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A kind of solid oxide fuel cell electrode material and preparation method thereof

A fuel cell electrode and solid oxide technology, applied in the field of solid oxide fuel cell electrode material and preparation, solid oxide fuel cell three-dimensional network structure electrode and preparation field, can solve the problem of uneven dispersion, reduced porosity, catalytic It can solve the problems of low activity and other problems, and achieve the effect of solving the reduction of electron/ionic conductivity, the reduction of open porosity, and the improvement of catalytic activity.

Active Publication Date: 2021-10-08
SHANDONG RES & DESIGN ACADEMY OF IND CERAMICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] (1) The dispersion is uneven, the prepared pores are too large, the contact area with the catalytic component is small, the catalytic activity is low, and the strength is low at the same time
[0004] (2) The prepared pores are circular pores. As the temperature increases, some pores form closed pores, the porosity decreases, and the catalytic activity and gas passage rate decrease.

Method used

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  • A kind of solid oxide fuel cell electrode material and preparation method thereof
  • A kind of solid oxide fuel cell electrode material and preparation method thereof
  • A kind of solid oxide fuel cell electrode material and preparation method thereof

Examples

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Effect test

Embodiment 1

[0041] Electrode materials include anode materials and cathode materials, wherein,

[0042] The preparation process of the solid oxide fuel cell anode material in this embodiment is as follows:

[0043] S1. Put 40 parts of anode raw materials, 2 parts of pore-forming agent, 1 part of dispersant ethanol and 60 parts of water in a ball milling altar in proportion, and ball mill for 1 hour.

[0044] in,

[0045] The pore-forming agent is macromolecule spherical pore-forming agent polyethylene and carbon powder, wherein polyethylene accounts for 80% of the total pore-forming agent.

[0046] S2. Start the constant temperature heating device, and stir the slurry in S1 in a heatable stirring mill for 0.5 hours.

[0047] Among them, the temperature of the constant temperature heating device can be controlled at any temperature within 0-200°C, and the specific temperature is determined according to the heat distortion temperature of the pore-forming agent.

[0048] S3. Continue to m...

Embodiment 2

[0064] The features of this embodiment that are the same as those of Embodiment 1 will not be described in detail. The features of this embodiment that are different from Embodiment 1 are:

[0065] The preparation process of the solid oxide fuel cell anode material in this embodiment is as follows:

[0066] S1. Put 60 parts of anode raw materials, 10 parts of pore-forming agent, 2 parts of dispersant polypropylene alcohol and 40 parts of water in a ball milling altar in proportion, and ball mill for 3 hours.

[0067] in,

[0068] The pore-forming agent is polyvinyl chloride, a spherical pore-forming agent made of polymer material.

[0069] S2. Start the constant temperature heating device, and stir the slurry in S1 in a heatable stirring mill for 2 hours.

[0070] Among them, the temperature of the constant temperature heating device can be controlled at any temperature within 0-200°C, and the specific temperature is determined according to the heat distortion temperature of...

Embodiment 3

[0087] The features of this embodiment that are the same as those of Embodiment 1 will not be described in detail. The features of this embodiment that are different from Embodiment 1 are:

[0088] The preparation process of the solid oxide fuel cell anode material in this embodiment is as follows:

[0089] S1. Put 50 parts of anode raw materials, 7 parts of pore-forming agent, 1 part of dispersant polyacrylamide and 45 parts of water in a ball milling altar in proportion, and ball mill for 2 hours.

[0090] in,

[0091] The pore-forming agent is a spherical pore-forming agent of polymer material polystyrene and starch, wherein polystyrene accounts for 90% of the total amount of the pore-forming agent.

[0092] S2. Start the constant temperature heating device, and stir the slurry in S1 in a heatable stirring mill for 1 hour.

[0093] Among them, the temperature of the constant temperature heating device can be controlled at any temperature within 0-200°C, and the specific t...

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Abstract

The invention relates to a solid oxide fuel cell electrode material and a preparation method thereof, which utilizes the thermal deformation phenomenon of a polymer material pore-forming agent, and reprocesses the polymer material pore-forming agent in the mixing process to produce a multi-dimensional Irregular pores with similar pore sizes can be used to prepare electrode materials with a three-dimensional network structure. And under the same electrode raw material and pore-forming agent content, the porosity of the electrode material obtained in the present invention can be improved by 2-5%. Closed cells will be formed, so that the porosity of the open cells will decrease, so the closed cells in the three-dimensional network pore structure obtained by the present invention will be much less, and the rate of decline in the porosity of the open cells will be significantly smaller than that of the circular hole sample, which not only effectively increases the catalytic reaction. The area improves the catalytic activity of the battery, and at the same time solves the problem of reduced electronic / ionic conductivity caused by hole defects that occur during the preparation of electrode materials.

Description

technical field [0001] The invention belongs to the field of solid oxide fuel cells (SOFC), and relates to a solid oxide fuel cell electrode material and a preparation method thereof, in particular to a solid oxide fuel cell three-dimensional network structure electrode and a preparation method thereof. Background technique [0002] As the key material component of the battery, SOFC electrode not only has high electronic / ionic conductivity, good chemical and thermal stability and certain mechanical strength, but also needs to have high catalytic activity. Catalytic activity requires catalytic components and fuel gas , full contact with air, so the cathode and anode need to have a certain porosity. There are following problems in the method for preparing stomata by adding pore-forming agent: [0003] (1) The dispersion is uneven, the prepared pores are too large, the contact area with the catalytic component is small, the catalytic activity is low, and the strength is low at...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/88H01M4/86H01M8/12
CPCH01M4/8605H01M4/88H01M2008/1293Y02E60/50Y02P70/50
Inventor 马腾飞唐钰栋赵世凯薛友祥徐传伟赵晶王晓璇
Owner SHANDONG RES & DESIGN ACADEMY OF IND CERAMICS
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