CN107195929A - Button-shaped DMFC - Google Patents
Button-shaped DMFC Download PDFInfo
- Publication number
- CN107195929A CN107195929A CN201710505527.3A CN201710505527A CN107195929A CN 107195929 A CN107195929 A CN 107195929A CN 201710505527 A CN201710505527 A CN 201710505527A CN 107195929 A CN107195929 A CN 107195929A
- Authority
- CN
- China
- Prior art keywords
- anode
- button
- shaped
- layer
- dmfc
- Prior art date
- 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.)
- Granted
Links
- 239000000446 fuel Substances 0.000 claims abstract description 39
- 238000009792 diffusion process Methods 0.000 claims abstract description 34
- 239000002184 metal Substances 0.000 claims abstract description 29
- 229910052751 metal Inorganic materials 0.000 claims abstract description 29
- 239000003054 catalyst Substances 0.000 claims abstract description 11
- 239000007788 liquid Substances 0.000 claims abstract description 9
- 239000012528 membrane Substances 0.000 claims abstract description 7
- 230000008676 import Effects 0.000 claims abstract description 6
- 238000000926 separation method Methods 0.000 claims abstract description 6
- 238000006555 catalytic reaction Methods 0.000 claims description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 6
- 229910052799 carbon Inorganic materials 0.000 claims description 6
- 239000004744 fabric Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 239000006260 foam Substances 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 2
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 21
- 230000003197 catalytic effect Effects 0.000 description 8
- 238000005538 encapsulation Methods 0.000 description 8
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 5
- 230000005611 electricity Effects 0.000 description 4
- 229960004424 carbon dioxide Drugs 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000004080 punching Methods 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 229910002090 carbon oxide Inorganic materials 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- GPRLSGONYQIRFK-UHFFFAOYSA-N hydron Chemical compound [H+] GPRLSGONYQIRFK-UHFFFAOYSA-N 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000003487 electrochemical reaction Methods 0.000 description 1
- 238000001595 flow curve Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- XLYOFNOQVPJJNP-ZSJDYOACSA-N heavy water Substances [2H]O[2H] XLYOFNOQVPJJNP-ZSJDYOACSA-N 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- 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
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04082—Arrangements for control of reactant parameters, e.g. pressure or concentration
- H01M8/04186—Arrangements for control of reactant parameters, e.g. pressure or concentration of liquid-charged or electrolyte-charged reactants
-
- 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
- H01M8/10—Fuel cells with solid electrolytes
- H01M8/1009—Fuel cells with solid electrolytes with one of the reactants being liquid, solid or liquid-charged
- H01M8/1011—Direct alcohol fuel cells [DAFC], e.g. direct methanol fuel cells [DMFC]
-
- 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
Landscapes
- 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 belongs to fuel liquid battery field, and in particular to be a kind of button-shaped DMFC, including anode unit, PEM and the cathode electrode unit set from top to bottom is circular configuration；Described anode unit includes cell cover, fuel cavity, anode metal current collector layer, anode diffusion layer and the anode catalyst layer set from top to bottom；Elastic conductive component is provided with described fuel cavity；Fuel import and export are provided with described cell cover, described fuel is imported and exported and is provided with gas-liquid separation membrane.A kind of pollution-free, simple in construction, cost of present invention offer is low, assembling uses the high button-shaped DMFC of simple, volumetric specific power density.
Description
Technical field
The invention belongs to fuel liquid battery field, and in particular to be a kind of button-shaped DMFC.
Background technology
Develop with the continuous innovation of microelectric technique, the renewal for not catching up with electronic product gradually of common button cell is changed
Generation, if while discarded traditional button cell processing is bad to cause serious pollution to environment.And direct methanol fuel is electric
The reaction of the oxygen in methanol fuel and air in pond is not combustion reaction, but by methanol fuel in the way of electrochemical reaction
The chemical energy of middle storage is directly changed into the electric energy for being transported to external circuit.The reaction product of DMFC is water and two
Carbonoxide, pollution will not be produced to environment.So DMFC has pollution-free, high conversion efficiency, starts fast, electricity
The advantages of pond long lifespan, specific power and high specific energy.Countries in the world such as Japan, Germany, the U.S. is all in in-depth study fuel electricity
Pond.Domestic and international DMFC used is nearly all encapsulated with bolt at present, and encapsulation process is cumbersome, and encapsulation pressure is difficult
The volume of fuel cell is increased after control, and application bolt, the volumetric specific power of active area ratio and battery is reduced
Density.
The content of the invention
It is an object of the invention to overcome the defect of existing fuel liquid battery bolt encapsulation button-shaped directly there is provided one kind
Methanol fuel cell.
The present invention to achieve the above object, using following technical scheme：
A kind of button-shaped DMFC, including place from top to bottom and be circular configuration anode unit,
PEM and cathode electrode unit；Described anode unit includes cell cover, fuel cavity, the anode gold placed from top to bottom
Belong to current collector layer, anode diffusion layer and anode catalyst layer；Elastic conductive component is placed with described fuel cavity.
Described elastic conductive component can be for 1 or multiple.
Described positive and negative pole Catalytic Layer and the ratio of the described transversal gross area of battery are more than 65%.
Described cathode electrode unit include place from bottom to top battery lower casing, cathodic metal current collector layer, cathode diffusion layer with
And cathode catalysis layer.
The ring Zhou Jun of described anode metal current collector layer, anode diffusion layer and cathode diffusion layer is placed with seal washer.
There is polymeric dielectric layer between described cell cover and described anode metal current collector layer.
Fuel import and export are provided with described cell cover, described fuel is imported and exported and is placed with gas-liquid separation membrane.
Described cathode diffusion layer and the material of anode diffusion layer can be carbon paper, carbon cloth or foam metal.
Compared with prior art, the beneficial effects of the invention are as follows：
Structure in the present invention is circle, is easy to alignment to assemble and encapsulate.And in traditional structure mostly for it is square simultaneously
And periphery is provided with bolt hole, in assembled battery, the placement alignment of part inconvenience.
The elastic conductive component that the present invention is set in the fuel cavity of anode, described elastic conductive component has good
Corrosion resistance, electric conductivity and the ability for keeping pressure, so as to reduce the contact resistance in battery between each component interface.Therefore
The elastic conductive component of stainless steel has been selected in the preferred scheme of the present invention.When punching press is encapsulated, cell cover can be produced
Raw certain deformation, after encapsulation terminates, cell cover meeting recovered part deformation, if elastic conductive component elasticity is not enough,
Then it is likely to result in deformation process in battery that especially anode metal current collector layer and cell cover can not be tight between each component interface
Contiguity is touched and produces very big contact resistance.
In addition, when using tools for bolts ' pretension in conventional package, in order to ensure that cell internal pressure is uniform, cell cover, collection
Fluid layer and fuel cavity can all use thicker structure, and this increases the thickness and cross-sectional area that cause conventional bolt to encapsulate battery
Plus, volume can also increase therewith.The present invention uses button-shaped structure, and polymer insulation is extruded using battery lower casing and cell cover
Layer deformation is packaged.Effective active area ratio is significantly larger than conventional bolt encapsulation electricity in button-shaped DMFC
Pond, so as to considerably increase the volumetric specific power density of battery.And during punching press encapsulation, the uniform force of battery, encapsulation is simple
Fast.
Meanwhile, as preferred, anode metal current collector layer area shape is identical with anode diffusion layer, is also sealed with seal washer
Firmly, anode diffusion layer and anode metal current collector layer contact area had not both been reduced, short circuit phenomenon will not be also produced.
In a word, a kind of pollution-free, simple in construction, cost of present invention offer is low, assemble using simple, volumetric specific power density
High button-shaped DMFC.
Brief description of the drawings
Fig. 1 is the sectional view of button-shaped DMFC of the invention；
Fig. 2 is the isometric cutaway view of button-shaped DMFC of the invention；
Fig. 3,4 be button-shaped DMFC of the invention exploded perspective view；
Fig. 5 shows the part dimension and Catalytic Layer size and conventional bolt first of button-shaped DMFC of the invention
The part dimension of alcohol fuel battery is schemed with Catalytic Layer size comparison；
Fig. 6 shows that the voltage-current curve of button-shaped DMFC and power-current are bent in the present invention
Line.
Wherein：1- cell covers, 2- polymeric dielectric layers, 3- elastic conductive components, 4- anode metal current collector layers, 5- sealings
Packing ring, 6- anode diffusion layers, 7- cathode diffusion layers, 8- cathodic metal current collector layers, 9- battery lower casings, 10- cathode catalysis layers, 11-
PEM, 12- anode catalyst layers, 13- fuel gas outlet, the minute bubbles of 14- generations, 15- methanol fuel solution, 16- combustions
Expect chamber, 17- gas-liquid separation membranes.
Embodiment
In order that those skilled in the art more fully understand technical scheme, below in conjunction with the accompanying drawings and most
The present invention is described in further detail for good embodiment.
Fig. 1-4 shows a kind of button-shaped DMFC, it is characterised in that including the anode set from top to bottom
Unit, PEM 11 and cathode electrode unit；Described anode unit includes cell cover 1, the fuel set from top to bottom
Chamber 16, anode metal current collector layer 4, anode diffusion layer 6 and anode catalyst layer 12；Elastic conduction is provided with described fuel cavity
Element 3.Polymeric dielectric layer 2 is provided between described cell cover 1 and described anode metal current collector layer 4.Described elasticity
Conducting element can be for 1 or multiple.It is preferred that, can be two.Fig. 1 shows that the diameter dimension of battery lower casing is
19.8mm, the integral thickness of battery is 3.9mm, and the diameter dimension of fuel cavity is 16.5mm, cathode catalysis layer, anode catalyst layer,
The diameter dimension of cathode diffusion layer, anode diffusion layer and anode current collector layer is 16mm.Because parallel circuit can reduce resistance, together
When thickness in view of battery in itself, in the present embodiment preferably two 0.5 × 4 × 5mm (string diameter × external diameter × original height)
Spring conducting element.
Described cathode electrode unit includes battery lower casing 9, cathodic metal current collector layer 8, the cathode diffusion layer 7 set from bottom to top
And cathode catalysis layer 9.Described anode metal current collector layer and the material of cathodic metal current collector layer are to plate TiN coatings not
Become rusty steel metal wire netting or stainless steel plate.Thickness in view of fuel cavity in button DMFC and totality
Thickness, the stainless steel cloth for 60 mesh that we select, described anode metal current collector layer, anode diffusion layer and negative electrode diffusion
Layer is provided with seal washer 5 ring week, and described anode metal current collector layer and described anode diffusion layer are in the same size.It is described
Cell cover on be provided with fuel and import and export 13, described fuel is imported and exported and is provided with gas-liquid separation membrane 17.Described the moon
The material of pole diffusion layer and anode diffusion layer can be carbon paper, carbon cloth or foam metal.
Fig. 5 shows the part dimension and Catalytic Layer size and conventional bolt first of button-shaped DMFC of the invention
The part dimension of alcohol fuel battery is schemed with Catalytic Layer size comparison.It can be seen that in button-shaped structure Catalytic Layer face
Product and the transversal gross area of battery the ratio between be 65.3%, and in traditional structure the area of Catalytic Layer and battery the transversal gross area
The ratio between be 28.3%.The active catalytic aspect of the present invention accumulates the ratio with the described transversal gross area of battery more than 65%, and
Effectively catalysis area than effective catalysis area ratio in traditional structure than that can be higher by 2.3 in button-shaped DMFC
Times.
Fig. 6 shows the electric piezo-electric that the filled black curve obtained in the present embodiment is button-shaped DMFC
Flow curve, is not filled by curve and represents power-current curve.By curve it can be seen that the maximum power output of battery is
20.5mW.According to Fig. 1 size, the volume of battery is 1.2cm3, then volumetric specific power density is 17.1mW/cm3。
The encapsulation principle of the present invention encapsulates for punching press, and polymeric dielectric layer 2 is by top pressure and anode metal current collector layer
The gasket seal 5 in ring week forces together；Polymeric dielectric layer 2 is also extruded by all battery lower casings of ring simultaneously, polymer insulation
Layer deformation makes cell cover be fixed together with lower casing.Gasket seal 5 plays sealing and fixation.What cell cover 1 was subject to
Pressure simultaneously makes the compressive deformation of elastic conductive component 3 and to the pressure of anode meshs 4, by anode metal current collector layer 4, anode diffusion
Layer 5, anode catalyst layer 12, PEM 11, cathode catalyst layer 10, cathode diffusion layer 7, cathodic metal current collector layer 8 with
Battery lower casing 9 forces together.Cathode diffusion layer 7, anode diffusion layer 6, cathode catalysis layer 10, anode catalyst layer 12 and proton exchange
Film 11 constitutes membrane electrode.
When cell cover 1 and battery lower casing 9 connect load, methanol fuel cell electric discharge work is imported and exported 13 from fuel and injected
Methanol solution 15 to fuel cavity is evenly distributed in the upper surface of anode diffusion layer 6, Ran Houtong by anode metal current collector layer 4
The loose structure for crossing anode diffusion layer 6 is evenly distributed in the surface of anode catalyst layer 12, in the reaction of anode catalyst layer 12 generation two
Carbonoxide minute bubbles 14, hydrogen ion and electronics：CH3OH+H2O→CO2+6H++6e-, while the oxygen in air passes through battery lower casing
9 hole and cathodic metal current collector layer 8 and cathode diffusion layer 7 uniformly reaches cathode catalysis layer, and passes through dispatch from foreign news agency from anode
Road imports the electronics of negative electrode and from anode through the hydrogen ion of PEM reaction generation water：O2+4e-+4H+→2H2O.Anode
The carbon dioxide minute bubbles of reaction generation float to the aggregation of the top of fuel cavity 16, and pass through gas-liquid separation membrane 17 from fuel import and export 13
Discharge, and fuel is blocked in fuel cavity 16.The water of negative electrode generation passes through cathode diffusion layer 7, cathodic metal current collector layer 8 and electricity
The hole discharge of pond lower casing 9.
The general principle and principal character and advantages of the present invention of the present invention has been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the embodiments described above, and described in above-mentioned embodiment and specification is to say
Bright principle of the invention, without departing from the spirit and scope of the present invention, various changes and modifications of the present invention are possible, this
A little changes and improvements all fall within the protetion scope of the claimed invention, and claimed scope of the invention is by appended claim
Book and its equivalent thereof.
Claims (8)
1. a kind of button-shaped DMFC, it is characterised in that including placing from top to bottom and being circular configuration
Anode unit, PEM and cathode electrode unit；Described anode unit includes cell cover, the fuel placed from top to bottom
Chamber, anode metal current collector layer, anode diffusion layer and anode catalyst layer；Elastic conductive component is placed with described fuel cavity.
2. button-shaped DMFC according to claim 1, it is characterised in that described elastic conductive component
Can be for 1 or multiple.
3. button-shaped DMFC according to claim 1, it is characterised in that the activity of described battery is urged
Change area and the transversal gross area of described battery the ratio between be more than 65%.
4. button-shaped DMFC according to claim 1, it is characterised in that described cathode electrode unit includes
Battery lower casing, cathodic metal current collector layer, cathode diffusion layer and the cathode catalysis layer placed from bottom to top.
5. button-shaped DMFC according to claim 1, it is characterised in that described anode metal afflux
The ring Zhou Jun of layer, anode diffusion layer and cathode diffusion layer is placed with seal washer.
6. button-shaped DMFC according to claim 1, it is characterised in that described cell cover and institute
There is polymeric dielectric layer between the battery lower casing stated.
7. button-shaped DMFC according to claim 1, it is characterised in that set on described cell cover
Fuel import and export are equipped with, described fuel is imported and exported and is placed with gas-liquid separation membrane.
8. button-shaped DMFC according to claim 1, it is characterised in that described cathode diffusion layer with
And the material of anode diffusion layer can be carbon paper, carbon cloth or foam metal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710505527.3A CN107195929B (en) | 2017-06-28 | 2017-06-28 | Button type direct methanol fuel cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710505527.3A CN107195929B (en) | 2017-06-28 | 2017-06-28 | Button type direct methanol fuel cell |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107195929A true CN107195929A (en) | 2017-09-22 |
| CN107195929B CN107195929B (en) | 2024-01-30 |
Family
ID=59881573
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710505527.3A Active CN107195929B (en) | 2017-06-28 | 2017-06-28 | Button type direct methanol fuel cell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107195929B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110492157A (en) * | 2019-07-29 | 2019-11-22 | 天津科技大学 | Tubular methanol fuel cell |
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| CN110492157A (en) * | 2019-07-29 | 2019-11-22 | 天津科技大学 | Tubular methanol fuel cell |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107195929B (en) | 2024-01-30 |
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