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Preparation method of metal support plate for fuel cell

A metal support, fuel cell technology, used in fuel cells, battery electrodes, circuits, etc., can solve the problems of uneven pore size, easy deformation, unstable gas flow, etc., and achieve high cost, small deformation, and light weight.

Pending Publication Date: 2022-03-15
NBTM NEW MATERIALS GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The metal support plate made of the above metal substrate is prone to deformation, uneven pore size, unstable gas flow and other defects

Method used

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  • Preparation method of metal support plate for fuel cell
  • Preparation method of metal support plate for fuel cell
  • Preparation method of metal support plate for fuel cell

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] like Figure 2 to Figure 4 Shown is the first preferred embodiment of the present invention.

[0035] The preparation method of the metal support plate for the fuel cell in this embodiment includes the following steps in sequence:

[0036] 1) Use a wire mesh with a mesh number of 700, see figure 2 As shown, the wire mesh is made of 304L austenitic stainless steel; in terms of mass percentage, the stainless steel includes the following components: C: 0.015%, Cr: 19.2%, Mn: 0.6%, Si: 0.8%, Ni: 10.3 %, iron: balance;

[0037] 2) Folding the wire mesh in step 1) to obtain a multilayer wire mesh, the number of folded layers is 10 layers;

[0038]3) Roll the wire mesh layer in step 2), then put it into a vacuum sintering furnace, sinter at a vacuum degree of 0.1 Pa, a sintering temperature of 1300° C., and a sintering time of 60 minutes, and take out the multi-layer after sintering and cooling. wire mesh;

[0039] 4) Cut the sintered multi-layer wire mesh into a metal s...

Embodiment 2

[0046] The difference between this embodiment and the above-mentioned Embodiment 1 is only:

[0047] The material of the metal wire mesh selected in step 1) is different, specifically, 430L ferritic stainless steel wire mesh is selected, and the mesh number of the wire mesh is 700 meshes; according to the mass percentage, the stainless steel wire mesh includes the following components: including The following components: C: 0.010%, Cr: 17.4%, Mn: 0.8%, Si: 0.5%, Iron: balance;

[0048] In step 2), the wire mesh is stacked, and the wire mesh is stacked in 10 layers, placed on the corundum board, and then the corundum board of the same size covers the stacked wire mesh, and the corundum board (ceramic board) No heavy objects are placed;

[0049] Step 3) Put the above-mentioned ceramic plate and wire mesh together into a push-boat sintering furnace, and sinter in high-purity hydrogen with a dew point lower than -40°C, at a sintering temperature of 1320°C and a sintering time of ...

Embodiment 3

[0055] The difference between this embodiment and the above-mentioned embodiment 2 is only: the material of the metal wire mesh selected in step 1) is different, specifically, FeCrAl heat-resistant steel wire mesh is selected, and the mesh number of the wire mesh is 325 meshes, and the aforementioned heat-resistant steel wire mesh is used. The net, in terms of mass percentage, includes the following components: C: 0.08%, Cr: 18.7%, Al: 2.8%, Mn: 0.4%, Si: 1.1%, iron: balance;

[0056] Step 2) The above-mentioned metal wire mesh is in the form of stacking, stack the metal wire mesh in 6 layers, place it on the corundum board, and then cover the stacked wire mesh with the corundum board of the same size, on the corundum board (ceramic board) Place a 2kg weight;

[0057] Step 3) the sintering temperature is 1340°C, and the sintering time is 50min;

[0058] Step 4) After cutting, the size of the obtained metal substrate is 110mm×110mm×0.53mm.

[0059] The aforementioned anode sl...

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Abstract

The invention relates to a preparation method of a metal support plate for a fuel cell. The preparation method sequentially comprises the following steps: 1) selecting a metal wire mesh; and 2) folding or stacking the silk screen in the step 1). 3) rolling or pressing the folded or stacked silk screen, and then sintering; and 4) cutting the sintered multi-layer silk screen. 5) forming an anode layer on the upper surface of the metal substrate; 6) forming an electrolyte coating on the upper surface of the anode layer; and 7) forming a cathode layer on the upper surface of the electrolyte coating so as to prepare the metal support plate. The multi-layer wire mesh formed by folding or stacking the metal wire mesh is used as the metal connecting plate, so that the finally prepared metal supporting plate is high in strength and small in deformation.

Description

technical field [0001] The invention belongs to the technical field of fuel cells, and in particular relates to a method for preparing a metal support plate for a fuel cell. Background technique [0002] The solid oxide fuel cell is an ideal fuel cell, which not only has the advantages of high efficiency and environmental friendliness of the fuel cell, but also has the following outstanding advantages: (1) The solid oxide fuel cell is an all-solid structure, and there is no liquid electrolyte band Corrosion problems and electrolyte loss problems in the future are expected to achieve long-life operation. (2) The operating temperature of the solid oxide fuel cell is 800-1000°C. Not only does the electrocatalyst not need to use noble metals, but it can also directly use natural gas, coal gas and hydrocarbons as fuel, which simplifies the fuel cell system. (3) Solid oxide fuel cells discharge high-temperature waste heat and can form a combined cycle with gas turbines or steam t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/0271H01M4/88
CPCH01M8/0271H01M4/8803H01M4/8828H01M4/8882Y02E60/50Y02P70/50
Inventor 包崇玺陈志东颜巍巍童璐佳
Owner NBTM NEW MATERIALS GRP
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