Graphite bipolar plate for fuel cell and manufacturing process therefor

A fuel cell and manufacturing process technology, used in fuel cells, manufacturing tools, sustainable manufacturing/processing, etc., can solve the problems of the need to improve the electrical conductivity and the high resistivity of the electrode plate, and improve the flexural strength and flexibility. Good performance, good electrical conductivity

Active Publication Date: 2021-06-18
青岛岩海碳材料有限公司
6 Cites 1 Cited by

AI-Extracted Technical Summary

Problems solved by technology

[0004] In view of the related technologies mentioned above, the inventor believes that when the graphite bipolar plate is molded once, it is easy to ge...
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Method used

In conjunction with the data in embodiment 1-10 and table 2, it can be seen that in embodiment 1-3, one side of graphite electrode plate is parallel to each other through the flow path that pre-pressing and mold ...
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Abstract

The invention relates to the field of fuel cells, and particularly discloses a graphite bipolar plate for a fuel cell and a manufacturing process therefor. The manufacturing process for the graphite bipolar plate for the fuel cell comprises the following steps: S1, pre-pressing: pre-pressing exhaust lines on one surface or two surfaces of a graphite plate to obtain a prepressed bipolar plate; and S2, mold pressing: according to the design requirement of a flow channel, mold-pressing a flow channel on one surface or two surfaces of the prepressed bipolar plate after prepressing to prepare the double-grain graphite bipolar plate. The graphite bipolar plate for the fuel cell has the advantages of high conductivity and good mechanical property.

Application Domain

Final product manufactureFuel cells +1

Technology Topic

EngineeringMechanical properties of carbon nanotubes +7

Image

  • Graphite bipolar plate for fuel cell and manufacturing process therefor
  • Graphite bipolar plate for fuel cell and manufacturing process therefor
  • Graphite bipolar plate for fuel cell and manufacturing process therefor

Examples

  • Experimental program(28)
  • Comparison scheme(6)
  • Effect test(1)

Example Embodiment

[0048] Preparation example 1-4 of diabase fiber powder
[0049] Preparation Example 1-4 The coke particles were selected from Anyang Yuding Metallurgy Co., Ltd., the dolomite was selected from Lingshou County Dongfeng Dolomite Co., Ltd., and the carbon nanotubes were selected from Beijing Deke Daojin Technology Co., Ltd., the model is CNT104.

Example Embodiment

[0050] Preparation Example 1: Mix diabase ore, coke grains and dolomite at a mass ratio of 1:0.3:0.2, melt at 1450°C, and draw at a speed of 3m/min to make a fiber intermediate. During the process, the carbon nanotubes are atomized and sprayed onto the surface of the fiber intermediate at a pressure of 6 MPa. The thickness of the carbon nanotubes is 0.1um, dried at 120°C for 2 hours, and crushed to obtain diabase fiber powder. The chemical composition of the dolomite is shown in Table 1. The mass ratio of calcium oxide and magnesium oxide in dolomite is 2:1, the fixed carbon content in coke particles is 84%, the sulfur content is 0.8%, the volatile matter is 2%, and the ash content is 13.5%. %, the calorific value is 4602kcal/kg, the particle size of diabase and dolomite is 20mm, and the particle size of coke particles is 60mm.
[0051] Table 1 Chemical composition of diabase
[0052] wt SiO 2

Example Embodiment

[0053] Preparation example 2: Mix diabase ore, coke particles and dolomite at a mass ratio of 1:0.4:0.3, melt at 1480°C, and draw at a speed of 3.3m/min to make a fiber intermediate. In the process, the carbon nanotubes are atomized and sprayed onto the surface of the fiber intermediate at a pressure of 8 MPa. The thickness of the carbon nanotubes is 0.2um, dried at 130°C for 1.5h, and crushed to obtain diabase fiber powder. The chemical composition of greenstone is shown in Table 1. The mass ratio of calcium oxide and magnesium oxide in dolomite is 2:1, the fixed carbon content in coke particles is 84%, the sulfur content is 0.8%, the volatile matter is 2%, and the ash content The calorific value is 13.5%, the calorific value is 4602kcal/kg, the particle size of diabase and dolomite is 50mm, and the particle size of coke particles is 90mm.

PUM

PropertyMeasurementUnit
Depth0.4 ~ 2.0mm
Width0.3 ~ 20.0mm
Density1.6 ~ 2.0g/cm³

Description & Claims & Application Information

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