CN108134107A - A kind of perforated membrane is in the application of Alkaline Zinc iron liquid galvanic battery - Google Patents
A kind of perforated membrane is in the application of Alkaline Zinc iron liquid galvanic battery Download PDFInfo
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- CN108134107A CN108134107A CN201611088069.XA CN201611088069A CN108134107A CN 108134107 A CN108134107 A CN 108134107A CN 201611088069 A CN201611088069 A CN 201611088069A CN 108134107 A CN108134107 A CN 108134107A
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- battery
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- 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
- H01M8/02—Details
- H01M8/0202—Collectors; Separators, e.g. bipolar separators; Interconnectors
- H01M8/023—Porous and characterised by the material
- H01M8/0239—Organic resins; Organic polymers
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- 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
- H01M8/18—Regenerative fuel cells, e.g. redox flow batteries or secondary fuel cells
- H01M8/184—Regeneration by electrochemical means
- H01M8/188—Regeneration by electrochemical means by recharging of redox couples containing fluids; Redox flow type batteries
-
- 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 invention discloses a kind of application of perforated membrane in Alkaline Zinc iron liquid galvanic battery, the perforated membrane is the porous conductive membranes that are prepared by phase inversion method using one or more kinds of organic polymer resins as raw material；The membrane aperture size of porous conductive membranes is 1~10nm, and porosity is 40~70%；Such porous conductive membranes has higher ion selectivity, can effectively inhibit the migration problem of electrolyte solution, improve the cycle life and battery performance of battery, while significantly reduce the production cost of the system liquid flow energy storage battery membrane material.
Description
Technical field
The present invention relates to a kind of zinc-iron flow battery field, more particularly to a kind of diaphragm is in Alkaline Zinc iron liquid galvanic battery use
Application.
Background technology
Liquid flow energy storage battery is a kind of electrochemical energy storage new technology, compared with other energy storage technologies, has energy conversion effect
Rate height, system flexible design, capacitance of storage is big, addressing is free, can the advantages such as deep discharge, safety and environmental protection, maintenance cost be low, can
It is cut with being widely used in the energy storage of the renewable energy power generations such as wind energy, solar energy, emergency power system, stand-by station and electric system
Peak load etc..Alkaline system zinc-iron flow battery due to it is safe, stability is good, the long lifespan (service life>15 years) etc. it is excellent
Point, particularly in terms of cost, zinc-iron have better advantage, it is considered to be have a kind of liquid energy-storage of very high development potentiality
Battery.
Battery diaphragm is the important component in liquid flow energy storage battery, it plays barrier positive and negative electrode electrolyte, provides hydrogen
The effect of oxygen radical ion transmission channel.The chemical property that chemical stability and ion selectivity of film etc. will directly affect battery
And service life；Therefore it is required that film has relatively low active material permeability (having higher selectivity) and relatively low surface resistance
(having higher ionic conductivity), while should also have preferable chemical stability and relatively low cost.It there is no profession at present
Zinc-iron ion exchange membrane material, main reason is that, zinc-iron flow battery be alkaline system, generally should use anion hand over
Film is changed, but most of anion-exchange membranes are unstable in alkaline medium at present, hinder the further development of the technology.Cause
This, zinc-iron diaphragm for flow battery of the exploitation with highly selective, high stability and low cost is most important.
Membrane separating process using selectivity through film as separating medium, when film both sides, there are certain motive force (such as pressure differentials, dense
Spend poor, potential difference when) when, feed side compositional selecting through film, to achieve the purpose that separation, purify.The structure of seperation film
Generally perforated film structure, according to the size of membrane aperture, what various sizes of molecule can be selective penetrates film, so as to fulfill dividing
Purpose from purification.There is pore separation membrane generally to be obtained by the method for inversion of phases used in industry, basic skills is will to polymerize
The solution of object is layered on tablet (such as glass plate), then as needed, solvent is volatilized a period of time, tablet is immersed polymer
Non-solvent bath in cure, form the perforated film of polymer.
In alkaline system zinc-iron flow battery, zincic acid radical ion, ferrous cyanide ion and hydroxide ion are with hydration
The form of ion exists.According to the calculation formula (formula 1) of Stokes radiuses, the stokes radiuses and ion of ion in the solution
Infiltration coefficient inversely.And in the solution the infiltration coefficient of hydroxide ion be far longer than zincic acid root/ferrous iron cyanogen root from
Sub- infiltration coefficient.Therefore, in solution, the Stokes radiuses of zincic acid root/ferrous iron cyanide ion are far longer than hydroxide ion
Stokes radiuses.
(kB is Boltzmann constant, and T is kelvin degree, and D ions are infiltration coefficient, and η is the viscosity of solution)
According to the difference of zincic acid root/ferrous iron cyanide ion and hydroxide ion Stokes radiuses, if it is contemplated that can be with
The separation to zincic acid root/ferrous iron cyanide ion and hydroxide ion is realized by there is pore separation membrane, by controlling membrance casting condition,
The size in perforated film aperture is controlled, the Selective Separation to different material is realized, passes freely through hydroxide ion in film,
And zincic acid root/ferrous iron cyanide ion is trapped, and can realize function of the amberplex in zinc-iron flow battery.Due to the film
It does not need to introduce ion-exchange group, as long as realizing the function of film by simple aperture adjustment, has widened alkali significantly
The range of choice of property system zinc-iron flow battery membrane material reduces the production cost of film.
Invention content
Present invention aims to overcome that existing Alkaline Zinc iron liquid galvanic battery amberplex there are the problem of, one kind is provided
Alkaline Zinc iron liquid galvanic battery perforated membrane.Can unobvious improve film surface resistance in the case of greatly improve perforated film from
Sub- selective penetrated property, so as to obtain, cost is extremely cheap, is suitble to the diaphragm material of alkaline system zinc-iron flow battery.
To achieve the above object, the technical solution adopted by the present invention is as follows：
The perforated membrane is using one or more kinds of organic polymer resins as raw material, is prepared by phase inversion method
Porous conductive membranes；
The membrane aperture size of porous conductive membranes is 1~10nm, and porosity is 50~70%；
The organic polymer resin is polysulfones, polyketone, polyimides, polybenzimidazoles, Kynoar, polyethylene pyrrole
One or two or more kinds in pyridine, polyacrylonitrile, polypropylene, polyethylene, polybutadiene or cellulose acetate.
The perforated membrane is prepared according to the following procedure,
(1) one kind being dissolved in the one or two or more kinds in organic polymer resin in DMSO, DMAC, NMP, DMF
0.5~10h is sufficiently stirred or in two kinds or more of solvent, at being 20~100 DEG C in temperature, and blend solution is made；It is wherein organic high
Molecule resin concentration is between 10-35wt%；
Volatile solvents can be also added in above-mentioned solvent, form mixed solvent, volatile solvents are in the mixed solvent
A concentration of 0~50wt%；
(2) blend solution prepared by step (1) is poured over nonwoven fabric base bottom or be poured directly on tablet, solvent flashing
0~20 minute, then its mass-impregnation is entered to 5~600s in the poor solvent of resin, be prepared at a temperature of -20~100 DEG C
Porous septum.
The volatile solvents are one or two or more kinds of in methanol, tetrahydrofuran or n-hexane；
The poor solvent of resin is the one or two or more kinds in water, methanol, ethyl alcohol, propyl alcohol or isopropanol.
The thickness for the porous septum being prepared into is between 20~500 μm.
The Alkaline Zinc iron liquid galvanic battery is the active material using Fe (II)/Fe (III) as anode electrolyte, with Zn
(II)/Zn be electrolyte liquid active material, by positive and negative electrode electrolyte between anode and diaphragm, cathode with every
The flow battery of circular flow between film；The wherein pH of positive and negative electrode electrolyte>10.
The beneficial outcomes of the present invention：
(1) porous conductive membranes are realized by the aperture control of film to zincic acid root/ferrous iron cyanide ion and hydroxide ion
Selectivity penetrates, and can overcome the problems, such as that anion exchange membrane stability is poor
(2) perforated membrane prepared by the present invention, aperture is adjustable, and thickness is controllable.By modulation above-mentioned parameter, it can be achieved that cell performance
The controllable adjustment of energy.
(3) present invention has expanded the type and use scope of alkaline system zinc-iron liquid flow energy storage battery membrane material.
Such method for preparing porous film is simple, environmental friendly, and ion selectivity is adjustable.It is more compared with former amberplex
Hole conductive membranes have preferable hydrophily and zincic acid root/ferrous iron cyanide ion obstructing capacity, have higher ion selectivity, can
The effective migration problem for inhibiting electrolyte solution, improves the cycle life and battery performance of battery, while significantly reduce this
The production cost of system flow battery membrane material.Have with the alkaline system zinc-iron flow battery that this is assembled higher comprehensive
Energy.
Description of the drawings
Fig. 1 is application principle figure of the perforated membrane of the present invention in alkaline system zinc-iron flow battery；
Perforated membranes and comparative example 1 of the Fig. 2 prepared by embodiment 1 are in Alkaline Zinc iron liquid galvanic battery, in 80mA cm-2's
Charge-discharge performance comparison under current density.
Specific embodiment
The following examples are the further explanations to the present invention rather than limit the scope of the invention.
Embodiment 1
7.5 grams of polyacrylonitrile are dissolved in 30mlDMSO and 10mlTHF, are stirred 5 hours, the polymer solution of formation, tiling
In glass plate, thickness is 250 μm, is then immersed in 5L water rapidly, curing, forms aperture size as 50nm, porosity 55%
Perforated membrane.
Sodium hydrate aqueous solution of the perforated membrane obtained in 10wt.% is handled 55 minutes, treatment temperature is 55 DEG C.Then
Film with deionized water is cleaned up, impregnates 2h in ethanol, displaces water therein.
Using preparation perforated membrane assemble alkaline system zinc-iron flow battery, wherein Catalytic Layer be activated carbon-fiber felt, bipolar plates
For graphite cake, the effective area of film is 48cm2, current density is 80mA cm-2, zincic acid ion concentration is in electrolyte
0.5mol L-1, a concentration of 1mol L of ferrous cyanogen root cyanide ion-1.The alkaline system zinc-iron flow battery coulombic efficiency of assembling
(CE) it is 98.8%, voltage efficiency (VE) is 89.1%, and energy efficiency (EE) is 88.0%.Battery life>1000 cycles.
Comparative example 1
Compared with Example 1, film is changed to the Nafion115 amberplexes of E.I.Du Pont Company's production into, other conditions are constant.
Battery coulombic efficiency is 88.6%, voltage efficiency 83.3%, energy efficiency 73.8%.Battery life<50 cycles.
Compared with Nafion115 amberplexes, the cycle life of the coulombic efficiency of perforated membrane, energy efficiency and battery
All increase significantly.Illustrate by sieving actoion of the different pore size size to different ions in perforated membrane, effectively improving
The ion selectivity of film, has obstructed the mutual string of zincic acid root/ferrous iron cyanide ion in positive and negative end electrolyte, thus improve
The coulombic efficiency of battery and the stabilization of battery are new.
Comparative example 2
Compared with Example 1, the content of DMSO is improved to 80mL, other conditions are constant, make the perforated membrane of final molding
Porosity reaches 75%.Battery coulombic efficiency is 82.8% after tested, voltage efficiency 80.5%, energy efficiency 66.7%.
Battery life<50 cycles.It can be seen that with embodiment 1, the perforated membrane of porosity 55 compares, coulombic efficiency, energy efficiency and
The cycle life of battery is substantially reduced.
Illustrate by sieving actoion of the different pore size size to different ions in perforated membrane, be effectively improved film from
Sub- selectivity, has obstructed the mutual string of zincic acid root/ferrous iron cyanide ion in positive and negative end electrolyte, thus improves the library of battery
The stability of human relations efficiency and battery.
Embodiment 2
With embodiment 1, polymer is changed into polysulfones, other conditions are constant.
Embodiment 3
With embodiment 1, polymer is changed into polyimides, solvent changes NMP into, and other conditions are constant.
Embodiment 4
With embodiment 1 into, polymer is changed to the mixture of poly- polyacrylonitrile and sulfonated polyether-ether-ketone, other conditions are constant.
Claims (6)
1. a kind of application of perforated membrane in Alkaline Zinc iron liquid galvanic battery, it is characterised in that：
The perforated membrane is using one or more kinds of organic polymer resins as raw material, is prepared by phase inversion method more
Hole conductive membranes；
The membrane aperture size of porous conductive membranes is 1~10nm, and porosity is 50~70%.
2. application according to claim 1, it is characterised in that：
The organic polymer resin for polysulfones, polyketone, polyimides, polybenzimidazoles, Kynoar, polyvinyl pyridine,
One or two or more kinds in polyacrylonitrile, polypropylene, polyethylene, polybutadiene or cellulose acetate.
3. application according to claim 1 or 2, it is characterised in that：The perforated membrane is prepared according to the following procedure,
(1) one kind or two being dissolved in the one or two or more kinds in organic polymer resin in DMSO, DMAC, NMP, DMF
Kind or more solvent in, blend solution is made to be sufficiently stirred 0.5~10h at 20~100 DEG C in temperature；Wherein organic polymer
Resin concentration is between 10~35wt%；
Volatile solvents can be also added in above-mentioned solvent, form mixed solvent, volatile solvents are in the dense of in the mixed solvent
It spends for 0~50wt%；
(2) blend solution prepared by step (1) is poured over nonwoven fabric base bottom or be poured directly on tablet, solvent flashing 0~
20 minutes, then its mass-impregnation is entered to 5~600s in the poor solvent of resin, be prepared at a temperature of -20~100 DEG C porous
Diaphragm.
4. application according to claim 3, it is characterised in that：The volatile solvents are methanol, tetrahydrofuran or just
It is one or two or more kinds of in hexane；
The poor solvent of resin is the one or two or more kinds in water, methanol, ethyl alcohol, propyl alcohol or isopropanol.
5. application according to claim 3, it is characterised in that：The thickness for the porous septum being prepared into 20~500 μm it
Between.
6. application according to claim 1 or 2, it is characterised in that：The Alkaline Zinc iron liquid galvanic battery is with Fe (II)/Fe
(III) as the active material of anode electrolyte, using Zn (II)/Zn as the active material of electrolyte liquid, pass through positive and negative electrode electricity
Solve liquid between anode and diaphragm, between cathode and diaphragm circular flow flow battery；Wherein positive and negative electrode electrolyte
pH>10。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611088069.XA CN108134107A (en) | 2016-12-01 | 2016-12-01 | A kind of perforated membrane is in the application of Alkaline Zinc iron liquid galvanic battery |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611088069.XA CN108134107A (en) | 2016-12-01 | 2016-12-01 | A kind of perforated membrane is in the application of Alkaline Zinc iron liquid galvanic battery |
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| CN108134107A true CN108134107A (en) | 2018-06-08 |
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| CN201611088069.XA Pending CN108134107A (en) | 2016-12-01 | 2016-12-01 | A kind of perforated membrane is in the application of Alkaline Zinc iron liquid galvanic battery |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110943238A (en) * | 2018-09-21 | 2020-03-31 | 中国科学院大连化学物理研究所 | Ion-conducting membrane for flow battery and preparation and application thereof |
| CN111106398A (en) * | 2018-10-25 | 2020-05-05 | 中国科学院上海硅酸盐研究所 | Low-cost aqueous zinc-iron secondary battery |
| CN112652784A (en) * | 2019-10-11 | 2021-04-13 | 中国科学院大连化学物理研究所 | Daramic composite ion conduction membrane, preparation and application |
| CN113036174A (en) * | 2019-12-09 | 2021-06-25 | 中国科学院大连化学物理研究所 | Organic framework copolymer supported porous ion-conducting membrane and preparation and application thereof |
| CN113067095A (en) * | 2019-12-14 | 2021-07-02 | 中国科学院大连化学物理研究所 | Three-dimensional porous elastic diaphragm and preparation and application thereof |
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| CN104300169A (en) * | 2013-07-18 | 2015-01-21 | 中国科学院大连化学物理研究所 | Alkaline zinc vanadium flow battery |
| CN104716353A (en) * | 2013-12-15 | 2015-06-17 | 中国科学院大连化学物理研究所 | Porous membrane used for liquid flow cell and preparation and application thereof |
| CN105742548A (en) * | 2014-12-11 | 2016-07-06 | 中国科学院大连化学物理研究所 | Application of porous membrane in neutral system zinc-iron flow battery |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110943238A (en) * | 2018-09-21 | 2020-03-31 | 中国科学院大连化学物理研究所 | Ion-conducting membrane for flow battery and preparation and application thereof |
| CN110943238B (en) * | 2018-09-21 | 2020-11-20 | 中国科学院大连化学物理研究所 | Ion-conducting membrane for flow battery and preparation and application thereof |
| CN111106398A (en) * | 2018-10-25 | 2020-05-05 | 中国科学院上海硅酸盐研究所 | Low-cost aqueous zinc-iron secondary battery |
| CN112652784A (en) * | 2019-10-11 | 2021-04-13 | 中国科学院大连化学物理研究所 | Daramic composite ion conduction membrane, preparation and application |
| CN112652784B (en) * | 2019-10-11 | 2022-05-06 | 中国科学院大连化学物理研究所 | Daramic composite ion conduction membrane, preparation and application |
| CN113036174A (en) * | 2019-12-09 | 2021-06-25 | 中国科学院大连化学物理研究所 | Organic framework copolymer supported porous ion-conducting membrane and preparation and application thereof |
| CN113036174B (en) * | 2019-12-09 | 2022-05-31 | 中国科学院大连化学物理研究所 | Organic framework copolymer supported porous ion-conducting membrane and preparation and application thereof |
| CN113067095A (en) * | 2019-12-14 | 2021-07-02 | 中国科学院大连化学物理研究所 | Three-dimensional porous elastic diaphragm and preparation and application thereof |
| CN113067095B (en) * | 2019-12-14 | 2022-05-10 | 中国科学院大连化学物理研究所 | Three-dimensional porous elastic diaphragm and preparation and application thereof |
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Application publication date: 20180608 |