CN102420335A - Assembling method of self-breathing type direct alcohol fuel cell - Google Patents
Assembling method of self-breathing type direct alcohol fuel cell Download PDFInfo
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- CN102420335A CN102420335A CN2011103276645A CN201110327664A CN102420335A CN 102420335 A CN102420335 A CN 102420335A CN 2011103276645 A CN2011103276645 A CN 2011103276645A CN 201110327664 A CN201110327664 A CN 201110327664A CN 102420335 A CN102420335 A CN 102420335A
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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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Abstract
The invention discloses an assembling method of a self-breathing type direct alcohol fuel cell; the assembling method comprises the following steps of: respectively sheathing a first sealing ring and a second sealing ring in a U-shaped groove of a negative plate and a U-shaped groove of a positive plate; placing a positive current collector, a membrane electrode compound body, a negative current collector and the negative plate sheathed with the first sealing ring in a first groove of the positive plate to form a compound polar plate; placing the compound polar plate in a second groove of a fuel storage cavity to form the self-breathing type direct alcohol fuel cell after compressing. The sealing rings do not contain organic solvent, thereby the pollution to a proton exchange membrane is avoided, and the performance and the service life of the battery are ensured. The sealing rings have good sealing effect, are simple in assembly technique and can realize the independent assembly of each membrane electrode assembly (MEA); and electrodes do not mutually affect, are easy to disassemble and are suitable of volume production. In addition, the sealing effect of the solid sealing rings in the assembling method can be immediately checked after the cell is assembled, and therefore, the assembling time is reduced.
Description
Technical field
The present invention relates to the fuel cell technology field, more particularly, relate to the assembly method of the direct alcohol fuel battery of a kind of self-respiration type.
Background technology
Fuel cell is a kind of device that chemical energy is converted into electric energy through electrochemical reaction.1839, Gove proposed the notion of fuel cell first, and in recent years, fuel cell has obtained increasing concern as a kind of energy conversion device of efficient pollution-free.Because there is the problem of secure context in hydrogen oxygen fuel cell, therefore, adopt the fuel cell of liquid fuels such as methyl alcohol, formic acid developed.Compare with gaseous fuel, liquid fuel is easy to storage and transportation, has higher energy conversion efficiency, is eco-friendly green energy resource.
The direct alcohol fuel battery of self-respiration type adopts PEM as electrolyte, directly adopts low-carbon alcohols such as methyl alcohol, ethanol to act as a fuel, and directly converts the chemical energy that is stored in fuel and the oxidant into electric energy.This fuel cell is directly exposed to negative electrode in the natural air; Airborne oxygen reaches cathode catalysis layer through diffusion transmission forms such as concentration difference diffusion and cross-ventilations and carries out electrochemical reducting reaction; Need not battery auxiliary equipment and heating systems such as methyl alcohol peristaltic pump, air pump; Thereby reduced the energy consumption and the production cost of battery itself, simplified the fuel cell structure system, made the weight and volume of battery system realize microminiaturization.Advantages such as the direct alcohol fuel battery of self-respiration type has energy transformation ratio height, environmental friendliness, electricity generation system is simple, energy density is high, convenient, flexible have broad application prospects at small portable portable power source and sensor field.
Sealing property is the important performance that influences the direct alcohol fuel battery of self-respiration type, and traditional assembly method generally adopts the fluid sealant sealing, is specially: when using the fluid sealant sealing, between two electrodes, be coated with one deck fluid sealant, avoid being in contact with one another between each electrode.But owing to contain organic solvent in the fluid sealant, like this, PEM inevitably can receive pollution to a certain degree, all can produce very big influence to the performance and life-span of battery.Secondly,, can not check the sealing effectiveness of the direct alcohol fuel battery of self-respiration type at once, increase installation time because sealing glue solidifying needs certain hour.
Summary of the invention
In view of this, the technical problem that the present invention will solve is to provide the assembly method of the direct alcohol fuel battery of a kind of self-respiration type, and the good sealing effect of this method can not produce PEM and pollute.
In order to solve above technical problem, the present invention provides the assembly method of the direct alcohol fuel battery of a kind of self-respiration type, may further comprise the steps:
Cathode plate and plate are provided, and the side of said cathode plate and the side of said plate are respectively arranged with U type groove, and the upper surface of said plate is provided with first groove that is complementary with said cathode plate;
First sealing ring and second sealing ring are enclosed within respectively in the U type groove of U type groove and said plate of said cathode plate;
Anode current collector net, film electrode composite element, cathode collector net and the said cathode plate that is with first sealing ring are placed in said first groove, compress the back and form compound polar plate;
Fuel storage with second groove chamber is provided, and said second groove and said compound polar plate are complementary, and said compound polar plate is placed in said second groove, compress the back and form the direct alcohol fuel battery of self-respiration type.
Preferably, the material of said cathode plate and plate independently is metal material, graphite material or polyimides separately.
Preferably, said first sealing ring and second sealing ring independently are the perfluor silica gel sealing ring separately.
Preferably, said anode current collector net and said cathode collector net independently are gold-plated stainless (steel) wire, gold-plated titanium net, plating palladium stainless (steel) wire or plating palladium titanium net separately.
Preferably, the PEM of said film electrode composite element is the perfluorinated sulfonic acid PEM.
Preferably, the cathode side electrode of said film electrode composite element comprises cathode catalysis layer and cathode diffusion layer.
Preferably, said cathode catalysis layer is platinum black eelctro-catalyst or carbon platinum-carrying electrocatalyst.
Preferably, the anode side electrode of said film electrode composite element comprises anode catalyst layer and anode diffusion layer.
Preferably, said anode catalyst layer is that platinum ruthenium black or carbon carry platinum-ruthenium electro-catalyst.
Preferably, said cathode diffusion layer and anode diffusion layer independently are carbon paper or carbon cloth separately.
The present invention provides the assembly method of the direct alcohol fuel battery of a kind of self-respiration type, with first sealing ring and second sealing ring respectively snare with the U type groove of the U type groove of cathode plate and plate in; Anode current collector net, film electrode composite element, cathode collector net and the said cathode plate that is with first sealing ring are placed in first groove of plate, form compound polar plate; Then said compound polar plate is placed in second groove in fuel storage chamber, compress the back and form the direct alcohol fuel battery of self-respiration type.Compared with prior art, the sealing circle does not contain organic solvent, has avoided the pollution to PEM, has guaranteed the performance and the useful life of battery.Secondly, the good sealing effect of sealing circle, assembly technology is simple, can realize all independent assembling of every film electrode composite element (MEA), can not interact between each electrode, and easy disassembling is fit to produce in batches.Once more, the solid-state sealing ring that the present invention adopts can be checked sealing effectiveness immediately after the battery assembling is accomplished, reduced installation time.
Description of drawings
Fig. 1 is the front view of the embodiment of the invention 1 disclosed cathode plate;
Fig. 2 is the left view of the embodiment of the invention 1 disclosed cathode plate;
Fig. 3 is the vertical view of the embodiment of the invention 1 disclosed cathode plate;
Fig. 4 is the front view of the embodiment of the invention 1 disclosed first sealing ring;
Fig. 5 is the front view of the plate of the embodiment of the invention 1 disclosed three monocells;
Fig. 6 is the left view of the plate of the embodiment of the invention 1 disclosed three monocells;
Fig. 7 is the vertical view of the plate of the embodiment of the invention 1 disclosed three monocells;
Fig. 8 is the front view of disclosed second sealing ring that is complementary with plates three monocells of the embodiment of the invention 1;
Fig. 9 is the front view of the plate of the embodiment of the invention 1 disclosed two monocells;
Figure 10 is the left view of the plate of the embodiment of the invention 1 disclosed two monocells;
Figure 11 is the vertical view of the plate of the embodiment of the invention 1 disclosed two monocells;
Figure 12 is the front view of disclosed second sealing ring that is complementary with plates two monocells of the embodiment of the invention 1;
Figure 13 is the front view of the fuel cell of the embodiment of the invention 1 preparation;
Figure 14 is the left view of the fuel cell of the embodiment of the invention 1 preparation;
Figure 15 is the vertical view of the fuel cell of the embodiment of the invention 1 preparation.
Embodiment
Carry out clear, intactly description in the face of the technical scheme in the embodiment of the invention down, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the present invention's protection.
The invention discloses the assembly method of the direct alcohol fuel battery of a kind of self-respiration type, may further comprise the steps:
Cathode plate and plate are provided, and the side of said cathode plate and the side of said plate are respectively arranged with U type groove, and the upper surface of said plate is provided with first groove that is complementary with said cathode plate;
First sealing ring and second sealing ring are enclosed within respectively in the U type groove of U type groove and said plate of said cathode plate;
Anode current collector net, film electrode composite element, cathode collector net and the said cathode plate that is with first sealing ring are placed in said first groove, compress the back and form compound polar plate;
Fuel storage with second groove chamber is provided, and said second groove and said compound polar plate are complementary, and said compound polar plate is placed in said second groove, compress the back and form the direct alcohol fuel battery of self-respiration type.
The operation principle of DMFC is: methanol aqueous solution is through anode reaction, and the proton of generation is moved to negative electrode through PEM, and electronics is delivered to negative electrode through external circuit, and carbon dioxide is discharged from anode export under acidic electrolyte bath helps.Cathodic region at DMFC; Oxygen or air are after the cathode flow field plate uniform distribution; Through (being electrochemical cathode active reaction zone) in cathode diffusion layer diffusion and the entering cathode catalysis layer; Under the effect of catalyst, generate water with the proton generation electrochemical reducting reaction of coming, and discharge from cathode outlet with reaction end gas from the anode migration.
The total weight of cathode plate and plate is generally 70%～80% of fuel cell weight, and it is about 60% to occupy production cost, and major function is: isolate fully and the uniform distribution battery in fuel and oxidant; Good electrical conductivity is collected and conduction current; Good thermal conductance, effectively cool batteries group; Transmission generates water, moisture; Realize the connection of the monocell in the battery pack.Consideration in view of the above-mentioned functions aspect; Bipolar plate material and cathode plate material and plate material should have good electrical conductivity and chemical stability; And high mechanical properties and hypotonicity etc., the cathode plate that the present invention adopts and the material of plate are preferably independent separately to be metal material, graphite material or polyimides.
According to the present invention, the side of said cathode plate is provided with U type groove, and said U type groove is breakthrough status, and this U type groove and first sealing ring are complementary, and promptly the length and width of first sealing ring and thickness etc. are complementary with U type groove respectively.Then, first sealing ring is enclosed within the U type groove of said cathode plate.Said first sealing ring preferably adopts the perfluor silica gel sealing ring, and this perfluor silica gel sealing ring has higher homogenieity, and the surface is difficult for infiltration, cracking and produces pin hole etc., has good sealing property.
On the other hand; The upper surface of the anode substrate that the present invention adopts is provided with first groove that is complementary with said cathode plate; Promptly the degree of depth of first groove is identical with the thickness of cathode plate, and length and the width with cathode plate is identical respectively with width for first groove length.Then, anode current collector net, film electrode composite element, cathode collector net and the said cathode plate that is with first sealing ring are placed in said first groove, compress the back and form compound polar plate.For the present invention; One or more first grooves can be set on the said anode substrate; The i.e. anode substrate of the anode substrate of 1 monocell or a plurality of monocells, the formation compound polar plate thereby cathode plate that can a plurality of sizes are identical or different and anode substrate are assembled together.
In the step of preparation compound polar plate, the present invention has adopted the sealing ring that does not contain organic solvent, the good sealing effect of sealing circle; Assembly technology is simple; Can realize all independent assembling of every film electrode composite element (MEA), can not interact easy disassembling between each electrode; Assemble up efficient and conveniently, be fit to produce in batches.
Said anode current collector net, film electrode composite element and cathode collector net are the necessary parts of the direct alcohol fuel battery of self-respiration type; In the present invention, said anode current collector net and said cathode collector net independently are preferably gold-plated stainless (steel) wire, gold-plated titanium net, plating palladium stainless (steel) wire or plating palladium titanium net separately; PEM in the said film electrode composite element is preferably the perfluorinated sulfonic acid PEM; The cathode side electrode of said film electrode composite element preferably includes cathode catalysis layer and cathode diffusion layer, and said cathode catalysis layer is preferably platinum black or carbon platinum-carrying electrocatalyst, and said cathode diffusion layer is preferably carbon paper or carbon cloth; The anode side electrode of said film electrode composite element preferably includes anode catalyst layer and anode diffusion layer, and said anode catalyst layer is preferably the platinum ruthenium black or carbon carries platinum-ruthenium electro-catalyst, and said anode diffusion layer is preferably carbon paper or carbon cloth.
In the assembling process of fuel cell, comprise also second sealing ring is enclosed within the step in the U type groove of said plate that above-mentioned steps can be accomplished forming between the compound polar plate, also can completion after forming compound polar plate.Before forming compound polar plate, to accomplish is example; Second sealing ring is enclosed within the U type groove of said plate; Then anode current collector net, film electrode composite element, cathode collector net and the said cathode plate that is with first sealing ring are placed in said first groove, compress the back and form compound polar plate.Perhaps, this step is accomplished after forming compound polar plate, promptly after forming compound polar plate, second sealing ring is enclosed within the U type groove of said plate.Said second sealing ring preferably adopts the perfluor silica gel sealing ring, and this perfluor silica gel sealing ring has higher homogenieity, and the surface is difficult for infiltration, cracking and produces pin hole etc., has good sealing property.
In addition; The present invention also provides the chamber of the fuel storage with second groove; Said second groove and said compound polar plate are complementary, and promptly the degree of depth of second groove is identical with the thickness of plate, and length and the width with plate is identical respectively with width for the length of second groove.For the present invention, said fuel storage chamber can be provided with one or more second grooves, thereby one or more compound polar plates and said fuel storage chamber are assembled together.
First sealing ring and second sealing ring that the present invention adopts itself have good sealing property; In addition, can better guarantee sealing property through crimp to first sealing ring and second sealing ring to battery.
Compared with prior art, the present invention adopts sealing ring that fuel cell is sealed, and the sealing circle does not contain organic solvent, has avoided the pollution to PEM, has guaranteed the performance and the useful life of battery.Secondly, the good sealing effect of sealing circle, assembly technology is simple; Can realize all independent assembling of every film electrode composite element (MEA), can not interact dismounting easily between each electrode; If there is electrode to go wrong, can handle separately, can not have influence on other electrodes; Workload when greatly reducing assembling is fit to produce in batches.Once more, the solid-state sealing ring that the present invention adopts can be checked sealing effectiveness immediately after the battery assembling is accomplished, reduced installation time.
In order to further specify technical scheme of the present invention; Below in conjunction with embodiment the preferred embodiment of the invention is described; Describe just to further specifying feature and advantage of the present invention but should be appreciated that these, rather than to the restriction of claim of the present invention.
(11.0cm * 6.0cm * 4.0cm), adopt method of the present invention to seal, each monocell is of a size of 2.0cm * 2.5cm to the self-breathing direct methanol fuel cell that preparation is made up of 10 monocells.
Like Fig. 1, Fig. 2 and Fig. 3, Fig. 1 is the front view of the cathode plate of present embodiment employing; Fig. 1 is the left view of cathode plate; Fig. 3 is the vertical view of cathode plate; Fig. 4 is the front view of first sealing ring.
Repeat above-mentioned steps, prepare ten identical cathode plates.
Fig. 5 is the front view of the plate of three monocells of present embodiment employing; Fig. 6 is the left view of plate; Fig. 7 is the vertical view of plate; Fig. 8 is the front view of second sealing ring that is complementary with the plate of three monocells.
Anode current collector net, film electrode composite element, cathode collector net and three cathode plates 1 that are with first sealing ring 3 are placed in first groove 4, compress the back and form compound polar plate;
Repeat above-mentioned steps, the compound polar plate of two three monocells of preparation is enclosed within second sealing ring in the U type groove of the plate in the compound polar plate.
Fig. 9 is the front view of the plate of two monocells of present embodiment employing; Figure 10 is the left view of plate; Figure 11 is the vertical view of plate; Figure 12 is the front view of second sealing ring that is complementary with the plate of two monocells.
Plate 9 is provided, and the side of cathode plate 9 is provided with U type groove 10, and the upper surface of plate 9 is provided with two first grooves 8 that are complementary with cathode plate 1;
Anode current collector net, film electrode composite element, cathode collector net and two cathode plates 1 that are with first sealing ring 11 are placed in first groove 8, compress the back and form compound polar plate;
Repeat above-mentioned steps, the compound polar plate of two two monocells of preparation is enclosed within second sealing ring in the U type groove of the plate in the compound polar plate.
Figure 13 is the front view of the fuel cell of the present invention's preparation, and Figure 14 is the left view of fuel cell; Figure 15 is the vertical view of fuel cell.
Fuel storage chamber with four second grooves 13,17 is provided, and 12,14,18 represent fuel storage chamber cavity respectively; The compound polar plate of second groove and above-mentioned preparation is complementary;
With the compound polar plate of three monocells of above-mentioned preparation and the compound polar plate of three monocells, totally four compound polar plates 16 place in second groove respectively, compress the back and form the direct alcohol fuel battery 15 of self-respiration type.
To the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use the present invention.Multiple modification to these embodiment will be conspicuous concerning those skilled in the art, and defined General Principle can realize under the situation that does not break away from the spirit or scope of the present invention in other embodiments among this paper.Therefore, the present invention will can not be restricted to these embodiment shown in this paper, but will meet and principle disclosed herein and features of novelty the wideest corresponding to scope.
Claims (10)
1. the assembly method of the direct alcohol fuel battery of self-respiration type may further comprise the steps:
Cathode plate and plate are provided, and the side of said cathode plate and the side of said plate are respectively arranged with U type groove, and the upper surface of said plate is provided with first groove that is complementary with said cathode plate;
First sealing ring and second sealing ring are enclosed within respectively in the U type groove of U type groove and said plate of said cathode plate;
Anode current collector net, film electrode composite element, cathode collector net and the said cathode plate that is with first sealing ring are placed in said first groove, compress the back and form compound polar plate;
Fuel storage with second groove chamber is provided, and said second groove and said compound polar plate are complementary, and said compound polar plate is placed in said second groove, compress the back and form the direct alcohol fuel battery of self-respiration type.
2. assembly method according to claim 1 is characterized in that, the material of said cathode plate and plate independently is metal material, graphite material or polyimides separately.
3. assembly method according to claim 1 is characterized in that, said first sealing ring and second sealing ring independently are the perfluor silica gel sealing ring separately.
4. assembly method according to claim 1 is characterized in that, said anode current collector net and said cathode collector net independently are gold-plated stainless (steel) wire, gold-plated titanium net, plating palladium stainless (steel) wire or plating palladium titanium net separately.
5. assembly method according to claim 1 is characterized in that, the PEM of said film electrode composite element is the perfluorinated sulfonic acid PEM.
6. assembly method according to claim 1 is characterized in that, the cathode side electrode of said film electrode composite element comprises cathode catalysis layer and cathode diffusion layer.
7. assembly method according to claim 6 is characterized in that, said cathode catalysis layer is platinum black eelctro-catalyst or carbon platinum-carrying electrocatalyst.
8. assembly method according to claim 6 is characterized in that the anode side electrode of said film electrode composite element comprises anode catalyst layer and anode diffusion layer.
9. assembly method according to claim 8 is characterized in that, said anode catalyst layer is that platinum ruthenium black or carbon carry platinum-ruthenium electro-catalyst.
10. assembly method according to claim 8 is characterized in that, said cathode diffusion layer and anode diffusion layer independently are carbon paper or carbon cloth separately.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103276645A CN102420335B (en) | 2011-10-25 | 2011-10-25 | Assembling method of self-breathing type direct alcohol fuel cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103276645A CN102420335B (en) | 2011-10-25 | 2011-10-25 | Assembling method of self-breathing type direct alcohol fuel cell |
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| Publication Number | Publication Date |
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| CN102420335A true CN102420335A (en) | 2012-04-18 |
| CN102420335B CN102420335B (en) | 2013-12-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011103276645A Expired - Fee Related CN102420335B (en) | 2011-10-25 | 2011-10-25 | Assembling method of self-breathing type direct alcohol fuel cell |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114361552A (en) * | 2020-09-29 | 2022-04-15 | 浙江氢邦科技有限公司 | Symmetrical double-cathode structure battery and preparation method and discharging method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1270423A (en) * | 1999-04-13 | 2000-10-18 | 钟家轮 | Fuel batter with proton exchange film |
| CN2475144Y (en) * | 2001-04-13 | 2002-01-30 | 上海神力科技有限公司 | Sealer for fuel cell unit |
| CN1531761A (en) * | 2001-06-12 | 2004-09-22 | ס�ѵ�����ҵ��ʽ���� | Cell frame for redox flow cell and redox flow cell |
| CN101043080A (en) * | 2007-04-29 | 2007-09-26 | 春兰(集团)公司 | Fuel battery membrane electrode |
-
2011
- 2011-10-25 CN CN2011103276645A patent/CN102420335B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1270423A (en) * | 1999-04-13 | 2000-10-18 | 钟家轮 | Fuel batter with proton exchange film |
| CN2475144Y (en) * | 2001-04-13 | 2002-01-30 | 上海神力科技有限公司 | Sealer for fuel cell unit |
| CN1531761A (en) * | 2001-06-12 | 2004-09-22 | ס�ѵ�����ҵ��ʽ���� | Cell frame for redox flow cell and redox flow cell |
| CN101043080A (en) * | 2007-04-29 | 2007-09-26 | 春兰(集团)公司 | Fuel battery membrane electrode |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114361552A (en) * | 2020-09-29 | 2022-04-15 | 浙江氢邦科技有限公司 | Symmetrical double-cathode structure battery and preparation method and discharging method thereof |
| CN114361552B (en) * | 2020-09-29 | 2024-02-09 | 浙江氢邦科技有限公司 | Symmetrical double-cathode structure battery and preparation method and discharging method thereof |
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| CN102420335B (en) | 2013-12-18 |
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