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Anti-carbon metal-supported solid oxide fuel cell and preparation method thereof

A solid oxide, metal-supported technology, used in solid electrolyte fuel cells, fuel cells, battery electrodes, etc., can solve problems such as carbon deposition, achieve wide application prospects, enhance interface contact, and low cost of preparation processes.

Active Publication Date: 2019-06-18
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In view of the above defects or improvement needs of the prior art, the present invention provides a carbon-deposition-resistant metal-supported solid oxide fuel cell and its preparation method, the purpose of which is to solve the problem of metal-supported solid oxide fuel cells using hydrocarbons as The problem of carbon deposition is easy to occur when fueling, so that metal-supported solid oxide fuel cells can operate stably for a long time in hydrocarbon fuels

Method used

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preparation example Construction

[0050] According to another aspect of the present invention, there is provided a method for preparing an anti-carbon deposition metal-supported solid oxide fuel cell, comprising the following steps:

[0051] S1 Anhydrous ethanol and xylene are mixed evenly and a dispersant is added as a solvent, the mixed powder formed by the first precursor and a pore-forming agent is added to the solvent and ball milled, and the plasticizer, the first binder and the first binder are added in sequence The defoaming agent is ball-milled again to form a casting slurry, which is cast after defoaming and dried to obtain a support body green layer; the first binder is polyvinyl butyral; the MgO powder The mass is 0.05%-0.1% of the mass of the first precursor.

[0052] S2 Mix the second precursor and the fluorite structure oxide or the second precursor and the ion-conductive perovskite structure oxide evenly, add the second binder, and grind to obtain the slurry of the anode functional layer, and m...

Embodiment 1

[0076] (1) Take 60ml of absolute ethanol and xylene and mix them evenly as a solvent, add 4.5g of fish oil as a dispersant, weigh 207g of NiO powder, 23g of Fe 2 o 3 Powder and 1.15g MgO powder were added to the above solvent, then 5g of starch was added as a pore-forming agent, stirred evenly and then ball-milled for 24h; then 9g of butyl benzyl phthalate (BBP), 9g of polyalkylene glycol ( PAG), 21g polyvinyl butyral (PVB) and 0.2g cyclohexanone, and ball milled for 24h after stirring evenly. The slurry obtained after ball milling was subjected to vacuum defoaming treatment for 30 minutes, and tape casting and drying were performed on a tape casting machine to obtain a support body green body with a thickness of 1 mm.

[0077] (2) Ethyl cellulose was dissolved in terpineol to prepare an ethyl cellulose terpineol solution with an ethyl cellulose content of 4wt.%, which was used as a binder for preparing screen printing paste.

[0078] (3) 1.8gNiO powder and 1.2gCe 0.8 Gd 0...

Embodiment 2

[0084] (1) Take 60ml of absolute ethanol and xylene and mix them evenly as a solvent, add 4.5g of fish oil as a dispersant, weigh 115g of NiO powder, 115g of Fe 2 o 3 Powder and 1.15g MgO powder were added to the above solvent, then 5g of starch was added as a pore-forming agent, stirred evenly and then ball-milled for 24h; then 11g of butyl benzyl phthalate (BBP), 11g of polyalkylene glycol ( PAG), 23g polyvinyl butyral (PVB) and 0.25g cyclohexanone, and ball milled for 24h after stirring evenly. The slurry obtained after ball milling was subjected to vacuum defoaming treatment for 30 minutes, and tape casting and drying were performed on a tape casting machine to obtain a support body green body with a thickness of 1 mm.

[0085] (2) Ethyl cellulose was dissolved in terpineol to prepare an ethyl cellulose terpineol solution with an ethyl cellulose content of 4wt.%, which was used as a binder for preparing screen printing paste.

[0086] (3) 1.8gNiO powder and 1.2gCe 0.9 S...

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Abstract

The invention belongs to the technical field of solid oxide fuel cells, and discloses an anti-carbon metal-supported solid oxide fuel cell and a preparation method thereof. The anti-carbon metal-supported solid oxide fuel cell comprises a porous catalytic reforming layer, a porous metal supporting layer, a porous anode functional layer, a dense electrolyte layer and a porous cathode layer which are sequentially and tightly combined; wherein the porous catalytic reforming layer comprises a Ni-M alloy and an oxygen storage-water absorbing oxide; the porous metal supporting layer comprises a Ni-Malloy and MgO; and the porous anode functional layer comprises a Ni-M alloy and a fluorite structural oxide or comprises a Ni-M alloy and a (ionic conductive) perovskite structural oxide. The invention further discloses the preparation method of the corresponding cell. When hydrocarbons are used as fuel, the anti-carbon metal-supported solid oxide fuel cell can operate steadily in a long term inthe hydrocarbon fuel, and the fuel cell has low preparation process cost, is suitable for large-area single cells and scale production and manufacturing, and has broad application prospects.

Description

technical field [0001] The invention belongs to the technical field of solid oxide fuel cells, and more specifically relates to a carbon-deposition-resistant metal-supported solid oxide fuel cell and a preparation method thereof. Background technique [0002] A solid oxide fuel cell (SOFC) is an electrochemical device that directly converts chemical energy in fossil fuels (coal, oil, natural gas, and other hydrocarbons) into electrical energy. SOFC has the advantages of high efficiency, environmental protection, quietness, and modularization, and has broad application prospects in fixed power stations, mobile transportation, and military fields. It is of great significance to protect the living environment of human beings. [0003] The structure types of traditional SOFC single cells usually include electrolyte-supported type (ES-SOFC), cathode-supported type (CS-SOFC) and anode-supported type (AS-SOFC). In the above structure, the mechanical support is usually ceramic or ...

Claims

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Application Information

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IPC IPC(8): H01M8/10H01M8/0612H01M8/0273H01M4/86
CPCY02E60/50Y02P70/50
Inventor 王欣李奇昊池波李箭蒲健贾礼超颜冬
Owner HUAZHONG UNIV OF SCI & TECH
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