CN201812887U - Portable anode flow field board for direct methanol fuel cell - Google Patents
Portable anode flow field board for direct methanol fuel cell Download PDFInfo
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- CN201812887U CN201812887U CN2010202180913U CN201020218091U CN201812887U CN 201812887 U CN201812887 U CN 201812887U CN 2010202180913 U CN2010202180913 U CN 2010202180913U CN 201020218091 U CN201020218091 U CN 201020218091U CN 201812887 U CN201812887 U CN 201812887U
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- methanol fuel
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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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Abstract
The utility model relates to a portable anode flow field board for direct methanol fuel cell, which takes graphite as materials, and adopts two sets of independent hollow runners as an air runner and a liquid runner respectively, wherein the wider runner is the liquid runner; one end of the liquid runner is the methanol solution inlet, and the other end is a reaction liquid outlet; the narrower runner is the air runner; two ports of the air runner are outlets for generated carbon dioxide gas and small amount of low-concentration methanol water solution after reaction. With the structural design, not only can carbon dioxide gas be expelled by virtue of pressure of liquid, the management of carbon dioxide can be effectively realized, but also directional smooth flowing of the methanol solution at the anode side can be realized, therefore, the utilization efficiency of the area of a catalyzing layer is improved. In the utility model, the platy design is adopted, the material is cheap and easy to obtain, and the runners are easy to process; the portable anode flow field board for the direct methanol fuel cell can be used for cells, and also can be used for galvanic piles; and under large current density operation, the feasibility, necessity and importance of the portable anode flow field board for the direct methanol fuel cell can be better highlighted particularly.
Description
Technical field
The utility model relates to a kind of portable direct methanol fuel cell anode flow field board.
Background technology
Direct methanol fuel cell (DMFC) is with its efficiency height, volume is little, simple in structure, characteristics such as low emission have huge potential application market and development prospect, especially be that fuel easily stores, carries and move with its fuel than more being had an optimistic view of by industry safely 80 ℃ of direct methanol fuel cell of moving below the temperature with the methanol solution, present stage has had how tame unit to prepare pile.The generation that scholars propose carbon dioxide may make the anode fluid volume increase 26 times, so anode carbon dioxide management is particularly important, especially under the heavy-current discharge situation, even can cause serious concentration polarization, become the controlled step of electrochemical reaction, have a strong impact on the pile discharge performance.And existing flow Field Design is all discharged carbon dioxide by the pressure differential of charging aperture and discharging opening, and efficient is lower.
Summary of the invention
At direct methanol fuel cell (or pile) anode carbon dioxide management, the utility model provides a kind of anode flow field board with smooth discharge carbon dioxide, reclaims the methanol solution of two kinds of variable concentrations behind the flow field of flowing through.
The utility model is a kind of portable direct methanol fuel cell anode flow field board, and its target is to provide independent gas flow for carbon dioxide in the flow field of anode-side.Concrete feature is that the flow-field plate material is a graphite, comprise runner 7 and runner 2, described runner 7 is that single snake runner constitutes the methanol solution liquid flow field, runner 2 is that independently parallel fluid channels is formed in the flow of carbon dioxide gas field that three dimensions is not connected with liquid flow field, flow channel for liquids 7 is alternate with gas flow 2, and with ridge 3 is that the boundary separates mutually, methanol solution enters flow channel for liquids 7 by port one, in the process by port 8 discharges, the carbon dioxide that reaction produces is discharged from exhaust outlet by gas flow 2.
A technical scheme of the present utility model is that above-mentioned exhaust outlet comprises port 5 and port 6.
Another technical scheme of the present utility model is hollow channel 9 connections that above-mentioned runner 2 passes through hollow out on plate body, described hollow channel 9 is embedded in the anode flow field graphite cake non-intersect with flow channel for liquids 7, and gas collects through hollow channel 9 by runner 2 and discharged by port one 0.
Another technical scheme of the present utility model is above-mentioned runner 7 wide 0.5mm～1.5mm, dark 0.2mm～1.5mm; Runner 2 wide 0.25mm～1.5mm, dark 0.2mm～3mm; Ridge 3 wide 0.2mm～1.5mm.
Advantage of the present utility model
This flow field plate structure has been broken the form of traditional flow field raw material and the common runner of product, be applicable to portable direct methanol fuel cell (pile) anode, methanol solution is not owing to there is the obstruction of carbon dioxide, the liquid flow field of can flowing through more smoothly arrives Catalytic Layer by diffusion layer and reacts, the carbon dioxide that produces can be collected in the gas flow under the pressure of liquid is come in infiltration and discharge, improved the utilance of methanol solution, especially in the heavy-current discharge process, can improve battery performance.
Description of drawings
Accompanying drawing 2 is the single pond gas flowfield and the liquid flow field stereo flow field plate structure schematic diagram of the utility model example.
Accompanying drawing 3 is the planar structure schematic diagram of accompanying drawing 2 flow-field plate.
Accompanying drawing 4 is accompanying drawing 2 flow-field plate structure on two sides schematic diagrames.
In the accompanying drawing: 1 is liquid flow field one port, can be the charging aperture (or discharging opening) of methanol solution, 2 is the gas flow groove of filling arbon dioxide gas, 3 is the liquid flow field ridge alternate with gas flowfield, and 4 is the graphite matrix flow-field plate, and 5,6 are the gas flowfield outlet, 7 is single snake stream groove of methanol solution, 8 is the liquid flow field another port, and 9 for being communicated with the hollow channel of gas flowfield, and 10 is the port of hollow channel 9.
Embodiment
Adopting graphite cake is flow-field plate 4, the machining hollow out degree of depth is that to make flow channel for liquids 7 and the 0.5mm of groove width 1mm behind the 1mm wide, dark is the gas flow 2 of 1mm, ridge 3 wide 0.5mm then, methanol solution enters flow channel for liquids 7 by port one, in the process by port 8 discharges, there is pressure differential in liquid between two ports, then, the infiltration of part methanol solution is passed diffusion layer and is entered Catalytic Layer reaction generation carbon dioxide, and the methanol aqueous solution that the carbon dioxide of generation and minute quantity concentration are extremely low is compressed into gas flow 2 by reactant liquor by diffusion layer, from port 5,6 discharge, to finish mass transfer, the methanol solution of recyclable two kinds of variable concentrations of while.
The anode liquid flow field all can adopt different forms with cathode flow field, and as single snake-like, how snakelike, parallel shape etc., but the anodic gas flow field is traditionally arranged to be parallel fluid channels so that gas is discharged battery system by minimum pressure differential.
Embodiment 2
Adopting graphite cake is flow-field plate 4, and it is wide to process the flow channel for liquids 7 and the 0.25mm that make groove width 0.5mm after the hollow out degree of depth is 0.2mm respectively in described graphite cake both sides, is the gas flow 2 of 0.2mm deeply, then ridge 3 wide 0.2mm.Port one is made and is broken into the hole perpendicular to flow-field plate and make methanol solution enter flow channel for liquids 7, port 8 is also made perpendicular to flow-field plate and is broken into the remaining methanol solution of hole discharge reaction, the carbon dioxide and the extremely low methanol aqueous solution of minute quantity concentration that produce are compressed into gas flow 2 by reactant liquor by diffusion layer, port 5,6 also made perpendicular to flow-field plate break into the hole, finish mass transfer to discharge product.
This anode flow field board is designed to bipolar plates and makes pile, the port one of liquid flow field, 8 and gas flowfield outlet 5,6 places all can punch respectively with other bipolar plates realization pile material transmission channels of connect.
Embodiment 3
For reducing the flow field invalid, the single pond of direct methanol fuel cell anode flow field board can be designed to double-deck and three-dimensional disjoint liquid flow field 7 and gas flowfield 2 as shown in Figure 2, flow channel for liquids is 7 wide * and be 1.5mm * 1.5mm deeply, gas flow is 2 wide * and be 1.5mm * 3mm deeply, ridge 3 is wide to be 1.5mm, the hollow channel 9 that belongs to gas flowfield connects whole gas flow 2, and with gas flow 2 bottom lands, port one 0 as shown in Figure 4 is long * wide be 10mm * 0.5mm, the passage 9 that then embeds in the flow-field plate is 1mm with flow channel for liquids bottom land distance.Methanol solution enters liquid flow field 7 by port one, discharges battery systems by port 8, and the carbon dioxide of generation is compressed into gas flowfield 2 by liquid and only collected the hollow channel 9 that intersects with gas flow 2, discharges battery by port one 0.This execution mode can reduce by 1 gas vent and not reduce the liquid flow field area, is applicable to single pond.
Claims (4)
1. portable direct methanol fuel cell anode flow field board, it is characterized in that the flow-field plate material is a graphite, comprise runner (7) and runner (2), described runner (7) is that single snake runner constitutes the methanol solution liquid flow field, runner (2) is that independently parallel fluid channels is formed in the flow of carbon dioxide gas field that three dimensions is not connected with liquid flow field, flow channel for liquids (7) is alternate with gas flow (2), and with ridge (3) is that the boundary separates mutually, methanol solution enters flow channel for liquids (7) by port (1), in the process by port (8) discharge, the carbon dioxide that reaction produces is discharged from exhaust outlet by gas flow (2).
2. a kind of portable direct methanol fuel cell anode flow field board according to claim 1 is characterized in that described exhaust outlet comprises port (5) and port (6).
3. a kind of portable direct methanol fuel cell anode flow field board according to claim 1, it is characterized in that described runner (2) is communicated with by the hollow channel (9) of hollow out on plate body, described hollow channel (9) is embedded in the anode flow field graphite cake non-intersect with flow channel for liquids (7), and gas collects through hollow channel (9) by runner (2) and discharged by port (10).
4. a kind of portable direct methanol fuel cell anode flow field board according to claim 1 is characterized in that the wide 0.5mm～1.5mm of described runner (7), dark 0.2mm～1.5mm; Wide 0.25mm～the 1.5mm of runner (2), dark 0.2mm～3mm; Wide 0.2mm～the 1.5mm of ridge (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202180913U CN201812887U (en) | 2010-05-28 | 2010-05-28 | Portable anode flow field board for direct methanol fuel cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202180913U CN201812887U (en) | 2010-05-28 | 2010-05-28 | Portable anode flow field board for direct methanol fuel cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201812887U true CN201812887U (en) | 2011-04-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010202180913U Expired - Fee Related CN201812887U (en) | 2010-05-28 | 2010-05-28 | Portable anode flow field board for direct methanol fuel cell |
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| CN (1) | CN201812887U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105244517A (en) * | 2015-10-12 | 2016-01-13 | 浙江工业大学 | Active drainage flow field for bipolar plate of proton exchange membrane fuel cell |
| CN107893238A (en) * | 2017-10-27 | 2018-04-10 | 中石化宁波工程有限公司 | A kind of hydrogen manufacturing electrolyzer of oxidation solution containing carbon pastes |
| CN107968211A (en) * | 2017-11-17 | 2018-04-27 | 武汉理工大学 | A kind of flow field plate structure for Proton Exchange Membrane Fuel Cells |
| CN108767287A (en) * | 2018-05-04 | 2018-11-06 | 华南理工大学 | For controlling and utilizing direct methanol fuel cell positive C O2Composite flow field plates |
| CN109921080A (en) * | 2017-12-12 | 2019-06-21 | 中国科学院大连化学物理研究所 | A kind of flow field structure of fuel cell or redox flow batteries pole plate |
| CN109935850A (en) * | 2017-12-18 | 2019-06-25 | 洁星环保科技投资（上海）有限公司 | For the bipolar plates and composite material of fuel cell pile, process of preparing |
-
2010
- 2010-05-28 CN CN2010202180913U patent/CN201812887U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105244517A (en) * | 2015-10-12 | 2016-01-13 | 浙江工业大学 | Active drainage flow field for bipolar plate of proton exchange membrane fuel cell |
| CN105244517B (en) * | 2015-10-12 | 2018-01-02 | 浙江工业大学 | A kind of flow field of Active Drainage dual polar plates of proton exchange membrane fuel cell |
| CN107893238A (en) * | 2017-10-27 | 2018-04-10 | 中石化宁波工程有限公司 | A kind of hydrogen manufacturing electrolyzer of oxidation solution containing carbon pastes |
| CN107968211A (en) * | 2017-11-17 | 2018-04-27 | 武汉理工大学 | A kind of flow field plate structure for Proton Exchange Membrane Fuel Cells |
| CN107968211B (en) * | 2017-11-17 | 2020-12-01 | 武汉理工大学 | Flow field plate structure for proton exchange membrane fuel cell |
| CN109921080A (en) * | 2017-12-12 | 2019-06-21 | 中国科学院大连化学物理研究所 | A kind of flow field structure of fuel cell or redox flow batteries pole plate |
| CN109935850A (en) * | 2017-12-18 | 2019-06-25 | 洁星环保科技投资（上海）有限公司 | For the bipolar plates and composite material of fuel cell pile, process of preparing |
| CN108767287A (en) * | 2018-05-04 | 2018-11-06 | 华南理工大学 | For controlling and utilizing direct methanol fuel cell positive C O2Composite flow field plates |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110427 Termination date: 20120528 |