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Preparing method for composite two-pole plate for proton exchange film fuel cell

A proton exchange membrane and fuel cell technology, applied in battery electrodes, circuits, electrical components, etc., can solve the problems of not being suitable for mass production of products, high unit density, and low supply, and achieve good conductivity, low manufacturing cost, and The effect of high flatness and parallelism

Inactive Publication Date: 2005-10-05
ZHEJIANG UNIV
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AI Technical Summary

Problems solved by technology

However, metal materials also have defects, such as high unit density and easy corrosion.
This material is not only expensive, but also in very limited supply, which is not suitable for mass production of products

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Add 21-35g melamine resin, 0.7-1.4g nano-scale active silica, 0.14-0.7g release agent, 1.4-2.1mL coupling agent, 1.4-14g plate fiber reinforcing agent to 98-112g spherical graphite short carbon fiber. The mixture is put into a mixer and mixed for 20-40 minutes, and preheated to 80-100°C. The mixture is put into a mold preheated to 80-100°C. The molding temperature is controlled at 100-180° C. and the molding pressure is 0.5-15 MPa on a vacuum hydraulic press for vacuum molding, and the holding time in the hydraulic press is controlled at 2-50 minutes. The product is demolded and placed in an oven for post-processing. The temperature is controlled at 80-180°C and the time is controlled at 0.2-2 hours. After taking it out, it is cooled at room temperature to obtain the finished product. Its quality index conforms to the composite bipolar plate standard for proton exchange membrane fuel cells.

[0019]

Reality

Shi

example...

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PUM

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Abstract

The preparation method includes following steps: according to certain ratio (wt), mixing 70-80% globular graphite, 12-25% melamine resin, 0.5-1% viscosity control agent, 0.1-0.5% mold release agent, 1-1.5% coupling agent, and 1-10% reinforcing agent for fiber of pole plate by blender, controlled mixing time 20 - 40 minutes; putting the preheated mixed materials into mould at 80 - 100 dig.C; carrying out pressure forming mixed materials in vacuum hydraulic press under 100 - 180 deg.C and 0.5 - 15 MPa, and controlled time of heat preservation as 2-50 minutes. Finished product is obtained after post treatment at 80 - 180 deg.C for 0.2 - 2 hours and cooled at room temperature. Quality of the prepared composite bipolar plate is accorded with standard.

Description

technical field [0001] The invention relates to a preparation method of a composite bipolar plate for a proton exchange membrane fuel cell. It belongs to the field of fuel cell technology. Background technique [0002] A fuel cell is a power generating device that efficiently converts fuel and oxidant into electricity. Compared with traditional power generation technology, it has the advantages of high energy conversion efficiency, less pollution, and low noise. Now that we have entered the 21st century, human beings have an increasing demand for energy, while traditional energy resources such as oil and coal are increasingly scarce, and the pollution generated during use is also more significant. The contradiction of sustainable development will become more and more serious. Therefore, as a new energy supply device, the development and research of fuel cell has been paid more and more attention by governments and scientists of various countries. [0003] Proton exchange...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/88
CPCY02E60/50
Inventor 方卫民马小杰
Owner ZHEJIANG UNIV
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