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Method for reducing deformation of solid oxide fuel cell electrolyte film

A solid oxide and electrolyte membrane technology, applied in solid electrolyte fuel cells, fuel cell components, fuel cells, etc., can solve problems such as co-firing deformation of electrolyte membranes and anodes

Inactive Publication Date: 2006-12-13
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a method for reducing the deformation of the solid oxide fuel cell electrolyte membrane in order to solve the problem of severe deformation of the electrolyte membrane and the anode co-firing

Method used

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specific Embodiment approach 1

[0004] Embodiment 1: The method for reducing the deformation of the solid oxide fuel cell electrolyte membrane in this embodiment is realized by the following steps: (1) Preparation of the anode support body: NiO powder, starch, Dehydrated alcohol and YSZ powder containing 8mol% yttrium oxide are put into a planetary ball mill with agate balls, the weight ratio of agate balls to the mixture is 2-5:1, and the ball milling speed is 150-250r / min. Ball mill for 4-10 hours, after drying, press under the condition of 250-350MPa to form an anode sheet with a thickness of 0.4-0.5mm, and then put the anode sheet in an environment of 950-1050°C and sinter for 1.8-2.2 hours, which is the anode support body; (2) Preparation of YSZ electrolyte slurry: put YSZ powder containing 8mol% yttrium oxide and a particle size of 0.05-1.0 μm into a ball mill with agate balls for grinding, and then mix the ball-milled YSZ fine powder with an organic bond (3) Printing of YSZ electrolyte membrane: use a...

specific Embodiment approach 2

[0006] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the particle size of the YSZ powder containing 8 mol% yttrium oxide in step (1) is 0.5-2.0 μm. Other steps are the same as those in Embodiment 1.

[0007] The YSZ powder selected in this embodiment has a larger particle size to ensure that the anode support forms a good YSZ skeleton during the sintering process and avoid sintering and agglomeration of NiO.

specific Embodiment approach 3

[0008] Specific embodiment three: the difference between this embodiment and embodiment one is: the organic binder is the mixed solution of ethyl cellulose and terpineol in step (2), wherein ethyl cellulose accounts for 4% of the mixed solution volume ~ 6%, terpineol accounts for 94 ~ 96% of the volume of the mixed solution. Other steps are the same as those in Embodiment 1.

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Abstract

The invention discloses a deformation reducing method of electrolytic film, which comprises the following steps: (1) preparing anode support bulk; (2) producing YSZ electrolytic slurry; (3) printing YSZ electrolytic film; (4) preparing YSZ piece; (5) sintering YSZ electrode film to produce solid oxide combustion battery anode support typed YSZ electrolytic film at 1.28 mm thickness. The invention is difficult to deform, which makes electrolytic film more fine and close.

Description

technical field [0001] The invention relates to a method for reducing deformation of an electrolyte membrane. Background technique [0002] Solid Oxide Fuel Cell (Solid Oxide Fuel Cell, SOFC for short) is an all-solid-state energy conversion device that generates electricity by electrochemically combining fuel gas and oxidant gas through an ion-conducting solid oxide (electrolyte). An emerging technology that developed rapidly in the 1980s. The thinning of the electrolyte can reduce the operating temperature of the SOFC and improve the overall performance of the battery. However, at present, the electrolyte membrane is severely deformed when it is co-fired with the anode, which is not conducive to the preparation of the battery cathode and the packaging of the battery. Although, S.H.Lee et al. in Key.Eng.Mat.321[8]264-268(2004) and P.Z.Cai et al. in J.Am.Ceram.Soc.80[8]1929-39(1997) It is pointed out in the literature that the causes of severe deformation of the electrolyt...

Claims

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Application Information

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IPC IPC(8): H01M8/10H01M8/02H01M8/1016
CPCY02E60/521Y02E60/50
Inventor 葛晓东黄喜强吕喆张耀辉苏文辉辛显双徐加焕赵莉君孙薇薇
Owner HARBIN INST OF TECH
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