CN205723784U - A kind of DMFC using collection electrodiffusion composite bed - Google Patents
A kind of DMFC using collection electrodiffusion composite bed Download PDFInfo
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- CN205723784U CN205723784U CN201620564653.7U CN201620564653U CN205723784U CN 205723784 U CN205723784 U CN 205723784U CN 201620564653 U CN201620564653 U CN 201620564653U CN 205723784 U CN205723784 U CN 205723784U
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- current collection
- dmfc
- composite bed
- diffusion
- housing
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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
This utility model provides a kind of DMFC using collection electrodiffusion composite bed, including housing, methanol crossover vaporization component, some battery cells, described housing is the cylindrical member that one end is closed, described methanol crossover vaporization component is arranged in described housing, the opening part of described housing seals and is provided with end cap, described end cap is provided with steam vent and the liquid injection hole of band sealing-plug, described battery cell is the most uniformly fixed on the periphery wall of described housing by outer stationary plates and screw, it is evenly equipped with array of circular apertures on the periphery wall that described outer stationary plates and described housing contact with battery cell.This utility model overcomes the shortcoming that tradition DMFC bipolar plates cost is high, greatly reduces the weight and volume of battery simultaneously, and set of cells assembly and disassembly are convenient；Substantially increase summation watt rating ratio and the mass-power ratio of battery.Connected mode between battery cell is flexible, it is possible to achieve serial or parallel connection, excellent working performance.
Description
Technical field
This utility model relates to a kind of fuel cell, specifically uses the direct methanol fuel electricity of current collection-diffusion composite bed
Pond.
Background technology
Energy demand and environmental conservation are the 21 century subject matter that faces of the whole world.The energy is the dynamic of the national economic development
Power, is also to weigh overall national strength, degree of national civilization and the important indicator of living standards of the people.Fuel cell is a kind of by lasting
Chemical energy in the fuel of supply and oxidant continuously changes into the electrochemical appliance of electric energy.The most extensively closed
That notes surely belongs to DMFC (Direct Methanol Fuel Cell is called for short DMFC).Traditional DMFC is flat board
Formula, its typical structure includes anode fuel chamber, bipolar plates and membrane electrode assembly.The advantage of flat DMFC is simple in construction, system
Facilitating, monocell power is big, but also has following shortcomings simultaneously: the power-mass ratio of (1) battery is low, bipolar plates and
The quality of membrane electrode it is far longer than for the bolt of fastening and the metallic plate quality of both sides；(2) bipolar plates is in electrochemical reaction
Ambiance in there is serious corrosion phenomenon.So currently mainly using graphite or gold-plated bipolar plate of stainless steel, but
Bipolar plates cost is high, it is difficult to commercialization；(3) seal difficulty, be especially assembled into the when of battery single in view of each
The Sealing Stress of battery and bipolar plates wants uniformity.(4) bipolar plate runner is narrow, brings a lot of being stranded for hydro-thermal management
Difficulty, the water of generation can not be discharged in time, be affected gas transfer.
In view of the disadvantages mentioned above of flat DMFC, research worker starts to turn one's attention to the development of tubulose DMFC, its base
Present principles is the same with flat DMFC, but structurally owing to being cylindrical, volume can reduce, the volumetric specific power of battery
Can increase than power with quality, this is significant to reduction battery pile volume and quality.There is a small amount of low power tube at present
The report of shape Proton Exchange Membrane Fuel Cells, but owing to there is no the tubular film of commercialization, need self manufacture tubular film electrode,
Usual way is to place an electrode within plane PEM both sides, then they is wrapped on cylindrical matrix, and anode exists
In, negative electrode outside, carries out hot pressing after compressing with mould and obtains tubular film electrode.Such manufacture method is the most loaded down with trivial details, and urges
Agent layer easily cracks during bending and even peels off, and therefore can be substantially reduced the performance of membrane electrode.Meanwhile, tubulose
A DMFC performance major reason not as good as flat DMFC is that tubular film electrode difficulty fits tightly with collector plate, causes it to contact
Resistance increases, and output declines.
Utility model content
The purpose of this utility model be to provide one can overcome drawbacks described above, be prone to seal and assembling, service behaviour excellent
Good Tubular Direct Methanol Fuel Cell.Its technical scheme is as follows:
A kind of DMFC using current collection-diffusion composite bed, including housing, methanol crossover vaporization component,
Some battery cells, described housing is the cylindrical member that one end is closed, and described methanol crossover vaporization component is arranged in described housing,
The opening part of described housing seals and is provided with end cap, and described end cap is provided with steam vent and the liquid injection hole of band sealing-plug, described electricity
Pond monomer is the most uniformly fixed on the periphery wall of described housing by outer stationary plates and screw, described outer stationary plates and described
It is evenly equipped with array of circular apertures on the periphery wall that housing contacts with battery cell.
Further, described battery cell includes current collection-diffusion combined membrane electrode assembly, and described current collection-diffusion is multiple
Box-like membrane electrode assembly includes that coated on both sides has the PEM of catalyst layer, is fixed on PEM both sides symmetrically
Current collection-diffusion composite bed, described current collection-diffusion composite bed ecto-entad includes conductive coating, supporting layer, microporous layers successively,
Described conductive coating connects wire.Current collection-diffusion composite bed is equivalent to be combined with each other current collection layer with diffusion layer, formation
Composite construction not only can realize the effect of collected current but also can realize the effect of diffusion layer, by current collection-diffusion composite bed be coated with
The PEM of catalyst is fixed together and i.e. can be made into membrane electrode assembly.
Further, the material therefor of described housing is light weight, uncorruptible resin.
Further, described methanol crossover vaporization component is the hollow tubular structure that sintered porous material is made, two ends
It is connected with housing bottom and end cap inner wall sealing respectively.
Further, described methanol crossover vaporization component periphery wall also sets up the metal light wall pipe with opening array, just
In the evaporation rate controlling methanol.
Further, porous material, the CO that reaction produces it are provided with in described steam vent2Can arrange from steam vent
Going out, methanol steam then can liquefy, and time battery operated, steam vent is discharging CO2While can reclaim methanol, it is to avoid first
The waste of alcohol.
Further, described porous material includes cotton fiber.
Further, each battery cell is parallel with one another by wire or outwards powers after series connection, thus meets battery to greatly
Voltage or the requirement of High-current output.
Relative to prior art, this utility model has the advantage that
(1) have employed current collection-diffusion combined membrane electrode, overcome tradition DMFC bipolar plates cost high
Shortcoming, simultaneously battery container use light weight resin material, greatly reduce the weight and volume of battery, improve battery
Mass-power ratio and summation watt rating ratio.
(2) membrane electrode is that the current collection-diffusion composite bed of CCM type, anode and negative electrode can be general, it is not necessary to prepare respectively, letter
Change production procedure, reduce production cost.
(3) inside battery devises infiltration evaporation assembly, it is possible to achieve high concentration methanol solution even M100 fuel supplies
Give.The steam vent with gas liquid separating function is discharging CO2While can reclaim methanol, it is to avoid the waste of methanol.
(4) multi-disc membrane electrode can be pasted in cylindrical housings, serial or parallel connection between each piece of membrane electrode, can be formed, thus
Meet battery to big voltage or the requirement of High-current output.
Accompanying drawing explanation
Fig. 1 is the cross-sectional schematic of this utility model embodiment.
Fig. 2 is the current collection-diffusion combined membrane electrode assembly structural representation of this utility model embodiment.
Fig. 3 is battery cell parallel connection schematic diagram (the A-A sectional view of Fig. 1 omits screw).
Fig. 4 is battery cell series connection schematic diagram (the A-A sectional view of Fig. 1 omits screw).
Shown in figure it is: 1, end cap；2, housing；3, infiltration evaporation assembly；4, collection electrodiffusion composite bed；5, proton exchange
Film；6, outer stationary plates；7, screw；8, wire；9, steam vent；10, liquid injection hole；11, sealing-plug；12, conductive coating；13, support
Layer；14, microporous layers；15, catalyst layer.
Detailed description of the invention
With specific embodiment, utility model purpose of the present utility model is described in further detail below in conjunction with the accompanying drawings,
Embodiment can not repeat one by one at this, but the most therefore embodiment of the present utility model is defined in following example.
As it is shown in figure 1, a kind of DMFC using current collection-diffusion composite bed, ooze including housing 2, methanol
Thoroughly 3, six battery cells of vaporization component, the cylindrical member that described housing 2 is closed for one end, material therefor is light weight, the most perishable
Resin.Described methanol crossover vaporization component 3 is arranged in described housing 2, its hollow tubular made for sintered porous material
Structure, two ends respectively with bottom housing 2 and end cap 1 inner wall sealing is connected.The opening part of described housing 2 seals and is provided with end cap 1,
Described end cap 1 is provided with the liquid injection hole 10 of steam vent 9 and band sealing-plug 11, and six battery cells are by outer stationary plates 6 and screw 7
The most uniformly being fixed on the periphery wall of described housing 2, described outer stationary plates 6 and described housing 2 contact with battery cell
Periphery wall on be evenly equipped with array of circular apertures.
During assembled battery, it is followed successively by housing 2, current collection-diffusion combined membrane electrode assembly, outer stationary plates 6 from the inside to the outside, logical
Cross screw 7 to be fixed by each several part.Methanol solution injecting infiltration evaporation assembly 3, is stoppered sealing-plug 11, methanol solution passes through
The capillarity of tube wall is vaporizated into methanol steam and diffuses to the anode reaction of membrane electrode participation battery, battery functions, respectively
End cap 1, housing 2 and methanol crossover vaporization component 3 is shared between individual battery cell.
As in figure 2 it is shown, described battery cell includes current collection-diffusion combined membrane electrode assembly, described current collection-diffusion is multiple
Box-like membrane electrode assembly includes that coated on both sides has the PEM 5 of catalyst layer 15, is fixed on PEM 5 liang symmetrically
The current collection of side-diffusion composite bed 4, described current collection-diffusion composite bed 4 ecto-entad includes conductive coating 12, supporting layer successively
13, microporous layers 14, described conductive coating 12 connects wire.The present embodiment eliminates the flow field of tradition DMFC
Plate/collector plate, current collection-diffusion composite bed 4 will be equivalent to be combined with each other current collection layer with diffusion layer, and the composite construction of formation was both
The effect that can realize collected current can realize again the effect of diffusion layer, by current collection-diffusion composite bed and the matter being coated with catalyst
Proton exchange is fixed together and i.e. can be made into membrane electrode assembly.
The preparation method of the current collection of the present embodiment-diffusion combined membrane electrode assembly, its supporting layer 13 material be carbon cloth or
Carbon nanotube paper, including step:
1, carbon cloth or supporting layer 13 that carbon nanotube paper is material are carried out hydrophobic treatment；
2, coat microporous layers 14 in supporting layer 13 side, do at conduction at supporting layer 13 opposite side conducting metal plated layer
Reason, obtains conductive coating 12；
3, carry out anticorrosion, improve the process of coating adhesion strength, obtain current collection-diffusion composite bed 4；
4, be fixed together formation collection by the current collection made-diffusion composite bed 4 and the PEM 5 containing catalyst layer 15
Electricity-diffusion combined membrane electrode.
The membrane electrode of the present embodiment is that CCM type, i.e. catalyst are prepared on film, and the current collection-diffusion of anode and negative electrode is combined
Layer can be general, it is not necessary to prepares respectively.
Meanwhile, described methanol crossover vaporization component 3 periphery wall also can be combined the metal light wall pipe with opening array, it is simple to
Control the evaporation rate of methanol.
It is provided with porous material, such as cotton fiber, the CO that reaction produces in described steam vent 92Can arrange from steam vent
Going out, methanol steam then can liquefy, and time battery operated, steam vent is discharging CO2While can reclaim methanol, it is to avoid first
The waste of alcohol.
Each battery cell is parallel with one another by wire 8 or outwards powers after series connection, thus meets battery to big voltage or big
The requirement of electric current output.As it is shown on figure 3, during parallel connection, the anode of each piece of membrane electrode is sequentially connected with the anode of adjacent membranes electrode, respectively
The negative electrode of block membrane electrode is sequentially connected with the negative electrode of adjacent membranes electrode, finally draws wire and is connected to load, with satisfied needs relatively
The occasion of High Output Current.As described in Figure 4, during series connection, the anode of each piece of membrane electrode and the negative electrode of adjacent membranes electrode are sequentially connected,
Finally draw wire and be connected to load, to meet the occasion of needs high voltage output.
Above-described embodiment of the present utility model is only for clearly demonstrating this utility model example, and is not
Restriction to embodiment of the present utility model.For those of ordinary skill in the field, on the basis of described above
On can also make other changes in different forms.Here without also cannot all of embodiment be given exhaustive.
All any amendment, equivalent and improvement etc. made within spirit of the present utility model and principle, should be included in this reality
Within novel scope of the claims.
Claims (8)
1. the DMFC using current collection-diffusion composite bed, it is characterised in that include that housing (2), methanol ooze
Vaporization component (3), some battery cells thoroughly, described housing (2) is the cylindrical member that one end is closed, described methanol crossover vaporization component
(3) being arranged in described housing (2), the opening part of described housing (2) seals and is provided with end cap (1), and described end cap (1) is provided with
The liquid injection hole (10) of steam vent (9) and band sealing-plug (11), described battery cell is by outer stationary plates (6) and screw (7) edge week
On the periphery wall being uniformly fixed on described housing (2), described outer stationary plates (6) and described housing (2) connect with battery cell
It is evenly equipped with array of circular apertures on the periphery wall touched.
Use the DMFC of current collection-diffusion composite bed the most as claimed in claim 1, it is characterised in that: described
Battery cell include that current collection-diffusion combined membrane electrode assembly, described current collection-diffusion combined membrane electrode assembly include two sides
The PEM (5) being coated with catalyst layer (15), the current collection-diffusion being fixed on PEM (5) both sides symmetrically are answered
Closing layer (4), described current collection-diffusion composite bed (4) ecto-entad includes conductive coating (12), supporting layer (13), micropore successively
Layer (14), described conductive coating (12) connects wire.
Use the DMFC of current collection-diffusion composite bed the most as claimed in claim 1, it is characterised in that: described
The material therefor of housing (2) is resin.
Use the DMFC of current collection-diffusion composite bed the most as claimed in claim 1, it is characterised in that: described
Methanol crossover vaporization component (3) be the hollow tubular structure that sintered porous material is made, two ends respectively with housing (2) bottom and
End cap (1) inner wall sealing connects.
5. the DMFC using current collection-diffusion composite bed as described in claim 1 or 4, it is characterised in that: institute
Methanol crossover vaporization component (3) periphery wall stated also sets up the metal light wall pipe with opening array.
Use the DMFC of current collection-diffusion composite bed the most as claimed in claim 1, it is characterised in that: described
Steam vent (9) in be provided with porous material.
Use the DMFC of current collection-diffusion composite bed the most as claimed in claim 6, it is characterised in that: described
Porous material include cotton fiber.
Use the DMFC of current collection-diffusion composite bed the most as claimed in claim 1, it is characterised in that: each electricity
Pond monomer by wire (8) parallel with one another or series connection after outwards power.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620564653.7U CN205723784U (en) | 2016-06-12 | 2016-06-12 | A kind of DMFC using collection electrodiffusion composite bed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620564653.7U CN205723784U (en) | 2016-06-12 | 2016-06-12 | A kind of DMFC using collection electrodiffusion composite bed |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205723784U true CN205723784U (en) | 2016-11-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620564653.7U Withdrawn - After Issue CN205723784U (en) | 2016-06-12 | 2016-06-12 | A kind of DMFC using collection electrodiffusion composite bed |
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| CN (1) | CN205723784U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105958095A (en) * | 2016-06-12 | 2016-09-21 | 华南理工大学 | Direct methanol fuel cell using current collection-diffusion composite layer |
| CN109830723A (en) * | 2019-01-21 | 2019-05-31 | 西安交通大学 | Accumulation of energy drives feed separation transmission direct methanol fuel cell and its working method |
| CN109888324A (en) * | 2019-01-21 | 2019-06-14 | 西安交通大学 | Longitudinal uniform flow field high-efficiency fuel cell and its working method |
-
2016
- 2016-06-12 CN CN201620564653.7U patent/CN205723784U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105958095A (en) * | 2016-06-12 | 2016-09-21 | 华南理工大学 | Direct methanol fuel cell using current collection-diffusion composite layer |
| CN105958095B (en) * | 2016-06-12 | 2018-05-15 | 华南理工大学 | A kind of direct methanol fuel cell using current collection-diffusion composite bed |
| CN109830723A (en) * | 2019-01-21 | 2019-05-31 | 西安交通大学 | Accumulation of energy drives feed separation transmission direct methanol fuel cell and its working method |
| CN109888324A (en) * | 2019-01-21 | 2019-06-14 | 西安交通大学 | Longitudinal uniform flow field high-efficiency fuel cell and its working method |
| CN109888324B (en) * | 2019-01-21 | 2022-06-07 | 西安交通大学 | High-efficiency fuel cell with longitudinal uniform flow field and working method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20161123 Effective date of abandoning: 20180515 |