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Laminated monopole plate and preparation method thereof, laminated bipolar plate comprising laminated monopole plate and application of laminated bipolar plate

A unipolar plate, stacked technology, applied in the direction of final product manufacturing, fuel cell parts, sustainable manufacturing/processing, etc., can solve the problems of reducing the thickness of the plate, hydrogen permeation of the carbon-based material plate, etc., to reduce Thickness, avoidance of hydrogen permeation, effect of high softening temperature

Active Publication Date: 2020-07-28
FAW JIEFANG AUTOMOTIVE CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The laminated bipolar plate provided by the present invention can significantly improve the electrical conductivity of the through-surface of the plate, solve the problem of hydrogen permeation of the carbon-based material plate, and reduce the thickness of the plate, which is beneficial to the improvement of the stack volume power density

Method used

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  • Laminated monopole plate and preparation method thereof, laminated bipolar plate comprising laminated monopole plate and application of laminated bipolar plate
  • Laminated monopole plate and preparation method thereof, laminated bipolar plate comprising laminated monopole plate and application of laminated bipolar plate
  • Laminated monopole plate and preparation method thereof, laminated bipolar plate comprising laminated monopole plate and application of laminated bipolar plate

Examples

Experimental program
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Effect test

Embodiment 1

[0071] A laminated bipolar plate, the preparation method is as follows:

[0072] (1) Preparation of composite carbon powder

[0073] Put 80 parts of artificial graphite with a D90 of 70 μm, 15 parts of polyvinylidene fluoride, and 5 parts of weather-grown carbon fiber into a Henschel mixer and stir for 20 minutes at 2000 r / min;

[0074] (2) Preparation of composite material layer

[0075] Put 20 parts of polyethylene terephthalate fibers into a planetary mixer with 1000 parts of deionized water, stir for 10 minutes at 1500r / min, then put 5 parts of weather-grown carbon fibers into the planetary mixer , stirred for 10min under the condition of 2000r / min, then put 2 parts of Super-P and 73 parts of artificial graphite powder with D90 of 70μm into the planetary mixer, continued stirring for 30min under the condition of 2000r / min, and poured the stirred slurry Put it into a 1000-mesh sieve, drain the liquid water, then put it into a vacuum oven, evacuate to -0.09MPa, and heat it...

Embodiment 2

[0081] A laminated bipolar plate, the preparation method is as follows:

[0082] (1) Preparation of composite carbon powder

[0083] Put 70 parts of artificial graphite with a D90 of 60 μm, 20 parts of polyvinylidene fluoride, and 10 parts of weather-grown carbon fiber into a Henschel mixer and stir for 30 minutes at 2000 r / min;

[0084] (2) Preparation of composite material layer

[0085] Same as Example 1

[0086] (3) Preparation of stacked bipolar plates

[0087] According to the order from bottom to top, the 3mm thick composite material layer, the 0.03mm thick aluminum alloy sheet, the 3mm thick composite material layer, and the 2mm thick composite carbon powder layer are stacked in sequence, and then put them into the molding flow In the mold of the road, and apply a pressure of 35MPa, while heating to 270 ℃, keep for 3min;

[0088] Then take out the formed unipolar plate, and use a sandblasting machine to treat the surface on the side with the flow channel for 2 minu...

Embodiment 3

[0090] A laminated bipolar plate, the preparation method is as follows:

[0091] (1) Preparation of composite carbon powder

[0092] Put 75 parts of artificial graphite with a D90 of 70 μm, 15 parts of polyvinylidene fluoride, and 10 parts of weather-grown carbon fiber into a Henschel mixer and stir for 30 minutes at 2000 r / min;

[0093] (2) Preparation of composite material layer

[0094] Put 15 parts of polyethylene terephthalate fibers into a planetary mixer with 1000 parts of deionized water, stir for 10 minutes at 1500r / min, then put 10 parts of weather-grown carbon fibers into the planetary mixer , stirred for 10min under the condition of 2000r / min, then put 5 parts of Super-P and 70 parts of artificial graphite powder with D90 of 70μm into the planetary mixer, continued stirring for 30min under the condition of 2000r / min, and poured the stirred slurry Put it into a 1000-mesh sieve, drain the liquid water, then put it into a vacuum oven, evacuate to -0.09MPa, and heat ...

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Abstract

The invention provides a laminated monopole plate and a preparation method thereof, a laminated bipolar plate comprising the laminated monopole plate and an application thereof. The laminated monopoleplate comprises a metal layer, a composite carbon powder layer and a composite material layer. The laminated bipolar plate is advantaged in that conductivity of a through surface of the polar plate can be remarkably improved, a problem of hydrogen permeation of a carbon-based material polar plate is solved, the thickness of the polar plate is reduced, and the volume power density of an electric pile is improved.

Description

technical field [0001] The invention belongs to the technical field of fuel cells, and relates to a laminated unipolar plate and a preparation method thereof, a laminated bipolar plate containing the same and an application thereof. Background technique [0002] As one of the pillar technologies of modern civilization, energy technology has been inseparable from environmental science. The starting point for the development of energy technology must be closely integrated with environmental science to jointly solve the earth's energy crisis and environmental and ecological problems, so as to adapt to the global strategy of sustainable development. In this way, it is bound to pose a huge challenge to the reform of the energy mode again. As a device that directly converts chemical energy into electrical energy, fuel cells have become a hot spot in energy research in the new century due to their unique advantages of high efficiency, high reliability, and good environmental benef...

Claims

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Application Information

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IPC IPC(8): H01M8/0202H01M8/0228H01M8/0206H01M8/0213H01M8/00
CPCH01M8/00H01M8/0202H01M8/0206H01M8/0213H01M8/0228Y02E60/50Y02P70/50
Inventor 韩建崔龙张克金张苡铭倪大龙李利孙宗华苏中辉陈楠王闯
Owner FAW JIEFANG AUTOMOTIVE CO
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