CN204088433U - A kind of high strength diaphragm for molten carbonate fuel battery - Google Patents
A kind of high strength diaphragm for molten carbonate fuel battery Download PDFInfo
- Publication number
- CN204088433U CN204088433U CN201420356112.6U CN201420356112U CN204088433U CN 204088433 U CN204088433 U CN 204088433U CN 201420356112 U CN201420356112 U CN 201420356112U CN 204088433 U CN204088433 U CN 204088433U
- Authority
- CN
- China
- Prior art keywords
- barrier film
- diaphragm
- molten carbonate
- carbonate fuel
- high strength
- 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 - Lifetime
Links
- 239000000446 fuel Substances 0.000 title claims abstract description 27
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 title claims abstract description 20
- 230000004888 barrier function Effects 0.000 claims abstract description 60
- 239000007769 metal material Substances 0.000 claims abstract description 15
- 239000002131 composite material Substances 0.000 claims abstract description 12
- 238000010276 construction Methods 0.000 claims abstract description 12
- 239000002002 slurry Substances 0.000 claims abstract description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 7
- 229910052751 metal Inorganic materials 0.000 claims description 7
- 239000011148 porous material Substances 0.000 claims description 7
- 239000006260 foam Substances 0.000 claims description 4
- 229910052759 nickel Inorganic materials 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 9
- 229910010093 LiAlO Inorganic materials 0.000 description 4
- 239000003792 electrolyte Substances 0.000 description 4
- 238000002360 preparation method Methods 0.000 description 4
- URAYPUMNDPQOKB-UHFFFAOYSA-N glycerine triacetate Natural products CC(=O)OCC(OC(C)=O)COC(C)=O URAYPUMNDPQOKB-UHFFFAOYSA-N 0.000 description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 210000000988 bone and bone Anatomy 0.000 description 2
- 229910002091 carbon monoxide Inorganic materials 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000003487 electrochemical reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 230000035882 stress Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000000498 ball milling Methods 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000013530 defoamer Substances 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 235000011187 glycerol Nutrition 0.000 description 1
- 239000001087 glyceryl triacetate Substances 0.000 description 1
- 235000013773 glyceryl triacetate Nutrition 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000004310 lactic acid Substances 0.000 description 1
- 235000014655 lactic acid Nutrition 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 150000002739 metals Chemical group 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
- 230000005619 thermoelectricity Effects 0.000 description 1
- 229960002622 triacetin Drugs 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- 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
- Y02E60/10—Energy storage using batteries
Landscapes
- Fuel Cell (AREA)
Abstract
A kind of high strength diaphragm for molten carbonate fuel battery, this battery diaphragm comprises porous metal material, and barrier film and one deck lower diaphragm plate on the one deck being separately positioned on porous metal material upper and lower, form barrier film-metal-barrier film integral type composite construction; When also comprising use, at the surperficial barrier film that the upper and lower of the barrier film-metal-barrier film integral type composite construction being cut into required form is arranged, described upper barrier film, lower diaphragm plate and surperficial barrier film all adopt traditional barrier film slurry to be prepared from; This battery diaphragm has very high mechanical strength, efficiently solve barrier film easy splintering problem in an assembling process, reduce the assembling difficulty of molten carbonate fuel cell, additionally improves the porosity of barrier film, add electrolytical recoverable amount, and then add battery life.
Description
Technical field
The utility model relates to molten carbonate fuel cell technical field, is specifically related to a kind of high strength diaphragm for molten carbonate fuel battery.
Background technology
Fuel cell is a kind of Blast Furnace Top Gas Recovery Turbine Unit (TRT) in electrochemical reaction mode, the chemical energy of fuel directly being become electric energy without burning, its maximum feature is that course of reaction does not relate to burning, therefore energy conversion efficiency is not by the restriction of " Carnot cycle ", and efficiency is up to 50% ~ 60%.During operation of fuel cells, hydrogen or other fuel are input to anode, and on electrode and electrolytical interface, the electrochemical reaction of hydrogen or other oxidized and oxygen reduction occur, generation current, export electric energy.Compared with thermal power generation mode, the power generation process of fuel cell without the direct burning of fuel, CO, CO
2, SO
2, NO
xand unburnt discharge of poisonous waste amount is extremely low, be the after thermoelectricity, water power and nuclear power the 4th kind of generally acknowledged generation mode.Therefore, fuel cell is that the new technologies such as energy collecting source, chemical industry, material and Automated condtrol are integrated, have new power that is efficient and clean characteristic.
But the electrolyte membrance of molten carbonate fuel cell will ensure effective gas barrier properties in cell operation, must have certain mechanical strength.In the start-up and operation process of molten carbonate fuel cell, barrier film can be subject to the mechanical stress thermal stress that cause different from from molten salt electrolyte thermal coefficient of expansion barrier film that all parts thermal expansion causes.In order to prevent barrier film from occurring underbead crack in startup optimization process, researchers add Al in barrier film
2o
3bulky grain, Al
2o
3fiber, bar-shaped γ-LiAlO
2and low melting point Al metal dust etc. strengthens the intergranular adhesion of barrier film, thus strengthen the resistance to stress ability of barrier film.But, Al
2o
3oarse-grainedly to add, can not say that barrier film is enhanced to the intensity of needs, Al
2o
3fiber again can not be stable for a long time in molten salt electrolyte environment existence, and price is also higher, bar-shaped γ-LiAlO
2preparation method complicated, production cost is high.
Summary of the invention
For solving above-mentioned problems of the prior art, the purpose of this utility model is to provide a kind of high strength diaphragm for molten carbonate fuel battery, this battery diaphragm has very high mechanical strength, efficiently solve barrier film easy splintering problem in an assembling process, reduce the assembling difficulty of molten carbonate fuel cell, additionally improves the porosity of barrier film, add electrolytical recoverable amount, and then add battery life.
In order to achieve the above object, the technical scheme that the utility model adopts is:
A kind of high strength diaphragm for molten carbonate fuel battery, comprises porous metal material 2, and barrier film 1 and one deck lower diaphragm plate 3 on the one deck being separately positioned on porous metal material 2 upper and lower, form barrier film-metal-barrier film integral type composite construction; When also comprising use, at the surperficial barrier film 4 that the upper and lower of the barrier film-metal-barrier film integral type composite construction being cut into required form is arranged, described upper barrier film 1, lower diaphragm plate 3 and surperficial barrier film 4 all adopt traditional barrier film slurry to be prepared from.
The porosity of described porous metal material 2 is 70 ~ 80%, and pore diameter range is 10 ~ 150 μm, and thickness is 0.05 ~ 0.2mm.
Described porous metal material 2 is adopt nickel foam as metallic framework, the sheet metal that hydraulic press is developed under 100t pressure.
The pore diameter range of described surperficial barrier film 4 is 0.1 ~ 1 μm.
The overall porosity of described battery diaphragm is 40 ~ 70%.
The utility model battery diaphragm has porous metal material supporting layer, porous metals skeleton is embedded in the centre of barrier film, can play and increase barrier film anti-pressure ability, can also store more electrolyte in cell operation, supporting layer both sides are all coated with LiAlO simultaneously
2diaphragm material; Therefore there is very high mechanical strength, efficiently solve barrier film easy splintering problem in an assembling process, reduce the assembling difficulty of molten carbonate fuel cell, additionally improves the porosity of barrier film, add electrolytical recoverable amount, and then add battery life.
Accompanying drawing explanation
Fig. 1 is the utility model barrier film-metal-barrier film integral type composite construction schematic diagram.
When Fig. 2 is the utility model use, barrier film-metal-barrier film integral type composite construction is prepared into the schematic diagram of battery diaphragm.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
As depicted in figs. 1 and 2, a kind of high strength diaphragm for molten carbonate fuel battery of the utility model, comprise porous metal material 2, barrier film 1 and one deck lower diaphragm plate 3 on the one deck being separately positioned on porous metal material 2 upper and lower, form barrier film-metal-barrier film integral type composite construction; When also comprising use, at the surperficial barrier film 4 that the upper and lower of the barrier film-metal-barrier film integral type composite construction being cut into required form is arranged, described upper barrier film 1, lower diaphragm plate 3 and surperficial barrier film 4 all adopt traditional barrier film slurry to be prepared from.
As preferred implementation of the present utility model, the porosity of described porous metal material 2 is 70 ~ 80%, and pore diameter range is 10 ~ 150 μm, and thickness is 0.05 ~ 0.2mm.Further, described porous metal material 2 is adopt nickel foam as metallic framework, the sheet metal that hydraulic press is developed under 100t pressure.
As preferred implementation of the present utility model, the pore diameter range of described surperficial barrier film 4 is 0.1 ~ 1 μm.
As preferred implementation of the present utility model, the overall porosity of described battery diaphragm is 40 ~ 70%.
The preparation method of a kind of high strength diaphragm for molten carbonate fuel battery described above, comprises the steps:
Step 1: with particle size range α-LiAlO between 0.1 ~ 10 μm
2particle is as barrier film powder, adopt distilled water as solvent, lactic acid is as dispersant, polyvinyl alcohol is as binding agent, glycerine and glyceryl triacetate are as plasticizer, and polyethers is as defoamer, and mixing and ball milling forms homogeneous barrier film slurry in 24 hours, then adopt band casting to prepare film forming, use as upper barrier film 1; During preparation, the content of above-mentioned each component carries out proportioning by publication CN97111018.2.
Step 2: adopt the nickel foam of porosity 80% as metallic framework, hydraulic press is developed into 0.1 μm of sheet metal under 100t pressure, is then spread on above-mentioned barrier film 1, until upper barrier film 1 bone dry, be prepared into metal-barrier film integral structure;
Step 3: again adopt method described in step 1 to prepare film forming, use as lower diaphragm plate 3, adopt the ventricumbent mode of metal to be positioned on lower diaphragm plate 3 metal prepared by step 2-barrier film integral structure, until lower diaphragm plate 3 bone dry, form barrier film-metal-barrier film integral type composite construction;
Step 4: during use, is cut into required form by above-mentioned barrier film-metal-barrier film integral type composite construction, and hot pressing one deck surperficial barrier film 4 of adopting method described in step 1 to prepare film forming to be formed respectively at an upper portion thereof and at a lower portion thereof, form battery diaphragm.
Through Mercury-injection test, the overall porosity of battery diaphragm is 68%, when average pore size is 0.4 μm, reaches battery to the requirement of barrier film various performance parameters.
The battery diaphragm of above-mentioned preparation is positioned between cell end plate and carries out pre-assembled experiment, keep 5 minutes after stacking pressure being increased to 20t, then barrier film is checked, barrier film stands intact, do not occur breaking, illustrate that battery diaphragm prepared by the utility model method has very high mechanical strength, meet the requirement of molten carbonate fuel cell under large stacking pressure completely.
Claims (4)
1. a high strength diaphragm for molten carbonate fuel battery, it is characterized in that: comprise porous metal material (2), barrier film (1) and one deck lower diaphragm plate (3) on the one deck being separately positioned on porous metal material (2) upper and lower, form barrier film-metal-barrier film integral type composite construction; When also comprising use, at the surperficial barrier film (4) that the upper and lower of the barrier film-metal-barrier film integral type composite construction being cut into required form is arranged, described upper barrier film (1), lower diaphragm plate (3) and surperficial barrier film (4) all adopt barrier film slurry to be prepared from.
2. a kind of high strength diaphragm for molten carbonate fuel battery according to claim 1, is characterized in that: the porosity of described porous metal material (2) is 70 ~ 80%, and pore diameter range is 10 ~ 150 μm, and thickness is 0.05 ~ 0.2mm.
3. a kind of high strength diaphragm for molten carbonate fuel battery according to claim 2, is characterized in that: described porous metal material (2) is adopt nickel foam as metallic framework, the sheet metal that hydraulic press is developed under 100t pressure.
4. a kind of high strength diaphragm for molten carbonate fuel battery according to claim 1, is characterized in that: the pore diameter range of described surperficial barrier film (4) is 0.1 ~ 1 μm.
5. a kind of high strength diaphragm for molten carbonate fuel battery according to claim 1, is characterized in that: the overall porosity of described battery diaphragm is 40 ~ 70%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420356112.6U CN204088433U (en) | 2014-06-30 | 2014-06-30 | A kind of high strength diaphragm for molten carbonate fuel battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420356112.6U CN204088433U (en) | 2014-06-30 | 2014-06-30 | A kind of high strength diaphragm for molten carbonate fuel battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204088433U true CN204088433U (en) | 2015-01-07 |
Family
ID=52181109
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420356112.6U Expired - Lifetime CN204088433U (en) | 2014-06-30 | 2014-06-30 | A kind of high strength diaphragm for molten carbonate fuel battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204088433U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104078634A (en) * | 2014-06-30 | 2014-10-01 | 中国华能集团清洁能源技术研究院有限公司 | High-strength molten carbonate fuel cell diaphragm and preparation method thereof |
| CN104638218A (en) * | 2015-02-04 | 2015-05-20 | 中国华能集团清洁能源技术研究院有限公司 | Method for preparing environment-friendly molten carbonate fuel cell diaphragm |
| CN105655596A (en) * | 2016-01-13 | 2016-06-08 | 山东联星能源集团有限公司 | Military fuel cell with high durability |
-
2014
- 2014-06-30 CN CN201420356112.6U patent/CN204088433U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104078634A (en) * | 2014-06-30 | 2014-10-01 | 中国华能集团清洁能源技术研究院有限公司 | High-strength molten carbonate fuel cell diaphragm and preparation method thereof |
| CN104638218A (en) * | 2015-02-04 | 2015-05-20 | 中国华能集团清洁能源技术研究院有限公司 | Method for preparing environment-friendly molten carbonate fuel cell diaphragm |
| CN105655596A (en) * | 2016-01-13 | 2016-06-08 | 山东联星能源集团有限公司 | Military fuel cell with high durability |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |