CN109860655A - Feed separation transmits fuel-efficient and utilizes fuel cell and its working method - Google Patents
Feed separation transmits fuel-efficient and utilizes fuel cell and its working method Download PDFInfo
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- CN109860655A CN109860655A CN201910053651.XA CN201910053651A CN109860655A CN 109860655 A CN109860655 A CN 109860655A CN 201910053651 A CN201910053651 A CN 201910053651A CN 109860655 A CN109860655 A CN 109860655A
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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
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- 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
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Abstract
The present invention discloses a kind of feed separation transmission fuel-efficient and utilizes fuel cell and its working method, anode flow field board and cathode flow field plate is arranged in fuel cell, raw material supply pipeline and branch are independently arranged in anode flow field board and cathode flow field plate, product discharge line and branch, and it is provided as hydrogen gas product discharge line, hydrogen feed pipe road and branch that product secondary recovery utilizes, oxygen product discharge line, oxygen supply branch, not only raw material and product separation conveying, but also product oxygen and hydrogen are introduced into secondary use in electrode；It ensure that the high concentration of Electrode Negative oxidized object, improve reaction efficiency, improve fuel oxidizer utilization rate, play the discharging efficiency of battery to greatest extent.
Description
Technical field
The present invention relates to field of fuel cell technology, and in particular to a kind of feed separation transmission fuel-efficient is electric using fuel
Pond and its working method.
Background technique
Fuel cell technology is a kind of new-generation technology, which can will be present in the chemistry in fuel and oxidant
It can be converted into electric energy, there is efficient, pollution-free, noiseless, high reliablity, modularization, load variation can quickly be rung
Remarkable advantages should be waited, it is considered to be solve the ultimate scheme of energy crisis.Fuel cell is mainly by amberplex, anodic-cathodic
It is constituted with bipolar plates.Membrane electrode (the membrane being wherein made of cathode electrode, amberplex and anode electrode
Electrode assembly, MEA) it is the place that electrochemical reaction occurs for fuel cell.Fuel and oxidant each lead into electricity
The anode and cathode in pond.It is passed through fuel (such as H of anode2、CH3OH、CH3CH2OH、CO(NH2)2、NaBH4, HCOONa etc.) occur
Oxidation reaction releases electronics, and electronics is flowed into cathode, and oxidant (such as O with cathode by external circuit2、H2O2Deng) combine
Reduction reaction occurs, while ion is moved to cathode (or anode) by dielectric film, constitutes circuit.
In the fuel cell of numerous types, boron hydride (sodium borohydride, potassium borohydride etc.) is due to fuel energy density
The advantages that high, convenient for storage and transport, it is considered to be the ideal fuel of fuel cell, while hydrogen peroxide is due to having efficiently also
Originality is often used as the oxidant of alkaline fuel cell.Therefore, it is by fuel, hydrogenperoxide steam generator of borohydride solution
The fuel cell of oxidant is more and more applied.
As the key position of direct liquid fuel battery, flow field plays conveying fuel, distribution fuel, recovery product
Function plays very crucial effect in entire fuel cell operation.Current fuel cell anode flow field mainly includes snake
Shape flow field, parallel flow field, discrete flow field, interdigitated flow field etc. mainly pass through expansion of the fuel when electrode side is flowed
The effect of dissipating enters electrode reaction.In this course, the flowing with fuel in runner and diffusion reaction in the electrodes, combustion
Material constantly consumption product constantly enters in runner, and the concentration of fuel gradually decreases, this causes electrode fuel concentration distribution uneven
It is even, electrode reaction efficiency is reduced, further reduced the working efficiency of direct liquid fuel battery.
Meanwhile borohydride solution is easy to happen hydrolysis under field conditions (factors) and generates hydrogen, hydrogen peroxide in natural conditions
Servant is easy to produce oxygen, this problem reduces fuel and oxidant chemical energy to the conversion ratio of electric energy to a certain extent；Together
When in conventional flow path, generated gas and fuel are easy to generate blending, it is difficult to be discharged, be easy to be trapped in inside battery,
Influence the efficient operation of battery.
Therefore, fuel Products blending, the fuel concentration distribution occurred during flowing reactive for fuel-cell fuel
Unevenly, the problems such as cell reaction low efficiency, a kind of fuel Products mutually separate transmission downstream, fuel concentration is uniformly distributed, fuel
The high-efficiency fuel cell that oxidant efficiently utilizes urgently occurs.
Summary of the invention
In view of the above-mentioned problems of the prior art, the purpose of the present invention is to provide a kind of uniformly circulation, fair currents to transmit,
Multi-class propagation, highly effective reaction feed separation transmission fuel-efficient utilize fuel cell and its working method, improve oxidized
Agent utilization rate improves the working efficiency of fuel cell.
In order to achieve the above objectives, the present invention is achieved by the following scheme:
Feed separation transmits fuel-efficient and utilizes fuel cell, including the anode flow field being arranged on fuel cell main body
Plate, anode buffer chamber, anode electrode, exchange membrane, cathode electrode, cathode cushion chamber and cathode flow field plate；
Boron hydride feeding pipe, boron hydride product discharge pipe are independently provided in the anode flow field board
Road, hydrogen gas product discharge line and hydrogen feed pipe road, be additionally provided in anode flow field board respectively with boron hydride feeding pipe,
The boron hydride that boron hydride product discharge line, hydrogen gas product discharge line are connected to hydrogen feed pipe road supplies branch, boron
Hydride product is discharged branch, hydrogen gas product discharge branch and hydrogen and supplies branch, and each branch way outlet is uniformly interspersed and divides
It is not connected to anode buffer chamber；
Hydrogen peroxide feeding pipe, hydrogen peroxide product discharge pipe are independently provided in the cathode flow field plate
Road, oxygen product discharge line and oxygen feeding pipe road, be additionally provided in cathode flow field plate respectively with hydrogen peroxide feeding pipe,
The hydrogen peroxide that hydrogen peroxide product discharge line, oxygen product discharge line are connected to oxygen feeding pipe road supplies branch, mistake
Hydrogen oxide product is discharged branch, oxygen product discharge branch, oxygen and supplies branch, and each branch way outlet is uniformly interspersed and difference
It is connected to cathode cushion chamber；
It is provided with anode electrode distance piece in the anode electrode, cathode electrode distance piece is provided in cathode electrode,
Electrode is isolated by anode electrode distance piece and cathode electrode distance piece up and down is divided into upper semisection and lower semisection, makes fluid in electrode
Upper lower semisection does not circulate mutually；
Hydrogen gas product discharge branch and hydrogen supply branch and anode buffer chamber communicating position are located at anode electrode upper semisection,
Boron hydride supply branch and boron hydride product discharge branch and anode buffer chamber communicating position are located at anode electrode lower semisection；
Meanwhile boron hydride product discharge line is located at anode flow field board lower semisection, hydrogen feed pipe road is located at anode flow field board upper half
Section, boron hydride product discharge line is connected to hydrogen feed pipe road, close to outlet port in boron hydride product discharge line
It is provided with anode gas-liquid separation section；
Oxygen product discharge branch, oxygen supply branch and the cathode cushion chamber communicating position is located on cathode electrode
Half section, hydrogen peroxide supply branch, hydrogen peroxide product discharge branch and cathode cushion chamber communicating position are located under cathode electrode
Half section；The hydrogen peroxide product discharge line is located at cathode flow field plate lower semisection, and oxygen feeding pipe road is located at cathode flow field
Plate upper semisection, hydrogen peroxide product discharge line are connected to oxygen feeding pipe road, close to out in hydrogen peroxide product discharge line
Mouth position is provided with cathode gas-liquid separation degree section.
Further, the anode buffer chamber is the chamber portion of the anode current collector plate with pore size distribution, anode current collector plate
In duct and hydrogen peroxide supply branch, hydrogen peroxide product discharge branch, hydrogen gas product discharge branch and hydrogen gas product supply
It is connected to branch；Cathode cushion chamber is the chamber portion of the cathode collector plate with pore size distribution, the duct in cathode collector plate with
Hydrogen peroxide supplies branch, hydrogen peroxide product discharge branch, oxygen product discharge branch, oxygen supply branch connection.
Further, the cathode collector plate and anode current collector plate use the conductive material of inorganic non-metallic or metal extremely
At.
Further, the exchange membrane is anion-exchange membrane or neutral exchange membrane.
Further, the anode electrode and cathode electrode are the conductive gold for having porous structure coated with corresponding catalyst
Belong to material or carbon material, structure include supporting layer, Catalytic Layer and diffusion layer.
Further, the anode electrode distance piece and cathode electrode distance piece are metal or non-metal flat plate.
Further, setting opens up the hydrogen gas product being connected to hydrogen gas product discharge line and goes out at the top of the anode flow field board
Mouthful, bottom opens up the boron hydride import being connected to boron hydride feeding pipe and is connected to boron hydride product discharge line
Boron hydride product exit；
Oxygen product outlet, the bottom being connected to oxygen product discharge line is opened up at the top of the cathode flow field plate to open up
The hydrogen peroxide inlet being connected to hydrogen peroxide feeding pipe and the hydrogen peroxide being connected to hydrogen peroxide product discharge line produce
Object outlet.
A kind of working method of fuel cell, comprising the following steps:
Step S 100: fuel is evenly distributed into electrode:
Borohydride solution is by being evenly distributed to boron hydride by boron hydride feeding pipe under the action of pump work
Branch is supplied, is further directly entered in anode electrode；Meanwhile hydrogenperoxide steam generator is supplied under pump work effect by hydrogen peroxide
It is evenly distributed to hydrogen peroxide supply branch to pipeline, is further directly entered in cathode electrode；
Step S200: battery discharge reaction:
Cathode side hydrogen peroxide occurs reduction reaction in cathode electrode surface and obtains the electronics from external circuit, generates hydrogen-oxygen
Root enters anode-side by exchange membrane, and in anode electrode surface and the hydroxyl from cathode side oxygen occurs for anode-side boron hydride
Change reaction, generates the products such as electronics and water, electronics leads to cathode side by external circuit, while anode-side boron hydride in the battery
Hydrolysis occurs under field conditions (factors) and generates the products such as hydrogen, cathode side hydrogen peroxide, which decomposes to react, generates the production such as oxygen
Object；
Step S300: primary product fair current outflow separation:
In anode-side, after the reaction was completed, reaction product and hydrolysate are discharged boron hydride by boron hydride product
Branch enters boron hydride product discharge line, and under gravity and the effect of anode gas-liquid separation section, hydrogen is carried on a small amount of moisture
It is advanced into the hydrogen feed pipe road that top is connected to boron hydride product discharge line, liquid product downlink is by boron hydride product
The outlet of discharge line is discharged；
In cathode side, reaction product and decomposition product are discharged branch by hydrogen peroxide product and enter hydrogen peroxide product
Discharge line, under the effect of cathode gas-liquid separation section, oxygen, which carries, is advanced into top and hydrogen peroxide product row on a small amount of moisture
The oxygen feeding pipe road of pipeline connection out, liquid product downlink are discharged by the outlet of hydrogen peroxide product discharge line；
Step S400: the reaction of battery secondary discharge:
Cathode side oxygen is evenly distributed into oxygen supply branch by oxygen feeding pipe road and is directly entered cathode electrode table
Face occurs reduction reaction and obtains the electronics from external circuit, and generation hydroxyl crosses exchange membrane and enters anode-side, product and unreacted
Oxygen flow through and be collected to the discharge of oxygen product discharge line apart from nearest oxygen product discharge branch；
Anode-side hydrogen is evenly distributed into hydrogen supply branch by hydrogen feed pipe road and is directly entered anode electricity simultaneously
Pole surface occurs oxidation reaction with the hydroxyl from cathode side and generates the products such as electronics and water, and electronics is led to by external circuit
Cathode side, product, which is flowed through, is collected to the discharge of hydrogen gas product discharge line apart from nearest hydrogen gas product discharge branch.
The present invention compared with the existing technology, has the following advantages that and effect:
Feed separation transmission fuel-efficient of the invention utilizes fuel cell and its working method, and anode is arranged in fuel cell
Raw material supply pipeline and branch, product are independently arranged in flow-field plate and cathode flow field plate, anode flow field board and cathode flow field plate
Discharge line and branch, and be provided as the hydrogen gas product discharge line that product secondary recovery utilizes, hydrogen feed pipe road and
Branch, oxygen product discharge line, oxygen supply branch, not only raw material and product separation conveying, but also by product oxygen and hydrogen
Gas is introduced into secondary use in electrode.
The longitudinally fed flow field of array by being evenly distributed on electrode surface keeps fuel and oxidant directly and uniform
Arrival electrode surface, avoid traditional flow field because the longer bring electrode surface fuel of process, oxidant concentration are unevenly distributed
Reaction efficiency caused by even is low, enables fuel and oxidant is more efficient converts electric energy for chemical energy.
Using fuel recovery flow field corresponding with fuel conveying flow field, guarantees that the fair current of fuel and product is transmitted, avoid
The blending of fuel or oxide and product further avoids gaseous product in the delay of inside battery, while ensure that electrode
The high concentration of negative fuel oxide improves reaction efficiency.
The gaseous product that battery is further directly reacted to generation the present invention is based on array longitudinally reciprocal flow field recycles
It utilizes, so that hydrogen product and anode fair current is entered battery and carry out secondary response, be based on uniform fair current flow Field Design fuel oxidizer
Multi-class propagation flow field improves fuel oxidizer utilization rate, plays the discharging efficiency of battery to greatest extent.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention
Fig. 2 is battery current collecting plate side view of the present invention
Fig. 3 is battery current collecting plate boron hydride product effluent of the present invention road/hydrogen peroxide product discharge duct and hydrogen
Supply line/oxygen supply line side view
Fig. 4 is battery boron hydride supply line/hydrogen peroxide supply line of the present invention and hydrogen gas product discharge duct/oxygen
Gas product effluent trackside view
In figure: 1- anode flow field board, 2- anode buffer chamber, 3- anode electrode, 4- exchange membrane, 5- cathode electrode, 6- cathode
Cushion chamber, 7- cathode flow field plate, the import of 8- boron hydride, 9- boron hydride feeding pipe, 10- boron hydride supply branch, 11-
Boron hydride product exit, 12- anode gas-liquid separation section, 13- boron hydride product discharge line, 14- boron hydride product row
Out branch, 15- anode electrode distance piece, 16- hydrogen gas product discharge line, 17- hydrogen gas product discharge branch, the supply of 18- hydrogen
Pipeline, 19- hydrogen supply branch, the outlet of 20- hydrogen gas product, 21- hydrogen peroxide inlet, 22- hydrogen peroxide feeding pipe, 23-
Hydrogen peroxide supplies branch, the outlet of 24- hydrogen peroxide product, the discharge of 25- cathode gas-liquid separation degree section, 26- hydrogen peroxide product
Pipeline, 27- hydrogen peroxide product discharge branch, 28- cathode electrode distance piece, 29- oxygen product discharge line, 30- oxygen produce
Branch, 31- oxygen feeding pipe road, 32- oxygen supply branch, the outlet of 33- oxygen product is discharged in object.
Specific embodiment
Present invention is further described in detail in the following with reference to the drawings and specific embodiments, but not as to limit of the invention
It is fixed.
Referring to Fig. 1-2, feed separation transmission fuel-efficient of the invention utilizes fuel cell, including is arranged in fuel cell
Anode flow field board 1, anode buffer chamber 2, anode electrode 3, exchange membrane 4, cathode electrode 5, cathode cushion chamber 6 and cathode on ontology
Flow-field plate 7.
Boron hydride feeding pipe 9, boron hydride product discharge pipe are independently provided in the anode flow field board 1
Road 13, hydrogen gas product discharge line 16 and hydrogen feed pipe road 18 offer boron hydride import 8, boron hydrogen on anode flow field board 1
Compound product exit 11 and hydrogen gas product outlet 20, boron hydride feeding pipe 9, boron hydride product discharge line 13 and hydrogen
16 one end of product discharge line is connected to boron hydride import 8, boron hydride product exit 11 and hydrogen gas product outlet 20 respectively,
Boron hydride feeding pipe 9, boron hydride product discharge line 13 and 16 other end of hydrogen gas product discharge line and hydrogen supply
Pipeline 18 is connected to anode buffer chamber 2.
11 position of boron hydride product exit is provided with anode gas in the boron hydride product discharge line 13
Liquid segregation section 12.
Independently be provided in cathode flow field plate 7 hydrogen peroxide feeding pipe 22, hydrogen peroxide product discharge line 26,
Oxygen product discharge line 29 and oxygen feeding pipe road 31 offer hydrogen peroxide inlet 21, hydrogen peroxide on cathode flow field plate 7
Product exit 24 and oxygen product outlet 33, hydrogen peroxide feeding pipe 22, hydrogen peroxide product discharge line 26 and oxygen produce
29 one end of object discharge line is connected to hydrogen peroxide inlet 21, hydrogen peroxide product outlet 24 and oxygen product outlet 33 respectively,
Hydrogen peroxide feeding pipe 22, hydrogen peroxide product discharge line 26,29 other end of oxygen product discharge line and oxygen supply
Pipeline 31 is connected to cathode cushion chamber 6.
24 positions, which are exported, close to hydrogen peroxide product in the hydrogen peroxide product discharge line 26 is provided with cathode gas
Liquid separating degree section 25.
Anode electrode 3 originally further includes the anode electrode distance piece 15 of setting on the anode electrode 3 except anode electrode in vitro；Yin
Pole electrode 5 originally further includes the cathode electrode distance piece 28 being arranged on cathode electrode 5 except cathode electrode in vitro.The anode electricity
Pole distance piece and cathode electrode distance piece are the metal or non-metal flat plate that can will be isolated above and below electrode, and electrode is divided into
Half section and lower semisection, capable of making fluid, lower section does not circulate mutually on the electrode.
As shown in figure 3, anode flow field board 1 include respectively with boron hydride feeding pipe 9, boron hydride product discharge line
13, the boron hydride that hydrogen gas product discharge line 16 is connected to hydrogen feed pipe road 18 supplies branch 10, boron hydride product row
Out branch 14, hydrogen gas product discharge branch 17, hydrogen supply branch 19.Boron hydride import 8, boron hydride feeding pipe 9, boron
Hydride supplies branch 10 and is connected to.Boron hydride product exit 11, boron hydride product discharge line 13, boron hydride product row
Out branch 14 is connected to, and hydrogen feed pipe road 18 is connected to hydrogen supply branch 19, hydrogen gas product discharge line 16, hydrogen gas product row
Out branch 17,20 connection of hydrogen gas product outlet；Meanwhile boron hydride product discharge line 13 is located at 1 lower semisection of anode flow field board,
Hydrogen feed pipe road 18 is located at 1 upper semisection of anode flow field board, and boron hydride product discharge line 13 and hydrogen feed pipe road 18 connect
It is logical.
As shown in figure 4, cathode flow field plate 7 include respectively with hydrogen peroxide feeding pipe 22, hydrogen peroxide product discharge pipe
The hydrogen peroxide that road 26, oxygen product discharge line 29 are connected to oxygen feeding pipe road 31 supplies branch 23, hydrogen peroxide product
Branch 27, oxygen product discharge branch 30, oxygen is discharged and supplies branch 32.Hydrogen peroxide inlet 21, hydrogen peroxide feeding pipe
22, hydrogen peroxide supply branch 23 is connected to, and hydrogen peroxide product exports 24, hydrogen peroxide product discharge line 26, hydrogen peroxide
Product is discharged branch 27 and is connected to, and oxygen feeding pipe road 31 is connected to oxygen supply branch 32, oxygen product discharge line 29, oxygen
Branch 30,33 connection of oxygen product outlet is discharged in product；Meanwhile hydrogen peroxide product discharge line 26 is located at cathode flow field plate 7
Lower semisection, oxygen feeding pipe road 31 are located at 7 upper semisection of cathode flow field plate, hydrogen peroxide product discharge line 26 and oxygen feeding pipe
Road 31 is connected to.
As shown in Fig. 2, anode buffer chamber 2 is the chamber portion of the anode current collector plate with pore size distribution, in anode current collector plate
Duct should supply branch 10, hydrogen peroxide product discharge branch 14, hydrogen gas product discharge branch 17 and hydrogen with hydrogen peroxide and produce
Object supplies branch 19 and is connected to；Cathode cushion chamber 6 is the chamber portion of the cathode collector plate with pore size distribution, cathode collector plate mesoporous
Road and hydrogen peroxide supply branch 23, hydrogen peroxide product discharge branch 27, oxygen product discharge branch 30, oxygen supply branch
32 connections, cathode collector plate and anode current collector plate material should be the conduction material of the metals such as the inorganic non-metallics such as graphite or stainless steel
Material.
Anode electrode 3 is divided into anode electrode upper semisection and anode electrode lower semisection by anode electrode distance piece 15, and hydrogen produces
Object discharge branch 17 and hydrogen supply branch 19 and anode current collector plate communicating position are located at anode electrode upper semisection, and boron hydride supplies
It is located at anode electrode lower semisection to branch 10 and boron hydride product discharge branch 14 and anode current collector plate communicating position.
Cathode electrode 5 is divided into cathode electrode upper semisection and cathode electrode lower semisection by cathode electrode distance piece 28, and oxygen produces
Object discharge branch 30, oxygen supply branch 32 and cathode collector plate communicating position be located at cathode electrode upper semisection and at equal intervals, friendship
Mistake arrangement, hydrogen peroxide supply branch 23, hydrogen peroxide product discharge branch 27 and cathode collector plate communicating position are located at cathode
Electrode lower semisection and at equal intervals, interlaced arrangement.
Wherein fuel should be the solution such as certain density boron hydride, including sodium borohydride, potassium borohydride in fuel cell,
Oxidant should be certain density hydrogenperoxide steam generator.Exchange membrane 4 is anion-exchange membrane or neutral exchange membrane.
Anode flow field board 1 and 7 material therefor of cathode flow field plate have mechanical strength required for fuel cell and for institute
With the corrosion resistance of fuel, the metallic composites such as inorganic non-metallic materials, stainless steel, poly-methyl methacrylate such as including graphite
The high-molecular organic materials such as ester.
Anode electrode 3 and cathode electrode 5 should be with the conductive metal material coated with corresponding catalyst with porous structure
Material or carbon material include supporting layer, Catalytic Layer and diffusion layer in structure.
The gas-liquid separating method of anode gas-liquid separation section 12 and cathode gas-liquid separation section 25 includes gravitational settling, baffling point
Analysis, centrifugal force separate, silk screen separation, ultra-filtration and separation and filler separation etc., according to the different anode gas-liquid separation sections of separation method
12 and cathode gas-liquid separation section 25 arranged in boron hydride product 13-hydrogen feed pipe of discharge line road 18 and hydrogen peroxide product
The position that 26-oxygen feeding pipe of pipeline road 31 is distributed out carries out motor-driven adjustment.
Feed separation transmit fuel-efficient utilize fuel cell, working method the following steps are included:
Step S100: fuel is evenly distributed into electrode: borohydride solution enters fuel electricity by boron hydride import 8
Pond anode-side is evenly distributed to boron hydride by boron hydride feeding pipe 9 under the action of pump work and supplies branch 10, into one
Step is directly entered in anode electrode 3；Meanwhile hydrogenperoxide steam generator enters fuel battery negative pole side by hydrogen peroxide inlet 21,
Hydrogen peroxide is evenly distributed to by hydrogen peroxide feeding pipe 22 under pump work effect and supplies branch 23, is further directly entered
In cathode electrode 5；
Step S200: battery discharge reaction: on 5 surface of cathode electrode reduction reaction, which occurs, for cathode side hydrogen peroxide to arrive
From the electronics of external circuit, hydroxyl is generated by exchange membrane 4 and enters anode-side, anode-side boron hydride is on 2 surface of anode electrode
Oxidation reaction occurs with the hydroxyl from cathode side, generates the products such as electronics and water, electronics leads to cathode side by external circuit,
The products such as hydrolysis generation hydrogen, cathode side peroxidating occur under field conditions (factors) for anode-side boron hydride in the battery simultaneously
Hydrogen, which decomposes to react, generates the products such as oxygen；
Step S300: primary product fair current outflow separation: in anode-side, boron hydride after the reaction was completed, reaction product
And hydrolysate exports nearest boron hydride product discharge branch 14 further apart from boron hydride supply branch 10 by flowing into
Into boron hydride product discharge line 13, in the case where gravity and anode gas-liquid separation section 12 act on, hydrogen is carried on a small amount of moisture
It is advanced into hydrogen feed pipe road 18, liquid product downlink is discharged by boron hydride product exit 11；In cathode side, reaction product
And decomposition product exports nearest hydrogen peroxide product discharge branch 27 apart from nearest hydrogen peroxide supply branch 23 by flowing into
Hydrogen peroxide product discharge line 26 is traveled further into, under the effect of cathode gas-liquid separation section 25, oxygen is carried on a small amount of moisture
It is advanced into oxygen feeding pipe road 31, liquid product downlink is by 24 discharge of hydrogen peroxide product outlet；
Step S400: the reaction of battery secondary discharge: cathode side oxygen is evenly distributed by oxygen feeding pipe road 31 into oxygen
Gas supply branch 32 is directly entered cathode electrode surface, and reduction reaction occurs and obtains the electronics from external circuit, generates hydroxyl
Exchange membrane 4 is crossed to flow through and be collected to apart from nearest oxygen product discharge branch 30 into anode-side, product and unreacted oxygen
Oxygen product discharge line 29 passes through 33 discharge of oxygen product outlet；Anode-side hydrogen is uniform by hydrogen feed pipe road 18 simultaneously
Distribution enters hydrogen supply branch 19 and is directly entered anode electrode surface, and it is raw that oxidation reaction occurs with the hydroxyl from cathode side
At products such as electronics and water, electronics leads to cathode side by external circuit, and product, which is flowed through, is discharged branch apart from nearest hydrogen gas product
17, which are collected to hydrogen gas product discharge line 16, passes through 20 discharge of hydrogen gas product outlet.
Compared with traditional technology, the present invention uses a kind of longitudinally fed flow field of array for being evenly distributed on electrode surface, makes
Fuel and oxidant can directly and uniformly reach electrode surface, avoid traditional flow field because of the longer bring electrode table of process
Face fuel, oxidant concentration be unevenly distributed caused by reaction efficiency it is low, enable fuel and oxidant is more efficient will be chemical
Electric energy can be converted into；The present invention guarantees fuel and product using a kind of fuel recovery flow field corresponding with fuel conveying flow field
Fair current transmission, avoid the blending of fuel or oxide and product, further avoid gaseous product in the delay of inside battery,
It ensure that the high concentration of Electrode Negative oxidized object simultaneously, improve reaction efficiency；The present invention is based on the longitudinally reciprocal flow fields of array
The gaseous product that battery is further directly reacted to generation is recycled, make hydrogen product and anode fair current enter battery into
Row secondary response plays the discharging efficiency of battery to greatest extent.
Finally it should be noted that: the above examples are only used to illustrate the technical scheme of the present invention rather than its limitations, to the greatest extent
Pipe is described the invention in detail referring to above-described embodiment, it should be understood by those ordinary skilled in the art that: still may be used
With modifications or equivalent substitutions are made to specific embodiments of the invention, and repaired without departing from any of spirit and scope of the invention
Change or equivalent replacement, should all cover in present claims range.
Claims (8)
1. feed separation transmits fuel-efficient and utilizes fuel cell, it is characterised in that: including being arranged on fuel cell main body
Anode flow field board (1), anode buffer chamber (2), anode electrode (3), exchange membrane (4), cathode electrode (5), cathode cushion chamber (6) and
Cathode flow field plate (7)；
Boron hydride feeding pipe (9), boron hydride product discharge pipe are independently provided in the anode flow field board (1)
Road (13), hydrogen gas product discharge line (16) and hydrogen feed pipe road (18), be additionally provided in anode flow field board (1) respectively with boron
Hydride feeding pipe (9), boron hydride product discharge line (13), hydrogen gas product discharge line (16) and hydrogen feed pipe road
(18) boron hydride supply branch (10), boron hydride product discharge branch (14), hydrogen gas product discharge branch (17) being connected to
Branch (19) are supplied with hydrogen, each branch way outlet is uniformly interspersed and is connected to respectively with anode buffer chamber (2)；
Hydrogen peroxide feeding pipe (22), hydrogen peroxide product discharge are independently provided in the cathode flow field plate (7)
Pipeline (26), oxygen product discharge line (29) and oxygen feeding pipe road (31), be additionally provided in cathode flow field plate (7) respectively with
Hydrogen peroxide feeding pipe (22), hydrogen peroxide product discharge line (26), oxygen product discharge line (29) and oxygen supply
Branch is discharged in hydrogen peroxide supply branch (23) of pipeline (31) connection, hydrogen peroxide product discharge branch (27), oxygen product
(30), oxygen supply branch (32), each branch way outlet are uniformly interspersed and are connected to respectively with cathode cushion chamber (6)；
Be provided with anode electrode distance piece (15) in the anode electrode (3), be provided in cathode electrode (5) cathode electrode every
From section (28), electrode is isolated up and down and is divided into upper semisection under by anode electrode distance piece (15) and cathode electrode distance piece (28)
Half section, making fluid, lower semisection does not circulate mutually on the electrode；
Hydrogen gas product discharge branch (17) and hydrogen supply branch (19) and anode buffer chamber (2) communicating position are located at anode electrode
Upper semisection, boron hydride supply branch (10) and boron hydride product discharge branch (14) and anode buffer chamber (2) communicating position
Positioned at anode electrode lower semisection；Meanwhile boron hydride product discharge line (13) is located at anode flow field board (1) lower semisection, hydrogen
Feeding pipe (18) is located at anode flow field board (1) upper semisection, boron hydride product discharge line (13) and hydrogen feed pipe road
(18) it is connected to, outlet port is provided with anode gas-liquid separation section (12) in boron hydride product discharge line (13)；
Oxygen product discharge branch (30), oxygen supply branch (32) and cathode cushion chamber (6) communicating position is located at yin
Pole electrode upper semisection, hydrogen peroxide supply branch (23), hydrogen peroxide product discharge branch (27) are connected to cathode cushion chamber (6)
Position is located at cathode electrode lower semisection；The hydrogen peroxide product discharge line (26) is located at cathode flow field plate (7) lower semisection,
Oxygen feeding pipe road (31) is located at cathode flow field plate (7) upper semisection, hydrogen peroxide product discharge line (26) and oxygen feeding pipe
Road (31) is connected to, and outlet port is provided with cathode gas-liquid separation degree section (25) in hydrogen peroxide product discharge line (26).
2. fuel cell according to claim 1, it is characterised in that: the anode buffer chamber (2) is with pore size distribution
Anode current collector plate chamber portion, duct and hydrogen peroxide in anode current collector plate supply branch (10), hydrogen peroxide product
Discharge branch (14), hydrogen gas product discharge branch (17) are connected to hydrogen gas product supply branch (19)；Cathode cushion chamber (6) is tool
There is the chamber portion of the cathode collector plate of pore size distribution, the duct in cathode collector plate and hydrogen peroxide supply branch (23), peroxide
Change hydrogen product discharge branch (27), oxygen product discharge branch (30), oxygen supply branch (32) connection.
3. fuel cell according to claim 1 or 2, it is characterised in that: the cathode collector plate and anode current collector plate
Using the conductive material of inorganic non-metallic or metal at.
4. fuel cell according to claim 1 or 2, it is characterised in that: the exchange membrane (4) is anion-exchange membrane
Or neutral exchange membrane.
5. fuel cell according to claim 1 or 2, it is characterised in that: the anode electrode (3) and cathode electrode
(5) to have the conductive metallic material or carbon material of porous structure coated with corresponding catalyst, structure includes supporting layer, Catalytic Layer
And diffusion layer.
6. fuel cell according to claim 1 or 2, it is characterised in that: the anode electrode distance piece (15) and yin
Pole electrode isolation section (28) is metal or non-metal flat plate.
7. fuel cell according to claim 1 or 2, it is characterised in that: setting is opened at the top of the anode flow field board (1)
If the hydrogen gas product outlet (20), the bottom that are connected to hydrogen gas product discharge line (16) open up and boron hydride feeding pipe (9)
The boron hydride import (8) of connection and the boron hydride product exit (11) being connected to boron hydride product discharge line (13)；
Opened up at the top of the cathode flow field plate (7) oxygen product be connected to oxygen product discharge line (29) export (33),
Bottom open up the hydrogen peroxide inlet (21) being connected to hydrogen peroxide feeding pipe (22) and with hydrogen peroxide product discharge line
(26) hydrogen peroxide product being connected to exports (24).
8. a kind of working method of fuel cell described in claim 1, it is characterised in that the following steps are included:
Step S100: fuel is evenly distributed into electrode:
Borohydride solution is evenly distributed to boron hydride confession by passing through boron hydride feeding pipe (9) under the action of pump work
Branch (10) are given, are further directly entered in anode electrode (3)；Meanwhile hydrogenperoxide steam generator passes through peroxide under pump work effect
Change hydrogen feeding pipe (22) and be evenly distributed to hydrogen peroxide supply branch (23), is further directly entered in cathode electrode (5)；
Step S200: battery discharge reaction:
Cathode side hydrogen peroxide occurs reduction reaction on cathode electrode (5) surface and obtains the electronics from external circuit, generates hydrogen-oxygen
Root enters anode-side by exchange membrane (4), and anode-side boron hydride is on anode electrode (2) surface and from the hydroxyl of cathode side
Oxidation reaction occurs, generates the products such as electronics and water, electronics leads to cathode side by external circuit, while anode-side boron in the battery
Hydrolysis occurs under field conditions (factors) and generates the products such as hydrogen for hydride, and cathode side hydrogen peroxide, which decomposes to react, generates oxygen
The products such as gas；
Step S300: primary product fair current outflow separation:
In anode-side, after the reaction was completed, reaction product and hydrolysate pass through boron hydride product discharge branch to boron hydride
(14) enter boron hydride product discharge line (13), under gravity and anode gas-liquid separation section (12) effect, hydrogen carries few
It measures and is advanced into the hydrogen feed pipe road (18) that top is connected to boron hydride product discharge line (13) on moisture, under liquid product
Row is discharged by the outlet of boron hydride product discharge line (13)；
In cathode side, reaction product and decomposition product are discharged branch (27) by hydrogen peroxide product and enter hydrogen peroxide product
Discharge line (26), under cathode gas-liquid separation section (25) effect, oxygen, which carries, is advanced into top and peroxidating on a small amount of moisture
The oxygen feeding pipe road (31) of hydrogen product discharge line (26) connection, liquid product downlink is by hydrogen peroxide product discharge line
(26) outlet discharge；
Step S400: the reaction of battery secondary discharge:
Cathode side oxygen is evenly distributed into oxygen supply branch (32) by oxygen feeding pipe road (31) and is directly entered cathode electricity
Pole surface occurs reduction reaction and obtains the electronics from external circuit, generates hydroxyl and crosses exchange membrane (4) into anode-side, product
And unreacted oxygen flows through and is collected to oxygen product discharge line (29) row apart from nearest oxygen product discharge branch (30)
Out；
Anode-side hydrogen is evenly distributed into hydrogen supply branch (19) by hydrogen feed pipe road (18) and is directly entered sun simultaneously
Pole electrode surface occurs oxidation reaction with the hydroxyl from cathode side and generates the products such as electronics and water, and electronics passes through external circuit
Lead to cathode side, product, which is flowed through, is collected to hydrogen gas product discharge line (16) row apart from nearest hydrogen gas product discharge branch (17)
Out.
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| US8574779B2 (en) * | 2006-06-16 | 2013-11-05 | Samsung Sdi Co., Ltd. | Mixed reactant fuel cell system |
| CN100998943A (en) * | 2006-12-19 | 2007-07-18 | 浙江工业大学 | Catalyst of hydrolytic perparing hydrogen by boron hydride and its preparation method |
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