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Porous inert support tubular solid oxide fuel cell with open ends, stack and preparation method thereof

A solid oxide and fuel cell technology, applied in solid electrolyte fuel cells, fuel cells, circuits, etc., can solve problems affecting battery reliability and stability, oxidation of metal connecting materials, and poor electrical conductivity, etc., to achieve convenient battery life. Effects of stack construction, increasing output voltage, and reducing current

Active Publication Date: 2017-09-26
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Connecting and taking power from the fuel outlet of the battery tube is easy to cause oxidation of the metal connecting material, and the repeated start-up of the battery system will also cause the connection part to loosen and the conductivity will deteriorate.
In the battery structure mentioned above, the current connection of the battery tube is in the high temperature area, which will affect the reliability and stability of the battery
[0006] At present, the primary problem restricting the development of solid oxide fuel cells is the problem of high cost
Followed by the reliability of the battery

Method used

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  • Porous inert support tubular solid oxide fuel cell with open ends, stack and preparation method thereof
  • Porous inert support tubular solid oxide fuel cell with open ends, stack and preparation method thereof
  • Porous inert support tubular solid oxide fuel cell with open ends, stack and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0032] After mixing magnesia-aluminum spinel, polyvinyl alcohol, starch and deionized water, a porous inert support tube 4 green body with open ends is prepared by extrusion or grouting, and the porous inert support tube 4 green body is suitable Add strontium lanthanum titanate to plug the green body, then open a hole at a suitable position on the tube wall, fill with NiO-YSZ (nickel oxide-strontium doped lanthanum manganite) conductive connection material, and finally put the green body at 1450 ° C Calcined for 5 hours to obtain a porous magnesium-aluminum spinel support tube with both ends open, electronically conductively connected in the tube but airtightly separated. The outer diameter of the tube is 15mm, and the porosity of the tube wall is 42%.

[0033] Add the powder material of each functional section to methyl cellulose and ethylene glycol to prepare corresponding slurry, according to the composition of each functional section and its position in the porous inert su...

Embodiment 2

[0036] According to the method described in Example 1, 80 α-cells were prepared. Wherein, the porous inert support tube 4 is a porous alumina tube with an outer diameter of 10 mm and a porosity of the tube wall of 35%. The inlet gas isolation section 11 has a length of 100mm, and the surface is coated with 8mol% yttria-stabilized zirconia dense film. The length of the battery segment 12 connected in series is 1200mm, and the length of each battery is 15mm. The anode is NiO-YSZ (nickel oxide-strontium doped lanthanum manganite), the thickness is 45 μm, the electrolyte is 8mol% yttria stabilized zirconia, the thickness is 20 μm, the connecting body is strontium lanthanum titanate, the thickness is 25 μm, the cathode It is LSM-YSZ (strontium-doped lanthanum manganite-yttria stabilized zirconia), the electrochemical reaction layer of the cathode is 32 μm, and the thickness of the current-collecting conductive layer of the cathode is 50 μm. The heat isolation section 13 has a len...

Embodiment 3

[0039] According to the method described in Example 1, 80 β batteries were prepared. Wherein, the porous inert support tube 4 is a magnesium aluminum spinel tube with a diameter of 15 mm and a porosity of the tube wall of 42%. The inlet gas isolation section 11 has a length of 100mm, and the surface is coated with 8mol% yttria-stabilized zirconia dense film. The length of the battery segment 12 connected in series is 1200mm, and the length of each battery is 15mm. The anode is NiO-YSZ (nickel oxide-strontium doped lanthanum manganite), the thickness is 45 μm, the electrolyte is 8mol% yttria stabilized zirconia, the thickness is 20 μm, the connecting body is strontium lanthanum titanate, the thickness is 25 μm, the cathode It is LSM-YSZ (strontium-doped lanthanum manganite-yttria stabilized zirconia), the electrochemical reaction layer of the cathode is 32 μm, and the thickness of the current-collecting conductive layer of the cathode is 50 μm. The heat isolation section 13 h...

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Abstract

The invention relates to a porous inert support tubular solid oxide fuel cell with open ends, an electric stack and a preparation method thereof. The battery includes a porous inert support tube with openings at both ends and a porous inert support tube that is electronically connected but airtightly separated. The outer wall is coated with different functional sections: inlet gas isolation section, series battery section, thermal isolation section, and battery connection terminal. The gas isolation section is used to isolate air and fuel. A series battery section is a battery connected in series. The thermal isolation section places the external conductive connection of the battery outside the high temperature area. The battery connection terminal provides an external electrical connection terminal of the battery. The battery of the present invention forms a battery row through the battery connection terminals, and the battery row further forms a battery stack by connecting in series or in parallel. The invention can greatly reduce the cost of the solid oxide fuel cell, avoid the influence of thermal expansion on the battery and the battery stack, reduce the influence of high temperature on the conductive connection, facilitate the series and parallel connection of different batteries, and facilitate the assembly of the battery stack.

Description

technical field [0001] The invention relates to a porous inert support tubular solid oxide fuel cell with open ends and a preparation method thereof. The solid oxide fuel cell can be applied to micro power sources, distributed power stations and power plants, can reduce manufacturing costs and improve power generation efficiency. Background technique [0002] Solid oxide fuel cell (SOFC) is a power generation device that uses solid oxide as the electrolyte diaphragm to efficiently and cleanly convert the chemical energy of the fuel into electrical energy through electrochemical reactions. Its power generation efficiency can reach more than 60%. The total energy efficiency is higher than 80%, and it is a new type of power generation device that reduces carbon dioxide emissions. Solid oxide fuel cells can not only use hydrogen fuel, but also use abundant and cheap natural gas, liquefied petroleum gas, fuel oil, vaporized gas of medium, city gas and biomass gas as fuel. [00...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M8/12H01M8/0271H01M8/243
CPCY02E60/50Y02P70/50
Inventor 程谟杰赵哲涂宝峰
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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