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Fuel battery

A fuel cell and collector plate technology, applied in the direction of fuel cells, fuel cell additives, fuel cell components, etc., can solve the problems of lowering the temperature of fuel cells, reducing the power generation efficiency of fuel cells, and water cannot be excluded

Inactive Publication Date: 2008-09-10
CORETRONIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the reaction temperature of the fuel cell is usually higher than normal temperature, air convection and water evaporation will reduce the temperature of the fuel cell, which will reduce the power generation efficiency of the fuel cell.
In addition, the method of using air convection to evaporate water will also prevent some of the water accumulated in the cathode layer from being discharged due to the uneven air flow field generated by air convection.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0038] Please refer to figure 1 and figure 2 The fuel cell 100 a of the first embodiment of the present invention includes a membrane electrode assembly 110 , an anode collector plate 120 , a cathode collector plate 130 and a water-conducting layer 140 . The MEA 110 includes an anode layer 112 , a cathode layer 114 and an electrolyte layer 116 disposed between the anode layer 112 and the cathode layer 114 . Wherein, the anode collector plate 120 is arranged in contact with the anode layer 112, and the cathode collector plate 130 is arranged in contact with the cathode layer 114, and the membrane electrode assembly 110 is placed between the anode collector plate 120 and the cathode collector plate 130, and the cathode collector plate 130 and has a plurality of first openings 132 . The water-conducting layer 140 is attached to the cathode collector plate 130, and includes a material 142 with a capillary structure and a plurality of second openings 144, and the second openings...

no. 2 example

[0046] Please refer to Figure 3A and Figure 3B , the structure of the fuel cell 100b of the second embodiment of the present invention is roughly the same as figure 1 and figure 2 The fuel cell 100a is the same as the two, and the difference between the two is that the fuel cell 100b further includes a cathode channel plate 170 . The cathode flow channel plate 170 is, for example, in contact with the cathode collector plate 130, and is located on the side of the cathode collector plate 130 facing away from the MEA 110, while the water-conducting layer 140 is, for example, attached to the cathode flow channel plate 170, and is located on the cathode collector plate 130. between the collector plate 130 and the cathode channel plate 170 .

[0047] Similarly, the water-conducting layer 140 includes, for example, a material with a capillary structure (not shown) and a plurality of second openings (not shown), and the second openings correspond to the first openings of the cat...

no. 3 example

[0051] Please refer to Figure 4 , the structure of the fuel cell 100c of the third embodiment of the present invention is roughly the same as figure 1 and figure 2 The fuel cells 100a are the same, but the difference lies in the structure of the cathode collector plate 130 . In this embodiment, the surface of the cathode collector plate 130 further has a water-conducting microchannel 134, and the water produced in the cathode layer 114 of the membrane electrode assembly 110 after the chemical reaction is, for example, accumulated on the surface of the cathode collector plate 130 In the water-guiding micro-channel 134. Then, the water accumulated in the water-conducting micro-channel 134 will be discharged from the surface of the cathode collector plate 130 along the water-conducting micro-channel 134 by gravity.

[0052] The cathode collector plate 130, for example, includes the material 142 with a capillary structure in the first embodiment (shown in figure 1 and figu...

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Abstract

The invention discloses a fuel cell which comprises a membrane electrode unit, an anode collecting plate, a cathode collecting and a water guiding layer. The membrane electrode unit consists of an anode layer, a cathode layer and an electrolyte layer arranged between the anode layer and the cathode layer. The anode collecting plate contacts the anode layer, and the cathode collecting plate contacts the cathode layer, thus ensuring that the membrane electrode unit is arranged between the anode collecting plate and the cathode collecting plate and are provided with a plurality of first openings; the water guiding layer is attached to the cathode collecting plate and comprises a material with capillary structure and a plurality of second openings corresponding to the first openings on the cathode collecting plate.

Description

【Technical field】 [0001] The present invention relates to a fuel cell, and in particular to a fuel cell using a water-conducting layer to remove water accumulated in the cathode layer after chemical reactions. 【Background technique】 [0002] With the advancement of technology, the consumption of traditional energy such as coal, oil and natural gas continues to increase. Due to the limited stock of natural energy, countries are currently developing new alternative energy to replace traditional energy, and fuel cells are an important and practical option. [0003] In simple terms, a fuel cell is basically a power generating device that uses the reverse reaction of water electrolysis to convert chemical energy into electrical energy. Currently common fuel cells include phosphoric acid fuel cell (PAFC), solid oxide fuel cell (SOFC) or proton exchange membrane fuel cell (PEMFC). [0004] Taking a proton exchange membrane fuel cell as an example, it is mainly composed of a membr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/10H01M8/02H01M8/04H01M8/0258H01M8/04828H01M8/1004
CPCY02E60/521Y02E60/50
Inventor 李璟柏黄金树王正许年辉
Owner CORETRONIC