CN112310453A - Organic aqueous phase flow battery containing additive based on salt cavern - Google Patents

Organic aqueous phase flow battery containing additive based on salt cavern Download PDF

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CN112310453A
CN112310453A CN202011292989.XA CN202011292989A CN112310453A CN 112310453 A CN112310453 A CN 112310453A CN 202011292989 A CN202011292989 A CN 202011292989A CN 112310453 A CN112310453 A CN 112310453A
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electrolyte
salt
acid
flow battery
battery
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李丹
陈留平
王慧
徐俊辉
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China Salt Jintan Co Ltd
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China Salt Jintan Co Ltd
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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

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Abstract

The invention discloses an additive-containing organic water phase flow battery based on salt caverns. According to the organic water phase flow battery, the pH value of the electrolyte is stabilized by adding the acid-base buffer solution into the positive electrolyte and/or the negative electrolyte, so that the capacity attenuation caused by the electrochemical property change of the active substance due to the pH change is reduced, the circulation stability of the battery is improved, and the long-term stability of the battery operation is ensured. The organic flow battery adopts salt caverns to store electrolyte, and can utilize the larger physical space of the salt caverns to develop a large-scale energy storage system.

Description

Organic aqueous phase flow battery containing additive based on salt cavern
Technical Field
The invention belongs to the technical field of flow batteries, and particularly relates to a salt-cave-based organic water phase flow battery containing an additive.
Background
With the rapid development of economy, the problems of environmental and energy shortage and the like are becoming more serious, and the vigorous development of some clean energy sources such as wind energy, solar energy, tidal energy and the like is promoted. But due to the discontinuous instability of the renewable energy sources, the utilization of the renewable energy sources is greatly limited and the utilization rate is low. Therefore, energy storage technology needs to be developed vigorously to guarantee the stability of the power grid. Among various energy storage technologies, the flow battery energy storage technology is the first choice of a large-scale energy storage technology due to the advantages of large capacity, high safety and low cost.
In recent years, an organic aqueous phase flow battery has rich selection of electrolytes and strong controllability of structural performance, and a neutral aqueous phase electrolyte is environment-friendly and cheap, so that the organic aqueous phase flow battery is considered to be one of the most promising application prospects in the flow battery. Compared with inorganic active substances, most organic active substances are greatly influenced by pH, however, the battery inevitably causes side reactions such as hydrogen evolution, oxygen evolution and the like in the charging and discharging process, and particularly, the sodium chloride is adopted as the supporting electrolyte for the organic neutral aqueous phase flow battery, the chlorine evolution side reaction is obvious, so that the change of the pH value of the electrolyte is inevitably caused, the electrochemical property of the active substances is unstable, and the operation stability of the battery is reduced. Therefore, it is necessary to improve the stability of the battery operation.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art.
Therefore, the invention provides an additive-containing organic water phase flow battery based on salt caverns, which is characterized in that the additive is added into electrolyte to slow down capacity acid and alkali caused by unstable electrochemical properties of active substances, and improve the running stability of the battery.
According to the embodiment of the invention, the salt cavern-based additive-containing organic aqueous phase flow battery comprises: the electrolyte storage reservoirs are arranged oppositely at intervals, are salt cavities with physical dissolving cavities formed after salt mines are mined, and are internally stored with electrolyte which comprises a positive active material, a negative active material and supporting electrolyte; the positive electrode active material and the negative electrode active material are water-soluble organic active materials and are respectively stored in the two salt cavities;
a plurality of flow cell stacks connected in series-parallel, the flow cell stacks comprising: the flow battery stack is communicated with the electrolyte liquid storage, and the electrolyte is input into or output from the electrolyte liquid storage to perform oxidation-reduction reaction;
the battery diaphragm is positioned in the electrolytic cell body, the electrolytic cell body is divided into an anode area and a cathode area by the battery diaphragm, the anode area and/or the cathode area are communicated with the corresponding electrolyte liquid storage tanks, one polar plate is arranged in the anode area, the other polar plate is arranged in the cathode area, a positive electrolyte containing the positive active substance is arranged in the anode area, a negative electrolyte containing the negative active substance is arranged in the cathode area, and the battery diaphragm can be penetrated by the supporting electrolyte to prevent the positive active substance and the negative active substance from penetrating;
a circulation line that inputs or outputs the electrolyte to or from the anode region and/or the cathode region; the circulating pump is arranged on the circulating pipeline and enables the electrolyte to circularly flow and be supplied through the circulating pump; acid-base buffer solutions are added to one side or two sides of the positive electrolyte and the negative electrolyte, so that the pH change of the electrolyte caused by hydrogen evolution, chlorine evolution or oxygen evolution is stabilized.
According to the salt-hole-based additive-containing organic aqueous phase flow battery provided by the embodiment of the invention, the acid-base buffer solution is added to one side or two sides of the positive electrolyte and the negative electrolyte, so that the stability problem in the operation of the battery can be solved, the electrochemical property change of an active substance caused by the pH change of the electrolyte due to hydrogen evolution, chlorine evolution or oxygen evolution is stabilized, the operation stability of the battery is improved, the capacity loss is reduced, and the service life of the battery is prolonged.
According to one embodiment of the present invention, the acid-base buffer solution is one or more of weak acid and its salt, weak base and its salt, and acid salt of polybasic weak acid and its corresponding secondary salt.
According to one embodiment of the present invention, the acid-base buffer solution includes one or more of oxalic acid, sodium hydroxide, potassium hydroxide, sodium bicarbonate, sodium carbonate, potassium dihydrogen phosphate, sodium dihydrogen phosphate, boric acid, borax, sodium tetraborate, acetic acid, sodium acetate, citric acid, carbonic acid, calcium hydroxide, potassium hydrogen phthalate, potassium hydrogen tartrate, ammonia water, and aluminum hydroxide
According to one embodiment of the invention, the acid-base buffer solution has a molar concentration of 0.1 × 10-3mol/L～0.1mol/L。
According to one embodiment of the invention, the salt cavities have a depth of 100m to 2000m and a physical volume of 500m3～50×104m3The geothermal temperature is 25-70 ℃, the inner diameter of the dissolving cavity is 40-120 m, and the height is 60-400 m.
According to an embodiment of the present invention, the positive electrode active material and the negative electrode active material are both organic active materials, the organic active materials include one or more combinations of metallocene complexes and derivatives thereof, carbonyl groups and derivatives thereof, quinones, aldoketones and derivatives thereof, nitro radicals and derivatives thereof, heterocycles and derivatives thereof, and the concentration of the organic active materials is 0.01mol/L to 4 mol/L.
According to one embodiment of the invention, the supporting electrolyte is a NaCl salt solution, a KCl salt solution, Na2SO4Salt solution, K2SO4Salt solution, MgCl2Salt solution, MgSO4Salt solution, CaCl2Salt solution, CaSO4Salt solution, BaCl2Salt solution, BaSO4At least one salt solution with the concentration of 0.1mol/L to 6mol/L
According to one embodiment of the invention, the electrode is a graphite electrode, a metal electrode or a composite conductive catalytic electrode formed as a flat plate, foil, felt or foam cellular member.
The invention has the following beneficial effects:
the invention adds acid-base buffer solution into the electrolyte to stabilize the pH value of the electrolyte, thereby reducing the capacity attenuation caused by the electrochemical property change of the active substance due to the pH change, and improving the circulation stability of the battery. The organic flow battery provided by the invention adopts salt caverns to store electrolyte, and can utilize the larger physical space of the salt caverns to develop a large-scale energy storage system.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a CV curve diagram of a negative active material at different pH values according to example 1 of the present invention;
FIG. 2 is a graph of capacity fade according to example 1 of the present invention versus comparative example 1;
FIG. 3 is a graph comparing the efficiency of the cells according to example 1 of the present invention with that of comparative example 1;
fig. 4 is a CV curve graph of a positive active material at different pH values according to example 2 of the present invention;
FIG. 5 is a graph comparing the capacity of the batteries according to example 2 of the present invention with that of comparative example 2;
fig. 6 is a graph comparing voltage capacity curves after 100 cycles of the batteries of example 2 and comparative example 2 according to the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The salt cavern-based additive-containing organic aqueous phase flow battery according to an embodiment of the present invention is described in detail below with reference to the accompanying drawings.
Specifically, the invention relates to a salt cavern-based additive-containing organic aqueous phase flow battery, which comprises: the flow battery comprises two electrolyte liquid storage banks and a plurality of flow battery stacks connected in series and parallel, wherein each flow battery stack comprises two electrodes, two current collecting plates and a battery diaphragm. The two electrolyte liquid storage banks are oppositely arranged at intervals, each electrolyte liquid storage bank is a salt cave which is formed after salt mine mining and is provided with a physical dissolving cavity, electrolyte is stored in each dissolving cavity, and each electrolyte comprises a positive active material, a negative active material and a supporting electrolyte; the positive electrode active material and the negative electrode active material are water-soluble organic active materials and are respectively stored in the two salt holes; the flow battery stacks are respectively communicated with electrolyte liquid storage reservoirs, and electrolyte is input into or output from the electrolyte liquid storage reservoirs to perform oxidation-reduction reaction; the battery diaphragm is positioned in the electrolytic cell body, the battery diaphragm divides the electrolytic cell body into an anode region and a cathode region, the anode region and/or the cathode region are communicated with corresponding electrolyte liquid storage tanks, one polar plate is arranged in the anode region, the other polar plate is arranged in the cathode region, anode electrolyte containing anode active substances is arranged in the anode region, cathode electrolyte containing cathode active substances is arranged in the cathode region, and the battery diaphragm can support the penetration of electrolyte and prevent the penetration of the anode active substances and the cathode active substances; the circulating pipeline inputs or outputs the electrolyte in one electrolyte storage reservoir to or from the anode region, and the circulating pipeline inputs or outputs the electrolyte in the other electrolyte storage reservoir to or from the cathode region; the circulating pump is arranged on the circulating pipeline and enables the electrolyte to circularly flow and be supplied through the circulating pump; by adding an acid-base buffer solution to the positive and/or negative electrolyte, the pH change of the electrolyte due to hydrogen evolution, chlorine evolution or oxygen evolution is stabilized.
According to the salt-hole-based additive-containing organic aqueous phase flow battery provided by the embodiment of the invention, the acid-base buffer solution is added to one side or two sides of the positive electrolyte and the negative electrolyte, so that the stability problem in the operation of the battery is solved, the electrochemical property change of an active substance caused by the pH change of the electrolyte due to hydrogen evolution, chlorine evolution or oxygen evolution is stabilized, the operation stability of the battery is improved, the capacity loss is reduced, and the service life of the battery is prolonged.
According to one embodiment of the present invention, the acid-base buffer solution is one or more of weak acid and its salt, weak base and its salt, and acid salt of polybasic weak acid and its corresponding secondary salt.
Optionally, the acid-base buffer solution includes one or more of oxalic acid, sodium hydroxide, potassium hydroxide, sodium bicarbonate, sodium carbonate, potassium dihydrogen phosphate, sodium dihydrogen phosphate, boric acid, borax, sodium tetraborate, acetic acid, sodium acetate, citric acid, carbonic acid, calcium hydroxide, potassium hydrogen phthalate, potassium hydrogen tartrate, ammonia water, and aluminum hydroxide.
According to one embodiment of the invention, the acid-base buffer solution has a molar concentration of 0.1 × 10-3mol/L～0.1mol/L。
Optionally, the salt cavity depth is 100 m-2000 m, and the physical volume is 500m3～50×104m3The terrestrial heat temperature is 25-70 ℃, thereforThe inner diameter of the dissolving cavity is 40-120 m, and the height is 60-400 m.
Optionally, the positive active material and the negative active material are organic active materials, the organic active materials include one or more combinations of metallocene complex and its derivatives, carbonyl and its derivatives, quinones, aldehydes and ketones and their derivatives, nitro radical species and their derivatives, heterocycles and their derivatives, and the concentration of the organic active materials is 0.01mol/L to 4 mol/L.
Optionally, the supporting electrolyte is NaCl salt solution, KCl salt solution, Na2SO4Salt solution, K2SO4Salt solution, MgCl2Salt solution, MgSO4Salt solution, CaCl2Salt solution, CaSO4Salt solution, BaCl2Salt solution, BaSO4At least one salt solution with the concentration of 0.1 mol/L-6 mol/L.
Optionally, the electrode is a graphite electrode, a metal electrode or a composite conductive catalytic electrode formed as a flat sheet, foil, felt or foam cellular member.
The salt cavern-based additive-containing organic flow battery of the embodiment of the invention is specifically described below with reference to specific examples.
Example 1
The underground depth is 600m, and the physical volume is 10 ten thousand m3Two salt cavities with height of 80m, maximum inner diameter of 60m and geothermal temperature of 30 ℃ are respectively used as positive and negative electrolyte reservoirs. The positive electrode active substance in the electrolyte adopts water-soluble ferrocene modified by amino, the concentration of the positive electrode active substance is 1mol/L, 0.02mol/L boric acid solution is added into the positive electrode electrolyte, and the negative electrode active substance adopts water-soluble methyl viologen (MV-SO) modified by sulfonic group3) The concentration of the negative electrode active material was 1mol/L, and a 2mol/L NaCl solution was used as the supporting electrolyte. The battery diaphragm adopts an anion exchange membrane, the coulombic efficiency of the single constructed flow battery stack is 99%, the voltage efficiency is 83%, the energy efficiency is 82%, and the capacity retention rate is 99% after 100 cycles of circulation.
Comparative example 1: the battery composition is the same as that of the battery in the embodiment 1, the acid-base buffer solution boric acid is not added to the positive electrode, the coulombic efficiency of a single flow battery stack is 97%, the voltage efficiency is 82%, the energy efficiency is 81%, and the capacity retention ratio is 90% after 100 cycles of circulation. As shown in fig. 1, different pH values in the negative active electrolyte have an influence on the cycling stability of the battery, and as shown in fig. 2, after the additive is added, the charge capacity and the discharge capacity of the battery are both obviously improved, and the capacity fading of the battery is slowed. Meanwhile, as shown in fig. 3, the coulombic efficiency, the voltage efficiency, and the energy efficiency of the battery were slightly promoted after the additives were added.
Example 2
The underground depth is 600m, and the physical volume is 10 ten thousand m3Two salt cavities with height of 80m, maximum inner diameter of 60m and geothermal temperature of 30 ℃ are respectively used as positive and negative electrolyte reservoirs. The positive active material in the electrolyte adopts sodium sulfonate TEMPO (TEMPO-SO)3Na) and the concentration of the positive electrode active substance is 0.5mol/L, 0.02mol/L sodium tetraborate solution is added into the positive electrode electrolyte, and the negative electrode active substance adopts water-soluble methyl viologen (MV-NH) modified by amino4) The concentration of the negative electrode active material is 0.5mol/L, 0.02mol/L citric acid solution is added into the negative electrode solution, and 1.5mol/L NaCl solution is adopted as the supporting electrolyte. The battery diaphragm adopts an anion exchange membrane, the coulombic efficiency of the single constructed flow battery stack is 99%, the voltage efficiency is 83%, the energy efficiency is 82%, and the capacity retention rate is 95% after circulating for 350 circles.
Comparative example 2: the battery composition is the same as that of the battery in the embodiment 2, acid-base buffer solutions are not added to the positive electrode and the negative electrode, the coulombic efficiency of a single flow battery stack is 97%, the voltage efficiency is 82%, the energy efficiency is 81%, and the capacity retention ratio is 60% after 350 cycles. As shown in fig. 4, the effect of different pH values in the positive active electrolyte on the cycling stability of the battery; meanwhile, as shown in fig. 5, after the acid-base buffer solution is added, the charge capacity and the discharge capacity are both slightly improved. As shown in fig. 6, after the buffer solution was added, the voltage capacity was slightly improved after the battery was cycled 100 times, slowing down the capacity loss of the battery during charging and discharging.
Example 3
Adopts the underground depth of 800m and the physical volume of 20 ten thousand m3Two salt cavities with the height of 120m, the maximum inner diameter of 100m and the geothermal temperature of 35 ℃ are respectively used as a positive electrolyte reservoir and a negative electrolyte reservoir. The positive electrode active substance in the electrolyte is potassium ferrocyanide, the concentration of the positive electrode active substance is 0.5mol/L, 0.01mol/L calcium hydroxide solution is added into the positive electrode electrolyte, the negative electrode active substance adopts water-soluble methyl viologen modified by sulfonic acid group, the concentration of the negative electrode active substance is 0.5mol/L, 0.01mol/L potassium hydrogen phthalate is added into the negative electrode solution, and the supporting electrolyte adopts 1.5mol/L NaCl solution. The battery diaphragm adopts a nafion film, and the coulombic efficiency of the built single flow battery stack is 99%, the voltage efficiency is 86% and the energy efficiency is 85%.
Example 4
The underground depth is 1500m, and the physical volume is 30 ten thousand m3Two salt cavities with the height of 90m, the maximum inner diameter of 90m and the geothermal temperature of 50 ℃ are respectively used as a positive and negative electrolyte liquid storage reservoir. The positive electrode active substance in the electrolyte is potassium ferrocyanide, the concentration of the positive electrode active substance is 1.5mol/L, 0.03mol/L ammonia water solution is added into the positive electrode electrolyte, the negative electrode active substance adopts water-soluble methyl viologen modified by sulfonic acid groups, the concentration of the negative electrode active substance is 1.5mol/L, and the supporting electrolyte adopts 3.5mol/L KCl solution. The battery diaphragm adopts an anion exchange membrane, and the coulombic efficiency, the voltage efficiency and the energy efficiency of the single constructed flow battery stack are respectively 99%, 79% and 78%.
In summary, according to the salt pit-based organic aqueous phase flow battery containing the additive, the acid-base buffer solution is added into the positive and/or negative electrode electrolyte, so that the change of the electrochemical property of the active material caused by the pH change of the electrolyte due to hydrogen evolution, chlorine evolution or oxygen evolution is stabilized, and the operation stability of the battery is improved.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. An additive-containing organic aqueous phase flow battery based on salt caverns, comprising:
the electrolyte storage reservoirs are arranged oppositely at intervals, are salt cavities with physical dissolving cavities formed after salt mines are mined, and are internally stored with electrolyte which comprises a positive active material, a negative active material and supporting electrolyte; the positive electrode active material and the negative electrode active material are water-soluble organic active materials and are respectively stored in the two salt cavities;
a plurality of flow cell stacks connected in series and parallel, the flow cell stacks being in communication with the electrolyte reservoir, the electrolyte being input to or output from the electrolyte reservoir for redox reactions;
the flow cell stack includes: two electrodes, two current collecting plates and a battery diaphragm;
the battery diaphragm is positioned in the electrolytic cell body, the electrolytic cell body is divided into an anode area and a cathode area by the battery diaphragm, the anode area and/or the cathode area are communicated with the corresponding electrolyte liquid storage tanks, one polar plate is arranged in the anode area, the other polar plate is arranged in the cathode area, a positive electrolyte containing the positive active substance is arranged in the anode area, a negative electrolyte containing the negative active substance is arranged in the cathode area, the battery diaphragm can be penetrated by the supporting electrolyte to prevent the positive active substance and the negative active substance from penetrating, and the pH change of the electrolyte caused by hydrogen evolution, chlorine evolution or oxygen evolution is stabilized by adding an acid-base buffer solution into the positive electrolyte and/or the negative electrolyte;
a circulation line that inputs or outputs the electrolyte to or from the anode region and/or the cathode region; and the circulating pump is arranged on the circulating pipeline and enables the electrolyte to circularly flow and be supplied through the circulating pump.
2. The salt cavern-based additive-containing organic-aqueous flow battery of claim 1, wherein the acid-base buffer solution is one or more of a weak acid and salts thereof, a weak base and salts thereof, and an acid salt of a weak polybasic acid and a corresponding secondary salt thereof.
3. The salt cavern-based additive-containing organic-aqueous flow battery of claim 1, wherein the acid-base buffer solution comprises one or more of, but not limited to, oxalic acid, sodium hydroxide, potassium hydroxide, sodium bicarbonate, sodium carbonate, potassium dihydrogen phosphate, sodium dihydrogen phosphate, boric acid, borax, sodium tetraborate, acetic acid, sodium acetate, citric acid, carbonic acid, calcium hydroxide, potassium hydrogen phthalate, potassium hydrogen tartrate, ammonia water, and aluminum hydroxide.
4. The salt cavern-based organic-aqueous phase flow battery with additives as claimed in claim 1, wherein the molar concentration of the acid-base buffer solution is 0.1 x 10-3mol/L～0.1mol/L。
5. The salt cavern-based additive-containing organic-aqueous flow battery as claimed in claim 1, wherein the salt cavern depth is 100-2000 m, and the physical volume is 500m3～50×104m3The geothermal temperature is 25-70 ℃, the inner diameter of the dissolving cavity is 40-120 m, and the height is 60-400 m.
6. The salt cavern-based additive-containing organic-aqueous flow battery of claim 1, wherein the positive electrode active material and the negative electrode active material are both organic active materials.
7. The salt cavern-based additive-containing organic-aqueous flow battery as claimed in claim 6, wherein the organic active substance is one or more combinations of metallocene complexes and derivatives thereof, carbonyl groups and derivatives thereof, quinones, aldoketones and derivatives thereof, nitro radicals and derivatives thereof, heterocycles and derivatives thereof, and the concentration of the organic active substance is 0.01mol/L to 4 mol/L.
8. The salt cavern-based additive-containing organic-aqueous flow battery of claim 1, wherein the supporting electrolyte is a NaCl salt solution, a KCl salt solution, Na2SO4Salt solution, K2SO4Salt solution, MgCl2Salt solution, MgSO4Salt solution, CaCl2Salt solution, CaSO4Salt solution, BaCl2Salt solution, BaSO4At least one salt solution.
9. The salt cavern-based additive-containing organic-aqueous flow battery of claim 1, wherein the molar concentration of the supporting electrolyte is 0.1mol/L to 6 mol/L.
10. The salt cavern-based additive-containing organic-aqueous flow battery of claim 1, wherein the electrode is a graphite electrode, a metal electrode, or a composite conductive catalytic electrode formed as a flat plate, foil, felt, or foam cellular member.
CN202011292989.XA 2020-11-18 2020-11-18 Organic aqueous phase flow battery containing additive based on salt cavern Pending CN112310453A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112563548A (en) * 2020-12-25 2021-03-26 郑志海 Three-compartment iron-aluminum flow battery

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109546182A (en) * 2018-10-25 2019-03-29 中盐金坛盐化有限责任公司 The organic flow battery system of aqueous phase system based on salt cave
CN209016196U (en) * 2018-10-25 2019-06-21 中盐金坛盐化有限责任公司 Organic flow battery containing additive based on salt cave

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109546182A (en) * 2018-10-25 2019-03-29 中盐金坛盐化有限责任公司 The organic flow battery system of aqueous phase system based on salt cave
CN209016196U (en) * 2018-10-25 2019-06-21 中盐金坛盐化有限责任公司 Organic flow battery containing additive based on salt cave

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112563548A (en) * 2020-12-25 2021-03-26 郑志海 Three-compartment iron-aluminum flow battery

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