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Large size tubular solid oxide fuel cell and preparation thereof

A solid oxide, fuel cell technology, applied in solid electrolyte fuel cells, fuel cell components, and final product manufacturing, can solve problems such as bending deformation and reduction, and achieve low manufacturing costs, simple processes, and easy to master Effect

Inactive Publication Date: 2009-02-04
SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Aiming at the above-mentioned problems, the present invention proposes a simple and practical large-size tubular solid oxide fuel cell with good electrochemical performance and its preparation method; realizes co-impregnation and co-sintering of anode / electrolyte, reduces co-sintering The temperature improves the performance of the battery; by filling the green tube with combustible organic matter, the problem of bending and deformation of the large-size tubular solid oxide fuel cell during the sintering process is solved

Method used

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  • Large size tubular solid oxide fuel cell and preparation thereof
  • Large size tubular solid oxide fuel cell and preparation thereof
  • Large size tubular solid oxide fuel cell and preparation thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Example 1 Dip molding NiO-YSZ / SSZ / LSM-SSZ tubular solid oxide fuel cell

[0038] Take by weighing 100g3YSZ (3YSZ, 3mol% Y2O3 doped tetragonal polycrystalline ZrO2), 60g NiO, obtain supporting anode mixed powder; Take by weighing 50gSSZ (10mol% scandium oxide fully stable zirconia) electrolyte powder; Take by weighing 30gLSM20 (20mol% SrO-doped LaMnO3), 10gSSZ (10mol% scandium oxide fully stabilized zirconia) to obtain active cathode mixed powder. Mixed solvents of methyl ethyl ketone and ethanol were added respectively, about 6wt% triethanolamine (TEA) dispersant was added to the supporting anode, and about 2wt% triethanolamine dispersant was added to the electrolyte and active cathode respectively. Mixed by ball milling for 1 hour. Then add about 10wt% dibutyl phthalate and polyvinyl alcohol 200 two plasticizers and about 5wt% polyvinyl butyral binder for the supporting anode, and add about 6wt% ortho Dibutyl phthalate and polyvinyl alcohol 200 two plasticizers and a...

Embodiment 2

[0039] Example 2 Dip NiO-YSZ / NiO-SSZ / SSZ / LSM-SSZ Tubular Solid Oxide Fuel Cell

[0040] On the basis of Example 1, the active anode layer was added, that is, the active anode was impregnated once after the supporting anode was released from the mold, and then the electrolyte was impregnated after drying. The slurry of the active anode is prepared as follows: Weigh 50gSSZ (10% scandium oxide fully stabilized zirconia), and 30gNiO to obtain the active anode mixed powder; add methyl ethyl ketone and ethanol mixed solvent, add about 2wt% triethanolamine dispersant, Ball mill for 1 hour to mix; then add about 8wt% dibutyl phthalate and polyvinyl alcohol 200 plasticizers and about 3wt% polyvinyl butyral binder, and then ball mill for 2 hours to mix; After being sieved through a sieve and vacuum degassed, the active anode slurry is obtained.

Embodiment 3

[0041] Example 3 Dip NiO-YSZ / NiO-SSZ / SSZ / LSM-SSZ / LSM Tubular Solid Oxide Fuel Cell

[0042] On the basis of Example 2, the charging cathode layer was added, that is, the charging cathode was impregnated twice after the active cathode was impregnated, and after drying, the active cathode and the charging cathode were sintered at 1200° C. for 3 hours. The slurry preparation of the electricity collecting cathode is as follows: weigh 50g LSM20 (20mol% SrO-doped LaMnO3) powder; add butanone and ethanol mixed solvent, add about 2wt% triethanolamine dispersant, and ball mill for 1 hour to mix; Then add about 6wt% dibutyl phthalate and two kinds of plasticizers of polyvinyl alcohol 200 and about 3wt% polyvinyl butyral binder, and ball mill for 2 hours to mix; After vacuum degassing treatment, the cathode slurry for collecting electricity is obtained.

[0043] Battery Power Generation Experiment

[0044] The cathode side of the tubular SOFC uses a platinum grid for electricity collec...

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Abstract

The invention discloses a large-size tubular solid oxide fuel cell and a preparation method thereof, and the method comprises: powder material of each functional layer of a solid oxide fuel cell is respectively added with an organic solvent, a dispersant, an adhesive and a plasticizer, and fully ground to obtain a uniform support anode slurry, an active anode slurry, an electrolyte slurry, an active cathode slurry and an electricity-receiving cathode slurry. The outer surface of a mold is impregnated with the support anode layer by layer after the vacuum treatment; the support anode tube is filled with combustible organic matter after demoulding; the active anode and the electrolyte are impregnated to form a support anode / active anode / electrolyte composite membrane; then the external side of the electrolyte is impregnated with the active cathode and the electricity-receiving cathode after sub-temperature sintering, that is, after pre-burning and high-temperature sintering; and the large-size tubular solid oxide fuel cell is obtained after sintering. The invention has advantages of simple process, low manufacturing cost, achieving good-performance large-size tubular solid oxide fuel cell and good prospect of industrialization.

Description

technical field [0001] The invention relates to a large-size tubular solid oxide fuel cell and a preparation method thereof, belonging to the technical field of fuel cell manufacturing. Background technique [0002] Solid oxide fuel cell (SOFC) is a high-efficiency all-solid-state electrochemical energy conversion device that directly converts chemical energy into electrical energy. Three generations of generators. The solid oxide fuel cell has the advantages of its all-solid-state structure, no corrosion, no leakage, high efficiency, modular design, and wide range of fuel applications, and it is suitable for combined heat and power (efficiency can reach 70%-80%) It has become a hot spot and focus in fuel cell technology. Solid oxide fuel cells mainly have two structures, flat plate and tubular. Compared with flat solid oxide fuel cells, the advantages of tubular solid oxide fuel cells are easy sealing, strong thermal shock resistance, and rapid response to loads. , the s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/10H01M8/02
CPCY02E60/521Y02E60/50Y02P70/50
Inventor 刘仁柱王绍荣王振荣胡强李军良
Owner SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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