Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A kind of solid oxide fuel cell and its preparation method

A solid oxide and fuel cell technology, applied in battery electrodes, circuits, electrical components, etc., can solve problems affecting battery performance, large concentration polarization, unsuitable for preparation, etc., and achieve excellent mechanical strength and reduced transport resistance Small, fine microstructure effect

Active Publication Date: 2017-03-08
安徽中科新研陶瓷科技有限公司
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The dry pressing method is not suitable for the preparation of large-sized single cells
Traditional tape-casting preparation technology, the porous support formed by the natural accumulation of pore-forming agent and powder particles, the diffusion channel of the electrode reaction gas is tortuous, often resulting in a large concentration polarization, which affects the performance of the battery

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
  • A kind of solid oxide fuel cell and its preparation method
  • A kind of solid oxide fuel cell and its preparation method
  • A kind of solid oxide fuel cell and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0051] In a specific embodiment, the steps of the method for preparing a solid oxide fuel cell with a flat straight-pore structural support of the present invention are as follows:

[0052] (1) Dissolve 4-10% binder polyethersulfone (PESf) and 1-2% dispersant polyvinylpyrrolidone (PVP) in 20-38% organic solvent 1-methyl- In 2-pyrrolidone (NMP), make a uniform organic solution, then add ceramic powder and pore-forming agent to the organic solution, and ball mill to prepare a stable support layer slurry 1 with a solid content of 50-75%, wherein the ceramic powder The body accounts for 70-95% of the total solids; a similar method is used to prepare the battery anode (or cathode) active layer slurry 2, wherein the mass fraction of polyethersulfone is 4-12%, polyvinylpyrrolidone is 1-3%, 1- The solid content of the anode (or cathode) active layer material powder is 45-75%.

[0053] (2) vacuum degassing slurry 1 and slurry 2 for 5-30 minutes;

[0054] (3) On the polyester film car...

Embodiment 1

[0068] Example 1: Solid Oxide Fuel Cell Supported by Flat Straight Hole Structure Anode

[0069] The electronic conductive phase of the anode support layer adopts domestic NiO powder, its particle size D50=1μm, and the ion conductive phase adopts domestic Zr 0.84 Y 0.16 o 1.92 (YSZ), its particle size D50 = 0.75 μm; the electronically conductive phase NiO of the anode active layer is obtained by decomposing basic nickel carbonate at 700 ° C, its particle size D50 = 0.5 μm, and the ion conductive phase also uses domestic Zr 0.84 Y 0.16 o 1.92 (YSZ), the particle size D50=0.75 μm;

[0070] Mix the above-mentioned NiO and YSZ powders for the anode support layer at a volume ratio of 56:44, mix them uniformly by ball milling in ethanol for 6 hours, and obtain the NiO-YSZ mixed powder after drying; at the same time prepare the mixed powder for the anode active layer, wherein NiO and YSZ The powder volume ratio is 47:53;

[0071] Weigh 160g of anode support layer mixed powder, ...

Embodiment 2

[0078] Example 2: Flat-type straight-hole structure cathode-supported solid oxide fuel cell

[0079] According to (La 0.8 Sr 0.2 ) 0.95 MnO 3-δ (LSM) stoichiometric ratio accurately weighed La 2 o 3 , SrCO 3 and MnO 2 , the powders were mixed and ball milled with ethanol as the medium for 24 hours; after drying, they were calcined at 1100°C for 10 hours to obtain perovskite phase LSM powders with a particle size of D50=1.5 μm, which were used as the electronically conductive phase of the cathode support layer and the cathode active layer Powder. The cathode support layer and the cathode active layer ion-conducting phase powder use domestic Zr 0.84 Y 0.16 o 1.92 (YSZ), particle size D50 = 0.75 μm.

[0080] Mix the above-mentioned cathode support layer LSM and YSZ powders in a volume ratio of 50:50, mix them uniformly by ball milling in ethanol for 6 hours, and obtain the LSM-YSZ mixed powder after drying; prepare the mixed powder of the cathode active layer at the sa...

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
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention provides a solid oxide fuel cell (SOFC) with a straight hole structured support and a preparing method of the SOFC, and mainly relates to the field of fuel cells. The SOFC basically structurally comprises a straight hole support layer 500-1500 microns thick, an anode active layer 5-80 microns thick, a cathode active layer 5-80 microns thick, and a dense electrolyte layer 5-100 microns thick. With the straight hole structured support of the SOFC, the concentration polarization in the cell is effectively lowered and the performance of the cell is effectively improved while the enough high mechanical strength of the single cell is guaranteed. The method provided by the invention is used for preparing the SOFC with the straight hole structured support by using a technique combining multilayer slurry co-tape casting with phase inversion. This method is low in cost, easy to industrialize, and good for application and industrialization development of the SOFC technology.

Description

technical field [0001] The invention relates to the field of fuel cells, in particular to a solid oxide fuel cell with a straight pore structure support and a preparation method thereof. Background technique [0002] A solid oxide fuel cell (SOFC) is a device that directly converts chemical energy into electrical energy at high temperatures (500-1000°C). Compared with other fuel cells, SOFC has the following advantages: high energy conversion efficiency; wide range of fuel adaptation, can directly use small molecule hydrocarbons as fuel; no precious metal catalyst; all solid-state safety structure, safe and reliable; wide application range, It can be used as portable mobile power supply, vehicle auxiliary power supply, distributed power station, etc. Therefore, it has received widespread attention worldwide. With the development of solid oxide fuel cell technology, electrode-supported thin-film electrolyte SOFC has become the mainstream. Among them, the electrode-supported...

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
Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/86H01M4/88
CPCH01M4/86H01M4/88Y02E60/50
Inventor 蔺杰张彧黄华高建峰陈初升
Owner 安徽中科新研陶瓷科技有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com