Fuel cell bipolar plate sealing material and preparation method and application thereof

A fuel cell and sealing material technology, applied in fuel cell components, sealing/supporting devices, final product manufacturing, etc., can solve problems such as slow vulcanization speed, difficult molding, and failure to meet low-cost requirements

Active Publication Date: 2022-07-22
NUOBO RUBBER PRODION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, in terms of acid resistance, fluorine-containing rubber is suitable, but its low temperature performance is not good, and it cannot meet the airtightness requirements in low temperature environments; in terms of air resistance, butyl rubber is suitable, but its vulcanization speed is slow and molding is difficult; from molding Considering the stability, liquid silicone rubber is suitable, but the acid resistance and gas permeability of liquid silicone rubber are not good; in view of this problem, polyolefin materials are introduced as fuel cell sealing materials, which not only meet the requirements of acid resistance and gas permeability, but also can realize fast Forming, but the material cost is too high to meet the low cost requirement

Method used

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  • Fuel cell bipolar plate sealing material and preparation method and application thereof
  • Fuel cell bipolar plate sealing material and preparation method and application thereof
  • Fuel cell bipolar plate sealing material and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0080] The materials used in this example are as follows:

[0081] Ethylene-propylene-non-conjugated diene rubber PX008M, Mitsui Chemicals;

[0082]Liquid ethylene-propylene-non-conjugated diene rubber TP-67, Lion Copolymer;

[0083] Zinc 2-ethylhexanoate ZEH-DL, Struktol;

[0084] Anti-aging agent TMQ, Sennics;

[0085] Carbon black SP5000, Cabot Chemical (Tianjin) Co., Ltd.;

[0086] Paraffin oil, Airyr Composites Co., Ltd.;

[0087] 2,4-Dichlorobenzoyl peroxide, AkzoNobel Peroxide Co., Ltd.;

[0088] Triallyl isocyanurate, Jiangsu Huaxing New Material Technology Co., Ltd.;

[0089] N,N'-m-phenylene bismaleimide, Jin Changsheng;

[0090] Vinyltrimethoxysilane, Shin-Etsu Chemical;

[0091] Resorcinol-formaldehyde condensate, ALLNEX (USA);

[0092] The composition of the fuel cell bipolar plate sealing material of this embodiment is shown in Table 1:

[0093] Table 1

[0094] Types of raw materials Recipe / Serving Ethylene-propylene-non-conjugated die...

Embodiment 2

[0103] The composition of the fuel cell bipolar plate sealing material in this embodiment is shown in Table 3:

[0104] table 3

[0105]

[0106]

[0107] The preparation method is the same as that of Example 1.

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Abstract

The invention discloses a fuel cell bipolar plate sealing material and a preparation method and application thereof. The fuel cell bipolar plate sealing material comprises: ethylene-propylene rubber or ethylene-propylene-non-conjugated diene rubber, liquid ethylene-propylene rubber Or liquid ethylene-propylene-non-conjugated diene rubber, carbon black, organic peroxides, softening plasticizers, antioxidants, zinc 2-ethylhexanoate and adhesives. The fuel cell bipolar plate sealing material has low gas permeability, low water vapor permeability, excellent strong acid resistance and high volume resistance, is easy to process, and has low cost, and can be applied to hydrogen fuel cells .

Description

technical field [0001] The invention belongs to the technical field of sealing materials, and in particular relates to a fuel cell bipolar plate sealing material and a preparation method and application thereof. Background technique [0002] In fuel cells, hydrogen and oxygen are chemically reacted to generate electricity, which improves energy efficiency without emitting pollutants. The fuel cell stack in the fuel cell consists of multiple cells. In a single cell, the polymer membrane with catalyst is sandwiched between the fuel electrode metal plate and the air electrode metal plate to form a membrane electrode, and the separators with grooves on both sides are Provide reactive gas, and each layer is sealed with glue to prevent gas leakage. The reaction principle is as follows: Fuel electrode: H 2 →2H + +2e; air electrode: O 2 +4H + +4e→2H 2 O. Hydrogen and oxygen are introduced into the battery cells from the outside, and chemical reactions occur to generate electr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/16C08K3/04C08K13/02C08K5/098H01M8/0284
CPCC08L23/16H01M8/0284C08L2205/025C08K3/04C08K13/02C08K5/098Y02P70/50Y02E60/50
Inventor 李云华张鹏柳延波徐燕王东
Owner NUOBO RUBBER PRODION
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