CN206907857U - Button-shaped DMFC - Google Patents
Button-shaped DMFC Download PDFInfo
- Publication number
- CN206907857U CN206907857U CN201720762064.4U CN201720762064U CN206907857U CN 206907857 U CN206907857 U CN 206907857U CN 201720762064 U CN201720762064 U CN 201720762064U CN 206907857 U CN206907857 U CN 206907857U
- 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.)
- Expired - Fee Related
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Classifications
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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
Abstract
The utility model 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 inlet and outlet are provided with described cell cover, gas-liquid separation membrane is provided with described fuel inlet and outlet.The utility model provides a kind of button-shaped DMFC pollution-free, simple in construction, cost is low, assembling use is simple, volumetric specific power density is high.
Description
Technical field
The utility model belongs to fuel liquid battery field, and in particular to be a kind of button-shaped direct methanol fuel electricity
Pond.
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 the processing of discarded traditional button cell is bad that serious pollution can be caused 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 a manner 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
Pond long lifespan, specific power and it is higher than energy the advantages that.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 not easy
Control, and the volume of fuel cell is increased after application bolt, reduce the volumetric specific power of active area ratio and battery
Density.
Utility model content
The defects of the purpose of this utility model is to overcome existing fuel liquid battery bolt to encapsulate, there is provided a kind of button-shaped
DMFC.
The utility model 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 transversal gross area of described 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 inlet and outlet are provided with described cell cover, gas-liquid separation membrane is placed with described fuel inlet and outlet.
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 utility model are：
Structure in the utility model is circle, is easy to alignment to assemble and encapsulate.And it is mostly side in traditional structure
Shape and periphery be provided with bolt hole, in assembled battery part placement alignment more has inconvenience.
The elastic conductive component that the utility model is set in the fuel cavity of anode, described elastic conductive component have good
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 preferred scheme of the present utility model.When punching press encapsulates, battery
Upper lid can produce certain deformation, after encapsulation terminates, cell cover meeting recovered part deformation, if the elastic conductive component bullet
Property deficiency, then be likely to result in deformation process in battery between each component interface especially anode metal current collector layer and cell cover
It can not be in close contact and produce very big contact resistance.
In addition, when tools for bolts ' pretension is used 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 for causing conventional bolt encapsulation battery and cross-sectional area
Add, volume can also increase therewith.The utility model uses button-shaped structure, and macromolecule is extruded using battery lower casing and cell cover
Insulating barrier deformation is packaged.Effective active area ratio is significantly larger than conventional bolt envelope in button-shaped DMFC
Packed battery, so as to considerably increase the volumetric specific power density of battery.And during punching press encapsulation, the uniform force of battery, encapsulation
Simple and fast.
Meanwhile as preferable, anode metal current collector layer area shape is identical with anode diffusion layer, is also sealed with seal washer
Firmly, short circuit phenomenon will not also both be produced without anode diffusion layer and anode metal current collector layer contact area is reduced.
In a word, the utility model offer one kind is pollution-free, simple in construction, cost is low, assembling uses simple, volumetric specific power
The high button-shaped DMFC of density.
Brief description of the drawings
Fig. 1 is the sectional view of the button-shaped DMFC of the utility model；
Fig. 2 is the isometric cutaway view of the button-shaped DMFC of the utility model；
Fig. 3,4 be the button-shaped DMFC of the utility model exploded perspective view；
Fig. 5 shows the part dimension and Catalytic Layer size and traditional spiral shell of the button-shaped DMFC of the utility model
The part dimension of bolt methanol fuel cell is schemed with Catalytic Layer size comparison；
Fig. 6 shows the voltage-current curve and power-current of button-shaped DMFC in the utility model
Curve.
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 the technical solution of the utility model, below in conjunction with the accompanying drawings
The utility model is described in further detail with most preferred 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.Preferably, it can be two.Fig. 1 shows that the diameter dimension of battery lower casing is
19.8mm, the integral thickness of battery are 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, preferably two 0.5 × 4 × 5mm (string diameter × external diameter × original height) in the present embodiment
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 inlet and outlet 13, described fuel inlet and outlet on be 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 traditional spiral shell of the button-shaped DMFC of the utility model
The part dimension of bolt methanol fuel cell is schemed with Catalytic Layer size comparison.It can be seen that Catalytic Layer in button-shaped structure
Area and battery the transversal gross area the ratio between be 65.3%, and in traditional structure the area of Catalytic Layer and battery it is transversal total
Area the ratio between be 28.3%.Active catalytic aspect product of the present utility model and the ratio of the described transversal gross area of battery are more than
65%, and area is effectively catalyzed in button-shaped DMFC than than effective catalysis area in traditional structure than high
Go out 2.3 times.
The filled black curve that Fig. 6 shows to obtain in the present embodiment is the electric piezo-electric of button-shaped DMFC
Flow curve, it 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。
Encapsulation principle of the present utility model encapsulates for punching press, and polymeric dielectric layer 2 is by top pressure and anode metal collection
The gasket seal 5 in fluid layer ring week forces together；Polymeric dielectric layer 2 is also extruded by ring week battery lower casing simultaneously, macromolecule
Insulating barrier deformation makes cell cover be fixed together with lower casing.Gasket seal 5 plays sealing and fixation.Cell cover 1 by
To pressure and make 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 force together with battery lower casing 9.Cathode diffusion layer 7, anode diffusion layer 6, cathode catalysis layer 10, anode catalyst layer 12 and proton
Exchange membrane 11 forms membrane electrode.
When cell cover 1 and battery lower casing 9 connect load, methanol fuel cell electric discharge work, from the injection of fuel inlet and outlet 13
Methanol solution 15 to fuel cavity is evenly distributed in by anode metal current collector layer 4 upper surface of anode diffusion layer 6, Ran Houtong
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, which float to the top of fuel cavity 16, to be assembled, and passes through gas-liquid separation membrane 17 from fuel inlet and outlet 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 advantages of general principle and principal character of the present utility model and the utility model has been shown and described above.One's own profession
The technical staff of industry is it should be appreciated that the utility model is not limited to the embodiments described above, in above-mentioned embodiment and specification
Description simply illustrates principle of the present utility model, and on the premise of the spirit and scope of the utility model is not departed from, this practicality is new
Type also has various changes and modifications, and these changes and improvements are both fallen within claimed the scope of the utility model, this practicality
New claimed scope is by appended claims 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 inlet and outlet are equipped with, gas-liquid separation membrane is placed with described fuel inlet and outlet.
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 |
|---|---|---|---|
| CN201720762064.4U CN206907857U (en) | 2017-06-28 | 2017-06-28 | Button-shaped DMFC |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720762064.4U CN206907857U (en) | 2017-06-28 | 2017-06-28 | Button-shaped DMFC |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206907857U true CN206907857U (en) | 2018-01-19 |
Family
ID=61291788
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720762064.4U Expired - Fee Related CN206907857U (en) | 2017-06-28 | 2017-06-28 | Button-shaped DMFC |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206907857U (en) |
-
2017
- 2017-06-28 CN CN201720762064.4U patent/CN206907857U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180119 Termination date: 20190628 |