Preparation method for asymmetric hollow fiber type solid oxide fuel cell

A solid oxide and fuel cell technology, applied in solid electrolyte fuel cells, fuel cells, battery electrodes, etc., to achieve good compactness, fast gas transmission, and low cost

Inactive Publication Date: 2012-01-25
SOUTH CHINA UNIV OF TECH
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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 overcome the deficiencies in the application of the existing tubular SOFC, and provide an asymmetric hollow fiber solid oxide fuel cell with low cost, simple process and high volumetric power density

Method used

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  • Preparation method for asymmetric hollow fiber type solid oxide fuel cell
  • Preparation method for asymmetric hollow fiber type solid oxide fuel cell
  • Preparation method for asymmetric hollow fiber type solid oxide fuel cell

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] (1) Dissolve 0.6g polyvinylpyrrolidone in 16g N -Add 4g of polyethersulfone to methylpyrrolidone, stir until dissolved, add 15g of nickel oxide (chemical formula: NiO) and 15g of yttrium-stabilized zirconia (abbreviation: YSZ), stir at 400rpm for 12h to disperse the powder evenly, and get a mixture Uniform textile liquid; to figure 1 Injected into the inner ring of the spinneret of the textile equipment shown N -Methylpyrrolidone, inject deionized water into the water tank, inject the textile liquid into the reaction tank of the textile equipment, and vacuumize it for 1 hour to remove the air bubbles. 2 Driven, the spinning solution is formed through a spinneret with an outer diameter of 1.5 mm and an inner diameter of 1 mm and enters the water tank, and placed in deionized water for 48 hours to obtain a tubular asymmetric hollow fiber SOFC anode green body;

[0040] (2) Cut the asymmetric hollow fiber SOFC anode green body obtained in step (1) into 8 cm, hang it in t...

Embodiment 2

[0052] (1) Dissolve 0.6g polyvinylpyrrolidone in 12g N -Add 3.6g polyethersulfone to methylpyrrolidone, stir until dissolved, add 12.96g nickel oxide (chemical formula: NiO) and 19.44g gadolinium-doped cerium oxide (abbreviation: GDC), stir at 400rpm for 10h to make the powder uniform Disperse to obtain a uniformly mixed textile liquid; figure 1 Injected into the inner ring of the spinneret of the textile equipment shown N -Methylpyrrolidone, inject deionized water into the water tank, inject the textile liquid into the reaction tank of the textile equipment, and vacuumize it for 0.5h to remove the air bubbles, then in the N with a pressure of 80kPa 2 Driven, the spinning liquid is formed through a spinneret with an outer diameter of 1.5 mm and an inner diameter of 1 mm and enters the water tank, and placed in deionized water for 24 hours to obtain a tubular asymmetric hollow fiber SOFC anode green body;

[0053] (2) Cut the asymmetric hollow fiber SOFC anode green body obta...

Embodiment 3

[0058] (1) Dissolve 0.6g polyvinylpyrrolidone in 30g N -Add 12g of polyethersulfone to methylpyrrolidone, stir until dissolved, add 9.6g of nickel oxide (chemical formula: NiO) and 6.4g of lanthanum-gallium-based perovskite oxide (abbreviation: LSGM), stir at 400rpm for 20h, and make the powder The body is evenly dispersed to obtain a uniformly mixed textile liquid; figure 1 Injected into the inner ring of the spinneret of the textile equipment shown N -Methylpyrrolidone, inject deionized water into the water tank, inject the textile liquid into the reaction tank of the textile equipment, and vacuumize for 2 hours to remove the air bubbles, and then in N with a pressure of 120kPa 2 Driven, the spinning liquid is formed through a spinneret with an outer diameter of 1.5 mm and an inner diameter of 1 mm and enters the water tank, and placed in deionized water for 72 hours to obtain a tubular asymmetric hollow fiber SOFC anode green body;

[0059] (2) Cut the asymmetric hollow f...

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Abstract

The invention discloses a preparation method for an asymmetric hollow fiber type solid oxide fuel cell. The method comprises the following steps of: preparing an anode blank of the asymmetric hollow fiber type solid oxide fuel cell through a phase inversion textile technology; performing suspended sintering on the anode blank to form an anode support with superior mechanical performance; dip-coating the anode support in electrolyte slurry through a dip-coating process to prepare an electrolyte layer; and sequentially preparing cathode brushing solution and cathode afflux solution into the asymmetric hollow fiber type solid oxide fuel cell through a brushing process. The preparation method has the advantages of simple and feasible process, low cost, no need of any spray-coating equipment, easiness in industrial large-scale production and the like; the anode and cathode three-phase region of the obtained asymmetric hollow fiber type solid oxide fuel cell is more ideal; the electrolyte layer is extremely thin and has high compactness; and thus, the electrochemical comprehensive performance of the solid oxide fuel cell is improved.

Description

Technical field [0001] The invention is the field of fuel cells, involving the field of energy chemical power solid oxide fuel cells, and the preparation method of asymmetric hollow fiber -type solid oxide fuel cells is specifically involved. Background technique [0002] Solid oxide fuel cell (abbreviated: SOFC) is a full solid energy conversion device. Because it has very thin electrolytes and electrodes, it can greatly reduce the volume and weight of the battery, which can reach a large ratio; the battery is at high temperature at high temperature;After work, the electrode reaction process is quite rapid. You can use fuels such as methane, natural gas and gas directly. The fuel adaptability is strong; you do not need to use precious metals as a catalyst, which can greatly reduce the cost of battery production; at work temperature, it can achieve thermal power production and comprehensive fuel comprehensive fuel comprehensive.The utilization rate is high, the total energy utili...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/10H01M4/88H01M8/1213H01M8/1226
CPCY02E60/522Y02E60/50Y02P70/50
Inventor 王海辉周笛雄彭舒军魏嫣莹
Owner SOUTH CHINA UNIV OF TECH
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