distilled water 36.00g, polyammonium acrylate (PAA) 1.20g; ball milling tank at 750rpm for 15h Adding the average particle diameter in the above-mentioned ball mill jar is 88.80g of nickelous oxide, PAA2.20g of 5.0 μm; With 650rpm ball milling 1h; Get ready each part of special-purpose mold shown in Fig. 2) Place the glass backing plate (1) horizontally, pour the above-mentioned slurry into the area limited by the special-shaped dividing ring (2), cover the glass cover plate (3) from top to bottom, and place the exhaust channel (4 ) to expose the part (exhaust port) of the cover plate (3), seal it with a transparent tape sealing strip (5), then heat the mold filled with slurry to 70°C and keep it for 3 hours, the slurry in the mold is comp...

Embodiment 2

[0019] Embodiment 2: put into the nylon ball mill jar 90g of agate balls, 8YSZ 27.00g, acrylamide (AM) 6.10g, MBAM 0.34g, distilled water 16.50g, polyethylene glycol (PEG) with an average particle diameter of 5.0 μm 0.27g, ammonium polyacrylate (PAA) 0.27g; Ball milling jar with 500rpm ball milling 1h, then with 800rpm ball milling 13h; In above-mentioned ball milling jar, add nickelous oxide 40.50g, PEG 0.40g, PAA0 .40g; with 420rpm ball milling for 0.5h, then with 800rpm ball milling for 1h; prepare the parts of the special mold shown in Figure 2, place the glass backing plate (1) with the plastic special-shaped dividing ring (2) horizontally, and place it on the special Pour the slurry into the area defined by the shape dividing ring (2), cover the glass cover plate (3) from top to bottom, and expose the exhaust channel (4) to the part of the cover plate (3) (exhaust port) , sealed with scotch tape sealing strip (5), then heated the mold filled with slurry to 60°C and kept ...

Embodiment 3

[0020] Embodiment 3: put into the nylon ball mill jar 76g of agate balls, 8YSZ 27.00g, AM 6.30g, MBAM0.23g, gum arabic 0.42g, deionized water 50.60g of 8.0 μ m in average particle diameter; 1100rpm ball milling 12h; In above-mentioned ball milling jar, add the nickel suboxide 40.50g that average particle size is 3.0 μ m; With 650rpm ball milling 2h; Prepare each part of special-purpose mold shown in Fig. ) of the glass backing plate (1) placed horizontally, pour the above-mentioned slurry into the area limited by the special-shaped dividing ring (2), cover the glass cover plate (3) from top to bottom, and then the The mold is heated to 50°C in a nitrogen atmosphere and kept for 2 hours, the slurry in the mold is completely gelled; the cover (3) is uncovered, and the wet gel of the substrate with a smooth surface is taken out; Between the plates, dry naturally to form a substrate xerogel with a smooth surface and a smooth surface; place the xerogel between two smooth and smooth...

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Abstract

This invention relates to a method for preparing porous anode base plates of solid oxide fuel batteries and moulds, in which, the process flow is as follows: preliminary batching, preliminary ball mill, secondary batch, secondary ball mill, injection mould, heating of gel, taking off the mould, drying, baking and sintering, which utilizes the self-initiation character of nickelous oxide and applies two steps of ball mill procedures without adding initiators or eliminating air bubbles so as to simplify the operation and reduce cost.

Description

technical field [0001] The invention belongs to the field of solid oxide fuel cells, and relates to a method and a mold for preparing a porous anode substrate of a solid oxide fuel cell. Background technique [0002] As an efficient and environmentally friendly energy conversion device, solid oxide fuel cells (SOFC) have two typical structural styles: plate type and tube type. Among them, plate-type SOFC has attracted much attention due to its simple structure, low preparation cost, and high power density. SOFCs with this structure generally have two modes of electrolyte support and anode support, among which the anode support mode is widely used because of the low internal resistance of the battery. When using the anode support method, it is necessary to prepare a defect-free porous anode support substrate. The raw material used is generally a mixed system of nickelous oxide and doped zirconia, and the method used is mostly the tape casting method invented in the 1940s. ....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/88H01M8/02H01M8/0276
CPCY02E60/50
Inventor 黄文来朱庆山谢朝晖
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI
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