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A kind of preparation method of solid oxide fuel cell electrolyte membrane

A solid oxide and electrolyte membrane technology, applied in fuel cells, circuits, electrical components, etc., can solve the problems of insufficient product density and high temperature, and achieve the effects of shortening sintering time, uniform distribution, and improving conductivity

Active Publication Date: 2020-07-10
东营市广利临港产业园有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides a method for preparing an electrolyte membrane of a solid oxide fuel cell, which is used to solve the problems of high temperature and insufficient density of the product in the traditional electrolyte membrane preparation method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A method for preparing an electrolyte membrane for a solid oxide fuel cell, comprising the following steps:

[0026] S1. Sm(NO 3 ) 3 solution, Ce(NO 3 ) 3 solution and Y(NO 3 ) 3 solution, the configuration concentration is 0.05mol / L oxalic acid solution, in parts by volume, take 0.2 parts of Sm(NO 3 ) 3 solution, 8.8 parts Ce(NO 3 ) 3 solution and 1 part of Y(NO 3 ) 3 Put the solution into the reaction vessel, add the oxalic acid solution into the reaction vessel by spraying while stirring, stabilize the pH value of the reaction solution at 6.8 with ammonia water with a mass fraction of 20%, and when there is no more precipitate in the reaction vessel After the reaction, the precipitate was separated by filtration, washed alternately with deionized water and absolute ethanol, and then the precipitate was calcined at 550°C for 4 hours to obtain an electrolyte powder;

[0027] S2. In parts by weight, mix 200 parts of electrolyte powder, 100 parts of solvent, 3...

Embodiment 2

[0033] A method for preparing an electrolyte membrane for a solid oxide fuel cell, comprising the following steps:

[0034] S1. Sm(NO 3 ) 3 solution, Ce(NO 3 ) 3 solution and Y(NO 3 ) 3 solution, the configuration concentration is 0.05mol / L oxalic acid solution, in parts by volume, take 0.2 parts of Sm(NO 3 ) 3 solution, 8.8 parts Ce(NO 3 ) 3 solution and 1 part of Y(NO 3 ) 3Add the solution into the reaction vessel, add the oxalic acid solution into the reaction vessel by spraying while stirring, stabilize the pH value of the reaction solution at 6.5 with ammonia water with a mass fraction of 25%, and when there is no more precipitate in the reaction vessel After the reaction, the precipitate was separated by filtration, washed alternately with deionized water and absolute ethanol, and then the precipitate was calcined at 750°C for 3 hours to obtain an electrolyte powder;

[0035] S2. In parts by weight, mix 210 parts of electrolyte powder, 100 parts of solvent, 4 ...

Embodiment 3

[0041] A method for preparing an electrolyte membrane for a solid oxide fuel cell, comprising the following steps:

[0042] S1. Sm(NO 3 ) 3 solution, Ce(NO 3 ) 3 solution and Y(NO 3 ) 3 solution, the configuration concentration is 0.05mol / L oxalic acid solution, in parts by volume, take 0.2 parts of Sm(NO 3 ) 3 solution, 8.8 parts Ce(NO 3 ) 3 solution and 1 part of Y(NO 3 ) 3 Add the solution into the reaction vessel, add the oxalic acid solution into the reaction vessel by spraying while stirring, stabilize the pH value of the reaction solution at 7.2 with ammonia water with a mass fraction of 22%, and when there is no more precipitate in the reaction vessel After the reaction, the precipitate was separated by filtration, washed alternately with deionized water and absolute ethanol, and then the precipitate was calcined at 660°C for 3.5 hours to obtain an electrolyte powder;

[0043] S2. In parts by weight, mix 230 parts of electrolyte powder, 100 parts of solvent,...

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PUM

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Abstract

The invention discloses a preparation method of an electrolyte membrane of a solid oxide fuel cell. By taking Sm(NO<3>)<3>, Ce(NO<3>)<3> and Y(NO<3>)<3> as the raw materials and by taking an oxalic acid solution as a precipitator, middle temperature fuel cell electrolyte powder is prepared by adopting a chemical precipitation-calcining method; and next, paste is prepared from 200-230 parts of electrolyte powder, 100 parts of solvent, 3-5 parts of ZnO powder, 8-15 parts of PVB binder, 5-9 parts of plasticizer, 10-15 parts of dispersing agent and 0.4-0.8 parts of defoaming agent, and next, the electrolyte membrane is prepared by a tape casting method. By virtue of the preparation method, the problems of high temperature and not high product compactness of the conventional electrolyte membrane preparation process can be solved.

Description

technical field [0001] The invention belongs to the field of solid oxide fuel cells, and in particular relates to a method for preparing an electrolyte membrane of a solid oxide fuel cell. Background technique [0002] In recent years, as a new energy source, fuel cells are receiving more and more attention. Fuel cells include solid oxide fuel cells, molten carbonate fuel cells, phosphoric acid fuel cells, and solid polymer fuel cells. Solid oxide fuel cells become the third-generation fuel cell system after the first-generation phosphate fuel cell and the second-generation molten carbonate fuel cell. Its operating temperature is relatively high, and it is also called a high-temperature fuel cell system. Solid oxide fuel cell exhaust gas has a high temperature and can be used for combined heat and power generation. The power generation efficiency is very high, and it is an effective way to replace thermal power generation in the future. Existing solid oxide fuel cell techn...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M8/1016H01M8/1018H01M8/1069H01M8/1004
CPCH01M8/1004H01M8/1016H01M8/1018H01M8/1069Y02E60/50
Inventor 不公告发明人
Owner 东营市广利临港产业园有限公司