Proton exchange membrane fuel cell structure applicable to high temperature operation

A proton exchange membrane and fuel cell technology, applied in solid electrolyte fuel cells, fuel cells, fuel cell components, etc., can solve the problems of liquid water remaining and increasing system complexity, achieve volume reduction, and facilitate mass production , The effect of reducing processing costs

Inactive Publication Date: 2008-07-02
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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Problems solved by technology

In order to eliminate the influence of water when the conventional system is shut down at low temperature, it needs to be purged, which increases the complexity of the system, and part of the liquid water in the membrane will remain
[0004] At present, the research on high-temperature membranes has attracted widespread attention in the world, but the structure of proton exchange

Method used

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  • Proton exchange membrane fuel cell structure applicable to high temperature operation
  • Proton exchange membrane fuel cell structure applicable to high temperature operation
  • Proton exchange membrane fuel cell structure applicable to high temperature operation

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Embodiment Construction

[0017] In order to better understand the technical solution of the present invention, the structure of the membrane electrode bipolar plate assembly according to the present invention will be further described below in conjunction with the accompanying drawings.

[0018] Such as figure 1 Shown:

[0019] Carbon felt, stainless steel fiber felt, titanium foam, metal fine wire mesh, etc. or specially designed porous microchannels are used as the flow field and the diffusion layer (fuel flow field 2', oxidant flow field 6'), attached to the thin metal separator On the separator (thin metal separator 1'), proton exchange membrane 4 with electrodes (anode electrode 3, cathode electrode 5) constitutes a membrane electrode bipolar plate assembly. It forms a single battery with the cooling cavity 8 .

[0020] Due to the simplified structure, the thickness is greatly reduced. The comparison of new structure of the present invention and conventional structure is shown in the table bel...

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Abstract

The invention relates to a fuel cell, in particular a structure of the fuel cell having a proton exchange membrane applicable to high temperature operation, which comprises a fuel flow field, a CCM, an oxidizer flow field, and thin metal separating boards arranged on two sides of the oxidizer flow field. Inner sides of the thin metal separating boards are provided with poriferous layers of conductive material which are taken as flow fields and diffusing layers. The structure of the invention can simplify the structure of the fuel cell and greatly reduce the size.

Description

technical field [0001] The present invention relates to a fuel cell, in particular to a structure of a proton exchange membrane fuel cell suitable for high temperature operation, that is, a "membrane electrode bipolar plate assembly (Membrane Electrode Bipolarplate Assembly, MEBA)". Background technique [0002] A fuel cell is an isothermal power generation device that directly converts chemical energy into electrical energy in an electrochemical manner. It does not go through a heat engine process, so it is not limited by the Carnot cycle, has high energy conversion efficiency, and is environmentally friendly. Due to these outstanding advantages, the research and development of fuel cell technology has attracted much attention from governments and large companies in recent years, and it is considered to be the preferred clean and efficient power generation method in the 21st century. Among them, high-temperature proton exchange membrane fuel cells have recently attracted w...

Claims

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Application Information

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IPC IPC(8): H01M8/02H01M4/86H01M8/12H01M8/0258H01M8/1213
CPCY02E60/521Y02E60/525Y02E60/50
Inventor 侯明孙立言燕希强林业发姜玉玉明平文衣宝廉
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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