CN102299355A - Material for forming fuel cell separating plate and manufacturing method thereof, fuel cell separating plate and fuel cell - Google Patents
Material for forming fuel cell separating plate and manufacturing method thereof, fuel cell separating plate and fuel cell Download PDFInfo
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- CN102299355A CN102299355A CN2010105634749A CN201010563474A CN102299355A CN 102299355 A CN102299355 A CN 102299355A CN 2010105634749 A CN2010105634749 A CN 2010105634749A CN 201010563474 A CN201010563474 A CN 201010563474A CN 102299355 A CN102299355 A CN 102299355A
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- Prior art keywords
- fuel cell
- binding agent
- separating plate
- graphite
- filler
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/02—Details
- H01M8/0202—Collectors; Separators, e.g. bipolar separators; Interconnectors
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/515—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
- C04B35/52—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbon, e.g. graphite
- C04B35/522—Graphite
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Ceramic Engineering (AREA)
- Organic Chemistry (AREA)
- Structural Engineering (AREA)
- Materials Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Fuel Cell (AREA)
Abstract
The invention provides a material for forming a fuel cell separating plate, which adopts foamed polypropylene (EPP) having thermoplastic resins, foaming polyethylene (EPE), and expanded polystyrene (EPS), etc. as adhesives. The material has higher electric conductivity, greater mechanical strength compared with the prior art. Meanwhile, the material has additional strains and enables to make the separating plate light.
Description
Technical field
The present invention relates to a kind of molding material and manufacture method, fuel cell separating plate and fuel cell of fuel cell separating plate.
Background technology
Fuel cell by as the battery pack of body, by raw materials such as natural gas, methyl alcohol be restructured as the reformer of hydrogen, the AC/DC converter that changes the direct current of generating state into alternating current etc. constitutes.Wherein, battery pile is formed by several～tens hydrogen separation plates and air pole separating plate.Though separating plate is the supporter of support cells group, it preferably has conductibility, therefore is necessary for all excellent material of mechanical strength and conductivity.
In addition,, proposed and to have kept rerum naturas such as mechanical strength and conductivity, and reduced the weight and the thickness of separating plate for the lightweight of battery pack and system.
At present, the battery that acts as a fuel can use metal, graphite block, carbon complex etc. with the material of separating plate.Yet, the material except that carbon complex, owing to reasons such as corrosivity, weak mechanical strength, weight are bigger, therefore poor for applicability.On the contrary, carbon complex has the advantage that can remedy these defectives fully, therefore receives publicity.
In addition, when using carbon complex, can be shaped to complicated stream shape, therefore also have the reduction manufacturing expense, can mass-produced advantage.
As the binding agent that can be used for carbon complex, use thermosetting resins such as vinyl esters system, phenol system, epoxy system at present, and polypropylene (PP), fluorine are macromolecule (PVDF), liquid crystal polymer (LCP), polyphenylene sulfide thermoplastic resins such as (PPS).Wherein, when using thermosetting resin, in difficulty comparatively aspect the characteristic of resin and in the lightweight of separating plate.On the other hand, thermoplastic resin, not only easily lightweight, and be easy to a large amount of productions by injection moulding therefore owing to reduce the cost of separating plate, thereby thinks that it helps the commercialization of fuel cell.
Summary of the invention
The object of the invention is to provide a kind of molding material of fuel cell separating plate, use as the expanded polypropylene (EPP) of thermoplastic resin, polyethylene foamed (EPE), expanded polystyrene (EPS) (EPS) etc. as binding agent, and have and identical or higher in the past conductivity, mechanical strength, increased strain, can make the separating plate lightweight.
And purpose of the present invention also is to provide a kind of manufacture method of molding material of aforementioned fuel cells separating plate.
In addition, the present invention also aims to provide a kind of fuel cell separating plate and fuel cell of the molding material manufacturing by the aforementioned fuel cells separating plate.
The molding material of fuel cell separating plate of the present invention, it is characterized in that, by mixing and melting mixing cooperates and is selected from least a binding agent in expanded polypropylene (EPP), polyethylene foamed (Expanded polyethylene:EPE), the expanded polystyrene (EPS) (Expanded polystylene:EPS), be selected from natural tabular graphite, expanded graphite, artificial tabular graphite, the artificial globular graphite at least two kinds graphite composite, and be selected from conductivity filler at least a in carbon black, carbon fiber, the carbon nano-tube.
The manufacture method of the molding material of fuel cell separating plate of the present invention, be characterised in that, use banbury or single shaft (single), twin shaft (twin), 12 (ring) extruders mix and melting mixing is selected from expanded polypropylene (EPP), polyethylene foamed (Expanded polyethylene:EPE), at least a binding agent in the expanded polystyrene (EPS) (Expanded polystylene:EPS), be selected from natural tabular graphite, expanded graphite, artificial tabular graphite, at least two kinds graphite composite in the artificial globular graphite, and be selected from carbon black, carbon fiber, at least a conductivity filler in the carbon nano-tube is fabricated to powder or graininess.
Feature of the present invention is that use is by the fuel cell separating plate of the molding material institute moulding of the fuel cell separating plate of said method manufacturing, and the fuel cell that uses this separating plate.
Description of drawings
Fig. 1～4th illustrates the result curve figure that the fuel cell separating plate of the embodiment of the invention and comparative example manufacturing is measured conductivity, bending strength, strain and density.
Embodiment
In the molding material of fuel cell separating plate of the present invention, use is selected from expanded polypropylene (EPP), polyethylene foamed (EPE), the expanded polystyrene (EPS) (EPS) any as binding agent, they are when being used for the fuel cell separating plate, physical properties excellent such as chemical resistance, thermal endurance, mechanical strength, and also excellent with the mixing property and the dispersiveness of filler.Preferred 1.1～45 times the material that uses its dilation (foam degrees) foaming for normally used polypropylene (PP), polyethylene (PE), polystyrene (PS), and the ratio of components that adds, all mixtures with binding agent, graphite composite and filler are benchmark, are preferably 5～45 weight %.In the present invention, better be to select to use expanded polypropylene as binding agent.
In the molding material of fuel cell separating plate of the present invention, can select to use in natural tabular graphite with 0.005～0.25mm particle size, expanded graphite, artificial tabular graphite, the artificial globular graphite at least two kinds as graphite composite, its ratio of components, all mixtures with binding agent, graphite composite and filler are benchmark, are preferably 1～80 weight %.
In the molding material of fuel cell separating plate of the present invention, can select to use at least a in carbon black, carbon fiber, the carbon nano-tube as the conductivity filler, its ratio of components, all mixtures with binding agent, graphite composite and filler are benchmark, are preferably 0.01～15 weight %.Selecting to use the surface area of these conductivity fillers is 200～1300m
2The material of/g is suitable for improving the conductibility of separating plate, wherein carbon black most preferably.
The manufacture method of the molding material of fuel cell separating plate of the present invention, be that aforementioned binding agent, graphite composite and filler are put in banbury (internal mixer) or single shaft, twin shaft or 12 the extruder by each feeder (feeder) with different supply units, mix previous materials then.
At this moment, in order to make graphite composite and filler enter the inside of binding agent, outside pore at an easy rate, usually use following mode: supply with little graphite composite and the filler of pore size earlier than 0.005～0.5mm, and then the big graphite composite of mixing ratio pore size.
, cause pore to disappear for the binding agent that does not make expansion shrinks again herein, it is very important regulating banbury or each interval temperature of extruder.
For example, when using banbury, in order to make in batch the material of (batch) form, the bulk temperature that preferably makes screw rod and machine barrel is mixed than low the beginning below 10 ℃ of temperature that dissolve of binding agent, and lentamente temperature is risen to dissolving more than the temperature of binding agent and make.
When using extruder, preferably from the interval of supplying with binding agent to the temperature in the interval of supplying with graphite composite and filler, identical during with the use banbury, maintain and hang down below 10 ℃ than the temperature that dissolves of binding agent, then to the interval of supplying with graphite composite for dissolving more than the temperature, and each section interval, for example per 2～5 interval temperature that increase are made for 5～100 ℃.
Can be powder or graininess with material blends extrusion forming or injection moulding, thereby make separating plate by the said method manufacturing.
Below, the present invention will be described in more detail based on embodiment.
Embodiment 1
Use the mixing 19 weight % expanded polypropylenes (EPP) of make-up machine, the tabular graphite of 58.5 weight %, 19.5 weight % expanded graphites, 3 weight % conductibility carbon blacks, and use extruder the molding material of fuel cell separating plate to be fabricated to the size of 100 * 100 * 2mm.
Herein, use is expanded to 3 times material (before the expansion being 1 times) as expanded polypropylene, and it is the graphite of 70 μ m that tabular graphite and expanded graphite use particle mean size.In addition, the conductibility carbon black uses 800m
3Carbon black.
Comparative example 1
Except in previous embodiment 1, use general polypropylene as outside the binding agent and previous embodiment 1 implement equally, make the molding material of fuel cell separating plate.
Mensuration is by conductivity (ASTM F84), bending strength (ASTM D790), strain (ASTM D790) and the density of the separating plate of previous embodiment 1 and 1 moulding of comparative example, the result is shown in Fig. 1～4, hence one can see that when using expanded polypropylene, conductivity and bending strength are with identical or higher in the past, and density reduces (lightweight).In addition as can be known, under identical bending strength, when using expanded polypropylene,, therefore produce the possibility of separating plate less thick influence big because strain increases.
Molding material as fuel cell separating plate of the present invention, with as expanded polypropylene (EPP), polyethylene foamed (EPE) and the expanded polystyrene (EPS) (EPS) etc. of thermoplastic resin as binding agent, produced and had and identical or higher in the past conductivity, mechanical strength, increased strain, and can make the light-weighted effect of separating plate.
Claims (13)
1. the molding material of a fuel cell separating plate, it is characterized in that, by mixing and melting mixing cooperates and is selected from least a binding agent in expanded polypropylene (EPP), polyethylene foamed (Expanded polyethylene:EPE), the expanded polystyrene (EPS) (Expanded polystylene:EPS), be selected from natural tabular graphite, expanded graphite, artificial tabular graphite, the artificial globular graphite at least two kinds graphite composite, and be selected from conductivity filler at least a in carbon black, carbon fiber, the carbon nano-tube.
2. the molding material of fuel cell separating plate as claimed in claim 1, it is characterized in that, aforementioned binding agent is that dilation is compared 1.1～45 times the material of foaming with normally used polypropylene, polyethylene, polystyrene, and its ratio of components, all mixtures with binding agent, graphite composite and filler are benchmark, are 5～45 weight %.
3. the molding material of fuel cell separating plate as claimed in claim 1, it is characterized in that aforementioned graphite composite has the particle size of 0.005～0.25mm, and its ratio of components, all mixtures with binding agent, graphite composite, filler are benchmark, are 1～80 weight %.
4. the molding material of fuel cell separating plate as claimed in claim 1 is characterized in that, the ratio of components of aforementioned conductivity filler is a benchmark with all mixtures of binding agent, graphite composite, filler, is 0.01～15 weight %.
5. use the manufacture method of material when a fuel cell separates, it is characterized in that, use mixing of banbury or extruder and melting mixing to be selected from expanded polypropylene (EPP), polyethylene foamed (Expandedpolyethylene:EPE), at least a binding agent in the expanded polystyrene (EPS) (Expanded polystylene:EPS), be selected from natural tabular graphite, expanded graphite, artificial tabular graphite, at least two kinds graphite composite in the artificial globular graphite, and be selected from carbon black, carbon fiber, at least a conductivity filler in the carbon nano-tube, and it is fabricated to powder or graininess.
6. the manufacture method of the molding material of fuel cell separating plate as claimed in claim 5, it is characterized in that, aforementioned binding agent is that its dilation is compared 1.1～45 times the material of foaming with normally used polypropylene, polyethylene, polystyrene, and its ratio of components, all mixtures with binding agent, graphite composite and filler are benchmark, are 5～45 weight %.
7. the manufacture method of the molding material of fuel cell separating plate as claimed in claim 5, it is characterized in that, aforementioned graphite composite has the particle size of 0.005～0.25mm, and its ratio of components, all mixtures with binding agent, graphite composite, filler are benchmark, are 1～80 weight %.
8. the manufacture method of the molding material of fuel cell separating plate as claimed in claim 5 is characterized in that, the ratio of components of aforementioned conductivity filler is a benchmark with all mixtures of binding agent, graphite composite, filler, is 0.01～15 weight %.
9. the manufacture method of the molding material of fuel cell separating plate as claimed in claim 5, it is characterized in that, aforementioned binding agent, graphite composite and filler are put in aforementioned banbury or the extruder by each feeder with different supply units, and with respect to binding agent, supply with little graphite composite and the filler of pore size earlier than 0.005～0.5mm, and then other big graphite composite of mixing ratio pore size.
10. as the manufacture method of the molding material of claim 5 or 9 described fuel cell separating plates, it is characterized in that, when stating banbury before use, the temperature of the interval of aforementioned binding agent to the interval of supplying with graphite composite and filler will be supplied with, maintain than binding agent to dissolve temperature low below 10 ℃, while and mix lentamente temperature be increased to more than the melt temperature.
11. molding material as claim 5 or 9 described fuel cell separating plates, it is characterized in that, when stating extruder before use, the temperature of the interval of aforementioned binding agent to the interval of supplying with graphite composite and filler will be supplied with, maintain and hang down below 10 ℃ than the temperature that dissolves of binding agent, reach up to the interval of supplying with graphite composite then and dissolve more than the temperature, and, increase by 5～100 ℃ every one section interval.
12. a fuel cell separating plate is characterized in that, uses the molding material of each described fuel cell separating plate of claim 5 to 11.
13. a fuel cell is characterized in that, adopts the described fuel cell separating plate of claim 12.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2010-0061350 | 2010-06-28 | ||
| KR1020100061350A KR101151012B1 (en) | 2010-06-28 | 2010-06-28 | Material for molding a fuel cell separator, process for preparing the same, a fual cell separator and a fuel cell |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102299355A true CN102299355A (en) | 2011-12-28 |
| CN102299355B CN102299355B (en) | 2014-03-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010563474.9A Expired - Fee Related CN102299355B (en) | 2010-06-28 | 2010-11-29 | Material for forming fuel cell separating plate and manufacturing method thereof, fuel cell separating plate and fuel cell |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR101151012B1 (en) |
| CN (1) | CN102299355B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113260665A (en) * | 2019-01-31 | 2021-08-13 | 积水技术成型株式会社 | Resin molded article |
| CN114094120A (en) * | 2021-11-23 | 2022-02-25 | 成都先进金属材料产业技术研究院股份有限公司 | Integrated graphite electrode for vanadium cell and vanadium cell |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101796305B1 (en) * | 2015-09-23 | 2017-11-10 | 롯데케미칼 주식회사 | Method for preparation of electrode current collector for redox flow battery |
| KR102292350B1 (en) * | 2019-03-29 | 2021-08-23 | 성균관대학교산학협력단 | Flexible bipolar plate for flow battery |
| KR20240030283A (en) * | 2022-08-30 | 2024-03-07 | (주)이유씨엔씨 | Graphite composite Composition for Fuel cell Separator |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1068134A (en) * | 1991-06-27 | 1993-01-20 | 王淑才 | The preparation method of sparkling polystyrene binder |
| CN1239131A (en) * | 1999-07-06 | 1999-12-22 | 董金狮 | Dissolving-fusing modification of EPS and process for preparing adhesive |
| US6974647B2 (en) * | 1997-05-01 | 2005-12-13 | Ballard Power Systems Inc. | Fuel cell fluid distribution layer having integral sealing capability |
| JP2006071080A (en) * | 2004-09-06 | 2006-03-16 | Yokohama Rubber Co Ltd:The | Resin integral pipe |
| CN101528827A (en) * | 2006-10-26 | 2009-09-09 | 积水化成品工业株式会社 | Expandable polystyrenic resin particles and production process thereof, pre-expanded particles and molded foam product |
| CN101740743A (en) * | 2008-11-21 | 2010-06-16 | 韩国轮胎株式会社 | Molding material for fuel cell separator |
-
2010
- 2010-06-28 KR KR1020100061350A patent/KR101151012B1/en active IP Right Grant
- 2010-11-29 CN CN201010563474.9A patent/CN102299355B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1068134A (en) * | 1991-06-27 | 1993-01-20 | 王淑才 | The preparation method of sparkling polystyrene binder |
| US6974647B2 (en) * | 1997-05-01 | 2005-12-13 | Ballard Power Systems Inc. | Fuel cell fluid distribution layer having integral sealing capability |
| CN1239131A (en) * | 1999-07-06 | 1999-12-22 | 董金狮 | Dissolving-fusing modification of EPS and process for preparing adhesive |
| JP2006071080A (en) * | 2004-09-06 | 2006-03-16 | Yokohama Rubber Co Ltd:The | Resin integral pipe |
| CN101528827A (en) * | 2006-10-26 | 2009-09-09 | 积水化成品工业株式会社 | Expandable polystyrenic resin particles and production process thereof, pre-expanded particles and molded foam product |
| CN101740743A (en) * | 2008-11-21 | 2010-06-16 | 韩国轮胎株式会社 | Molding material for fuel cell separator |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113260665A (en) * | 2019-01-31 | 2021-08-13 | 积水技术成型株式会社 | Resin molded article |
| CN113260665B (en) * | 2019-01-31 | 2023-06-27 | 积水技术成型株式会社 | Resin molded body |
| CN114094120A (en) * | 2021-11-23 | 2022-02-25 | 成都先进金属材料产业技术研究院股份有限公司 | Integrated graphite electrode for vanadium cell and vanadium cell |
| CN114094120B (en) * | 2021-11-23 | 2023-10-27 | 成都先进金属材料产业技术研究院股份有限公司 | Integrated graphite electrode for vanadium battery and vanadium battery |
Also Published As
| Publication number | Publication date |
|---|---|
| KR101151012B1 (en) | 2012-05-30 |
| CN102299355B (en) | 2014-03-12 |
| KR20120000863A (en) | 2012-01-04 |
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