Metal support half-cell of solid oxide fuel cell and preparation method thereof

A solid oxide and fuel cell technology, applied in solid electrolyte fuel cells, fuel cell parts, fuel cells, etc., can solve the problems of cumbersome battery preparation process and so on

Active Publication Date: 2014-07-16
中弗(无锡)新能源有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the impregnation process requires repeated impregnation and heat treatment to make the content of the material reach the required amount, which makes the battery preparation process cumbersome.

Method used

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  • Metal support half-cell of solid oxide fuel cell and preparation method thereof
  • Metal support half-cell of solid oxide fuel cell and preparation method thereof
  • Metal support half-cell of solid oxide fuel cell and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] This embodiment relates to a metal-supported half-cell of a solid oxide fuel cell; the metal-supported half-cell has a structure such as figure 1 As shown, it includes a porous metal support layer thick film 1 , a porous metal ceramic gradient transition layer film 2 , a porous anode layer film 3 and a dense electrolyte layer film 4 , which are sequentially arranged from bottom to top. Its preparation process comprises the following steps:

[0057] A. Preparation of thick film green body of porous metal support layer and thin film green body of dense electrolyte layer;

[0058] Disperse 90 grams of stainless steel AM-1 (the composition is shown in Table 1) powder, 10 grams of raw powder pore-forming agent, 82 grams of methyl ethyl ketone and ethanol mixed solvent and 2 grams of triethyl phosphate in a weight ratio of 2:1 respectively. The agent was ball milled at 300 rpm for 8 hours with a planetary ball mill and mixed well. 12 grams of polyvinyl butyral binder, 6 gra...

Embodiment 2

[0069] The preparation of the metal-supported half-cell of the solid oxide fuel cell involved in this embodiment is as follows:

[0070] A. Preparation of thick film green body of porous metal support layer and thin film green body of dense electrolyte layer;

[0071] 85 grams of stainless steel AM-1 powder, 15 grams of raw powder pore-forming agent, 90 grams of butanone and ethanol mixed solvent and 3 grams of triethanolamine dispersant in a weight ratio of 2:1 were ball-milled with a planetary ball mill at 300 rpm. Mix for 8 hours. 13 grams of polyvinyl butyral binder, 7 grams of dibutyl phthalate and 7 grams of polyethylene glycol 200 mixed plasticizer were added to the above-mentioned ball milled slurry. ball mill at 300 rpm for another 16 hours to mix well. 85 grams of ScCeSZ powder, 70 grams of methyl ethyl ketone and ethanol mixed solvent and 4 grams of triethanolamine dispersant in a weight ratio of 2:1 were respectively mixed with a planetary ball mill at 300 rpm fo...

Embodiment 3

[0079] The preparation of the metal-supported half-cell of the solid oxide fuel cell involved in this embodiment is as follows:

[0080] A. Preparation of thick film green body of porous metal support layer and thin film green body of dense electrolyte layer;

[0081] 80 grams of stainless steel AM-1 powder, 20 grams of raw powder pore-forming agent, 100 grams of methyl ethyl ketone and ethanol mixed solvent and 4 grams of disc-80 dispersant in a weight ratio of 2:1 were mixed with a planetary ball mill at 300 rpm. Rotate ball mill for 8 hours and mix well. 14 grams of polyvinyl butyral binder, 8 grams of dibutyl phthalate and 8 grams of polyethylene glycol 200 mixed plasticizer were added to the above-mentioned ball-milled slurry. ball mill at 300 rpm for another 16 hours to mix well. 90 grams of SSZ powder, 80 grams of methyl ethyl ketone and ethanol mixed solvent and 6 grams of disc-80 dispersant in a weight ratio of 2:1 were respectively mixed with a planetary ball mill ...

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Abstract

The invention discloses a metal support half-cell of a solid oxide fuel cell and a preparation method thereof. The half-cell comprises a porous metal supporting layer thick membrane, a porous cermet gradient transition layer film, a porous anode layer and a compact electrolyte layer film from down to up. The porous gradient transition layer composed of a mixed oxide and a oxide with a fluorite structuring can avoid the direct contact of the porous metal supporting layer and the porous anode layer, and the mutual diffusion of Fe/Cr elements in the metal supporting layer and Ni element in the porous anode layer can be reduced under high temperature sintering condition. The mixed oxide is reduced to an alloy under the work condition of the cell; a high anode active material is formed at a side interface of the anode, a high conductivity composite material which takes the alloy as a main phase is formed on the side interface of a metal support body, so that higher conductivity is presented, ohmic resistance is reduced, electrocatalytic activity is not reduced, long-term stability for operation of the cell can be ensured, and good combination of the porous metal supporting layer and the porous anode layer can be simultaneously realized.

Description

technical field [0001] The invention relates to a half cell in the technical field of fuel cells and a preparation method thereof, in particular to a metal-supported half cell of a solid oxide fuel cell and a preparation method thereof. Background technique [0002] Solid oxide fuel cell (Solid Oxide Fuel Cell, SOFC) is an all-solid-state power generation device that directly converts chemical energy in fuel into electrical energy through electrochemical reaction. The transformation process has many advantages, among which the outstanding advantage lies in the wide applicability of fuels, that is, hydrogen, carbon monoxide and hydrocarbons can be used as fuels, so hydrogen, carbon monoxide, natural gas, liquefied gas, coal gas, biomass can be widely used Gas, methanol and ethanol and other hydrocarbon fuels. Solid oxide fuel cells have a wide range of applications, and their main applications include distributed power stations, home power stations, vehicle auxiliary power s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/02H01M8/0271H01M8/10
CPCH01M4/8605H01M4/8652H01M4/8657H01M4/8673H01M8/0232H01M8/0236H01M8/1213H01M8/1226H01M2008/1293Y02E60/50
Inventor 屠恒勇余晴春胡鸣若
Owner 中弗(无锡)新能源有限公司
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