Molten carbonate fuel cell sealing structure and preparation method and application thereof

A technology of molten carbonate and fuel cells, which is applied in the direction of molten electrolyte fuel cells, fuel cells, and fuel cell components, etc., can solve the problems of poor sealing and high stack density, achieve good sealing and improve power. Density, the effect of reducing the risk of leakage

Pending Publication Date: 2021-10-22
HUANENG POWER INT INC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Therefore, the technical problem to be solved by the present invention is to overcome defects such as high stack density and poor sealing performance caused by placing sealing materials in the bipolar structure of molten carbonate batteries in the prior art, thereby providing a molten carbonate battery Salt fuel cell sealing structure and its preparation method and application

Method used

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  • Molten carbonate fuel cell sealing structure and preparation method and application thereof
  • Molten carbonate fuel cell sealing structure and preparation method and application thereof
  • Molten carbonate fuel cell sealing structure and preparation method and application thereof

Examples

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Effect test

Embodiment 1

[0050] This embodiment provides a sealing structure for a molten carbonate fuel cell, which is denoted as A, specifically as figure 1 As shown, according to the order of the diagonal size from large to small, it includes the electrode 1, the punching plate 2 and the flow field plate 3 which are arranged in sequence; the punching plate 2 is arranged between the flow field plate 3 and the electrode 1 to play The function of supporting the electrode and collecting current; the electrode 1, the punching plate 2 and the flow field plate 3 are rectangular.

[0051] Based on the diagonal line, the size of the electrode is 819mm, the size of the punching plate is 778mm, and the size of the flow field plate is 696mm; the thickness of the electrode is 0.8mm, the thickness of the punching plate is 0.6mm, and the thickness of the flow field plate is 2mm.

[0052] The perforated plate is made of stainless steel, with a number of round holes for filling electrolyte. The porosity of the per...

Embodiment 2

[0058] This embodiment provides a sealing structure for a molten carbonate fuel cell, which is denoted as B, and includes an electrode 1, a punching plate 2 and a flow field plate 3 that are stacked in sequence; the punching plate 2 is arranged on the flow field plate The space between 3 and electrode 1 can support the electrode and collect current; the electrode 1, punching plate 2 and flow field plate 3 are rectangular.

[0059] Based on the diagonal line, the size of the electrode is 819mm, the size of the punching plate is 778mm, and the size of the flow field plate is 696mm; the thickness of the electrode is 0.8mm, the thickness of the punching plate is 0.6mm, and the thickness of the flow field plate is 2mm.

[0060] The perforated plate is made of stainless steel, with a number of round holes for filling electrolyte. The porosity of the perforated plate is 60%; the flow field plate is made of stainless steel, and there are flow channels in the flow field plate, and the ...

Embodiment 3

[0066] This embodiment provides a sealing structure for a molten carbonate fuel cell, the sealing structure is denoted as C, and includes an electrode 1, a punching plate 2 and a flow field plate 3 that are stacked in sequence; the punching plate 2 is arranged on the flow field plate The space between 3 and electrode 1 can support the electrode and collect current; the electrode 1, punching plate 2 and flow field plate 3 are rectangular.

[0067] Based on the diagonal line, the size of the electrode is 820mm, the size of the punching plate is 697mm, and the size of the flow field plate is 615mm; the thickness of the electrode is 1mm, the thickness of the punching plate is 1mm, and the thickness of the flow field plate is 2mm .

[0068] The perforated plate is made of stainless steel, with a number of round holes for filling electrolyte. The porosity of the perforated plate is 60%; the flow field plate is made of stainless steel, and there are flow channels in the flow field pl...

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Abstract

The invention belongs to the technical field of fuel cell preparation, and particularly relates to a molten carbonate fuel cell sealing structure and a preparation method and application thereof. The molten carbonate fuel cell sealing structure comprises an electrode, a punched plate and a flow field plate which are sequentially arranged in a stacked manner according to the descending order of the sizes of diagonal lines. The molten carbonate fuel cell sealing structure can have high sealing performance under the condition that a sealing piece is not additionally arranged, the leakage risk is reduced, meanwhile, when the molten carbonate fuel cell sealing structure is applied to cell preparation, the distance between electrodes can be reduced, and the volume power density of the cell can be increased; in addition, the weight of the molten carbonate fuel cell sealing structure can be reduced without additionally arranging a sealing element, and the power density is further improved.

Description

technical field [0001] The invention belongs to the technical field of fuel cell preparation, and specifically relates to a sealing structure of a molten carbonate fuel cell and its preparation method and application; more specifically, it relates to a sealing structure of a molten carbonate fuel cell and a preparation method thereof, a A bipolar plate including the sealing structure of the molten carbonate fuel cell, a molten carbonate fuel cell including the bipolar plate. Background technique [0002] Molten carbonate fuel cell (MCFC) is a high-temperature fuel cell that works at 650°C. It does not require noble metals as catalysts, has a wide range of fuel sources, low noise, basically achieves zero emissions of pollutants, high power generation efficiency, and can realize thermoelectricity. Combined power supply and other advantages are suitable for hundreds of kilowatts to megawatts distributed power stations or fixed power stations, and have good development prospects...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/0276H01M8/0286H01M8/0202H01M8/0258H01M8/0263H01M8/14
CPCH01M8/0276H01M8/0286H01M8/0202H01M8/0258H01M8/0263H01M8/14H01M2008/147Y02E60/50
Inventor 王菊卢成壮张瑞云程健杨冠军黄华白发琪
Owner HUANENG POWER INT INC
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