CN107887612A - A kind of processing method of graphite bipolar plate of fuel battery - Google Patents
A kind of processing method of graphite bipolar plate of fuel battery Download PDFInfo
- Publication number
- CN107887612A CN107887612A CN201711136118.7A CN201711136118A CN107887612A CN 107887612 A CN107887612 A CN 107887612A CN 201711136118 A CN201711136118 A CN 201711136118A CN 107887612 A CN107887612 A CN 107887612A
- Authority
- CN
- China
- Prior art keywords
- fuel battery
- graphite
- bipolar plate
- processing method
- bipolar
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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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
- H01M4/00—Electrodes
- H01M4/86—Inert electrodes with catalytic activity, e.g. for fuel cells
- H01M4/88—Processes of manufacture
- H01M4/8875—Methods for shaping the electrode into free-standing bodies, like sheets, films or grids, e.g. moulding, hot-pressing, casting without support, extrusion without support
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/86—Inert electrodes with catalytic activity, e.g. for fuel cells
- H01M4/88—Processes of manufacture
- H01M4/8803—Supports for the deposition of the catalytic active composition
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/86—Inert electrodes with catalytic activity, e.g. for fuel cells
- H01M4/88—Processes of manufacture
- H01M4/8817—Treatment of supports before application of the catalytic active composition
-
- 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
Abstract
The invention discloses a kind of new processing method of graphite bipolar plate of fuel battery.Primary raw material includes petroleum coke, coal tar pitch, carbonaceous mesophase spherules, successively by suppressing, be calcined, impregnate, after baking, graphitization, obtained fuel battery double plates after the processing step such as machining.This graphite bipolar plate of fuel battery using coal tar pitch and carbonaceous mesophase spherules due to carrying out impregnation processability, therefore it is low to solve mechanical strength existing for the made bipolar plates of pure graphite cake, it is big to machine difficulty, the problems such as poor air-tightness, and due to 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 method of graphite cake, and in particular to a kind of processing method of graphite bipolar plate of fuel battery.
Background technology
Fuel cell（Proton Exchange Membrance fuel Cell, abbreviation：PEMFC）It is a kind of by fuel
The TRT of electric energy is converted into 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 is higher shared by bipolar plates, between typically constitute from fuel cell cost 60~70%.
Ideal bipolar plates should be electricity, the good conductor of heat, have a good mechanical performance, and good gas barrier properties are relatively low close
Degree, the features such as good corrosion resistance.In common PEMFC, flow field and pole plate can be integral or splits.Mesh
The research and application of preceding bipolar plates are concentrated mainly on sheet of metallic material, moulded timber flitch and graphite material plate, these three bipolar plates
It is each advantageous：1st, metal material bipolar plates high mechanical strength, good conductivity, impermeability is good, and weakness is corrosion-resistant；2nd, it is molded
Material bipolar plates, early stage, disposably input was big, needed to accept or reject between electric conductivity and intensity；3rd, graphite bi-polar plate, have good
Electric conductivity and corrosion resistance, weakness is low intensity, there is stomata, it is therefore desirable to improves the intensity of graphite material, fills up graphite material
The intrinsic irregular stomata of material, so as to reach the requirement of fuel cell pack.
Conventional graphite plate machining is still scheme the most frequently used in current fuel battery double plates, and graphite material is in itself
Porous breathable and the characteristic such as brittle, cause using graphite bi-polar plate
Pem fuel pile cost is very high, and reliability is relatively low.For fuel cell volume and weight demands not
High occasion, traditional graphite cake machining process still play an important role.
The content of the invention
The purpose of the present invention, it is solve above mentioned problem existing for prior art, there is provided a kind of new fuel cell graphite
The processing method of bipolar plates.
The present invention is carried out true using the fuel battery double plates of gained after impregnating agent shaping repressed to petroleum coke powder, roasting
Empty impregnating by pressure, then after baking processing is carried out to the fuel battery double plates after dipping, then the product after after baking is entered
Row graphitization processing, then graphite bipolar plate of fuel battery is machined out.
Described impregnating agent is the mixture of coal tar pitch and carbonaceous mesophase spherules, and mixed proportion is coal tar pitch：Mesocarbon
Microballoon=10:1~100:1.
Described vacuum pressed impregnation processability is that first bipolar plates are heated, then is put it into impregnating autoclave, then is taken out true
It is empty then to add above-mentioned impregnating agent to flooding bipolar plates completely to -0.07MPa~-0.1MPa, then impregnating autoclave is pressurizeed, soak
The stain time is 1 hour~24 hours.
The granularity of described carbonaceous mesophase spherules is 0.5 μm~30 μm.
Bipolar plates are heated to 200 DEG C~400 DEG C by being heated to be for described bipolar plates.
Described is 1MPa~20MPa to impregnating autoclave progress moulding pressure.
The beneficial effect that the present invention realizes：
As a result of new impregnating agent and special dipping method in the processing of the graphite bipolar plate of fuel battery of the present invention,
Thus make graphite bipolar plate of fuel battery that both to have there is excellent electric conductivity and corrosion resistance, again with higher mechanical strength with it is good
Good gas tightness, fully achieve the requirement of fuel cell.
Brief description of the drawings
Fig. 1 is the work flow schematic diagram of the present invention.
Embodiment
With reference to specific embodiment, embodiments of the present invention are expanded on further.It should be understood that these embodiments are only used for
Illustrate the present invention rather than limitation the scope of the present invention.In addition, it is to be understood that after the content of the invention lectured has been read, this
Art personnel can make various changes or modifications to the present invention, and these equivalent form of values equally fall within right appended by the application will
Seek book limited range.
Embodiment
1. using varigrained petroleum coke powder as raw material, grading is carried out in different proportions according to formula, is being sufficiently stirred
After kneading, it is placed on being molded in forming machine.
2. after shaped article is sufficiently cool, product is subjected to calcination process according to default heating curve.
3. impregnating agent needed for configuration, coal tar pitch in impregnating agent：Carbonaceous mesophase spherules=50:1, the granularity of carbonaceous mesophase spherules
Scope is 1~5 μm.
4. heating to the product after roasting, heating final temperature is 320 DEG C.
5. the said goods after heating are put into impregnating autoclave, to impregnating autoclave carry out vacuumize process, vacuum for-
0.08MPa, keeps vacuum state 30 minutes.
6. the impregnating agent configured is injected into impregnating autoclave, flood needs infusion product completely.
7. being pressurizeed to impregnating autoclave, moulding pressure 5MPa, the lower dip time that pressurizes is 4 hours.
8. calcination process is carried out according to default heating curve to the product after dipping.
9. graphitization processing is carried out to the product after roasting.
10. the product after graphitization is machined accordingly.
Claims (6)
- A kind of 1. new processing method of graphite bipolar plate of fuel battery, it is characterised in that：Petroleum coke powder is passed through using impregnating agent The fuel battery double plates of gained carry out vacuum pressed dipping after compressing, roasting, then to the fuel cell bipolar after dipping Plate carries out after baking processing, then the product after after baking is carried out into graphitization processing, then to graphite bipolar plate of fuel battery It is machined out.
- 2. the new processing method of graphite bipolar plate of fuel battery as claimed in claim 1, it is characterised in that：Described dipping Agent is the mixture of coal tar pitch and carbonaceous mesophase spherules, and mixed proportion is coal tar pitch：Carbonaceous mesophase spherules=10:1~100:1.
- 3. the new processing method of graphite bipolar plate of fuel battery as claimed in claim 1, it is characterised in that：The vacuum adds Pressure impregnation processability is first heats to bipolar plates, then puts it into impregnating autoclave, then be evacuated to -0.07MPa~- 0.1MPa, then impregnating agent as claimed in claim 2 is added to flooding bipolar plates completely, then impregnating autoclave is pressurizeed, impregnate Time is 1 hour~24 hours.
- 4. impregnating agent as claimed in claim 2, it is characterised in that：The granularity of described carbonaceous mesophase spherules is 0.5 μm~30 μ m。
- 5. impregnation processability method as claimed in claim 3, it is characterised in that：Bipolar plates are heated in being heated to be for the bipolar plates To 200 DEG C~400 DEG C.
- 6. impregnation processability method as claimed in claim 3, it is characterised in that：Described is 1MPa to impregnating autoclave progress moulding pressure ~20Mpa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711136118.7A CN107887612B (en) | 2017-11-16 | 2017-11-16 | Processing method of graphite bipolar plate of fuel cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711136118.7A CN107887612B (en) | 2017-11-16 | 2017-11-16 | Processing method of graphite bipolar plate of fuel cell |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107887612A true CN107887612A (en) | 2018-04-06 |
| CN107887612B CN107887612B (en) | 2020-12-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711136118.7A Active CN107887612B (en) | 2017-11-16 | 2017-11-16 | Processing method of graphite bipolar plate of fuel cell |
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| CN (1) | CN107887612B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113497241A (en) * | 2020-03-18 | 2021-10-12 | 广州汽车集团股份有限公司 | Carbon/carbon composite material, fuel cell bipolar plate, fuel cell and preparation method |
| CN115521143A (en) * | 2022-09-19 | 2022-12-27 | 中钢集团南京新材料研究院有限公司 | Method for efficiently preparing high-quality graphite bipolar plate and graphite bipolar plate |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113497241A (en) * | 2020-03-18 | 2021-10-12 | 广州汽车集团股份有限公司 | Carbon/carbon composite material, fuel cell bipolar plate, fuel cell and preparation method |
| CN115521143A (en) * | 2022-09-19 | 2022-12-27 | 中钢集团南京新材料研究院有限公司 | Method for efficiently preparing high-quality graphite bipolar plate and graphite bipolar plate |
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| Publication number | Publication date |
|---|---|
| CN107887612B (en) | 2020-12-01 |
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Effective date of registration: 20190911 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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