CN108448131A - A kind of processing method of fuel cell composite material double polar plate - Google Patents
A kind of processing method of fuel cell composite material double polar plate Download PDFInfo
- Publication number
- CN108448131A CN108448131A CN201810209788.5A CN201810209788A CN108448131A CN 108448131 A CN108448131 A CN 108448131A CN 201810209788 A CN201810209788 A CN 201810209788A CN 108448131 A CN108448131 A CN 108448131A
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- China
- Prior art keywords
- fuel cell
- petroleum coke
- composite material
- polar plate
- powder
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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
- H01M8/0204—Non-porous and characterised by the material
- H01M8/0213—Gas-impermeable carbon-containing materials
-
- 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
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Fuel Cell (AREA)
Abstract
The invention discloses a kind of novel processing methods of fuel cell composite material double polar plate.Primary raw material includes petroleum coke, coal tar pitch, carbonaceous mesophase spherules, and fuel battery double plates are made after the processing steps such as milling, kneading, molding, roasting, graphitization successively.This fuel cell composite material double polar plate is that binder carries out processing and forming due to the use of coal tar pitch and carbonaceous mesophase spherules, therefore it is low to solve mechanical strength existing for the made bipolar plates of pure graphite cake, the problems such as poor air-tightness, and since bonded adhesive is not used, so the problems such as made bipolar plates are not in electric conductivity and impacted corrosion resistance.
Description
Technical field
The present invention relates to the processing methods of composite graphite plate, and in particular to a kind of fuel cell composite material double polar plate adds
Work method.
Technical background
Fuel cell（Proton Exchange Membrance fuel Cell, abbreviation：PEMFC）It is a kind of by fuel
The power generator of electric energy is converted by the electrocatalytic reaction on electrode with the chemical energy in oxidant.Fuel cell bipolar
Plate is an important component in fuel cell pack, and the quality of bipolar plates directly affects the power generation performance of fuel cell,
Expense shared by bipolar plates is relatively high, between typically constitute from fuel cell cost 60%~70%.
Ideal bipolar plates should be electricity, hot good conductor, have good mechanical performance, good gas barrier properties relatively low close
The features such as degree, good corrosion resistance.In common PEMFC, flow field and pole plate can be integrated, can also be seperated.Mesh
The research and application of preceding bipolar plates are concentrated mainly on sheet of metallic material, graphite material plate and composite panel, these three bipolar plates
It is each advantageous：1, metal material bipolar plates high mechanical strength, good conductivity, impermeability is good, and weakness is poor corrosion resistance；2, graphite
Bipolar plates have good electric conductivity and corrosion resistance, and weakness is that intensity is low, there is stomata；3, composite material double pole plate, early period one
Secondary property input is big, needs to accept or reject between electric conductivity and intensity.
Although composite material double pole plate difficult processing, efficiency are low, early investment is big, it combines graphite and metal double polar plates
Certain advantages, be one of development trend in future.
Invention content
The purpose of the present invention is to solve the above problem of the existing technology, provides a kind of fuel cell composite material
The processing method of bipolar plates.
The present invention uses the mixture of carbonaceous mesophase spherules and coal tar pitch for binder, and binder is added to grade in proportion
In the after-smithing petroleum coke powder prepared, by being molded again after abundant kneading, the blank after molding is carried out successively
Roasting and graphitization processing carry out simply machining after graphitization processing again.
The binder is the mixture of coal tar pitch and carbonaceous mesophase spherules, and mixed proportion is coal tar pitch:Mesocarbon
Microballoon=30:1~1:30.
After-smithing petroleum coke powder is matched in proportion after the binder and grading, binder:After being forged after grading
Petroleum coke powder=1:100~1:10.
The after-smithing petroleum coke powder that the grade in proportion prepares, grading are that coarse powder carries out grading, grading ratio with fine powder
For coarse powder:Fine powder=2:8~7:3.
The abundant kneading of after-smithing petroleum coke powder, kneading process are heated after the binder and grading, heating
Temperature is 150 DEG C~350 DEG C.
The molding mode is compression molding.
The granularity of the carbonaceous mesophase spherules is 0.5 μm~50 μm.
The binder is heated when being configured, and heating temperature is 200 DEG C ~ 350 DEG C.
The after-smithing petroleum coke coarse powder grain size is 75 μm~150 μm.
The after-smithing petroleum coke fine powder grain size is 75 μm of ＜.
The compression molding is that the mixed powder Jing Guo abundant kneading is transferred in molding die
It is placed in horizontal or vertical mould machine, mould under conditions of temperature is 150 DEG C~300 DEG C, pressure is 5MPa~50MPa
Molded, molding time is 5~20 minutes, after compression molding, takes out the bipolar plate blank material that compacting is completed, blank is placed
Enter and carries out cooling treatment in cooling bay.
The advantageous effect that the present invention realizes：
As a result of novel binder in the processing of the fuel cell composite material double polar plate of the present invention, thus make this fuel
Battery composite material bipolar plates not only have excellent electric conductivity and corrosion resistance, but also with higher mechanical strength and good gas
Body leakproofness, and as a result of special molding mode, also reduce processing cost.
Description of the drawings
Fig. 1 is the flow process chart of the present invention.
Specific implementation mode
The embodiment that present invention will be further explained below with reference to specific examples.It should be understood that these embodiments are only used for
Illustrate the present invention rather than limits the scope of the invention.In addition, it should also be understood that, after reading the content taught by the present invention, this
Field technology personnel can make various changes or modifications the present invention, and such equivalent forms equally fall within right appended by the application and want
Seek book limited range.
Embodiment
1. the petroleum coke after calcining to be crushed and is milled respectively, broken petroleum coke powder is sieved, is taken out
Granularity is 75 μm~150 μm parts, is sieved to the petroleum coke powder after milling, and the 75 μm of parts granularity ＜ are taken out.
2. pressing coarse powder:Fine powder=5:Coarse powder and fine powder are carried out grading by 5 ratio, are uniformly mixed.
3. pressing coal tar pitch:Carbonaceous mesophase spherules=10:1 ratio configures coal tar pitch and carbonaceous mesophase spherules, with
It is heated during setting, heating temperature is 300 DEG C.
4. pressing binder:After-smithing petroleum coke powder=1 after grading:20 ratio is by after-smithing petroleum coke powder after binder and grading
It is mixed, is heated in mixed process, heating temperature is 250 DEG C.
5. after powder is uniformly mixed, it is transferred to molding die and is placed in vertical mould machine, is 200 in temperature
DEG C, pressure is compression molding under conditions of 10MPa, and molding time is 10 minutes.
6. blank after molding is placed into cooling bay and carries out cooling treatment, wait for that blank is cooled to room temperature.
7. carrying out calcination process according to preset heating curve to blank after cooling.
8. carrying out graphitization processing to the product after roasting.
9. being machined accordingly to the product after graphitization.
Claims (11)
1. the processing method of kind of fuel cell composite material double polar plate, it is characterised in that：It is dripped using carbonaceous mesophase spherules and coal
Green mixture is binder, binder is added in the after-smithing petroleum coke powder that grade in proportion prepares, by abundant kneading it
It is molded again afterwards, carries out roasting and graphitization processing successively to the blank after molding, after graphitization processing again
Simply machine.
2. the processing method of fuel cell composite material double polar plate according to claim 1, it is characterised in that：Described is viscous
The mixture that agent is coal tar pitch and carbonaceous mesophase spherules is tied, mixed proportion is coal tar pitch:Carbonaceous mesophase spherules=30:1~1:30.
3. the processing method of fuel cell composite material double polar plate according to claim 1, it is characterised in that：Described is viscous
Knot agent is matched in proportion with after-smithing petroleum coke powder after grading, binder:After-smithing petroleum coke powder=1 after grading:100~
1:10。
4. the processing method of fuel cell composite material double polar plate according to claim 1, it is characterised in that：Described presses
The after-smithing petroleum coke powder that ratio grade prepares, grading are that coarse powder carries out grading with fine powder, and grading ratio is coarse powder:Fine powder=2:8~
7:3。
5. the processing method of fuel cell composite material double polar plate according to claim 1, it is characterised in that：Described is viscous
The abundant kneading of agent and after-smithing petroleum coke powder after grading is tied, kneading process is heated, and heating temperature is 150 DEG C~350
℃。
6. the processing method of fuel cell composite material double polar plate according to claim 1, it is characterised in that：It is described at
Type mode is compression molding.
7. binder according to claim 2, it is characterised in that：The granularity of the carbonaceous mesophase spherules be 0.5 μm~
50μm。
8. binder according to claim 2, it is characterised in that：The binder
It when being configured, is heated, heating temperature is 200 DEG C ~ 350 DEG C.
9. after-smithing petroleum coke coarse powder according to claim 4, it is characterised in that：The after-smithing petroleum coke coarse powder grain size is
75 μm~150 μm.
10. after-smithing petroleum coke fine powder according to claim 4, it is characterised in that：The after-smithing petroleum coke fine powder grain size
For 75 μm of ＜.
11. molding mode according to claim 6, it is characterised in that：The compression molding is that will pass through abundant kneading
Mixed powder be transferred in molding die and be placed in horizontal or vertical mould machine, temperature is 150 DEG C~300 DEG C, pressure is
Compression molding under conditions of 5MPa~50MPa, molding time is 5~20 minutes, after compression molding, takes out what compacting was completed
Blank is placed into cooling bay and carries out cooling treatment by bipolar plate blank material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810209788.5A CN108448131B (en) | 2018-03-14 | 2018-03-14 | Processing method of fuel cell composite material bipolar plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810209788.5A CN108448131B (en) | 2018-03-14 | 2018-03-14 | Processing method of fuel cell composite material bipolar plate |
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| Publication Number | Publication Date |
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| CN108448131A true CN108448131A (en) | 2018-08-24 |
| CN108448131B CN108448131B (en) | 2020-11-13 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1379487A (en) * | 2001-04-03 | 2002-11-13 | 三菱化学株式会社 | Production method of fuel battery baffle plate |
| US20070111078A1 (en) * | 2005-11-11 | 2007-05-17 | Nisshinbo Industries, Inc. | Fuel cell bipolar plate |
| CN101691300A (en) * | 2009-10-20 | 2010-04-07 | 兴和兴永碳素有限公司 | Large-size medium-grained graphite material and production process thereof |
| CN102296329A (en) * | 2011-09-07 | 2011-12-28 | 万基控股集团石墨制品有限公司 | Components of graphitized anode for titanium electrolytic tank and manufacturing method thereof |
-
2018
- 2018-03-14 CN CN201810209788.5A patent/CN108448131B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1379487A (en) * | 2001-04-03 | 2002-11-13 | 三菱化学株式会社 | Production method of fuel battery baffle plate |
| US20070111078A1 (en) * | 2005-11-11 | 2007-05-17 | Nisshinbo Industries, Inc. | Fuel cell bipolar plate |
| CN101691300A (en) * | 2009-10-20 | 2010-04-07 | 兴和兴永碳素有限公司 | Large-size medium-grained graphite material and production process thereof |
| CN102296329A (en) * | 2011-09-07 | 2011-12-28 | 万基控股集团石墨制品有限公司 | Components of graphitized anode for titanium electrolytic tank and manufacturing method thereof |
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| CN108448131B (en) | 2020-11-13 |
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Effective date of registration: 20190917 Address after: 242000 Northwest Intersection of Tieshan Road Qingyijiang Avenue, Xuancheng Economic and Technological Development Zone, Xuancheng City, Anhui Province Applicant after: Anhui brocade Carbon Technology Development Co., Ltd. Address before: 300180 R & D building, No. 174 Jintang Road, Hedong District, Tianjin, 201 Applicant before: Tianjin Jinmei Carbon Material Science and Technology Development Co., Ltd. |
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