CN105098206B - A kind of miniature methanol fuel cell fuel storage and feedway - Google Patents
A kind of miniature methanol fuel cell fuel storage and feedway Download PDFInfo
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- CN105098206B CN105098206B CN201410210601.5A CN201410210601A CN105098206B CN 105098206 B CN105098206 B CN 105098206B CN 201410210601 A CN201410210601 A CN 201410210601A CN 105098206 B CN105098206 B CN 105098206B
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- methanol
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- insulation layer
- feedway
- fuel cell
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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 invention provides a kind of fuel supply system suitable for passive miniature methanol fuel cell, it includes a pure methanol solution chamber, one compound insulation layer and a low concentration methanol solution cavity for controlling methanol diffusion velocity, wherein compound insulation layer is by Nafion membrane, it is placed in the graphene aerogel and stainless steel felt composition of Nafion membrane both sides, change the diffusion velocity of methanol by controlling the structure of compound insulation layer, the device has good airproof performance, working stability, reliability is high, it is reproducible, advantages of simple structure and simple, and the system energy densities of DMFC can be effectively improved.
Description
Technical field
The invention belongs to Proton Exchange Membrane Fuel Cells field, and in particular to one kind suitable for passive miniature methanol fire
Fuel-cell fuel is stored and feedway, and the device controls methanol by building compound insulation layer from pure methanol or highly concentrated
The diffusion velocity of degree methanol chamber to low concentration methanol chamber realizes the sustained release supply of fuel.
Background technology
DMFC（DMFC）Using liquid methanol as fuel, with simple in construction, energy density it is high, can be low
The features such as startup temperature；With reference to micro fabrication, it can fundamentally reduce the volume of each critical components of DMFC and then effectively improve
Its specific energy, therefore micro direct methanol fuel battery（µDMFC）There is good application in microminiature portable product field
Prospect.By the difference of fuel supply mode, DMFC points of μ is active and passive type；It is active to utilize the active auxiliary of such as pump, valve
Device accurately controls fuel to supply；Passive type does not need additionaling power source, and fuel cavity is directly connected with battery, mass transport process according to
By the effect of capillary force, gravity and concentration gradient, therefore passive type μ DMFC structures are compacter, need not consume electric energy maintenance work
Make, therefore be more suitable for the portable and microminiature equipment application of low power requirements.
In actual use, limited by Methanol permeation problems, passive type μ DMFC typically use the first of 3-5M low concentration
Alcohol solution reduces the specific energy of system as fuel.Because methanol permeability is the methanol concentration in anode catalyst layer
Determine, by setting methanol mass transfer barrier layer between fuel cavity and membrane electrode, increase methanol diffusional resistance, can realize
High concentration methanol reduces methanol crossover while driving to passive type μ DMFC.Compared to liquid methanol, steam methane has relatively
Low methanol crossover, therefore Nafion membrane, PDMS films or infiltrating and vaporizing membrane can be added between fuel cavity and membrane electrode, make
Obtain after liquid methanol is vaporized at normal temperatures and diffuse into anode catalyst layer again, although the passive type μ DMFC of this Steaming structure
Extra power supply or external equipment can not be needed to evaporate liquid methanol, but evaporation rate is difficult adjustment, still needs to coordinate
Mass transfer barrier layer is used, and realizes the preferable transfer rate of methanol steam.
The content of the invention
In order to overcome disadvantages mentioned above, the invention provides a kind of miniature methanol fuel cell fuel storage and feedway,
The device is effectively controlled diffusion velocity of the methanol from high concentration region to low concentration region, to be suitable for the straight of differential responses state
Methanol fuel cell is connect, simple in construction, working stability, reliability are high.
The object of the present invention is achieved like this：The device includes pure methanol chamber 1, a low concentration methanol chamber 3, with
And in being used to controlling the compound insulation layer 2 of methanol diffusion velocity therebetween, the compound insulation layer 2 by Nafion membrane c, put
Graphene aerogel layer b and the stainless steel carpet veneer a structures being placed on the outside of each graphene aerogel layer b in Nafion membrane c both sides
Into the pure top of methanol chamber 1 is provided with an injection orifice 5, and for injecting pure methanol, the top of low concentration methanol chamber 3 is provided with one
Venthole 6, in order to the CO of release reaction generation2, pure methanol chamber 1 connected with low concentration methanol chamber 3 by compound insulation layer 2
Connect, the effect of compound insulation layer 2 is to allow pure methanol to be slowly transferred to by concentration difference diffusion in low concentration methanol chamber 3 to supplement
The methanol that cell reaction is consumed；Simultaneously as graphene aerogel layer b hydrophobic character, water in low concentration methanol chamber 3 without
Method is reached in the pure methanol chamber 1 of high concentration by compound insulation layer 2；By the area, the graphene aerogel layer that control Nafion membrane c
B micro-structural can change the diffusion velocity of methanol.
The micro-structural of the graphene aerogel layer b refers to graphene aerogel layer b thickness, porosity and the size in hole
Size.
Advantages of the present invention and effect are：
Micro-structural of the invention by controlling graphene aerogel layer（Thickness, porosity, the size in hole）To change by pure
Methanol chamber, to be suitable for the DMFC of differential responses state, is tied to the diffusion velocity of low concentration methanol solution cavity
Structure is simple, working stability, reliability are high.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention；
Wherein：1st, pure methanol chamber；2nd, compound insulation layer, wherein a are stainless steel carpet veneer, and b is graphene aerogel layer, and c is
Nafion membrane；3rd, low concentration methanol chamber；4th, DMFC；5th, injection orifice；6th, venthole.
Specific embodiment
As shown in accompanying drawing 1：The device includes pure methanol chamber 1, a low concentration methanol solution cavity 3, and in two
Be used to controlling the compound insulation layer 2 of methanol diffusion velocity between person, the compound insulation layer 2 by Nafion membrane c, be placed in Nafion
The graphene aerogel layer b of film both sides and the stainless steel carpet veneer a (stainless steels being placed on the outside of each graphene aerogel layer b
The thickness of carpet veneer is less than 0.5 millimeter.) composition, the pure top of methanol chamber 1 is provided with an injection orifice 5, low dense for injecting pure methanol
The top of degree methanol chamber 3 is also provided with a venthole 6, in order to the CO of release reaction generation2, pure methanol chamber 1 and low concentration
Methanol solution chamber 3 is connected by compound insulation layer 2, and the effect of compound insulation layer 2 is to allow pure methanol to be spread slowly by concentration difference
Be transferred in low concentration methanol chamber 3 to supplement the methanol that cell reaction is consumed；Simultaneously as graphene aerogel layer b
Water in hydrophobic character, low concentration chamber can not be reached in pure methanol chamber 1 by compound insulation layer 2.
Claims (4)
1. a kind of miniature methanol fuel cell fuel storage and feedway, the device include a pure methanol chamber（1）, it is one low
Concentration methanol chamber（3）, and in the compound insulation layer for being used to control methanol diffusion velocity therebetween（2）, it is characterised in that：
The compound insulation layer（2）By Nafion membrane c, it is placed in the graphene aerogel layer b of Nafion membrane c both sides and is placed in each graphite
Stainless steel carpet veneer a on the outside of alkene aerogel layer b is constituted, by control Nafion membrane c area, graphene aerogel layer b it is micro-
Structure can change the diffusion velocity of methanol.
2. a kind of miniature methanol fuel cell fuel storage according to claim 1 and feedway, it is characterised in that：Institute
State pure methanol chamber（1）Top be provided with an injection orifice（5）, low concentration methanol chamber（3）Top be provided with a venthole（6）,
Pure methanol chamber（1）With low concentration methanol chamber（3）Pass through compound insulation layer（2）Connection.
3. a kind of miniature methanol fuel cell fuel storage according to claim 1 and feedway, it is characterised in that：Institute
The micro-structural for stating graphene aerogel layer b refers to graphene aerogel layer b thickness, porosity and the size in hole.
4. a kind of miniature methanol fuel cell fuel storage according to claim 1 and feedway, it is characterised in that：Institute
The thickness for stating stainless steel carpet veneer a is less than 0.5 millimeter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410210601.5A CN105098206B (en) | 2014-05-19 | 2014-05-19 | A kind of miniature methanol fuel cell fuel storage and feedway |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410210601.5A CN105098206B (en) | 2014-05-19 | 2014-05-19 | A kind of miniature methanol fuel cell fuel storage and feedway |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105098206A CN105098206A (en) | 2015-11-25 |
| CN105098206B true CN105098206B (en) | 2017-09-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410210601.5A Expired - Fee Related CN105098206B (en) | 2014-05-19 | 2014-05-19 | A kind of miniature methanol fuel cell fuel storage and feedway |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105449248B (en) * | 2015-12-23 | 2018-06-19 | 广东合即得能源科技有限公司 | The more babinet methanol water storage systems and application method of a kind of fuel cell car |
| CN108615919B (en) * | 2018-05-30 | 2021-05-07 | 中国电子科技集团公司电子科学研究院 | Passive direct methanol fuel cell system and optimization method |
| CN109860674B (en) * | 2019-01-21 | 2020-08-25 | 西安交通大学 | Direct methanol fuel cell driven by elastic potential energy and working method thereof |
| CN220856629U (en) * | 2020-04-21 | 2024-04-26 | 罗伯特·博世有限公司 | Proton exchange membrane for fuel cell |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101364646A (en) * | 2007-08-08 | 2009-02-11 | 上海攀业氢能源科技有限公司 | Fuel cell electrode having aqueous vapor separation layer |
| CN101645514A (en) * | 2009-07-02 | 2010-02-10 | 中国科学院长春应用化学研究所 | Passive direct methanol fuel cell by employing pure methanol feeding mode |
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2014
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101364646A (en) * | 2007-08-08 | 2009-02-11 | 上海攀业氢能源科技有限公司 | Fuel cell electrode having aqueous vapor separation layer |
| CN101645514A (en) * | 2009-07-02 | 2010-02-10 | 中国科学院长春应用化学研究所 | Passive direct methanol fuel cell by employing pure methanol feeding mode |
Non-Patent Citations (1)
| Title |
|---|
| 使用高浓度甲醇的微型直接甲醇燃料电池;王路文 等;《光学精密工程》;20110915;第19卷(第9期);第2079-2084页 * |
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| CN105098206A (en) | 2015-11-25 |
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| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Duan Xiaoyue Inventor after: Xu Shuai Inventor after: Chang Limin Inventor after: Liu Wei Inventor after: Zhao Cuimei Inventor after: Li Yunjiao Inventor after: Yang Yang Inventor before: Chang Limin Inventor before: Xu Hong Inventor before: Duan Xiaoyue Inventor before: Liu Wei |
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| 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: 20170908 |