Structure of flat-plate type metal-support solid oxide fuel cell for immersing electrodes

A solid oxide and metal support technology, which is applied in the direction of solid electrolyte fuel cells, fuel cells, fuel cell components, etc., can solve the problems of long-term stability decline, oxidation resistance reduction, anode metal particle Ni coarsening, etc. Achieve the effects of simplifying the structure and preparation process, improving fuel applicability, and shortening the production cycle

Active Publication Date: 2015-06-03
SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 1. Anode problem: The traditional metal-supported SOFC adopts the structure of metal support/anode/electrolyte/cathode. During the high-temperature co-sintering preparation or long-term operation of the battery, the anode metal particles Ni will coarsen, and will also be combined with the alloy Interdiffusion occurs between elements Fe and Cr
This not only reduces the catalytic performance of the anode, but also leads to changes in the thermal expansion coefficient of the support, a decrease in long-term stability, a decrease in electrical conductivity, and a decrease in oxidation resistance.
Adding a diffusion barrier layer between the anode and the metal support can prevent the interdiffusion between the alloying elements and the anode metal particles, but it will lead to the complexity of the preparation process

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Structure of flat-plate type metal-support solid oxide fuel cell for immersing electrodes
  • Structure of flat-plate type metal-support solid oxide fuel cell for immersing electrodes
  • Structure of flat-plate type metal-support solid oxide fuel cell for immersing electrodes

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0035] Example 1

[0036] Weigh 50g of 430 stainless steel powder, add 10g of solvent absolute ethanol and 5g of methyl ethyl ketone, 6g of dispersant triethanolamine, 2g of plasticizer dibutyl phthalate, and 6g of binder polyvinyl butyral. Pore ​​agent ammonium oxalate 20g; weigh 30g electrolyte YSZ powder, add 5g each of solvent xylene and butyl acetate, dispersant acrylic resin DM-55 1g, plasticizer benzoate B-50 2g and binder in turn Polypropylene resin B-72 4g; weigh 15g of YSZ powder for cathode precursor layer, add 4g each of solvent xylene and butyl acetate, dispersant acrylic resin DM-55 1g, dispersant acrylic copolymer BYK1g, plasticizer benzene 0.5g of formate B-50, 1g of binder polypropylene resin B-72, 10g of pore former ammonium oxalate;

[0037] Ball mill the above 3 kinds of slurries separately, and pass the mixed slurries through a screen and vacuum treatment to remove the air in the slurries;

[0038] Casting and drying the above-mentioned three kinds of slurries,...

Example Embodiment

[0042] Example 2

[0043] Weigh 50g of 430 stainless steel powder, add 12g of solvent absolute ethanol and 6g of methyl ethyl ketone, 5g of dispersant triethanolamine, 2g of plasticizer dibutyl phthalate, 2g of polyethylene glycol, and binder polyvinyl alcohol. 3g butyral, 20g pore former ammonium carbonate; weigh 30g electrolyte YSZ powder, add 5g each of solvent xylene and butyl acetate, dispersant acrylic resin DM-551g, plasticizer benzoate B-50 2g and 4g of binder polypropylene resin B-72; weigh 15g of cathode precursor layer YSZ powder, add 4g each of solvent xylene and butyl acetate, dispersant acrylic resin DM-55 1.5g and acrylic copolymer BYK 1g, Plasticizer benzoate B-50 1g, binder polypropylene resin B-72 2g, pore former 15g ammonium oxalate;

[0044] Ball mill the above 3 kinds of slurries separately, and pass the mixed slurries through a screen and vacuum treatment to remove air in the slurries;

[0045] Casting and drying the above-mentioned three kinds of slurries, re...

Example Embodiment

[0049] Example 3

[0050] Weigh 50g of 430 stainless steel powder, add 15g of solvent absolute ethanol and 7.5g of methyl ethyl ketone, 5g of dispersant triethanolamine, 2g of plasticizer dibutyl phthalate, 2g of polyethylene glycol, and polyethylene of binder 3.5g butyral, 20g pore former wheat flour; weigh 30g electrolyte YSZ powder, add 5g each of solvent xylene and butyl acetate, dispersant acrylic resin DM-551g, plasticizer benzoate B- 50 2g and binder polypropylene resin B-72 4g; weigh 15g of cathode precursor layer YSZ powder, add 4g each of solvent xylene and butyl acetate, dispersant acrylic resin DM-55 1g and acrylic copolymer BYK 1g , Plasticizer benzoate B-50 0.5g, binder polypropylene resin B-72 1g, pore former wheat flour 10g;

[0051] Ball mill the above 3 kinds of slurries separately, and pass the mixed slurries through a screen and vacuum treatment to remove the air in the slurries;

[0052] Casting and drying the above three kinds of slurries, respectively, to pre...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
Thicknessaaaaaaaaaa
Apertureaaaaaaaaaa
Thicknessaaaaaaaaaa
Login to view more

Abstract

The invention discloses a structure of a flat-plate type metal-support solid oxide fuel cell for immersing electrodes. The cell is provided with a porous metal support layer, a compact electrolyte layer and a porous cathode precursor layer from inside to outside in sequence; and the porous metal support layer, the compact electrolyte layer and the porous cathode precursor layer are commonly sintered into an integrated structure. The structure disclosed by the invention has the advantages that the cost is low, the operability is strong, the problem that the coarsening of anode particles and diffusion among alloy elements due to high-temperature common sintering can be effectively avoided, simultaneously the contradiction that the combination of the cathode and a electrolyte is bad during low-temperature common sintering and the excessive oxidation of the metal support layer can exists during high-temperature sintering is also solved, so that the application prospect is wide.

Description

technical field [0001] The invention relates to a flat metal-supported solid oxide fuel cell structure for an impregnated electrode, belonging to the technical field of solid oxide fuel cells. Background technique [0002] Solid Oxide Fuel Cell (SOFC) is an electrochemical device that directly converts the chemical energy of hydrogen, natural gas and biomass gas fuels into electrical energy. Features, can be widely used in large-scale power plants, distributed power plants, automotive auxiliary power supply, household combined heat and power systems, etc. Although SOFC has many excellent properties, it has not yet been applied on a large scale, and its main constraints are cost and lifetime issues. Compared with the traditional electrolyte support or electrode support structure, the new metal support structure can improve the mechanical strength of the single cell, increase the thermal shock resistance of the battery, reduce the cost of the SOFC system, and help solve the p...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): H01M8/12H01M8/02H01M4/88H01M4/86H01M8/0271
CPCY02E60/50Y02P70/50
Inventor 周玉存王绍荣占忠亮孟燮袁春刘雪娇钱继勤
Owner SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap