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Preparation method of hollow fiber solid oxide fuel cell with petal-shaped cross section

A solid oxide, fuel cell technology, used in fuel cells, circuits, electrical components, etc., can solve the problems of reduced battery output performance, small external surface area, and reduced effective area, etc., to improve output power, promote surface reaction, increase The effect of viscosity

Active Publication Date: 2020-05-19
SHANDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Chinese patent CN201608235U discloses a microtubular ceramic membrane fuel cell stack, including several microtubular ceramic membrane fuel cells and metal electrical connection devices between the cells, but the device uses a central conductive rod to fix the single cell, reducing the Mass transfer efficiency, thereby reducing the output performance of the battery; Chinese patent CN103349918A discloses a method for preparing a honeycomb inorganic membrane. If it is made into a fuel cell support, the mass transfer resistance is relatively high, but the effective area of ​​the membrane is reduced instead; China Patent CN101733048A discloses a hollow fiber membrane reactor for gas-phase oxidation reaction and its preparation and application. The relative surface area of ​​the hollow fiber membrane reactor is relatively low; Chinese patent CN106316359A discloses a ceramic membrane support made of water purification sludge The method and the prepared ceramic membrane support body, the ceramic membrane support body obtained by the patent is difficult to be used as a solid oxide fuel cell; Chinese patent CN1676198A discloses a ceramic hollow fiber membrane reactor for air separation oxygen production and its production method and application, the high mass transfer resistance in this patent makes it difficult to be used as an anode or cathode support
[0005] The support prepared by the above-mentioned patent has large thickness, small external area and low efficiency

Method used

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  • Preparation method of hollow fiber solid oxide fuel cell with petal-shaped cross section
  • Preparation method of hollow fiber solid oxide fuel cell with petal-shaped cross section
  • Preparation method of hollow fiber solid oxide fuel cell with petal-shaped cross section

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Embodiment 1

[0046] The preparation method of the petal-shaped hollow fiber solid oxide fuel cell comprises the following steps:

[0047] (1) Preparation of polymer solution

[0048] Dissolve 12.5g of polyethersulfone, 0.1g of polyacrylamide, and 1g of polyvinylpyrrolidone in 50g of N,N-dimethylformamide-d 7 , to obtain a polymer solution; wherein polyacrylamide is added in the form of a mixed solution: 0.1 g of polyacrylamide is dissolved in 3 g of water, and then added to 10 g of ethylene glycol to form a mixed solution.

[0049] (2) Preparation of ceramic-polymer casting solution

[0050] 150g La 0.6 Sr 0.4 co 0.2 Fe 0.8 o 3-δ Add the cathode ceramic powder to 75.6g of the polymer solution obtained in step (1), and fully stir for 24 hours to make it completely and evenly dispersed in the polymer solution to form a ceramic-polymer casting solution with a viscosity of 26500MPa·s ; The average particle size of the ceramic powder is 1 μm.

[0051] (3) Preparation of a hollow fiber c...

Embodiment 2

[0058] The preparation method of the petal-shaped hollow fiber solid oxide fuel cell comprises the following steps:

[0059] (1) Preparation of polymer solution

[0060] Dissolve 12.5g polyethersulfone, 0.5g polyacrylamide, 2g polyvinyl butyral in 50g N,N-dimethylformamide-d 7 , to obtain a polymer solution; wherein polyacrylamide is added in the form of a mixed solution: 0.5 g of polyacrylamide is dissolved in 5 g of water, and then added to 20 g of ethylene glycol to form a mixed solution.

[0061] (2) Preparation of ceramic-polymer casting solution

[0062] 145.5g La 0.6 Sr 0.4 CoO 3-δ The cathode ceramic powder was added to 79g of the polymer solution obtained in step (1), and stirred for 30 hours to make it completely and evenly dispersed in the polymer solution to form a ceramic-polymer casting solution with a viscosity of 28400MPa·s; The average particle size of the ceramic powder is 4 μm.

[0063] (3) Preparation of a hollow fiber cathode support embryo body with...

Embodiment 3

[0070] The preparation method of the petal-shaped hollow fiber solid oxide fuel cell comprises the following steps:

[0071] (1) Preparation of polymer solution

[0072] Dissolve 12.5g polysulfone, 0.5g polyacrylamide, 4g polyammonium methacrylate in 50g N,N-dimethylformamide-d 7 , to obtain a polymer solution; wherein polyacrylamide is added in the form of a mixed solution: 0.5 g of polyacrylamide is dissolved in 5 g of water, and then added to 25 g of ethylene glycol to form a mixed solution.

[0073] (2) Preparation of ceramic-polymer casting solution

[0074] 175g Ni 0.8 Fe 0.2 o x The anode ceramic powder is added to 95g of the polymer solution obtained in step (1), and fully stirred for 30 hours to make it completely and evenly dispersed in the polymer solution to form a ceramic-polymer casting solution with a viscosity of 28500MPa·s; The average particle size of the ceramic powder is 5 μm.

[0075] (3) Preparation of hollow fiber anode support embryo body with pet...

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Abstract

The invention belongs to the technical field of solid oxide electrolytic cells, and in particular relates to a method for preparing a hollow fiber solid oxide fuel cell with a petal-shaped cross section. The method comprises preparing a polymer solution, preparing a ceramic polymer casting solution, preparing a petal-shaped hollow fiber support body, preparing a petal-shaped hollow fiber support body, and preparing a petal-shaped cross-section. Hollow fiber solid oxide fuel cells. The outer surface of the support body of the hollow fiber solid oxide fuel cell of the present invention is no longer a smooth arc, but a curved surface with uniform ups and downs. The novel hollow fiber electrolyte membrane support increases the area of ​​the hollow fiber solid oxide fuel cell to a certain extent, improves the output power, promotes the surface reaction, and saves the cost.

Description

technical field [0001] The invention belongs to the technical field of solid oxide electrolytic cells, and in particular relates to a method for preparing a hollow fiber solid oxide fuel cell with a petal-shaped cross section. Background technique [0002] Solid oxide fuel cell is a medium-high temperature energy conversion device that converts chemical energy into electrical energy. According to the shape of the device, it is flat, tubular, and micro-tubular. According to the type of support, it is divided into anode support type, cathode support type and electrolyte. support type. The microtubular solid oxide fuel cell has the characteristics of easy sealing and high aspect ratio. At the same time, its preparation method is extrusion molding and phase inversion spinning, which greatly increases the surface area of ​​the solid oxide fuel cell. [0003] Chinese patent CN201608235U discloses a microtubular ceramic membrane fuel cell stack, including several microtubular cera...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M8/1226
CPCH01M8/1226Y02E60/50
Inventor 孟波韩宁刘少敏王晓斌张津津张曙光
Owner SHANDONG UNIV OF TECH
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