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Integrated structure, battery/electrolytic cell and preparation method of battery stack

A technology of solid oxides and blocks, which is applied to fuel cell components, solid electrolyte fuel cells, fuel cells, etc., to achieve the effects of reducing sealing workload, overcoming the complexity of processing technology, and reducing manufacturing costs

Active Publication Date: 2020-07-10
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Likewise, solid oxide electrolytic cells have similar sealing issues

Method used

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  • Integrated structure, battery/electrolytic cell and preparation method of battery stack
  • Integrated structure, battery/electrolytic cell and preparation method of battery stack
  • Integrated structure, battery/electrolytic cell and preparation method of battery stack

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preparation example Construction

[0097] In specific implementation, the preparation method for preparing the first pore-forming agent block and the second pore-forming agent block includes: mold pressing or screen printing.

[0098] In a second aspect, the present invention provides a method for preparing a solid oxide fuel cell / electrolyzer, the method comprising:

[0099] Using the method described in the first aspect above, preparing the integrated structure of the connector and the support body;

[0100] coating the anode material on the surface layer region of the integrated structure of the connector and the support body to obtain an anode layer;

[0101] coating an electrolyte material on the surface of the anode layer to obtain an electrolyte layer;

[0102] coating the cathode material on the surface of the electrolyte layer to obtain a solid oxide fuel cell / electrolyzer;

[0103] the second pore former mass is removed to form an anode gas channel through which anode gas flows into the anode;

[0...

Embodiment 1

[0114] By pre-preparing with such as Figure 4 and Figure 5 The mold corresponding to the ammonium bicarbonate block of shown runner shape adopts the method for pressing and has such as Figure 4 and Figure 5 The ammonium bicarbonate block of two kinds of runner shapes, the ammonium bicarbonate block is the ammonium bicarbonate block of 8cm╳8cm. The iron-chromium alloy metal powder is mixed with the ammonium bicarbonate to obtain the precursor powder of the porous metal support body, wherein the content of the ammonium bicarbonate is 20%wt.

[0115] will be like Figure 4 The ammonium bicarbonate block in the shape of a runner is placed on the bottom of the mold of 10cm╳10cm, and the iron-chromium alloy metal powder with a particle size of about 20μm is laid on such as Figure 4 shown above the ammonium bicarbonate with runner shape and completely covered with iron chromium alloy metal powder as Figure 4 Shown have the ammonium bicarbonate of runner shape (comprising t...

Embodiment 2

[0119] Pure chromium metal powder was mixed with ammonium bicarbonate to obtain porous metal support precursor powder, wherein the content of ammonium bicarbonate was 9%wt. The ammonium bicarbonate block is the ammonium bicarbonate block of 8cm x 16cm in the present embodiment.

[0120] prepared with such Figure 4 The pore-forming agent (ammonium bicarbonate) in the shape of the flow channel is placed on the bottom of the mold of 10cm╳20cm, and the pure chromium metal powder with a particle size of about 40 μm is laid on the pore-forming agent (ammonium bicarbonate) in the shape of the flow channel on, and overwrite it, then will have as Figure 5 The channel-shaped pore-forming agent (ammonium bicarbonate) is placed on it and the pure chromium metal powder is laid, and then the precursor powder of the porous metal area is laid on the uppermost layer, and finally the metal powder is used to fill the mold and the porous metal The space around the domain precursor powder layer ...

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Abstract

The invention provides an integrated structure, a battery / electrolytic cell and a preparation method of a battery stack. The method comprises the following steps: designing pore-forming agents with different flow channel shapes, paving powder layer by layer, and preparing a self-sealing connecting body and supporting body integrated structure by utilizing a compression molding and powder metallurgy preparation method. And an anode, an electrolyte and a cathode are sequentially prepared on the metal porous area of the integrated structure of the supporting body and the connecting body in a tapecasting, wet method or spraying mode, so that the anode covers the metal porous area, the electrolyte covers the anode area, and finally, the self-sealing single battery / electrolytic tank is prepared. Through the preparation method provided by the invention, the manufacturing process of the cell stack is effectively simplified, the sealing workload of the cell stack is reduced, the manufacturingcost of the cell is favorably reduced, and the commercial popularization of the solid oxide cell is facilitated.

Description

technical field [0001] The invention relates to the field of energy technology, in particular to an integrated structure, a battery / electrolytic cell and a method for preparing a battery stack. Background technique [0002] Solid oxide fuel cell (SOFC for short) is an energy conversion device, which directly converts the chemical energy of fuel into electrical energy, and has the advantages of high power generation efficiency, no environmental pollution, and no noise. A traditional SOFC single cell consists of an anode, an electrolyte, and a cathode. According to the type of support that provides battery strength, it can be divided into anode-supported SOFC, cathode-supported SOFC, and electrolyte-supported SOFC. Support is provided by thickening one of the components (about 1mm). Due to the inherent brittleness of ceramic materials, the mechanical strength of the above-mentioned supported SOFC is still not high, and thickening the electrode or electrolyte components will l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/0206H01M8/0258H01M8/0271H01M8/12H01M8/2404H01M8/2425H01M8/2457B22F7/02B22F3/11
CPCB22F3/1121B22F7/004H01M8/0206H01M8/0258H01M8/0271H01M8/12H01M8/2425H01M2008/1293H01M8/2404H01M8/2457Y02E60/50
Inventor 李成新李甲鸿康思远李长久张山林
Owner XI AN JIAOTONG UNIV
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