Preparation method for anode support layer of solid oxide fuel cell

A technology of anode support and anode support, which is applied in the direction of solid electrolyte fuel cells, fuel cell additives, and final product manufacturing. The effect of simple method

Inactive Publication Date: 2012-03-28
JINGDEZHEN CERAMIC INSTITUTE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] In order to solve the problem of the optimal thickness of the existing anode support type SOFC anode support layer and functional layer and the strength of the single cell, the invention provides a preparation method of the anode support layer

Method used

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  • Preparation method for anode support layer of solid oxide fuel cell
  • Preparation method for anode support layer of solid oxide fuel cell

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Experimental program
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Effect test

Embodiment 1

[0037] Weigh 28.46g NH 4 Al(SO 4 ) 2 , add 1L of distilled water to form an aqueous solution with a concentration of 0.12mol / L, stir evenly, and use a spray gun to spray into 1.6mol / L NH3 containing 2% polyethylene glycol with a mass ratio of 2%. 4 HCO 3 In aqueous solution, NH 4 Al(OH) 2 CO 3 precipitation.

Embodiment 2

[0039] Will NH 4 Al(OH) 2 CO 3 The precipitate was repeatedly washed with distilled water and centrifuged to remove impurity ions. Finally, put the precipitate into an oven at a constant temperature of 100°C for drying. The dried sample was ground into powder in an agate mortar, and calcined in a high-temperature furnace at 1100°C to obtain ultrafine Al 2 o 3 Powder.

Embodiment 3

[0041] Accurately weigh 55gNiO, 5gMgO, 15g starch, 25g superfine Al 2 o 3 Powder, 0.3g acicular Al 2 o 3 , 2 g of polyvinylpyrrolidone and 20 g of distilled water were placed in an ultrasonic oscillator for 2 hours to disperse evenly; After hours, the obtained anode support layer slurry was placed in an oven at 90°C and dried at a constant temperature, and then taken out and ground into powder to obtain an anode support layer powder.

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Abstract

The invention relates to a preparation method for an anode support layer of an anode support type solid oxide fuel cell. According to the invention, the anode is in gradient design and divided into a functional layer and a support layer; the anode functional layer and an electrolyte layer both with about 20 microns in thickness are made through a tape casting method; in order to ensure the battery strength, a superfine A12O3 with less than 200nm particle diameter is made, and a Nio, a sintering assistant MgO and a needle-shaped A12O3 are added at the same time, so as to form an anode support layer powder body which is compressed together with the functional layer and the electrolyte layer, thereby obtaining an anode support type/film layer electrolyte composite material half cell. The method has a simple process and a low cost, and is suitable for industrialized production, and accordingly the mono-cell made through the method has high strength and favorable electrochemical property.

Description

technical field [0001] The invention carries out gradient design on the anode and subdivides it into a functional layer and a support layer, relates to a preparation method of the anode support layer, and belongs to the field of flat anode-supported solid oxide fuel cells (SOFC). Background technique [0002] With the decrease of petrochemical resources and the call for ecological environment protection, countries around the world have invested a lot of manpower and financial resources to research new energy sources. Among them, SOFC is considered to be the most efficient due to its high power generation efficiency, no need for precious metals as catalysts, and low pollution. Efficient power generation systems, which can be used in power generation, cogeneration, transportation, space and aerospace and many other fields, are called green energy in the 21st century. The current research hotspot is the anode-supported electrolyte film battery, which can effectively reduce the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/04H01M8/10
CPCY02E60/521Y02E60/50Y02P70/50
Inventor 吴也凡苏蕙
Owner JINGDEZHEN CERAMIC INSTITUTE
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