CN207883818U - Ion permeability test device and all-vanadium redox flow battery system - Google Patents
Ion permeability test device and all-vanadium redox flow battery system Download PDFInfo
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- CN207883818U CN207883818U CN201820152479.4U CN201820152479U CN207883818U CN 207883818 U CN207883818 U CN 207883818U CN 201820152479 U CN201820152479 U CN 201820152479U CN 207883818 U CN207883818 U CN 207883818U
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- naoh
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- solution tank
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
Abstract
The utility model is related to flow battery fields, in particular to a kind of ion permeability test device and all-vanadium redox flow battery system.The device includes the first cavity, the second cavity, the first NaOH solution tank NaOH, first circulation pump, the second NaOH solution tank NaOH, second circulation pump and permeable membrane.Ion in first NaOH solution tank NaOH and the second NaOH solution tank NaOH can pass through permeable membrane, the first cavity or the second cavity be entered, to measure the permeability of effects of ion to be measured.The test device is applied to all-vanadium redox flow battery system, battery capacity attenuation problem can be made to be eased, and improves electrolyte utilization rate.The utility model is simple and easy to operate, can substantially reduce vanadium cell later maintenance cost.
Description
Technical field
The utility model is related to flow battery fields, in particular to a kind of ion permeability test device and entirely
Vanadium flow battery system.
Background technology
Without solid-state reaction the change of electrode substance structural form does not occur for all-vanadium flow battery, and at low cost, long lifespan, can
It is high by property, operation and maintenance costs is low, be suitable for and the mating progress regenerative resource storages of regenerative resources such as wind energy, solar energy
Can, meet outlying district distributed power supply and solves the problems, such as peak load regulation network.
Existing all-vanadium flow battery, in practical longtime running, vanadium cell capacity inevitably has decaying.
The method for solving vanadium cell capacity fade problem at present is mixed liquid after certain cycle, adjusts liquid.It may be needed when adjusting liquid
New reductant-oxidant is added, this just inevitably increases maintenance cost.
And battery capacity decaying is slower, and the period needed to be serviced is longer, reliability higher.Slow down all-vanadium flow electricity
Tankage decaying is the key that further to improve all-vanadium flow battery.
Utility model content
The purpose of this utility model is to provide a kind of ion permeability test devices, can test in vanadium cell positive and negative anodes
Vanadium ion seepage velocity.
The purpose of this utility model is to provide a kind of all-vanadium redox flow battery systems, solve vanadium cell capacity in the prior art
Attenuation problem.
To achieve the goals above, the technical solution that the utility model embodiment uses is as follows：
A kind of ion permeability test device, including：
First cavity and the second cavity；It is provided with permeable membrane between second cavity and the first cavity；
The first NaOH solution tank NaOH for holding prepare liquid, the inlet of the first NaOH solution tank NaOH are connected to the liquid outlet of the first cavity；
First circulation pumps, and the inlet of first circulation pump is communicated in the liquid outlet of the first NaOH solution tank NaOH, and first circulation pump goes out
Liquid mouth is communicated in the inlet of the first cavity；
The second NaOH solution tank NaOH for holding blank solution；The inlet of second NaOH solution tank NaOH is connected to the liquid outlet of the second cavity；
Second circulation pumps；The inlet of second circulation pump is communicated in the liquid outlet of the second NaOH solution tank NaOH, and second circulation pump goes out
Liquid mouth is communicated in the inlet of the second cavity.
In the utility model preferred embodiment,
First NaOH solution tank NaOH, the second NaOH solution tank NaOH, first circulation pump and second circulation pump are by piping connection in the first chamber
Body and the second cavity.
In the utility model preferred embodiment,
Ion permeability test device further includes first flowmeter；First flowmeter is arranged in the first cavity and the first solution
Between tank.
In the utility model preferred embodiment,
Ion permeability test device further includes second flowmeter；Second flowmeter is arranged in the second cavity and the second solution
Between tank.
In the utility model preferred embodiment,
Ion permeability test device further includes the first temperature control equipment；The setting of first temperature control equipment is followed first
Ring pumps between the first cavity.
In the utility model preferred embodiment,
Ion permeability test device further includes second temperature control device；The setting of second temperature control device is followed second
Ring pumps between the second cavity.
In the utility model preferred embodiment,
It is both provided with sealant between first cavity, the second cavity and permeable membrane.
In the utility model preferred embodiment,
Position of the position of the liquid outlet of first cavity higher than the inlet of the first cavity；
Position of the position of the liquid outlet of second cavity higher than the inlet of the second cavity.
A kind of all-vanadium redox flow battery system includes the device of above-mentioned test ion permeability in film.
The utility model has the beneficial effects that：
A kind of ion permeability test device provided by the utility model, including：First cavity and the second cavity；Second chamber
It is provided with permeable membrane between body and the first cavity；The inlet of the first NaOH solution tank NaOH for holding prepare liquid, the first NaOH solution tank NaOH connects
It is connected to the liquid outlet of the first cavity；First circulation pumps, and the inlet of first circulation pump is communicated in the liquid outlet of the first NaOH solution tank NaOH, follows
The liquid outlet of ring pump is communicated in the inlet of the first cavity；The second NaOH solution tank NaOH for holding blank solution；Second NaOH solution tank NaOH into
Liquid mouth is connected to the liquid outlet of the second cavity；Second circulation pumps；The inlet of second circulation pump is communicated in going out for the second NaOH solution tank NaOH
The liquid outlet of liquid mouth, second circulation pump is communicated in the inlet of the second cavity.By this device, can test in prepare liquid
Infiltration rate of the ion in permeable membrane, applies it in vanadium cell, can test in vanadium cell that vanadium ion oozes in positive and negative anodes
Saturating speed, to be to help subsequently to improve capacity fade problem in vanadium cell.
All-vanadium redox flow battery system provided by the utility model includes the dress of above-mentioned test ion permeability in film
It sets.The all-vanadium redox flow battery electrolyte prepared using the system, can make battery capacity attenuation problem be eased, and improve electricity
Solve liquid utilization rate.The utility model is simple and easy to operate, can substantially reduce vanadium cell later maintenance cost.
Description of the drawings
It, below will be to required use in embodiment in order to illustrate more clearly of the technical solution of the utility model embodiment
Attached drawing be briefly described, it should be understood that the following drawings illustrates only some embodiments of the utility model, therefore should not be by
Regard the restriction to range as, for those of ordinary skill in the art, without creative efforts, may be used also
To obtain other relevant attached drawings according to these attached drawings.
Fig. 1 is the structural schematic diagram for the ion permeability test device that the utility model embodiment provides；
Fig. 2 is that first flowmeter and second are not arranged for the ion permeability test device that the utility model embodiment provides
Structural schematic diagram when gauge；
Fig. 3 be the ion permeability test device that provides of the utility model embodiment be not arranged the first temperature control equipment and
Structural schematic diagram when second temperature control device.
Icon：100- ion permeability test devices；The first cavitys of 110-；The second cavitys of 120-；130- permeable membranes；131-
Sealant；The first NaOH solution tank NaOHs of 140-；150- first circulations pump；The second NaOH solution tank NaOHs of 160-；170- second circulations pump；180- is first-class
Gauge；181- second flowmeters；The first temperature control equipments of 190-；191- second temperature control devices.
Specific implementation mode
It is new below in conjunction with this practicality to keep the purpose, technical scheme and advantage of the utility model embodiment clearer
Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched
The embodiment stated is the utility model a part of the embodiment, instead of all the embodiments.Usually here described in attached drawing and
The component of the utility model embodiment shown can be arranged and be designed with a variety of different configurations.
Therefore, the detailed description of the embodiments of the present invention to providing in the accompanying drawings is not intended to limit requirement below
The scope of the utility model of protection, but it is merely representative of the selected embodiment of the utility model.Based in the utility model
Embodiment, the every other embodiment that those of ordinary skill in the art are obtained without creative efforts, all
Belong to the range of the utility model protection.
It should be noted that：Similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined, then it further need not be defined and explained in subsequent attached drawing in a attached drawing.
In the description of the utility model embodiment, it should be noted that the orientation or position of the instructions such as term "upper", "inner"
Set relationship be based on the orientation or positional relationship shown in the drawings or the utility model product using when the orientation usually put
Or position relationship, be merely for convenience of describing the present invention and simplifying the description, do not indicate or imply the indicated device or
Element must have a particular orientation, with specific azimuth configuration and operation, therefore should not be understood as the limit to the utility model
System.
In the description of the present invention, it should also be noted that, unless otherwise clearly defined and limited, term " is set
Set ", " installation ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection,
Or it is integrally connected；It can be directly connected, can also can be indirectly connected through an intermediary the company inside two elements
It is logical.For the ordinary skill in the art, above-mentioned term in the present invention specific can be understood with concrete condition
Meaning.
Have below to the ion permeability test device and all-vanadium redox flow battery system of the utility model embodiment
Body explanation.
A kind of ion permeability test device that the utility model embodiment provides.
Fig. 1-Fig. 3 is please referred to, the present embodiment provides a kind of ion permeability test devices 100 comprising the first cavity
110, the second cavity 120, permeable membrane 130, the first NaOH solution tank NaOH 140, first circulation the 150, second NaOH solution tank NaOH 160 of pump and second follow
Ring pump 170.
Further, the first NaOH solution tank NaOH 140, the second NaOH solution tank NaOH 160, first circulation pump 150 and second circulation pump 170 are equal
By piping connection in the first cavity 110 and the second cavity 120.
Further, prepare liquid is held in the first NaOH solution tank NaOH 140.The inlet of first NaOH solution tank NaOH 140 is connected to first
The liquid outlet of cavity 110；The inlet of first circulation pump 150 is communicated in the liquid outlet of the first NaOH solution tank NaOH 140, first circulation pump
150 liquid outlet is communicated in the inlet of the first cavity 110.
Further, blank solution is held in the second NaOH solution tank NaOH 160.The inlet of second NaOH solution tank NaOH 160 is connected to second
The liquid outlet of cavity 120；The inlet of second circulation pump 170 is communicated in the liquid outlet of the second NaOH solution tank NaOH 160, second circulation pump
170 liquid outlet is communicated in the inlet of the second cavity 120.
Further, by pipeline by the first above-mentioned NaOH solution tank NaOH 140, the second NaOH solution tank NaOH 160, first circulation pump 150, the
Two circulating pumps 170, the first cavity 110 and the second cavity 120 are connected as an entirety.
It should be understood that the pipe that can be adapted for above-mentioned all kinds of prepare liquid circulations that above-mentioned pipeline can select this field common
Road.Optionally, the pipeline of corrosion-resistant material is selected.
Further, when starting first circulation pump 150, the prepare liquid in the first NaOH solution tank NaOH 140 pumps 150 in first circulation
Under the action of, it is transported in the first cavity 110, by after the first cavity 110, the first NaOH solution tank NaOH is returned by Pipeline transport
140.In the process, when prepare liquid reaches the first cavity 110, due to being arranged between the first cavity 110 and the second cavity 120
There is permeable membrane 130, therefore the ion in prepare liquid can be entered across permeable membrane 130 in the second cavity 120.
Further, when starting second circulation pump 170, the blank solution in the second NaOH solution tank NaOH 160 pumps 170 in second circulation
Under the action of, it is transported in the second cavity 120, by after the second cavity 120, the second NaOH solution tank NaOH is returned by Pipeline transport
160.At this point, the ion being permeated from the first cavity 110 will be accommodated in blank solution.
Further, sealant 131, above-mentioned permeable membrane are provided between above-mentioned permeable membrane 130 and the first cavity 110
130 and second are also equipped with sealant 131 between cavity 120.
It can prevent solvent from being permeated between the first cavity 110 and the second cavity 120 by the way that sealant 131 is arranged, to
It can ensure that only solute ions are permeated by permeable membrane 130, and then can ensure the permeability of the ion of test
Accuracy.
It should be understood that the material that the material of above-mentioned permeable membrane 130 can select this field common.Optionally, Nafion every
Film.
Further, the material that the material of above-mentioned sealant 131 can also select this field common.Optionally, high score
Sub- material.
Further, the specific shape of the first above-mentioned cavity 110 and the second cavity 120 does not limit.Optionally,
The shape of above-mentioned the first cavity 110 and the second cavity 120 selects rectangular shape.In other alternative-embodiments, above-mentioned
The first cavity 110 and the shape of the second cavity 120 can select cylindrical shape or other irregular shapes.
Further, which further includes first flowmeter 180；First flowmeter 180 is arranged
Between the first cavity 110 and the first NaOH solution tank NaOH 140.
Further, ion permeability test device 100 further includes second flowmeter 181；The setting of second flowmeter 181 exists
Between second cavity 120 and the second NaOH solution tank NaOH 160.
By the way that first flowmeter 180 and second flowmeter 181 is arranged, the flow in pipeline can be accurately monitored so that
The detection of entire ion permeability test device 100 is relatively reliable.
Further, ion permeability test device 100 further includes the first temperature control equipment 190；First temperature controls
The setting of device 190 is between first circulation pump 150 and the first cavity 110；
Further, ion permeability test device 100 further includes second temperature control device 191；Second temperature controls
The setting of device 191 is between second circulation pump 170 and the second cavity 120.
By the way that the first temperature control equipment 190 and second temperature control device 191 is arranged, can accurately monitor in pipeline
Temperature so that the temperature-controllable of entire ion permeability test device 100, and then ensure that the safety of test.
Further, position of the position of the liquid outlet of the first cavity 110 higher than the inlet of the first cavity 110；Second
Position of the position of the liquid outlet of cavity 120 higher than the inlet of the second cavity 120.
Pass through the position by the position setting of the liquid outlet of the first above-mentioned cavity 110 higher than the inlet of the first cavity 110
It sets；The position setting of the liquid outlet of second cavity 120 can extend solution and exist higher than the position of the inlet of the second cavity 120
Time in first cavity 110 and the second cavity 120 is further conducive to test permeability.
In other alternative-embodiments, the liquid outlet of the first above-mentioned cavity 110, inlet and the second cavity 120
Liquid outlet, inlet position can be alternatively provided at other positions.
Some embodiments of the utility model also provide a kind of all-vanadium redox flow battery system.The system include it is above-mentioned from
Sub- permeability test device and pile.
Utility model people has found that vanadium cell capacity inevitably has decaying in actually studying for a long period of time, the reason is that
Permeability difference of all kinds of ions under not same electric field, flow field, temperature condition in diaphragm causes in electrolyte.
When vanadium ion permeability is inconsistent in positive and negative anodes, vanadium ion can be caused unidirectional tired in positive/negative electrolyte
Product, to make battery capacity reduce.
All-vanadium redox flow battery system provided in this embodiment, uses in this way：
It is oozed using each valence state vanadium ion dynamic in the ion permeability test device test all-vanadium flow battery of aforementioned offer
Saturating speed；
Control positive and negative anodes vanadium ion concentration ratio and the positive and negative anodes vanadium in all-vanadium redox flow battery system in all-vanadium flow battery
The dynamic seepage velocity ratio of ion is inversely proportional；
The product for controlling positive vanadium ion concentration ratio and anode volume in all-vanadium flow battery is equal in all-vanadium flow battery
The product of cathode vanadium ion concentration ratio and negative electrode volume.
In the present embodiment, all-vanadium flow battery includes the first electrolyte and the second electrolyte；First electrolyte and second
Diaphragm is provided between electrolyte；The permeability of diaphragm is measured by ion permeability test device；First electrolyte include two,
Three, four, pentavalent vanadium ion；Second electrolyte includes sulfuric acid solution.
Further, control two, trivalent vanadium ion seepage velocity and four, pentavalent vanadium ion seepage velocity ratio are in 0.8-
In 1.2 ranges.
Further, trivalent vanadium ion concentration is controlled：The total vanadium ion dynamic of tetravalent vanadium ion concentration=anode electrolyte is oozed
Saturating speed：The total vanadium ion dynamic seepage velocity of electrolyte liquid.
Further, anode volume is calculated according to positive concentration；Negative electrode volume is calculated according to cathode concentration
It arrives.
Specifically, corresponding certain single battery/pile, tests its each valence state vanadium ion dynamic seepage velocity.Battery list
First diaphragm both sides side is a certain concentration CiCertain volume ViTwo, three, four, pentavalent vanadium ion electrolyte, the other side be certain body
Product VjIdentical acidity sulfuric acid solution, not charge and discharge open circulating pump and obtain by being tested after battery operation 24 hours, 24 hours
Sulfuric acid solution surveys total vanadium ion concentration Cp.Dynamic Permeability ρ=Cp·Vj/Ci/Vi, dynamic seepage velocity δi=Cp·Vj/ A/T,
Middle A is effective membrane area, and T is run time.Different diaphragm, different flow velocitys, different pile assemble compressibles than, it is different
Environment temperature can all make a difference to vanadium ion seepage velocity.
Flow velocity is adjusted in a certain range, if two, trivalent vanadium ion seepage velocity is permeated with more than four, pentavalent vanadium ion
Speed is too bigger than value difference, suitably tunes up the flow velocity of pole electrolyte end pump, is allowed to control within the scope of 0.8-1.2.
Vanadium ion dynamic seepage velocity is obtained again, calculates the total vanadium ion dynamic seepage velocity ratio of positive and negative anodes electrolyte
δ45/δ23。
Required configuration trivalent vanadium ion concentration C3：Tetravalent vanadium ion concentration C4The total vanadium ion dynamic of=positive and negative anodes electrolyte is oozed
Saturating speed ratio δ45/δ23。
Three, tetravalent vanadium ion volume is calculated according to three, tetravalent vanadium ion concentration so that C3V3=C4V4。
Using all-vanadium redox flow battery system provided in this embodiment prepare all-vanadium flow battery positive and negative anodes electrolyte due to
Relative equilibrium is obtained in the infiltration of vanadium ion so that single ion cumulative effect substantially reduces, and slows down declining for vanadium cell capacity
Subtract.This method is easy to be reliable, does not increase material cost, effectively reduces later maintenance cost.
The feature of the utility model and performance are described in further detail with reference to embodiments：
Embodiment 1
A set of 5Wh vanadium cells stack system is assembled, which includes pile, electrolyte, the circulatory system, charge and discharge control system
System.Wherein pile is a 40cm2Effective area monomer pile, including positive and negative anodes fine copper conductive plate, collector plate, carbon felt,
Nafion115 diaphragms；Electrolyte includes tri- tetravalence vanadium+3.5M sulfuric acid mixed electrolytic solution electrolyte of 1.5M；The pure trivalent vanadiums of 1.4M+
3.5M sulfuric acid electrolyte；The pure tetravalence vanadium+3.5M sulfuric acid electrolytes of 1.5M；The circulatory system includes pipeline, 6W magnetic drive pump power sources, electricity
Solve liquid holding vessel；Charge-discharge control system includes charge-discharge test instrument.
With 80mA/cm2Current density charge and discharge control is carried out to positive and negative each 200ml electrolyte, surveyed with autotitrator
Vanadium ion concentration is tried, V is made respectively2+, V3+, V4+, V5+Electrolyte.
Vanadium ion electrolyte is placed in one end, and the other end places 3.5M sulfuric acid solutions, starts circulating pump, measures respectively 24 hours
V2+, V3+, V4+, V5+The infiltration rate of ion is 0.425mol/cm2/ day, 0.234mol/cm2/ day, 0.291mol/cm2/
Day, 0.249mol/cm2/day.It is 0.82 to calculate positive and negative anodes electrolyte permeability speed ratio.
According to electrolyte liquid seepage velocity than 0.82 times, prepare 1.3M trivalent vanadium solution 60ml, 1.6M tetravalence vanadium solutions
40ml, with 80mA/cm2Current density carry out charge and discharge, obtain coulombic efficiency 96.3%, voltage efficiency 86.2% can dose-effect
Rate 83.0%, 100 Capacity fadings are only 5%.Compared to 1.5M trivalent V electrolyte 50ml+1.5M tetravalence V electrolytes 50ml
System, 100 Capacity fadings 13%, capacity attenuation is alleviated significantly.
Embodiment 2
A set of 2Wh vanadium cells stack system is assembled, which includes pile, electrolyte, the circulatory system, charge and discharge control system
System.Wherein pile is a 4cm2Effective area monomer pile, including positive and negative anodes fine copper conductive plate, collector plate, carbon felt,
Nafion117 diaphragms；Electrolyte includes the pure trivalent vanadium+4M sulfuric acid electrolytes of 1.5M；The pure tetravalence vanadium+4M sulfuric acid electrolytes of 1.5M；
The circulatory system includes pipeline, 6W magnetic drive pump power sources, anolyte storage tank；Charge-discharge control system includes charge-discharge test instrument.
With 80mA/cm2Current density charge and discharge control is carried out to positive and negative each 40ml electrolyte, tested with autotitrator
V is made in vanadium ion concentration respectively2+, V3+, V4+, V5+Electrolyte.
Vanadium ion electrolyte is placed in one end, and the other end places 4M sulfuric acid solutions, starts circulating pump, measures 24 hours V respectively2 +, V3+, V4+, V5+The infiltration rate of ion is 0.31mol/cm2/ day, 0.21mol/cm2/ day, 0.27mol/cm2/ day,
0.26mol/cm2/day.It is 1.02 to calculate positive and negative anodes electrolyte permeability speed ratio.
According to electrolyte liquid seepage velocity than 1.02 times, it is known that positive and negative anodes electrolyte seepage velocity in this battery unit
Substantial equilibrium can be used directly 1.5M trivalent vanadium solution 40ml, 1.5M tetravalence vanadium solutions 40ml and make electrolyte.With 80mA/cm2's
Current density carries out charge and discharge, obtains coulombic efficiency 96.7%, voltage efficiency 88.2%, energy efficiency 85.2%, 100 cycle appearances
Amount decaying is only 2.8%.
Embodiment 3
A set of 10Wh vanadium cells stack system is assembled, which includes pile, electrolyte, the circulatory system, charge and discharge control
System.Wherein pile is a 80cm2Effective area monomer pile, including positive and negative anodes fine copper conductive plate, collector plate, carbon felt, self-control
Diaphragm；Electrolyte includes tri- tetravalence vanadium+3.5M sulfuric acid mixed electrolytic solutions of 1.5M；Pure trivalent vanadium+3.5M the sulfuric acid electrolytes of 1.4M；
The pure tetravalence vanadium+3.5M sulfuric acid electrolytes of 1.5M；The circulatory system includes pipeline, 10W variable-frequency control pumps, anolyte storage tank；Charge and discharge
Electric control system includes charge-discharge test instrument.
With 80mA/cm2Current density charge and discharge control is carried out to positive and negative each 200ml electrolyte, surveyed with autotitrator
Vanadium ion concentration is tried, V is made respectively2+, V3+, V4+, V5+Electrolyte.
Vanadium ion electrolyte is placed in one end, and the other end places 3.5M sulfuric acid solutions, starts circulating pump, measures respectively 24 hours
V2+, V3+, V4+, V5+The infiltration rate of ion is 0.483mol/cm2/ day, 0.305mol/cm2/ day, 0.237mol/cm2/
Day, 0.299mol/cm2/day.It is 0.68 to calculate positive and negative anodes electrolyte permeability speed ratio.Since ratio 0.68 is less than 0.8, fit
When the flow velocity for improving positive pump, (can suitably reduce the flow velocity of negative pole end pump in the case that not influencing diffusion velocity also).Again
24 hours V under conditions of obtaining newly2+, V3+, V4+, V5+The infiltration rate of ion is 0.483mol/cm2/ day, 0.305mol/
cm2/ day, 0.313mol/cm2/ day, 0.388mol/cm2/day.It is 0.89 to calculate positive and negative anodes electrolyte permeability speed ratio.It is accurate
Standby 1.4M trivalent vanadium solution 103ml, 1.6M tetravalence vanadium solution 90ml, with 80mA/cm2Current density carry out charge and discharge, obtain
Coulombic efficiency 95.8%, voltage efficiency 86.1%, energy efficiency 82.5%, 100 Capacity fadings are only 4.3%.It compares
1.5M trivalent V electrolyte 100ml+1.5M tetravalence V electrolyte 100ml systems, 100 Capacity fadings 11.2%, capacity declines
Subtract and is effectively relieved.
The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the utility model, for this
For the technical staff in field, various modifications and changes may be made to the present invention.It is all in the spirit and principles of the utility model
Within, any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.It should be noted that
It arrives：Similar label and letter indicate similar terms in following attached drawing, therefore, once determined in a certain Xiang Yi attached drawing
Justice further need not then be defined and explained to it in subsequent attached drawing.
Claims (10)
1. a kind of ion permeability test device, which is characterized in that including：
First cavity and the second cavity；It is provided with permeable membrane between second cavity and first cavity；
The first NaOH solution tank NaOH for holding prepare liquid, what the inlet of first NaOH solution tank NaOH was connected to first cavity goes out liquid
Mouthful；
First circulation pumps, and the inlet of the first circulation pump is communicated in the liquid outlet of first NaOH solution tank NaOH, and described first follows
The liquid outlet of ring pump is communicated in the inlet of first cavity；
The second NaOH solution tank NaOH for holding blank solution；What the inlet of second NaOH solution tank NaOH was connected to second cavity goes out liquid
Mouthful；
Second circulation pumps；The inlet of the second circulation pump is communicated in the liquid outlet of second NaOH solution tank NaOH, and described second follows
The liquid outlet of ring pump is communicated in the inlet of second cavity.
2. ion permeability test device as described in claim 1, which is characterized in that
First NaOH solution tank NaOH, second NaOH solution tank NaOH, first circulation pump and second circulation pump pass through pipeline
It is connected to first cavity and second cavity.
3. ion permeability test device as claimed in claim 2, which is characterized in that
The ion permeability test device further includes first flowmeter；First flowmeter setting in first cavity and
Between first NaOH solution tank NaOH.
4. ion permeability test device as claimed in claim 3, which is characterized in that
The ion permeability test device further includes second flowmeter；Second flowmeter setting in second cavity and
Between second NaOH solution tank NaOH.
5. ion permeability test device according to any one of claims 1-4, which is characterized in that
The ion permeability test device further includes the first temperature control equipment；First temperature control equipment is arranged in institute
It states between first circulation pump and first cavity.
6. ion permeability test device as claimed in claim 5, which is characterized in that
The ion permeability test device further includes second temperature control device；The second temperature control device is arranged in institute
It states between second circulation pump and second cavity.
7. ion permeability test device as claimed in claim 6, which is characterized in that
It is both provided with sealant between first cavity, second cavity and the permeable membrane.
8. ion permeability test device as claimed in claim 7, which is characterized in that
Position of the position of the liquid outlet of first cavity higher than the inlet of first cavity；
Position of the position of the liquid outlet of second cavity higher than the inlet of second cavity.
9. ion permeability test device as claimed in claim 8, which is characterized in that
Position of the position of the liquid outlet of second NaOH solution tank NaOH higher than the inlet of second NaOH solution tank NaOH.
10. a kind of all-vanadium redox flow battery system, which is characterized in that permeated including such as claim 1-9 any one of them ion
Rate test device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820152479.4U CN207883818U (en) | 2018-01-30 | 2018-01-30 | Ion permeability test device and all-vanadium redox flow battery system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820152479.4U CN207883818U (en) | 2018-01-30 | 2018-01-30 | Ion permeability test device and all-vanadium redox flow battery system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207883818U true CN207883818U (en) | 2018-09-18 |
Family
ID=63509046
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820152479.4U Expired - Fee Related CN207883818U (en) | 2018-01-30 | 2018-01-30 | Ion permeability test device and all-vanadium redox flow battery system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207883818U (en) |
-
2018
- 2018-01-30 CN CN201820152479.4U patent/CN207883818U/en not_active Expired - Fee Related
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