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Composite bipolar plate conductive plastic plate and preparation method and preparation equipment thereof

A technology of conductive plastics and bipolar plates, applied in circuits, fuel cells, electrical components, etc., can solve the problems of high softening temperature of conductive plastics, large heat generation of bipolar plates, embedded conductive felt, etc., to improve compatibility, The effect of reducing accident rate and resistance

Pending Publication Date: 2019-11-22
江苏恒安储能科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The softening temperature is too high: There are also conductive plastic substrates made of tetrafluororesin. The softening temperature of this conductive plastic is too high. It is difficult to soften the conductive plastic during the welding process, and the conductive felt cannot be well embedded into the substrate. among;
[0005] Excessive resistance: the antistatic plastic on the market has a resistance of 10 8-10 Ω·cm, the general resistance of conductive plastic is 10 3-5 Ω·cm, low-resistance conductive plastic can only reach the level of 100Ω·cm, for the production of composite bipolar plates, the resistance is still too large, the bipolar plate generates a lot of heat during the welding process, and the deformation is serious after cooling

Method used

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  • Composite bipolar plate conductive plastic plate and preparation method and preparation equipment thereof
  • Composite bipolar plate conductive plastic plate and preparation method and preparation equipment thereof
  • Composite bipolar plate conductive plastic plate and preparation method and preparation equipment thereof

Examples

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Comparison scheme
Effect test

Embodiment 1

[0044] In this embodiment, a conductive plastic plate 101 suitable for a composite bipolar plate includes the following components by weight:

[0045] 37g of polyethylene, 12g of superconducting carbon black, 30g of conductive graphite, 8g of carbon nanotubes, 5g of PE-g-MAH compatibilizer, and 8g of POE toughening agent.

[0046] The preparation method is as follows:

[0047] Material preparation 201: prepare each component according to the above weight;

[0048]Mixing 202: close the discharge cover 304 and then close the discharge port, open the feed cover and add the above-mentioned materials into the cylinder 303 from the feed port, start the motor 309, and drive the motor wheel 308, the first belt 312, the second A driven wheel 307, a second belt 306 and a second driven wheel 305 further drive the rotating shaft to make the entire cylinder 303 rotate with the rotating shaft as the axis, fully mix 202 the materials inside the cylinder 303, close the motor 309 after mixing...

Embodiment 2

[0054] In this embodiment, a conductive plastic plate 101 suitable for a composite bipolar plate includes the following components by weight:

[0055] 40g of polypropylene, 10g of superconducting carbon black, 25g of conductive graphite, 10g of carbon nanotubes, 4g of PE-g-MAH compatibilizer, and 15g of POE toughening agent.

[0056] The preparation method is as follows:

[0057] Material preparation 201: prepare each component according to the above weight;

[0058] Mixing 202: close the discharge cover 304 and then close the discharge port, open the feed cover and add the above-mentioned materials into the cylinder 303 from the feed port, start the motor 309, and drive the motor wheel 308, the first belt 312, the second A driven wheel 307, a second belt 306 and a second driven wheel 305 further drive the rotating shaft to make the entire cylinder 303 rotate with the rotating shaft as the axis, fully mix 202 the materials inside the cylinder 303, close the motor 309 after mi...

Embodiment 3

[0063] In this embodiment, a conductive plastic plate 101 suitable for a composite bipolar plate includes the following components by weight:

[0064] 48g of polyethylene, 15g of superconducting carbon black, 28g of conductive graphite, 6g of carbon nanotubes, 8g of PE-g-MAH compatibilizer, and 15g of POE toughening agent.

[0065] The preparation method is as follows:

[0066] Material preparation 201: prepare each component according to the above weight;

[0067] Mixing 202: close the discharge cover 304 and then close the discharge port, open the feed cover and add the above-mentioned materials into the cylinder 303 from the feed port, start the motor 309, and drive the motor wheel 308, the first belt 312, the second A driven wheel 307, a second belt 306 and a second driven wheel 305 further drive the rotating shaft to make the entire cylinder 303 rotate with the rotating shaft as the axis, fully mix 202 the materials inside the cylinder 303, close the motor 309 after mixi...

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Abstract

The invention discloses a conductive plastic plate suitable for a composite bipolar plate. The conductive plastic plate comprises the following components in parts by weight: 35-55% of base material resin; 10-20% of superconducting carbon black; 20-50% of conductive graphite; 5-15% of a carbon nanotube; 0.5-10% of a compatilizer; and 3-30% of a toughening agent. The base material resin is polyethylene or polypropylene. The conductive plastic plate has the advantages of being low in softening temperature, good in conductivity and resistant to corrosion.

Description

technical field [0001] The invention relates to the technical field of liquid flow batteries, and more specifically relates to a composite bipolar plate conductive plastic plate and its preparation method and preparation equipment. Background technique [0002] The bipolar plate is one of the key components of the flow battery, and it is a conductive separator that collects and conducts current and separates the positive and negative electrolytes. One side of a single said bipolar plate serves as the negative pole, and the other side serves as the positive pole. Different battery systems use different materials as bipolar plates. In existing flow batteries, graphite plates or conductive plastic plates are mainly used as bipolar plate substrates. In order to increase the electrochemical reaction area of ​​bipolar plates, the surface of graphite plates or conductive plastic plates will Lay a layer of conductive carbon felt or graphite felt. This kind of bonding is to make t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/0221H01M8/0226B29B7/10B29B7/22B29C48/07
CPCH01M8/0221B29B7/106B29B7/22B29C48/07H01M8/0226Y02E60/50
Inventor 王萌刘学军孟琳张东东刘建波
Owner 江苏恒安储能科技有限公司
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