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Producing method for a high strength ultra-thin anode supporting type solid oxide fuel cell

An anode-supported, solid oxide technology, used in solid electrolyte fuel cells, fuel cell components, battery electrodes, etc., can solve problems such as high cost, improve mechanical strength, easy control of conditions, and good catalytic performance. Effect

Active Publication Date: 2009-04-01
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the high cost of this type of fuel cell system at that time, it was only used in special occasions such as aerospace and military

Method used

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  • Producing method for a high strength ultra-thin anode supporting type solid oxide fuel cell
  • Producing method for a high strength ultra-thin anode supporting type solid oxide fuel cell
  • Producing method for a high strength ultra-thin anode supporting type solid oxide fuel cell

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] The green body of the anode support is prepared by tape casting. The experimental materials are NiO powder and 3% (mol) YSZ powder. Weigh 268.8 grams of NiO and 211.2 grams of 3% (mol) YSZ powder (60% of the total mass of the slurry, wherein YSZ: NiO is 0.44:0.56) and mix evenly. Then add ethanol and 2-butanone mass ratio and be 30% and 70% mixed solvent 280 grams (35% of slurry total mass) and 40 grams of polyvinyl butyral (5% of slurry total mass), will Put the above mixture into a 1000ml ball mill tank, then put in a zirconia ball milling medium with three times the mass of the powder, and then ball mill at a speed of 250rpm for 24 hours, and degas the slurry on a small defoamer for 80 minutes to obtain a cast slurry (The distance between the casting knife edge and the support plate is controlled at 1 mm), and the green body of the anode support body with a thickness of 600 μm can be prepared by the casting machine.

[0049] The active anode was prepared by slurry a...

Embodiment 2

[0056] The green body of the anode support is prepared by tape casting. The experimental materials are NiO powder, alumina powder and 3% (mol) YSZ powder, weighing 162.4 grams of NiO and 127.6 grams of 3% (mol) YSZ powder (29% of the total mass of the slurry, wherein YSZ: NiO is 0.44: 0.56 ) and 10 grams of aluminum oxide (1% of the total mass of the slurry) are mixed uniformly, and then adding ethanol and 2-butanone mass ratio is 550 grams of mixed solvents (55% of the total mass of the slurry) and 150% of the mixed solvent of 30% and 70%. gram of polyvinyl butyral (15% of the total mass of the slurry), the above mixture is put into a 1000ml ball mill jar, then put into a zirconia ball mill medium with three times the quality of the powder, and then ball mill for 24 hours at 280rpm , the slurry was defoamed on a small defoaming machine for 120 minutes to obtain casting slurry (the distance between the casting blade and the support plate was controlled at 1 mm), and the green ...

Embodiment 3

[0063]The green body of the anode support is prepared by tape casting. The experimental materials are NiO powder, alumina powder and 3% (mol) YSZ powder, weighing 211.68 grams of NiO, 166.32 grams of 3% (mol) YSZ powder (42% of the total mass of the slurry, wherein YSZ: NiO is 0.44: 0.56 ) and 27 grams of aluminum oxide (3% of the total mass of the slurry) are mixed homogeneously, and adding ethanol and 2-butanone mass ratio is 405 grams of mixed solvents (45% of the total mass of the slurry) of 30% and 70% and poly Vinyl butyral 90 grams (10% of the total mass of the slurry), the above mixture is put into a 1000ml ball mill jar, and then put into a zirconia ball mill medium with three times the mass of the powder, and then ball milled at 360rpm for 24 hours , the slurry was defoamed on a small defoaming machine for 160 minutes to obtain a casting slurry (the distance between the casting knife edge and the support plate was controlled at 1 mm), and a green anode support body w...

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Abstract

The invention discloses a method for preparing a high-strength ultra-thin anode supported solid oxide fuel cell, the method comprises: the slurry of an anode support is firstly used for preparing an anode support green compact with a certain thickness by a tape casting method, then an active anode slurry and an electrolyte slurry are sprayed onto the anode support green compact by using an air direct spraying method, the green compact of the composite material is further increased to a certain temperature by a certain heating rate for the calcination, then a half cell is obtained, then the cathode slurry is finally sprayed on the half cell by the air spraying method, and a single cell is obtained by drying, calcinating and other steps. The obtained flat-plate single cell has the advantages of high mechanical strength of the anode support, even thin active anode, conditional method, easy control, simple process, easy industrial enlargement, etc.

Description

technical field [0001] The invention relates to a preparation method of a solid oxide fuel cell. Background technique [0002] A fuel cell is an electrochemical energy conversion device that directly converts chemical energy into electrical energy. In principle, fuel cells are not limited by the Carnot cycle, and compared with traditional heat engines, they have high energy conversion efficiency (up to 50% to 60%) and environmental friendliness (that is, very low NO x , SO 2 and noise emission) and other advantages. Long before the advent of the internal combustion engine (1842), William Grove in England demonstrated the world's first dilute sulfuric acid electrolyte, H 2 , O 2 An electrochemical power conversion device for fuel. However, until the 1950s, due to the backwardness of the kinetic theory of the electrode process and the advent and rapid development of the internal combustion engine, a relatively simple energy conversion device, in the late 19th century, the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/10H01M8/02H01M4/88
CPCY02E60/522Y02E60/50Y02P70/50
Inventor 王蔚国薛业建李华民
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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