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Method for preparing low temperature solid oxide fuel cell supported by porous metal

A technology of solid oxide and porous metal, which is applied in the preparation field of fuel cell technology, and can solve problems such as deposition, affecting battery life, and affecting battery electrochemical reaction performance

Inactive Publication Date: 2007-05-09
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in this patent, only a thin layer of active anode (thickness is 10 μm) is required to participate in the electrochemical reaction of the anode and the reaction of cracking hydrocarbons, which is likely to affect the electrochemical reaction of the battery Performance, but also cause carbon to deposit on the surface of the anode, thus affecting the life of the battery

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] First, a half cell is prepared.

[0024] A porous stainless steel support with a thickness of 0.5 mm, a pore diameter of 5 μm, and a porosity of 50% was obtained by casting method; secondly, NiO-ScSZ (or CGO) powder was screen-printed on the surface of the porous stainless steel support to obtain a thickness of 10 μm, 1 μm pore size, and 30% porosity of the porous anode film; then, on top of the porous anode film, a layer of ScSZ (scandium-doped zirconia) powder is screen-printed, with a thickness of 10 μm dense solid Electrolyte film; then, on top of the layer of solid electrolyte, a reaction barrier layer composed of CGO (gadolinium-doped cerium oxide) powder with a thickness of 5 μm is screen-printed. Using the above four layers as a half-cell, high-temperature co-sintering was carried out at 1200° C. for 3 hours under an inert atmosphere (99.99% Ar atmosphere).

[0025] Next, a single cell is prepared.

[0026] After the half-cell was cooled naturally, on the reac...

Embodiment 2

[0029] First, a half cell is prepared.

[0030]A porous stainless steel support with a thickness of 1 mm, a pore size of 10 μm, and a porosity of 70% was prepared by casting; secondly, NiO-ScSZ (or CGO) powder was screen-printed on the surface of the porous stainless steel support to obtain a thickness of 50 μm. , a porous anode film with a pore size of 3 μm and a porosity of 50%; then, on top of the porous anode film, a layer of ScSZ (scandium-doped zirconia) powder is screen-printed, with a thickness of 30 μm dense solid electrolyte Then, on top of the layer of solid electrolyte, a layer of CGO (gadolinium-doped cerium oxide) powder is screen-printed to form a reaction barrier layer with a thickness of 10 μm. Using the above four layers as a half-cell, high-temperature co-sintering was carried out at 1300° C. for 6 hours under an inert atmosphere (99.99% high-purity Ar).

[0031] Next, a single cell is prepared.

[0032] After the half-cell was cooled naturally, on the rea...

Embodiment 3

[0035] First, a half cell is prepared.

[0036] A porous stainless steel support with a thickness of 0.7 mm, a pore size of 7 μm, and a porosity of 40% was obtained by tape casting; secondly, NiO-ScSZ (or CGO) powder was screen-printed on the surface of the porous stainless steel support to obtain a thickness of 30 μm, pore diameter of 2 μm, and a porous anode film with a porosity of 40%; then, on top of the porous anode film, a layer of ScSZ (scandium-doped zirconia) powder is screen-printed, and the thickness is 20 μm dense solid Electrolyte film; then, on top of the layer of solid electrolyte, a layer of reaction barrier layer composed of CGO (gadolinium-doped cerium oxide) powder with a thickness of 7 μm is screen-printed. Using the above four layers as a half-cell, high-temperature co-sintering was carried out at 1250° C. for 4.5 hours under an inert atmosphere (99.99% high-purity Ar).

[0037] Next, a single cell is prepared.

[0038] After the half-cell was cooled nat...

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Abstract

Method for preparing the disclosed fuel cell includes steps: (1) using porous stainless steel as supportor; depositing porous anodal thin film, compact solid electrolyte film, and reaction barrier layer in sequence on the supportor to be as half cell; carrying out sintering under reducing atmosphere or inert atmosphere; (2) cooling after sintering, depositing active layer of cathode and contact layer of cathode on solid electrolyte film right along; carrying out sintering under air atmosphere so as to obtain cell; (3) dipping reforming catalyst for supportor of porous stainless steel so as to obtain fuel cell. Through the supportor, various fuel gases reformed to anodic gas rich in hydrogen enters into anode to carry out electrochemical reaction.

Description

technical field [0001] The invention relates to a preparation method in the technical field of fuel cells, in particular to a preparation method of a porous metal-supported low-temperature solid oxide fuel cell. Background technique [0002] Solid oxide fuel cell is an all-solid-state power generation device that converts chemical energy directly into electrical energy through electrochemical reactions. It does not need to go through the conversion process from fuel chemical energy → thermal energy → mechanical energy → electrical energy. It has many advantages, such as: No need to use precious metals as electrodes; wide applicability of fuels, that is, hydrogen, natural gas, coal gas, methanol, alcohol, gasoline, diesel and biomass gas, etc. can be used as fuels; high energy conversion efficiency; fast electrode reaction speed; It is only a gas-solid two-phase system, which eliminates the corrosion problem caused by liquid electrolytes; the high-quality exhaust gas discharg...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/10H01M8/1062
CPCY02E60/521Y02E60/50
Inventor 屠恒勇余晴春朱新坚
Owner SHANGHAI JIAO TONG UNIV
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