CN104157895B - The light-duty pile of polymer dielectric film fuel cell and manufacture method thereof - Google Patents
The light-duty pile of polymer dielectric film fuel cell and manufacture method thereof Download PDFInfo
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- CN104157895B CN104157895B CN201410370325.9A CN201410370325A CN104157895B CN 104157895 B CN104157895 B CN 104157895B CN 201410370325 A CN201410370325 A CN 201410370325A CN 104157895 B CN104157895 B CN 104157895B
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/24—Grouping of fuel cells, e.g. stacking of fuel cells
- H01M8/249—Grouping of fuel cells, e.g. stacking of fuel cells comprising two or more groupings of fuel cells, e.g. modular assemblies
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04082—Arrangements for control of reactant parameters, e.g. pressure or concentration
- H01M8/04201—Reactant storage and supply, e.g. means for feeding, pipes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/10—Fuel cells with solid electrolytes
- H01M8/1016—Fuel cells with solid electrolytes characterised by the electrolyte material
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/10—Fuel cells with solid electrolytes
- H01M2008/1095—Fuel cells with polymeric electrolytes
-
- 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
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Abstract
The present invention relates to the light-duty pile of polymer dielectric film fuel cell and the manufacture method thereof of the light-duty pile technical field of metal bipolar plate fuel battery. The light-duty pile of polymer dielectric film fuel cell comprises metal double polar plates, membrane electrode and fuel gas air inlet distributing pipe, fuel gas give vent to anger distributing pipe, top end plate and bottom end plate. Membrane electrode and metal double polar plates intert and laminate successively, fuel gas air inlet distributing pipe and the fuel gas distributing pipe of giving vent to anger is serially connected membrane electrode and metal double polar plates, fuel gas distributes the supply of employing distributing pipe, make metal double polar plates only a side there is oxidant flow field, without build common conduit on metal double polar plates, distribution of gas is even, air-tightness good, and metal bipolar board machining process is very simple, and cost is low.
Description
Technical field
The invention belongs to the light-duty pile technical field of metal bipolar plate fuel battery, particularly polymerizationThe light-duty pile of thing dielectric film fuel cell and manufacture method thereof.
Background technology
Polymer dielectric film fuel cell adopts polymer film as electrolyte, generally adopts at presentFilm be perfluoro sulfonic acid membrane, on fluorine carbon backbone chain with sulfonic acid group replace side chain. With other liquidElectrolyte fuel battery is compared, and polymer dielectric film fuel cell adopts solid polymer as electricityXie Zhi, has avoided the Operating Complexity of liquid electrolyte, can reduce widely again electrolyte thickness,Thereby improve the energy density of battery.
The core component of polymer dielectric film fuel cell is called membrane electrode assembly, comprises proton friendshipThe thin layer that changes film, the moon/anode catalyst layer, the moon/anode gas diffusion layer forms. Widely used poly-Compound dielectric film is as the Nafion film of du pont company, the Dow film of Dao Er company, Japan eastThe BAM of the Aciplex-S film of sea chemical industry Co., Ltd., Canadian Ba Lade advanced material companyFilm etc. Gas diffusion layers is generally graphite carbon paper or carbon fiber woven cloth, then passes through PTFE hydrophobic placeReason. On gas diffusion layers, need to adhere to the active PTFE/ carbon-coating of one deck, promote multiphase mass transfer and Catalytic LayerExcellent support effect. Memberane Electrode mainly contains two types: 1) catalyst is adopted to silkThe methods such as reticulated printing, coating, spraying, curtain coating are prepared on gas diffusion layers surface, after sintering, useIon exchange resin solution impregnation, the dry rear electrode that forms is then being put between two-layer electrodePEM hot forming (being pressure sintering). This preparation technology is simple, but Catalytic Layer and polymerDielectric film is in conjunction with poor, and catalyst granules likely enters into gas diffusion layers hole,Reduce catalyst utilization in membrane electrode, current this method for preparing membrane electrode is eliminated gradually.2) adopt transfer printing or direct spraying method that catalyst is prepared on polymer dielectric film. With hot pressingMembrane electrode syntheti c route is compared, and this process is comparatively complicated, but Catalytic Layer and polymer dielectricFilm combination is better, difficult peeling off, and catalyst has higher utilization rate, and membrane electrode durability isGood, in fuel cell membrane electrode preparation technology, generally adopt at present. In addition, develop at presentLow cost, high-performance and long-life membrane electrode of new generation. The thickness of membrane electrode assembly is generally numberHundred microns. Between each MEA, add that sealing ring and bipolar plates form battery pile. Fuel cell pileGenerally alternately laminate and be sealed to form by n sheet membrane electrode and n+1 sheet bipolar plates. In pile, bipolarPlate be used for separating and distribution monomer between reacting gas, also play water management, heat conduction, collector andThe important function of mechanical support. Bipolar plates comprises graphite bi-polar plate, composite dual-electrode plates and metal bipolarPlate. Wherein, to have electronic conductivity compared to graphite and composite dual-electrode plates high, good for metal double polar platesGood hot conduction, high-mechanical property, high chemical stability, alloy compositions selectance are extensively, very justIn features such as extensive punch forming High-efficient Production, it is study hotspot in recent years. When relating to fuelWhen battery pile, consider metal from the demand side of fuel cell high-specific-power and large-scale productionBipolar plates has obvious advantage compared to graphite and composite dual-electrode plates. Especially in traffic application,Metal double polar plates has become main flow. Metal double polar plates is applicable to reducing thickness, batch production very much, hasBe beneficial to the volumetric power density that has improved fuel cell, also reduced manufacturing cost simultaneously. Metal is twoThe main challenge that pole plate faces is contact resistance and corrosion. At present, stainless steel, Ni base alloy, TiBase alloy and Al base alloy double pole plate are widely studied, and content comprises alloy double pole plate and finishingAlloy double pole plate. Aspect the research of alloy double pole plate, 310,904L, 349TM, 446 and 2205Alloy is considered to can be applicable to the alloying metal bipolar plates of polymer dielectric film fuel cell. ExistingSome metal double polar plates generally adopt the works such as sheet metal punch forming, welding, face coat processingOrder is prepared from, and all has flow field between metal double polar plates both sides and interlayer. Flow field generally comprises skyAirflow field, hydrogen flow field and cooling medium flow field.
Chinese patent CN200410082920.0 discloses a kind of impacted metal double polar plate structure and fuel electricityPond pile preparation method, bipolar plates positive and negative is symmetrically arranged with respectively fuel gas channel, oxidantGas passage, coolant guiding channel and bipolar plate flow field district. In bipolar plate flow field district, be provided with gasBody flow-field channel and for the flow field boss of collected current, flow-field channel and flow field boss are staggered,The positive and negative of stamped bipolar plates is all with the seal groove of putting potted component, and seal groove is arranged at fuel gasBetween body passage, oxidizer gas channel, coolant guiding channel; Chinese invention patentCN200710011002 discloses a kind of metal double polar plates, comprises a metal anode unipolar plate, oneIndividual metallic cathode unipolar plate, is respectively arranged with oxidant, goes back in anode unipolar plate and negative electrode unipolar plateThe highway of former dose and cooling medium is provided with water between anode unipolar plate and negative electrode unipolar plateFrame, is filled with the stretching wire netting as water discharge flow field in water frame, described oxidant highway,The edge of reducing agent highway, cooling medium highway and anode unipolar plate and negative electrode unipolar plateAll outwards turn down the projection that has tubular; Chinese invention patent CN200710043435.4 discloses oneThe manufacture method of proton exchange film fuel cell electric piling, key step is: 1), under normal temperature, add hot temperatureDegree, is hot pressed into wavy by plane MEA; 2) adopt fine Sheet Metal Forming Technology by planar ultra-thin metal polar platePunching, then pole plate with holes is struck out to the undaform matching with wavy MEA, obtain unipolar plate;3) adopt laser welding technology that a pair of unipolar plate is welded into bipolar plates; 4) adopt cyclic voltammetry to existOne deck conducting polymer polyaniline is electroplated in metal surface; Chinese invention patent CN201010288866.9Announced single pond and the pile of metal double polar plates and formation thereof, described metal double polar plates is with oneDetermine the on-plane surface arc of curvature, the negative electrode unipolar plate of being made by sheet metal and anode unipolar plate phaseCombination is formed. Cathode and anode chamber, cooling medium chamber and flow field area groove and the boss convex-concave of two platesShape is mutually corresponding, forms respectively fuel gas channel, oxidizer gas channel, cooling medium logicalRoad. Membrane electrode, single bipolar plates are combined and just can form fuel cell list pond, by multiple listsPond stack couples together and can form pile.
All there is following problem in the fuel cell pile that above-mentioned patent builds with metal double polar plates: 1. goldBelong to the multilayer flow field that bipolar plates all has fuel flow field, oxidant flow field and coolant flow field composition, goldBelong to bipolar plates processing technology complexity, cost is high; 2. the flow field being made up of runner in bipolar plates existsRidge and chute, reacting gas cannot be uniformly distributed on whole active area, causes fuel cellEnergy is low, the life-span is short; 3. the metal bipolar plate thickness with three lamellar fields is large, causes the volume of pilePower density declines; 4. the normal operation of pile needs hydro-thermal ADMINISTRATION SUBSYSTEM, electricity generation system complexity,And causing the specific power of pile electricity generation system lower, General System generating specific power is lower than 500W/kg.
Summary of the invention
The object of the invention is to, propose the light-duty electricity of a kind of polymer dielectric film fuel cellHeap, the light-duty pile of described polymer dielectric film fuel cell comprise metal double polar plates, membrane electrode,Fuel gas turnover distributing pipe, top end plate and bottom end plate, is characterized in that,
Described metal double polar plates is by piece of metal corrugated plating and piece of metal plate welding or stickyKnot forms, and in the perforate of metal double polar plates two ends, described membrane electrode is at one layer of polymericThe both sides of dielectric film distribute successively Catalytic Layer and gas diffusion layers, its two ends have and goldBelong to bipolar plates end positions, big or small same holes, membrane electrode and metal plate contact side are filmThe anode of electrode, with metal corrugated plate contact side be membrane electrode cathode; Described top end plateAlso have and metal double polar plates end positions, big or small same holes with bottom end plate two ends; TwoMeasure-alike fuel gas turnover distributing pipe vertically inserts in the hole at bottom end plate two ends to be consolidatedFixed, the borehole jack at piece of metal bipolar plates two ends passes in and out on distributing pipes at two fuel gas,Make in metal plate side direction, then by the borehole jack at a slice membrane electrode two ends at two fuel gasOn turnover distributing pipe, make, under membrane electrode anode side, to be laminated on the flat board of metal double polar platesOn; And then the borehole jack at piece of metal bipolar plates two ends is divided two fuel gas turnoverOn pipe arrangement, make in metal plate side direction, corrugated plating faces down and contacts with the negative electrode of membrane electrode;According to this order, N sheet membrane electrode and N+1 sheet metal double polar plates are laminated, finally putTop end plate, is assembled into pile; By membrane electrode, fuel gas air inlet distributing pipe, fuelThe give vent to anger engagement edge sealing of distributing pipe, metal plate of gas.
The anode that described membrane electrode and metal plate contact side are membrane electrode, with wavy metalPlate contact side is membrane electrode cathode.
Described fuel gas turnover distributing pipe comprises fuel gas air inlet distributing pipe and fuel gasThe body distributing pipe of giving vent to anger, opens at membrane electrode anode and fuel gas turnover distributing pipe contact siteFuel gas dispensing orifice.
Described metal plate is positive plate, and metal corrugated plate is minus plate the coldplate of holding concurrently,Sheet metal thickness is 0.03-0.3 millimeter.
The gas diffusion layers of described membrane electrode is porous media.
Described polymer dielectric film is thin enhancement mode amberplex, and film thickness is 5～50In micrometer range, realize and generating electricity from humidification.
Described metal double polar plates adopts surface treatment mode to carry out good conduction and corrosion resistant coating placeReason, comprises chemical plating, plating and PVD, Implantation and surface modification treatment technology; ItsMiddle surface modification treatment technology is by metal double polar plates surface noble metal-coating layer, titanium nitrideWith titanium carbide layer, ambrose alloy phosphorus layer, CN layer.
Described by membrane electrode, fuel gas air inlet distributing pipe, fuel gas give vent to anger distributing pipe,The engagement edge of metal plate is sealed into a glue sealing, forms the airtight of electrochemical reactionAnode cavity; In pile, all such anode cavitys form polymer dielectric film fuelThe anode of the light-duty pile of battery, is seal chamber, the equal blow-by of remainder.
The manufacture method of the light-duty pile of described polymer dielectric film fuel cell, its featureBe, concrete preparation process is as follows:
1. utilize fuel gas turnover distributing pipe serial connection positioning metal bipolar plates and membrane electrode,Fixing electric pile structure;
2. membrane electrode anode sides is laminated in metal double polar plates platen surface, at membrane electrodeAnode and fuel gas turnover distributing pipe contact site perforate pass in and out anode for fuel gasCavity participates in electrochemical reaction;
3. adopt some glue diaphragm seal electrode fuel gas turnover distributing pipe, metal double polar plates to put downEngagement edge between plate, the airtight anode cavity of formation electrochemical reaction;
4. the metal corrugated plate side of metal double polar plates is laminated on to membrane electrode cathode side, shapeWhat become electrochemical reaction connects open negative electrode cavity with atmosphere;
5. repeating step 2, step 3, step 4, step 2 successively, forms multilayer film electricityThe light-duty pile that the utmost point and metal double polar plates alternately laminate, anode seal, negative electrode are open.
The invention has the beneficial effects as follows metal double polar plates only a side there is oxidant flow field, make goldBelong to bipolar plates processing technology very simple, cost is low, and has the metal double polar plates of a lamellar fieldThickness reduces greatly, and the volumetric power density of pile is declined; In the anode-side of metal double polar platesFor planar structure, the flow field forming without runner; Membrane electrode adopts porous gas diffusion layer to fireMaterial distributes, and reacting gas is uniformly distributed, and fuel battery performance is high, the life-span is long; Pile justOften move without hydro-thermal ADMINISTRATION SUBSYSTEM, electricity generation system is very simple, makes pile electricity generation systemSpecific power very high, general whole electricity generation system specific power can be up to 800W/kg; Fuel gasDistribute and adopt distributing pipe supply, without build common conduit, distribution of gas on metal double polar platesEvenly, air-tightness is good; Need not seal element machining, what the sealing of some glue had improved pile widely canBy property and batch production efficiency.
Brief description of the drawings
Fig. 1 is metal double polar plate structure schematic diagram provided by the invention.
Fig. 2 is the light-duty electric pile structure of polymer dielectric film fuel cell provided by the inventionSchematic diagram,
Wherein 1-metal plate; 2-metal corrugated plate; 3-bipolar plates; 4-polymer electrolytic;5-Catalytic Layer; 6-gas diffusion layers; 7-membrane electrode; The sealing of 8-point glue; 9-fuel gasAir inlet distributing pipe; The 10-fuel gas distributing pipe of giving vent to anger; 11-fuel gas dispensing orifice; 12-Top end plate; 13-bottom end plate; 14-fuel gas turnover gas distributing pipe.
Detailed description of the invention
The invention provides the light-duty pile of a kind of polymer dielectric film fuel cell and manufacturer thereofMethod,
Wherein the metal double polar plates 3 of the light-duty pile of polymer dielectric film fuel cell adopts oneDull and stereotyped 1 welding of sheet metal corrugated plate 2 and piece of metal or bonding form metal double polar plates 3,On metal corrugated plate 2 and metal plate 1, all without punching press flow field, only rely on the protuberance of corrugated plating 2Form the runner of cathode air, take into account heat radiation object by cross-ventilation simultaneously. At metal plate1 side is utilized fuel gas height diffusion coefficient characteristic, realizes the equal of fuel gas by porous mediaEven distribution, need not punching press runner distribution fuel gas. In this metal double polar plates 3, nothing is cold separatelyBut medium runner, at metal corrugated plate 2 sides, the air flow channel that utilizes metal corrugated plate 2 to swellBetween hollow structure Forced Convection Air realize high efficiency and heat radiation. For improving the output of fuel cellPower, can assemble into pile by above-mentioned N+1 sheet metal double polar plates 3 by N sheet membrane electrode,Improve output voltage. Below in conjunction with structural representation and specific embodiment, the present invention is done into oneStep explanation, but the present invention is not limited to following examples.
Consult Fig. 1, to the light-duty pile of polymer dielectric film fuel cell of the present invention and manufacture thereofMethod further describes. The structural representation of metal double polar plates 3 as shown in Figure 1, adopts oneSheet metal plate 1 welds with metal corrugated plate 2 or bonding mode forms metal double polar plates 3, goldBelonging to dull and stereotyped 1 is positive plate, and metal corrugated plate 2 is minus plate the coldplate of holding concurrently. Metallic sheet material withPrior art is identical, can adopt stainless steel, titanium material and titanium alloy, aluminium and aluminium alloy sheet.Sheet metal thickness is being controlled within the scope of 0.03～0.3 millimeter. The sheet material of metal plate 1 and metal waveThe sheet material of card 2 can be identical or different, and metal corrugated plate 2 can adopt metal plate 1 to be prepared from,The concavo-convex width that ripple is alternate can be wide, also can be not wide. The concaveconvex structure of ripple and filmThe runner that electrode is built up is short, is conducive to promote that reaction air and cooling-air pass through fast,Reduce resistance to mass tranfer and improve cooling effect. In addition, for reducing metal double polar plates 3 and membrane electrode 7Between contact resistance and improve the decay resistance under fuel cell environment, metal plate 1 withMetal corrugated plate 2 can adopt surface treatment mode to carry out good conduction and the processing of corrosion resistant coating comprisesChemical plating, plating and PVD, Implantation and surface modification treatment technology; Wherein surface modificationTreatment technology is by metal double polar plates surface noble metal-coating layer, titanium nitride and titanium carbide layer, nickelCopper phosphorus layer, CN layer.
With reference to Fig. 2, the light-duty pile of polymer dielectric film fuel cell of the present invention is by metal bipolarPlate 3, membrane electrode 7 and fuel gas turnover distributing pipe 14, top end plate 12 and bottom end plate 13Form. Wherein, membrane electrode 7 is by one layer of polymeric dielectric film 4, and is distributed in its both sidesTwo-layer Catalytic Layer 5 and gas diffusion layers 6 form. Polymer dielectric film 4 is thin enhancement modeAmberplex, film thickness is in 5～50 micrometer ranges, and controlling diaphragm thickness is conducive to reduce combustionThe material internal resistance of cell, simultaneously due to negative electrode Faraday water inverse osmosis faster, the aquation of filmEffect has also improved, thereby can make fuel cell just can realize by external humidification reacting gasGenerate electricity from humidification. Two-layer catalysis 5 comprises cathode catalysis layer and anode catalyst layer, mainly by catalysisAgent and amberlite lipoprotein solution are prepared from, at present, and nanometer Pt, the catalysis of Pt alloy carrier typeAgent is the catalyst the most often adopting. Gas diffusion layers 6 comprises cathode gas diffusion layer and sunUtmost point gas diffusion layers, is mainly made up of porous carbon fiber substrate and microporous layers, wherein porous carbon fibreDimension substrate is as carbon paper or carbon cloth, and thickness is 200～400 μ m, and microporous layers adopts polytetrafluoroethylene (PTFE)Be prepared from carbon black, thickness is in 100 μ m, and main rising promotes Catalytic Layer and gas diffusionThe efficient mass transfer of layer, avoids the effect of generating electrodes water logging. In the present invention, fuel gas entersGas distributing pipe 9 and fuel gas are given vent to anger distributing pipe 10 in pile inside, by above-mentioned membrane electrode 7 and goldBelong to bipolar plates 3 and be serially connected, and form integrated light pile by some glue sealing 8. FuelGas air inlet distributing pipe 9 and fuel gas give vent to anger distributing pipe 10 and membrane electrode 7 and metal double polar plates 3Serial connection comprise the serial connection of structure and the serial connection of fuel gas, fuel gas air inlet distributing pipe 9 HesFuel gas is given vent to anger on distributing pipe 10 and is fixed with successively membrane electrode 7 and metal double polar plates 3, membrane electrodeThe required fuel gas of 7 electrochemical reaction is divided by fuel gas by fuel gas air inlet distributing pipe 9Join hole 11 and supply fuel, membrane electrode 7 electrochemical reaction required airs are by the ripple connecting with atmospherePassage supply with, electrochemical reaction produce anode exhaust gas by fuel gas dispensing orifice 11 through fuel gasThe body distributing pipe 10 of giving vent to anger is discharged. The anode of the light-duty pile of the present invention is seal chamber, remainderAll need not seal. Anode seal mainly seals membrane electrode 7 anode-side and fuel gas by a glueThe give vent to anger metal plate 1 of distributing pipe 10, metal double polar plates 3 of body air inlet distributing pipe 9 and fuel gasA glue sealing is carried out in lateral edges contact position, forms anode seal cavity. For improving fuel cellPower output, can assemble into pile by above-mentioned N+1 sheet metal double polar plates by N sheet membrane electrode,Improve output voltage.
With reference to Fig. 2, the electricity generating principle of the light-duty pile of the present invention is according to the type of polymer dielectricDifference can be divided into two kinds of principles, in the time that polymer dielectric film 4 is cation-exchange membrane: combustionMaterial gas enters by fuel gas air inlet distributing pipe 9 and the fuel gas distributing pipe 10 of giving vent to angerAnode-side between the metal plate 1 of membrane electrode and metal double polar plates 3, air passes through metalMetal corrugated plate 2 passages of bipolar plates 3 arrive membrane electrode cathode side, in anode-side, and fuelGas is dissociated into proton hydrate and electronics on anode catalyst surface, proton hydrate by sun fromProton exchange transmission arrives negative electrode, and electronics flows through load by external circuit and arrives negative electrode.At the catalyst surface of negative electrode, oxygen molecule is in conjunction with the proton hydrate and the electricity that pass over from anodeSon, generates hydrone; In the time that polymer dielectric film 4 is anion-exchange membrane: fuel gasBody enters film electricity by fuel gas air inlet distributing pipe 9 and the fuel gas distributing pipe 10 of giving vent to angerAnode-side between the utmost point 7 and metal double polar plates 3 flat boards 1, air is by bipolar plates corrugated plating2 passages arrive membrane electrode cathode side, and in anode-side, fuel gas is on anode catalyst surfaceBe dissociated into proton hydrate and electronics, electronics flows through load arrival negative electrode by external circuit and oxygen dividesSon generates hydroxyl, and hydroxyl arrives anode by anion-exchange membrane transmission, at anodeCatalyst surface, hydroxyl and proton hydrate generate hydrone.
Embodiment 1
Adopt the thick titanium material of 0.03mm thin plate, strike out titanium material corrugated plating. By above-mentioned a slice titanium materialCorrugated plating is together with a slice titanium material plate sheet welding. Carry out plated surface TiN processing by PVD method,Form fuel battery metal double polar plate. Turnover distributes as fuel gas to adopt two polytetrafluoro pipesPipe, first that two polytetrafluoro pipes are vertically fixing, by after above-mentioned a slice metal double polar plates punching two endsBe serially connected on two polytetrafluoro pipes, and make corrugated surface downward. Then membrane electrode is corresponding at two endsAfter the punching of position, be laminated in metal double polar plates platen surface, enter at membrane electrode anode and fuel gasGo out the perforate of distributing pipe contact site and pass in and out anode cavity participation electrochemical reaction for fuel gas.Adopt dispensing technology that membrane electrode and fuel gas are passed in and out between distributing pipe, metal double polar plates flat boardEngagement edge point glue sealing, form the airtight anode cavity of electrochemical reaction. Equally, willAfter metal double polar plates punching, make corrugated plating side be laminated on membrane electrode cathode side, form electrochemistry anti-That answers connects open negative electrode cavity with atmosphere. Repeat above-mentioned steps and form Multilayer Film Electrode and goldBelong to the light-duty pile that bipolar plates alternately laminates, anode seal, negative electrode are open.
Adopt hydrogen as fuel, air is as oxidant, the mode at air cooling from humidification generatingUnder, more than the specific power of this light-duty pile can reach 900W/kg.
Embodiment 2
Adopt the thick 316L stainless sheet steel of 0.3mm, strike out corrugated plating. By above-mentioned a slice notRust steel corrugated plating is together with a slice titanium material plate sheet welding. Carry out plated surface by electroless plating method expensiveMetal processing, forms fuel battery metal double polar plate. Adopt the aluminum pipe of two surface insulation processingAs fuel gas turnover distributing pipe, first that two aluminum pipes are vertically fixing, by above-mentioned a slice metalAfter bipolar plates punching two ends, be serially connected on two aluminum pipes, and make corrugated surface downward. Then by film electricityThe utmost point is laminated in metal double polar plates platen surface after the punching of relevant position, two ends, at membrane electrode anodePass in and out anode cavity ginseng with fuel gas turnover distributing pipe contact site perforate for fuel gasWith electrochemical reaction. Adopt dispensing technology that membrane electrode and fuel gas are passed in and out to distributing pipe, metalEngagement edge point glue sealing between bipolar plates flat board, the airtight anode of formation electrochemical reactionCavity. Equally, will after metal double polar plates punching, make corrugated plating side be laminated on membrane electrode cathode side,What form electrochemical reaction connects open negative electrode cavity with atmosphere. Repeating above-mentioned steps forms manyThe light-duty pile that layer membrane electrode and metal double polar plates alternately laminate, anode seal, negative electrode are open.
Adopt hydrogen as fuel, air is as oxidant, the mode at air cooling from humidification generatingUnder, more than the specific power of this light-duty pile can reach 800W/kg.
Embodiment 3
Adopt the thick 316L aluminium alloy sheet of 0.1mm, strike out corrugated plating. By above-mentioned a slice aluminiumAlloy corrugated plate and a slice aluminium alloy sheet bond together. Carry out surface by ion implantationCN processes, and forms fuel battery metal double polar plate. Adopt the titanium pipe of two surface insulation processingAs fuel gas turnover distributing pipe, first that two titanium pipes are vertically fixing, by above-mentioned a slice metalAfter bipolar plates punching two ends, be serially connected on two titanium pipes, and make corrugated surface downward. Then by film electricityThe utmost point is laminated in metal double polar plates platen surface after the punching of relevant position, two ends, at membrane electrode anodePass in and out anode cavity ginseng with fuel gas turnover distributing pipe contact site perforate for fuel gasWith electrochemical reaction. Adopt dispensing technology that membrane electrode and fuel gas are passed in and out to distributing pipe, metalEngagement edge point glue sealing between bipolar plates flat board, the airtight anode of formation electrochemical reactionCavity. Equally, will after metal double polar plates punching, make corrugated plating side be laminated on membrane electrode cathode side,What form electrochemical reaction connects open negative electrode cavity with atmosphere. Repeating above-mentioned steps forms manyThe light-duty pile that layer membrane electrode and metal double polar plates alternately laminate, anode seal, negative electrode are open.
Adopt hydrogen as fuel, air is as oxidant, the mode at air cooling from humidification generatingUnder, more than the specific power of this light-duty pile can reach 850W/kg.
Claims (6)
1. the light-duty pile of polymer dielectric film fuel cell, described polymer dielectric filmThe light-duty pile of fuel cell comprise metal double polar plates, membrane electrode, fuel gas turnover distributing pipe,Top end plate and bottom end plate, is characterized in that,
Described metal double polar plates is by piece of metal corrugated plating and piece of metal plate welding or bondingForm, and in the perforate of metal double polar plates two ends, described membrane electrode is in one layer of polymeric electrolysisThe both sides of plasma membrane distribute successively Catalytic Layer and gas diffusion layers, its two ends have and metal bipolarPlate end positions, the hole that size is identical, membrane electrode and metal plate contact side are membrane electrodeAnode, with the metal corrugated plate contact side negative electrode that is membrane electrode; Described top end plate and bottomEnd plate two ends also have and metal double polar plates end positions, big or small identical hole; Two size phasesWith fuel gas turnover distributing pipe vertically insert in the hole at bottom end plate two ends and fix, a sliceThe borehole jack at metal double polar plates two ends, on two fuel gas turnover distributing pipes, makes metal plateIn side direction, then the borehole jack at a slice membrane electrode two ends is passed in and out on distributing pipes at two fuel gas,Make under membrane electrode anode side, be laminated on the flat board of metal double polar plates; And then by a sliceThe borehole jack at metal double polar plates two ends, on two fuel gas turnover distributing pipes, makes metal plate sideUpwards, corrugated plating faces down and contacts with the negative electrode of membrane electrode; According to this order, by N sheet film electricityThe utmost point and N+1 sheet metal double polar plates laminate, and finally put top end plate, are assembled into pile; By filmThe give vent to anger contact of distributing pipe, metal plate of electrode, fuel gas air inlet distributing pipe, fuel gasEdge seal, the airtight anode cavity of formation electrochemical reaction; All anode cavitys in pileBe seal chamber, and in pile, all negative electrode cavitys are the open architecture connecting with atmosphere;
Described fuel gas turnover distributing pipe comprises fuel gas air inlet distributing pipe and fuel gasThe distributing pipe of giving vent to anger, opens fuel at membrane electrode anode and fuel gas turnover distributing pipe contact siteGas distributing hole.
2. the light-duty pile of a kind of polymer dielectric film fuel cell according to claim 1,It is characterized in that, described metal plate is positive plate, and metal corrugated plate is minus plate and holds concurrently coldBut plate, sheet metal thickness is 0.03-0.3 millimeter.
3. the light-duty pile of a kind of polymer dielectric film fuel cell according to claim 1,It is characterized in that, the gas diffusion layers of described membrane electrode is porous media.
4. the light-duty pile of a kind of polymer dielectric film fuel cell according to claim 1,It is characterized in that, described polymer dielectric film is thin enhancement mode amberplex, film thicknessIn 5～50 micrometer ranges, realize and generating electricity from humidification.
5. the light-duty pile of a kind of polymer dielectric film fuel cell according to claim 1,It is characterized in that, described metal double polar plates adopt surface modification treatment technology carry out good conduction andThe processing of corrosion resistant coating, described surface modification treatment technology is that metal double polar plates surface is applied to your goldBelong to layer, titanium nitride layer, titanium carbide layer, ambrose alloy phosphorus layer or CN layer.
6. the light-duty pile of a kind of polymer dielectric film fuel cell according to claim 1,It is characterized in that, described membrane electrode, fuel gas air inlet distributing pipe, fuel gas are given vent to angerThe engagement edge of distributing pipe, metal plate is sealed into a glue sealing.
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| CN105047944B (en) * | 2015-05-29 | 2018-03-27 | 武汉喜玛拉雅光电科技股份有限公司 | A kind of new fuel cell based on graphene thermal electricity management level |
| DE102017130489A1 (en) * | 2017-01-31 | 2018-08-02 | Schaeffler Technologies AG & Co. KG | Bipolar plate for a fuel cell |
| CN107978768B (en) * | 2017-11-10 | 2021-01-15 | 北京英博新能源有限公司 | Fuel cell assembly and preparation method thereof |
| CN108767296A (en) * | 2018-05-15 | 2018-11-06 | 东莞众创新能源科技有限公司 | Fuel cell membrane electrode process units |
| CN108550886B (en) * | 2018-06-07 | 2021-02-19 | 锋源新创科技（北京）有限公司 | Proton exchange membrane fuel cell stack bonding and sealing method |
| FR3097377B1 (en) * | 2019-06-17 | 2022-04-22 | Faurecia Systemes Dechappement | PEMFC fuel cell |
| CN110380081B (en) * | 2019-07-24 | 2020-08-25 | 珠海格力电器股份有限公司 | Air-cooled fuel cell stack and system thereof |
| CN111952615B (en) * | 2020-08-17 | 2021-07-30 | 浙江大学 | Arrangement structure of fuel cell fine flow field for enhancing mass transfer |
| CN112803054B (en) * | 2021-01-05 | 2021-12-14 | 广东省科学院新材料研究所 | Electrochemical reaction device and manufacturing method thereof |
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| CN101101989A (en) * | 2006-07-03 | 2008-01-09 | 南亚电路板股份有限公司 | Fuel battery module with wave current track board |
| CN103618091A (en) * | 2013-12-02 | 2014-03-05 | 新源动力股份有限公司 | High-integration-level fuel cell bipolar plate for optimizing distribution of reaction gas |
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