CN102299360B - Methane direct internal reforming molten carbonate fuel cell (DIR-MCFC) structure and battery pack - Google Patents
Methane direct internal reforming molten carbonate fuel cell (DIR-MCFC) structure and battery pack Download PDFInfo
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- CN102299360B CN102299360B CN201010207016.1A CN201010207016A CN102299360B CN 102299360 B CN102299360 B CN 102299360B CN 201010207016 A CN201010207016 A CN 201010207016A CN 102299360 B CN102299360 B CN 102299360B
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 30
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 title claims abstract description 28
- 238000002407 reforming Methods 0.000 title claims abstract description 26
- 239000000446 fuel Substances 0.000 title claims abstract description 21
- 239000003513 alkali Substances 0.000 claims abstract description 39
- 239000003054 catalyst Substances 0.000 claims abstract description 39
- 239000003792 electrolyte Substances 0.000 claims abstract description 13
- 239000011258 core-shell material Substances 0.000 claims abstract description 7
- 239000012528 membrane Substances 0.000 claims abstract description 5
- 229910021536 Zeolite Inorganic materials 0.000 claims description 19
- 239000010457 zeolite Substances 0.000 claims description 19
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 13
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims description 11
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 10
- 238000005260 corrosion Methods 0.000 claims description 9
- 230000007797 corrosion Effects 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 8
- 229910052759 nickel Inorganic materials 0.000 claims description 7
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 6
- 239000007787 solid Substances 0.000 claims description 6
- 229910052751 metal Inorganic materials 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 5
- 238000007747 plating Methods 0.000 claims description 5
- 230000000903 blocking effect Effects 0.000 claims description 4
- 230000005611 electricity Effects 0.000 claims description 4
- 239000002245 particle Substances 0.000 claims description 4
- 239000000843 powder Substances 0.000 claims description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- 239000010935 stainless steel Substances 0.000 claims description 4
- 239000000126 substance Substances 0.000 claims description 4
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical group [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 238000009529 body temperature measurement Methods 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 2
- 229910000831 Steel Inorganic materials 0.000 claims description 2
- 239000000376 reactant Substances 0.000 claims description 2
- 239000010959 steel Substances 0.000 claims description 2
- 239000007789 gas Substances 0.000 abstract description 13
- 230000002779 inactivation Effects 0.000 abstract description 7
- 239000007788 liquid Substances 0.000 abstract description 7
- 208000005223 Alkalosis Diseases 0.000 abstract description 3
- 230000002340 alkalosis Effects 0.000 abstract description 3
- 230000036228 toxication Effects 0.000 abstract 2
- 239000004020 conductor Substances 0.000 abstract 1
- 239000012495 reaction gas Substances 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 8
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 7
- 230000008878 coupling Effects 0.000 description 7
- 238000010168 coupling process Methods 0.000 description 7
- 238000005859 coupling reaction Methods 0.000 description 7
- 238000006057 reforming reaction Methods 0.000 description 7
- 239000013078 crystal Substances 0.000 description 6
- LPSKDVINWQNWFE-UHFFFAOYSA-M tetrapropylazanium;hydroxide Chemical compound [OH-].CCC[N+](CCC)(CCC)CCC LPSKDVINWQNWFE-UHFFFAOYSA-M 0.000 description 6
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 5
- 230000004888 barrier function Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 231100000572 poisoning Toxicity 0.000 description 5
- 230000000607 poisoning effect Effects 0.000 description 5
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 description 4
- 230000009977 dual effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000001257 hydrogen Substances 0.000 description 4
- 229910052739 hydrogen Inorganic materials 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000003487 electrochemical reaction Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000009514 concussion Effects 0.000 description 2
- 239000008367 deionised water Substances 0.000 description 2
- 229910021641 deionized water Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005518 electrochemistry Effects 0.000 description 2
- 238000009415 formwork Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000002243 precursor Substances 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- WWBITQUCWSFVNB-UHFFFAOYSA-N 3-silylpropan-1-amine Chemical compound NCCC[SiH3] WWBITQUCWSFVNB-UHFFFAOYSA-N 0.000 description 1
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 235000012489 doughnuts Nutrition 0.000 description 1
- 238000003411 electrode reaction Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- XGZVUEUWXADBQD-UHFFFAOYSA-L lithium carbonate Chemical compound [Li+].[Li+].[O-]C([O-])=O XGZVUEUWXADBQD-UHFFFAOYSA-L 0.000 description 1
- 229910052808 lithium carbonate Inorganic materials 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 229940072033 potash Drugs 0.000 description 1
- 235000015320 potassium carbonate Nutrition 0.000 description 1
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Substances [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 238000005406 washing Methods 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
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
Landscapes
- Fuel Cell (AREA)
Abstract
The invention discloses a methane direct internal reforming molten carbonate fuel cell (DIR-MCFC) structure and a battery pack, belonging to the technical field of energy. The structure and the battery pack are mainly characterized by having double alkali resistance functions, and can effectively solve the key problems that the molten carbonate electrolyte is at high temperature and volatilizable and can result in toxication and inactivation of a reforming catalyst easily; the structure comprises a polar plate (bipolar plate), an alkali resistance plate, a collector plate, a cathode/anode and an electrolyte membrane; the polar plate (bipolar plate) is not only used as a flow channel for reaction gas but also used as a current conductor of the whole battery; a core-shell type catalyst is built in the flow channel (air chamber) of an anode plate; the flow channel (air chamber) of the anode plate is connected with the electrolyte membrane through the alkali resistance plate, the anode collector plate and the anode; the alkali resistance plate allows gas to pass through but does not allow liquid alkali to pass through; and an alkali resistance functional protection layer is wrapped on the surface of the core-shell type catalyst so that alkalosis can be effectively prevented. The structure disclosed by the invention can be applied to methane direct internal reforming. The key problems of toxication and inactivation of the reforming catalyst can be effectively solved. The service life of the catalyst is greatly increased.
Description
Technical field
The present invention relates to energy technology field fuel cell technology, be specifically related to the directly interior reformation molten carbonate fuel cell structure of a kind of methane
Technical background
Molten carbonate fuel cell (MCFC) is a kind of high-temperature fuel cell, and working temperature is 650 ℃, and electrolyte is generally the mixture (62mol%Li of lithium carbonate and potash
2cO
3: 38mol%K
2cO
3), be suitablely used as distributed power station, entered at present commercialization early stage.MCFC has the general character advantages such as fuel cell is clean, efficient, low noise, specific power height, can also, by built-in hydrogen that is converted into of cheap fuel such as natural gas, liquid fuel, biogas, form directly interior reformation molten carbonate fuel cell (DIR-MCFC).
DIR-MCFC is technology as a whole, mainly has the following advantages:
(1) owing to not needing external reformer, reduced system cost;
(2) realize the Energy Coupling of electrochemistry, reforming reaction: electrochemical reaction heat release, reforming reaction strong endothermic, the two can realize complementation, and cell row heat load reduces;
(3) realize the material coupling of electrochemistry, reforming reaction: the CO that anodic oxidation water generation reaction steam, reforming reaction produce
2can be recycled; Electrode reaction anode consumption hydrogen can be broken reforming reaction thermodynamical equilibrium, improves methane conversion and cell power generation efficiency;
(4) in DIR-MCFC anode, hydrogen is more evenly distributed, and in battery, Temperature Distribution is also more even.
DIR-MCFC technology is reacted two of electrochemical reaction and reforming reactions to be coupling in same anode gas chamber and is carried out, and exists the volatile loss of fused carbonate electrolyte high temperature, and causes the key issue of the poisoning and inactivation of reforming catalyst.So solving this key problem is vital to develop DIR-MCFC technology, there is important scientific meaning and real economy and be worth.
The USP5725964 of MTU application is placed in gas flow by reforming catalyst, by structurally adjusting, catalyst is protected.The USP6071634 patent of Britain BG PLC application mainly adjusts on battery structure, and anode passages is divided into four sections, and at the built-in reforming catalyst of first paragraph, but do not touch upon too many carbonate contamination problem.
United States Patent (USP) 4702973 and European patent 0257398A2 adopt two chambers anode construction; between fuel chambers and anode chamber, settle the compact metal paper tinsel (Cu, Ni) of a layer thickness between 0.25-2.5mm; catalyst is filled in fuel chambers; the hydrogen molecule that reforming reaction produces dissociates and penetrates into anode chamber's participation electrochemical reaction in metal forming; alkaline electrolyte, hydrogen molecule etc. can not see through metal forming, thus protection reforming catalyst.Because hydrogen molecule penetrates into anolyte reaction chamber by dissociating, caused very large resistance to mass tranfer, thereby battery performance is not good.
In Japan Patent 63029458, describe to select and scribble B
4c, H
fn or ZrO
2nickel plate alkali is intercepted; Japan Patent 1279574 use, as the method on nickel porous covering catalyst surface, make it not infiltrate carbonate, intercept carbonate.But do not solve the problem of electrolyte volatilization loss.
Summary of the invention
In order to overcome the problem existing in known technology, the object of the present invention is to provide a kind of molten carbonate fuel cell structure and the battery pack that can reform in directly for methane, and this structure can reduce electrolyte volatilization loss and catalyst alkalosis degree to a great extent, improve battery performance, extending battery life.
In order to achieve the above object, the technical solution used in the present invention is:
The directly interior reformation molten carbonate fuel cell structure of methane, comprises the plate, collector plate, anode, electrolyte membrance, negative electrode, collector plate, the cathode plate that stack successively, is provided with resistance alkali plate between pole plate and collector plate.
Described plate body material is steel plate, and it is high that surface is coated with conductance, the metal that corrosion resistance is strong, plate activates rear surface nickel plating by copper facing, cathode plate electroplate, surface is coated with one deck silver, conductance high corrosion resistance can reduce and melt salt corrosion by force, increases electricity simultaneously and leads; Pole plate is provided with anode chamber, gas annular channel and air inlet/outlet, and pole plate side is provided with thermocouple temperature measurement jack; Cathode plate is identical with its structure.Air inlet/outlet road airflow direction is vertical with plate face, and gas flow is donut cross runner.
In described plate runner, can place reforming catalyst, above runner, stack successively resistance alkali plate, collector plate and anode; And the anode flow channel degree of depth can regulate as required voluntarily.
Described reforming catalyst is for take the methane reforming catalyst that nickel is activated centre, and catalyst surface has been coated zeolite rete, has formed core-shell type reforming catalyst; Catalyst particle size is 100 microns-5 millimeters; Its preparation process can be with reference to patent (a kind of method and application 200910301864.6 thereof of protecting reforming catalyst of molten carbonate fuel cell, the applying date: 2009.4.27, applicant: Dalian University of Technology) carry out.
In cathode plate runner, solid carbonate powder be can place, collector plate and negative electrode above runner, stacked successively; The cathode flow channels degree of depth can regulate as required voluntarily; Solid carbonate is alkali carbonate, and its particle diameter is 10 microns-100 microns.
Described resistance alkali plate is soda blocking collector plate, is coated Si O
2the collector plate of zeolite rete, it allows reactant and product to pass through, and does not allow alkali to pass through, and it is coated with SiO by porous plate duct inner surface
2zeolite rete forms, SiO
2zeolite rete forms glaze structure, SiO
2zeolite membrane layer material is SiO
2; The surface of resistance alkali plate gas passage has glaze structure, with collector plate and gas flowfield connection for the silver metal layer through chemical plating, to stop high temperature corrosion and to improve electricity and lead.
Described collector plate is porous stainless steel material, and to be coated with conductance high on collector plate surface, the argent that corrosion resistance is strong.
When being assembled into battery pack, two end plates of battery pack are respectively plate and cathode plate, and centre stacks battery structure claimed in claim 1 as element cell, is provided with bipolar plates between element cell; Bipolar plates is to be integrated by plate fastening relative to the cathode plate back side, and the formation of its both sides is consistent with plate and cathode plate respectively.
The present invention can solve the volatile loss of fused carbonate electrolyte high temperature and the reforming catalyst that causes is poisoning and the key issue of inactivation, adopt dual resistance alkali scheme: resistance alkali plate has the hydrogen of permission to be passed through, do not allow alkali to pass through, have porous plate duct inner surface to be coated with ceramic membrane and form; Reforming catalyst surface has been coated zeolite rete, has formed core-shell type reforming catalyst, and zeolite rete has resistance alkali function.With respect to other patent, improve battery performance, increase battery life.
Accompanying drawing explanation
Fig. 1 is monocell combination schematic diagram of the present invention;
Fig. 2 is battery combination schematic diagram of the present invention;
Fig. 3 is the planar structure cutaway view of bipolar plates of the present invention;
Fig. 4 is cross-sectional view and the resistance alkali principle that the present invention hinders alkali plate.
Embodiment
The preparation of soda blocking collector plate, can referenced patent (a kind of method and application 200910301864.6 thereof of protecting reforming catalyst of molten carbonate fuel cell, the applying date: 2009.4.27, applicant: Dalian University of Technology) carry out;
Detailed process is as follows:
Collector plate preliminary treatment: by porous collector plate deionized water rinsing, ultrasonic concussion, 100 ℃ of dry for standby.
The preparation of Sil-1 zeolite seed crystal and with the covalent coupling of collector plate: according to TPAOH: SiO
2: H
2o=30: the mol ratio configuration zeolite seed crystal precursor liquid of 90: 2800, wherein tetraethoxysilane (TEOS) is silicon source, TPAOH (TPAOH) is organic formwork agent, after fully mixing, stirring at room is 24 hours, be injected in the stainless steel crystallizing kettle that contains polytetrafluoro liner, after sealing as in 100 ℃ of baking ovens, after 15 hours, take out, by the mixed liquor centrifugation obtaining, extremely neutral with deionized water cyclic washing, with ethanol displacement, obtain crystal grain at the Sil-1 of 150 ~ 200nm zeolite seed crystal afterwards, be made into mass fraction and be 0.08% alcohol suspension, standby after ultrasonic concussion evenly.
Then in the ethanol that is 40: 1 by collector plate as for volume ratio and γ-aminopropylsilane solution, 100 ℃ of self-heating couplings are 4 hours, then coupling collector plate is placed in to mass fraction and is 100 ℃ of self-heating couplings of Sil-1 zeolite seed crystal dispersion liquid of 0.08% 5 hours, take out, 550 ℃ of high-temperature roastings can obtain the collector plate of load Sil-1 crystal seed layer.
The formation of resistance alkali film: according to TPAOH: SiO
2: H
2o=30: the synthetic precursor liquid of mol ratio configuration film of 90: 45000, wherein tetraethoxysilane (TEOS) is silicon source, TPAOH (TPAOH) is organic formwork agent, after fully mixing, stirring at room is 24 hours, be injected in the stainless steel crystallizing kettle that contains polytetrafluoro liner, collector plate is placed in to crystallizing kettle, after sealing as in 170 ℃ of baking ovens, hydrothermal crystallizing 36 hours, product after crystallization is taken out, after 80 ℃ of oven dry, in 550 ℃ of calcinations 6 hours, heating rate 1K/min, removed the collector plate that template can obtain coated resistance alkali layer.
Then by mechanical grinding, remove the SiO on collector plate surface
2zeolite rete, only has and in duct, leaves SiO
2zeolite rete.Resistance alkali layer is exactly Sil-1 zeolite rete, and composition is SiO
2.
Below in conjunction with accompanying drawing, the present invention is described in further details
Referring to Fig. 1, each parts of individual fuel cell of the present invention stack order and are: plate 12, reforming catalyst 3, resistance alkali plate 4, anode current collector plate 5, anode 6, barrier film 7, negative electrode 8, cathode collector plate 9, solid carbonate powder 10, cathode plate 13.Anode end plate 12 has thermocouple temperature measurement duct 1 and anode air inlet/outlet 2, and cathode plate has analog structure.Catalyst 3 is core-shell type structure, coordinates resistance alkali plate 4 to realize dual resistance alkali effect.
Concrete operations are: catalyst 3 is seated in the gas flowfield of plate 12, then stack successively resistance alkali plate 4 thereon, anode current collector plate 5, and anode 6,, form half-cell anode.Solid carbonate powder 10 is seated in the gas flowfield of cathode plate 13, then stacks successively cathode collector plate 9 thereon, and negative electrode 8 is same with the sealing of self-control coating materials, forms half-cell negative electrode.During assembling monocell, barrier film is placed between half-cell anode and half-cell negative electrode, monocell has been assembled.
Its main feature is to have dual resistance alkali function, can effectively solve the volatile loss of fused carbonate electrolyte high temperature, and easily causes the key issue of the poisoning and inactivation of reforming catalyst.This method can be applied to methane and reform in directly, effectively solves the key issue of the poisoning and inactivation of reforming catalyst, has greatly improved catalyst useful life.
Referring to Fig. 2, the present invention can be used for the assembling of fuel cell unit, and concrete assembling mode is: with monocell composite class seemingly, difference is to adopt bipolar plates two-in-one component 14 to connect in battery pack.
The assembling mode of bipolar plates two-in-one component 14: bipolar plates two-in-one component 14 is plate 12 integrative-structure that snaps together relative to cathode plate 13 back sides, during assembling, to stack order identical with half-cell for each internal structure.Bipolar plates two-in-one component 14 one sides are assembled by half-cell anode assembling mode, another side is assembled by half-cell cathode assembling mode, then press plate 12, barrier film, bipolar plates two-in-one component 14, barrier film, bipolar plates two-in-one component 14, barrier film, the mode of cathode plate 13 is assembled, and forms battery pack.Wherein, number of repeat unit modulation voluntarily.
Referring to Fig. 3, the main pseudosection that this figure is battery pole plates, comprises flow field 15, air inlet runner 16, and, go out flow channel 17, thermocouple jack 18.Plate 12 and cathode plate 13 have identical structure.During assembling half-cell anode and cathode, just each several part assembly is placed in the middle of flow field 15.When battery heats up, thermocouple is inserted in thermocouple jack 18, to monitor battery temperature constantly.
Referring to Fig. 4, the surface in resistance alkali plate gas duct 19 has glaze structure 20, due to capillary effect, only allows gas to pass through, and does not allow liquid to pass through, and can play the effect of blocking solution ventilation.Glaze structure 20 can be chemical inertness or the SiO to alkali non-activity
2, and thickness is at 0.5-1.2mm, and surperficial Circularhole diameter is at 1-2mm.And with collector plate and gas flowfield connection be the silver metal layer through chemical plating, to stop high temperature corrosion and to improve electricity and lead.
Resistance alkali plate allows gas to pass through, but does not allow liquid alkali to pass through; Core-shell type catalyst surface is surrounded by resistance alkali function and protecting layer, effectively stops alkalosis; The present invention has dual resistance alkali function, and the present invention can be applied to methane and reform in directly, effectively solves the volatile loss of fused carbonate electrolyte high temperature and reforming catalyst is poisoning and the key issue of inactivation, has greatly improved catalyst useful life.
Claims (5)
1. the directly interior reformation molten carbonate fuel cell structure of methane, comprises the plate, collector plate, anode, electrolyte membrance, negative electrode, collector plate, the cathode plate that stack successively, it is characterized in that: between pole plate and collector plate, be provided with resistance alkali plate;
Described resistance alkali plate is soda blocking collector plate, is coated Si O
2the collector plate of zeolite rete, it allows reactant and product to pass through, and does not allow alkali to pass through, and it is coated with SiO by porous plate duct inner surface
2zeolite rete forms, SiO
2zeolite rete forms glaze structure, SiO
2zeolite membrane layer material is SiO
2; The surface of resistance alkali plate gas passage has glaze structure,, for the silver metal layer through chemical plating, to stop high temperature corrosion and to improve electricity, leads with collector plate and gas flowfield connection;
In described plate runner, can place reforming catalyst, above runner, stack successively resistance alkali plate, collector plate and anode;
Described reforming catalyst is for take the methane reforming catalyst that nickel is activated centre, and catalyst surface has been coated zeolite rete, has formed core-shell type reforming catalyst; Catalyst particle size is 100 microns-5 millimeters.
2. battery structure as claimed in claim 1, is characterized in that: described pole plate plate body material is steel plate, and it is high that surface is coated with conductance, the metal that corrosion resistance is strong, and plate activates rear surface nickel plating by copper facing, cathode plate electroplate; Pole plate is provided with gas flow and air inlet/outlet, and pole plate side is provided with thermocouple temperature measurement jack.
3. battery structure as claimed in claim 1, is characterized in that: in cathode plate runner, can place solid carbonate powder, stack successively collector plate and negative electrode above runner;
Solid carbonate is alkali carbonate, and its particle diameter is 10 microns-100 microns.
4. battery structure as claimed in claim 1, is characterized in that: described collector plate is porous stainless steel material, and to be coated with conductance high on collector plate surface, the argent that corrosion resistance is strong.
A methane directly in reformation molten carbonate fuel cell group, it is characterized in that: when being assembled into battery pack, two end plates of battery pack are respectively plate and cathode plate, centre stacks battery structure claimed in claim 1 as element cell, is provided with bipolar plates between element cell; Bipolar plates is by plate fasten one relative to the cathode plate back side, and the formation of its both sides is consistent with plate and cathode plate respectively.
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|---|---|---|---|
| CN201010207016.1A CN102299360B (en) | 2010-06-23 | 2010-06-23 | Methane direct internal reforming molten carbonate fuel cell (DIR-MCFC) structure and battery pack |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010207016.1A CN102299360B (en) | 2010-06-23 | 2010-06-23 | Methane direct internal reforming molten carbonate fuel cell (DIR-MCFC) structure and battery pack |
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| CN107331882B (en) * | 2017-06-07 | 2019-10-29 | 中国科学院广州能源研究所 | A kind of carbon-containing fuel chemical chain reforms the device and method of producing synthesis gas and the total coproduction of solid oxide fuel cell power generation |
| CN110600776A (en) * | 2019-09-29 | 2019-12-20 | 武汉华科福赛新能源有限责任公司 | Internal reforming solid oxide fuel cell stack |
| CN114094242B (en) * | 2021-12-29 | 2023-09-15 | 重庆大学 | Flow type photoelectrochemical cell for treating desulfurization wastewater and simultaneously reducing carbon dioxide |
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| CN101537374A (en) * | 2009-04-27 | 2009-09-23 | 大连理工大学 | Method for protecting reforming catalyst of molten carbonate fuel cell and applications thereof |
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