CN112786909B - Ceramic composite bipolar plate for hydrogen fuel cell - Google Patents
Ceramic composite bipolar plate for hydrogen fuel cell Download PDFInfo
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- CN112786909B CN112786909B CN202011504376.8A CN202011504376A CN112786909B CN 112786909 B CN112786909 B CN 112786909B CN 202011504376 A CN202011504376 A CN 202011504376A CN 112786909 B CN112786909 B CN 112786909B
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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
- H01M8/0223—Composites
- H01M8/0226—Composites in the form of mixtures
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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
- H01M8/0206—Metals or alloys
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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
- H01M8/0206—Metals or alloys
- H01M8/0208—Alloys
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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
- H01M8/0215—Glass; Ceramic materials
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- 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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- 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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- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Composite Materials (AREA)
- Fuel Cell (AREA)
Abstract
The invention discloses a ceramic composite bipolar plate for a hydrogen fuel cell, which is prepared from the following components in parts by weight, and the conductivity and the corrosion resistance of the composite are improved simultaneously; the stainless steel fibers have good corrosion resistance, and the blend is added with the stainless steel fibers, so that the bipolar plate has better corrosion resistance; the ceramic powder, the stainless steel fiber and the powdered aluminum are mixed with each other, so that the bipolar plate is convenient to manufacture, the production cost of the bipolar plate is reduced, and the bipolar plate can be produced in batch; the prepared bipolar plate has better conductivity and corrosion resistance.
Description
Technical Field
The invention belongs to the technical field of bipolar plates, particularly relates to a ceramic composite bipolar plate for a hydrogen fuel cell, and more particularly relates to a ceramic composite bipolar plate for a hydrogen fuel cell and a preparation method thereof.
Background
The bipolar plate (also called as a clapboard) has the functions of providing a gas channel, preventing the hydrogen and the oxygen in the cell gas chamber from communicating with each other, and establishing a current path between the anode and the cathode which are connected in series; the thickness of the bipolar plate should be as thin as possible while maintaining a certain mechanical strength and good gas barrier effect to reduce the conductive resistance to current and heat.
Proper surface treatment is required to be carried out on the bipolar plate; the conductivity is good after the nickel plating treatment on the anode side of the bipolar plate, and the bipolar plate is not easy to be wetted by electrolyte, so that the loss of the electrolyte can be avoided; the flexible contact of the electrolyte membrane with the bipolar plate outside the active area of the electrodes effectively prevents the gas from leaking out, the so-called "wet seal"; in order to reduce the corrosion of molten carbonate on stainless steel at the wet seal part, the frame of the bipolar plate needs to be subjected to aluminizing protection treatment.
The traditional bipolar plate is easy to corrode in the using process, and non-conductive oxide films are formed on the surfaces of stainless steel and titanium, so that the contact resistance is increased, and energy is wasted; the cost of manufacturing bipolar plates is relatively high and is not suitable for mass production.
Disclosure of Invention
The invention aims to provide a ceramic composite bipolar plate for a hydrogen fuel cell, which aims to solve the problems that the traditional bipolar plate is easy to corrode in the using process, and non-conductive oxide films are formed on the surfaces of stainless steel and titanium to increase the contact resistance and waste energy; the cost for manufacturing the bipolar plate is relatively high, and the bipolar plate is not suitable for mass production.
In order to achieve the purpose, the invention adopts the technical scheme that:
the ceramic composite bipolar plate for the hydrogen fuel cell is prepared from the following components in parts by weight, and the electric conductivity and the corrosion resistance of the composite are improved.
As a further scheme of the invention, three materials with different sizes are used as the conductive filler, namely stainless steel fibers, granular aluminum filler and powdered ceramic, wherein the stainless steel fibers account for nine percent of the total weight of the composite material, the granular aluminum filler accounts for fifteen percent of the total weight of the composite material, and the powdered ceramic accounts for sixty-five percent of the total weight of the composite material.
As a further scheme of the invention, the novel acrylic acid is used as a bonding agent, the novel acrylic acid accounts for nine percent of the total weight of the composite material, and the benzoyl peroxide and lauroyl peroxide account for two percent of the total weight of the composite material by using the benzoyl peroxide and the lauroyl peroxide as initiators.
As a further aspect of the invention, the stainless steel fibers have an average particle size of ten microns.
As a further aspect of the invention, the particulate aluminum filler has an average particle size of one hundred and six microns.
As a further aspect of the present invention, the powdered ceramic has an average particle size of seventy microns.
A preparation method of a ceramic composite bipolar plate for a hydrogen fuel cell specifically comprises the following steps:
the method comprises the following steps: firstly, welding bottom corners at four corners of the bottom surface of a crusher, welding a discharging plate at the middle part of the bottom surface of the crusher through a support, pouring metal aluminum fragments into the crusher through a feeding hole for crushing, then pouring ceramic fragments into the crusher through a feeding plate for crushing, crushing the metal aluminum fragments for three hours by the crusher, and crushing the ceramic fragments for two hours by the crusher to obtain granular aluminum filler and powdery ceramic;
step two: then, weighing stainless steel fibers, granular aluminum filler, powdery ceramic, novel acrylic acid and benzoyl peroxide and lauroyl peroxide respectively according to the weight percentages of nine stainless steel fibers, fifteen powdery ceramic, sixty-five powdery ceramic, nine novel acrylic acid and two lauroyl peroxide;
step three: then respectively adding the granular aluminum filler, the powdered ceramic and the stainless steel fiber into a mixing barrel in sequence, pouring a novel acrylic acid type adhesive into the mixing barrel, adding benzoyl peroxide and lauroyl peroxide as initiators, mixing, and mixing the obtained blend by adopting ultrasonic waves for ten minutes;
step four: and finally, drying the blend in vacuum for twelve hours under the condition of seventy-five degrees, putting the dried blend into a groove of a template, and then downwards moving through a pressing rod to enable the pressing plate to press and mold the blend, and demolding and accommodating the molded bipolar plate.
Compared with the prior art, the invention has the following beneficial effects:
1. the ceramic powder is added into the bipolar plate, so that the production cost problem of producing the bipolar plate is solved, the production cost of producing the bipolar plate is reduced, the production process is simple, sintering is easy, the resistivity of the conductive ceramic can be adjusted by changing the formula and the process, the repeatability is good, the yield is high, and the bipolar plate has good market application prospect;
2. because the metal fibers have the same diameter, the longer the fibers, namely the larger the length-diameter ratio, the better the conductivity under the condition of the same filling amount, the stainless steel fibers are added into the bipolar plate, so that the conductivity efficiency of the bipolar plate is increased;
3. the granular aluminum and the stainless steel fiber are added into the bipolar plate to be mixed together, the stainless steel fiber and the granular aluminum are used together, the dispersion performance can be improved, the conductive effect is improved, the corrosion resistance of the stainless steel fiber is good, and the corrosion of the bipolar plate can be reduced in the using process.
Drawings
FIG. 1 is a schematic view of the bipolar plate fabrication of the present invention;
FIG. 2 is a schematic representation of the stirring reaction of the blends of the present invention;
FIG. 3 is a schematic view of the pulverizer;
FIG. 4 is a schematic view of the mixing barrel;
fig. 5 is a schematic diagram of the template.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-2, the present invention provides a ceramic composite bipolar plate for a hydrogen fuel cell, which is prepared from the following components and materials in weight ratio, and improves the electrical conductivity and corrosion resistance of the composite material;
three materials with different sizes are used as conductive fillers, namely stainless steel fibers, granular aluminum fillers and powdered ceramics, wherein the stainless steel fibers account for 9% of the total weight of the composite material, the granular aluminum fillers account for 15% of the total weight of the composite material, and the powdered ceramics account for 65% of the total weight of the composite material; the novel acrylic acid is used as a bonding agent, the novel acrylic acid accounts for 9% of the total weight of the composite material, the benzoyl peroxide and the lauroyl peroxide are used as initiators, and the benzoyl peroxide and the lauroyl peroxide account for 2% of the total weight of the composite material; the average grain diameter of the stainless steel fiber is 10 microns; the average particle size of the particulate aluminum filler was 106 microns; the mean particle size of the powdered ceramic was 70 microns.
A preparation method of a ceramic composite bipolar plate for a hydrogen fuel cell specifically comprises the following steps:
the method comprises the following steps: firstly, welding bottom corners 5 at four corners of the bottom surface of a crusher 2, welding a discharging plate 4 at the middle part of the bottom surface of the crusher 2 through a support 3, pouring metal aluminum fragments into the crusher 2 through a feeding hole 6 for crushing, pouring ceramic fragments into the crusher 2 through a feeding plate 1 for crushing, crushing the metal aluminum fragments for three hours by the crusher 2, and crushing the ceramic fragments for two hours by the crusher to obtain granular aluminum filler and powdery ceramic;
step two: then, respectively weighing the stainless steel fiber accounting for 9 percent of the total weight of the composite material, the granular aluminum filler accounting for 15 percent of the total weight of the composite material, the powdered ceramic accounting for 65 percent of the total weight of the composite material, the novel acrylic acid accounting for 9 percent of the total weight of the composite material, and the benzoyl peroxide and the lauroyl peroxide accounting for 2 percent of the total weight of the composite material;
step three: then respectively adding the granular aluminum filler, the powdered ceramic and the stainless steel fiber into a mixing barrel 7 in sequence, pouring a novel acrylic type adhesive into the mixing barrel, adding benzoyl peroxide and lauroyl peroxide as initiators, mixing, and mixing the obtained blend by adopting ultrasonic waves for 10 minutes;
step four: and finally, drying the blend in vacuum for 12 hours at 75 ℃, putting the dried blend into a groove 8 of a template 9, and then moving downwards through a pressing rod 11, so that the blend is subjected to compression molding by a pressing plate 10, and the molded bipolar plate is demolded and accommodated.
According to the invention, through the arrangement, firstly, the metal aluminum fragments and the ceramic fragments are respectively crushed in sequence by the crusher, the metal aluminum fragments are crushed for three hours by the crusher, the ceramic fragments are crushed for two hours by the crusher to obtain granular aluminum filler and powdered ceramic, and the metal aluminum fragments and the ceramic fragments are fully crushed by the crusher, so that the conductive efficiency of the bipolar plate is improved; then, respectively weighing the stainless steel fiber accounting for 9 percent of the total weight of the composite material, the granular aluminum filler accounting for 15 percent of the total weight of the composite material, the powdered ceramic accounting for 65 percent of the total weight of the composite material, the novel acrylic acid accounting for 9 percent of the total weight of the composite material, and the benzoyl peroxide and the lauroyl peroxide accounting for 2 percent of the total weight of the composite material; then, respectively adding the granular aluminum filler, the powdered ceramic and the stainless steel fiber into the novel acrylic type adhesive in sequence, adding benzoyl peroxide and lauroyl peroxide as initiators, mixing, and mixing the obtained blend by adopting ultrasonic waves for 10 minutes, so that the uniformity of the blend is improved; and finally, carrying out vacuum drying on the blend, drying for 12 hours at 75 ℃, then carrying out compression molding on the blend, demolding and storing the molded bipolar plate, and improving the stability of the blend through high-temperature drying so that the gap between the filling particles is reduced, the internal defects are reduced, and the bipolar plate is more corrosion-resistant.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (5)
1. A ceramic composite bipolar plate for a hydrogen fuel cell is characterized in that: the composite material comprises: conductive fillers, binders and initiators;
wherein the conductive filler is three different sized materials; the method comprises the following steps:
stainless steel fibers at 9% by total weight of the composite, particulate aluminum filler at 15% by total weight of the composite, and powdered ceramic at 65% by total weight of the composite;
further comprising: the binder is acrylic acid accounting for 9 percent of the total weight of the composite material;
the initiator is benzoyl peroxide and lauroyl peroxide accounting for 2 percent of the total weight of the composite material;
the composite material is prepared from the components in parts by weight, and the conductivity and the corrosion resistance of the composite material are improved.
2. The ceramic composite bipolar plate for a hydrogen fuel cell according to claim 1, wherein: the stainless steel fibers had an average particle size of 10 microns.
3. The ceramic composite bipolar plate for a hydrogen fuel cell according to claim 1, wherein: the particulate aluminum filler had an average particle size of 106 microns.
4. The ceramic composite bipolar plate for a hydrogen fuel cell according to claim 1, wherein: the powdered ceramic has an average particle size of 70 microns.
5. The preparation method of the ceramic composite bipolar plate for the hydrogen fuel cell as claimed in claim 1, wherein the preparation method specifically comprises the following steps:
the method comprises the following steps: firstly, welding bottom corners (5) at four corners of the bottom surface of a crusher (2), welding a discharging plate (4) at the middle part of the bottom surface of the crusher (2) through a support (3), pouring metal aluminum fragments into the crusher (2) through a feeding hole (6) for crushing, pouring ceramic fragments into the crusher (2) through a feeding plate (1) for crushing, crushing the metal aluminum fragments for three hours by the crusher (2), and crushing the ceramic fragments for two hours to obtain granular aluminum filler and powdery ceramic;
step two: then, respectively weighing the stainless steel fiber accounting for 9 percent of the total weight of the composite material, the granular aluminum filler accounting for 15 percent of the total weight of the composite material, the powdered ceramic accounting for 65 percent of the total weight of the composite material, the novel acrylic acid accounting for 9 percent of the total weight of the composite material, and the benzoyl peroxide and the lauroyl peroxide accounting for 2 percent of the total weight of the composite material;
step three: then respectively adding the granular aluminum filler, the powdered ceramic and the stainless steel fiber into a mixing barrel (7) in sequence, pouring an acrylic adhesive into the mixing barrel, adding benzoyl peroxide and lauroyl peroxide as initiators, mixing, and mixing the obtained blend by adopting ultrasonic waves for 10 minutes;
step four: and finally, drying the blend in vacuum for 12 hours at 75 ℃, putting the dried blend into a groove (8) of a template (9), and downwards moving a pressing rod (11) to press and mold the blend by a pressing plate (10), and demolding and storing the molded bipolar plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011504376.8A CN112786909B (en) | 2020-12-18 | 2020-12-18 | Ceramic composite bipolar plate for hydrogen fuel cell |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011504376.8A CN112786909B (en) | 2020-12-18 | 2020-12-18 | Ceramic composite bipolar plate for hydrogen fuel cell |
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| Publication Number | Publication Date |
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| CN112786909A CN112786909A (en) | 2021-05-11 |
| CN112786909B true CN112786909B (en) | 2022-04-12 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113823807A (en) * | 2021-11-25 | 2021-12-21 | 北京理工大学深圳汽车研究院(电动车辆国家工程实验室深圳研究院) | Composition, composite conductive ceramic bipolar plate thereof and preparation method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1591941A (en) * | 2003-09-05 | 2005-03-09 | 中国科学院大连化学物理研究所 | Fuel cell composite material double polar plate and its making method |
| CN101017903A (en) * | 2007-01-16 | 2007-08-15 | 武汉理工大学 | Dual-electrode plate for Ti3SiC2/graphite proton exchange film fuel battery and its preparing method |
| CN102290582A (en) * | 2011-06-20 | 2011-12-21 | 华南理工大学 | Stainless steel fiber felt used for fuel battery bipolar plate and manufacturing method thereof |
| CN105406092A (en) * | 2015-11-04 | 2016-03-16 | 四川大学 | Composite material for bipolar plate of fuel cell and preparation method of composite material |
| CN111556888A (en) * | 2018-01-09 | 2020-08-18 | 东亚合成株式会社 | Adhesive composition, and battery material, lithium ion battery material, heat-fusible member, and lithium ion battery packaging material using same |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016046295A1 (en) * | 2014-09-26 | 2016-03-31 | Sandvik Intellectual Property Ab | A bipolar fuel cell plate |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1591941A (en) * | 2003-09-05 | 2005-03-09 | 中国科学院大连化学物理研究所 | Fuel cell composite material double polar plate and its making method |
| CN101017903A (en) * | 2007-01-16 | 2007-08-15 | 武汉理工大学 | Dual-electrode plate for Ti3SiC2/graphite proton exchange film fuel battery and its preparing method |
| CN102290582A (en) * | 2011-06-20 | 2011-12-21 | 华南理工大学 | Stainless steel fiber felt used for fuel battery bipolar plate and manufacturing method thereof |
| CN105406092A (en) * | 2015-11-04 | 2016-03-16 | 四川大学 | Composite material for bipolar plate of fuel cell and preparation method of composite material |
| CN111556888A (en) * | 2018-01-09 | 2020-08-18 | 东亚合成株式会社 | Adhesive composition, and battery material, lithium ion battery material, heat-fusible member, and lithium ion battery packaging material using same |
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