An integrated energy storage-power generation-salt water desalination device

Abstract

The present application provides an integrated energy storage-power generation-salt water desalination device, the device comprising: a power generation device, using salt water as an electrolyte, comprising: a negative electrode; a positive electrode surrounding the outer surface of the negative electrode; a diaphragm disposed between the positive and negative electrodes; an isolating liner disposed within the negative electrode, the isolating liner being a hollow cylinder with a bottom, configured to isolate the inner surface of the negative electrode from the salt water and to contain the salt water; a desalination device disposed within the negative electrode, the desalination device comprising a first electrode plate and a second electrode plate that do not contact each other, the first electrode plate being electrically connected to the negative electrode, the second electrode plate being electrically connected to the positive electrode, the desalination device being configured to desalinate the salt water when powered by the power generation device. The present application cleverly combines the power generation device and the desalination device, and can simultaneously have the functions of long-term continuous power generation, long-term energy storage, and salt water desalination, and the device is easy to carry and easy to operate.

Description

Technical Field

[0001] The present application relates to the technical field of electrochemical power sources, and in particular to an integrated energy storage-power generation-salt water desalination device. Background Art

[0002] In recent years, global warming has rapidly increased, and extreme weather events such as droughts, floods, tsunamis, and earthquakes have become more frequent. As the application environments of emergency equipment become increasingly harsh and their performance limits increase dramatically, the research and development and application of emergency equipment for extreme conditions have attracted widespread attention from scholars both domestically and internationally. The demand for portable emergency equipment that can simultaneously generate freshwater resources and electrical energy in extreme conditions has become a pressing issue.

[0003] Common emergency power generation equipment, such as diesel generators, is common. However, diesel generators are large, heavy, and prone to failure. Furthermore, their fuel tanks are easily ignited and exploded by open flames, making them unsafe. Metal / air (seawater) batteries generate electricity simply through a chemical reaction between metal and oxygen in the air (seawater). Metal / air (seawater) batteries offer numerous advantages. Firstly, they can be used as emergency power generation equipment, activated with seawater or brackish water for long-term, continuous power generation anytime, anywhere. They operate in a wide temperature range, from -30°C to 80°C, ensuring reliable power for outdoor operations. Secondly, they can serve as a backup power source. As long as the battery is not exposed to water, it will not self-discharge, allowing for long-term storage, with a reserve life of up to 10 to 20 years. Furthermore, the metal alloy's low density, light weight, and excellent casting properties make them portable and convenient for outdoor use.

[0004] Common seawater desalination methods include distillation. However, the multi-stage flash evaporation technology used in distillation operates at high temperatures, consumes significant energy, and is susceptible to scaling and corrosion during operation. Furthermore, the equipment used is bulky and unportable. Battery-based desalination devices, on the other hand, not only separate salt ions from seawater but are also adaptable to various sizes and locations.

[0005] However, if the metal / air (seawater) battery with energy storage and power generation functions is simply connected to the energy storage battery or plate with desalination function, the two will remain separated. During use, not only will the two structures need to be protected from crushing by dedicated casings, but also separate containers will be needed to properly dispose of the desalinated water and salt water. These additional structures and steps cannot meet the portability and ease of operation required for emergency devices in extreme conditions. Therefore, designing an easy-to-use portable emergency device that organically combines function and structure, integrating power generation, energy storage, and desalination functions, has become a key and difficult issue that needs to be addressed urgently. Summary of the Invention

[0006] The present application provides an integrated energy storage-power generation-salt water desalination device, which can simultaneously have the functions of long-term continuous power generation, long-term energy storage and salt water desalination, and the device is easy to carry and operate.

[0007] The present application provides an integrated energy storage-power generation-salt water desalination device, comprising: a power generation device, using salt water as an electrolyte, the power generation device comprising: a negative electrode, the negative electrode being a hollow cylinder, and a drain port being provided at the bottom of the negative electrode; a positive electrode surrounding the outer surface of the negative electrode; a diaphragm disposed between the positive and negative electrodes; an isolation liner disposed in the negative electrode and completely covering the inner surface of the negative electrode, the isolation liner being a hollow cylinder with a bottom, configured to isolate the inner surface of the negative electrode from salt water and to accommodate salt water; a desalination device disposed in the negative electrode, the desalination device comprising a first electrode plate and a second electrode plate that do not contact each other, the first electrode plate being electrically connected to the negative electrode, and the second electrode plate being electrically connected to the positive electrode, the desalination device being configured to desalinate salt water when powered by the power generation device.

[0008] In some embodiments of the present application, the negative electrode is a bottomless hollow cylinder, the positive electrode is a bottomless hollow cylinder, and the drain port is located at the bottom of the side of the negative electrode, the positive electrode and the isolation liner.

[0009] In some embodiments of the present application, the negative electrode is a hollow cylinder with a bottom, the positive electrode is a hollow cylinder with a bottom, and the drain port is located at the bottom center of the negative electrode, the positive electrode and the isolation liner.

[0010] In some embodiments of the present application, a cavity for storing salt is further provided between the positive electrode and the negative electrode.

[0011] In some embodiments of the present application, the material of the isolation liner includes at least one of: polymer materials, organic matter, metal, and non-metallic inorganic matter.

[0012] In some embodiments of the present application, the device further includes: a negative electrode tab provided on the negative electrode and a first electrode tab provided on the first electrode plate, the negative electrode and the first electrode plate being electrically connected via the negative electrode tab and the first electrode tab; a positive electrode tab provided on the positive electrode and a second electrode tab provided on the second electrode plate, the positive electrode and the second electrode plate being electrically connected via the positive electrode tab and the second electrode tab.

[0013] In some embodiments of the present application, the negative electrode tab and the first electrode tab are electrically connected via a wire; and the positive electrode tab and the second electrode tab are electrically connected via a wire.

[0014] In some embodiments of the present application, the device further includes: a switch controller, disposed on the negative electrode, configured to control the connection or disconnection of the wire between the positive electrode tab and the second electrode tab.

[0015] In some embodiments of the present application, the inner surface of the positive electrode and the outer surface of the negative electrode are provided with structures for increasing the surface area.

[0016] In some embodiments of the present application, the first electrode plate is a semi-annular cylinder, the second electrode plate and the first electrode plate are exactly the same in shape and size, and the first electrode plate and the second electrode plate are arranged opposite to each other.

[0017] In some embodiments of the present application, the first electrode plate is an annular column, the second electrode plate is an annular column, and the second electrode plate is located inside the first electrode plate.

[0018] In some embodiments of the present application, the desalination device is lower than the upper surface of the negative electrode.

[0019] In some embodiments of the present application, the positive electrode is lower than the upper surface of the negative electrode.

[0020] In some embodiments of the present application, the material of the negative electrode includes: at least one of magnesium, aluminum, and zinc; the material of the positive electrode includes: any one of nickel foam, nickel mesh, carbon fiber felt, and stainless steel mesh, and the positive electrode is also loaded with a redox reaction catalyst, and the redox reaction catalyst includes: at least one of transition metal sulfide, transition metal carbide, transition metal phosphide, and transition metal hydroxide; the material of the diaphragm includes: any one of polyethylene film, polyvinyl alcohol film, polypropylene film, Nafion film, and hydrophilic polytetrafluoroethylene film.

[0021] In some embodiments of the present application, the material of the first electrode plate includes a current collector and an adsorption material located on the surface of the current collector, the material of the current collector includes a graphite sheet, a nickel mesh, a stainless steel mesh, and nickel foam, and the adsorption material includes: any one of activated carbon, graphene, and carbon nanotubes; the structure and material of the second electrode plate are exactly the same as those of the first electrode plate.

[0022] In some embodiments of the present application, the material of the first electrode plate includes a first current collector and a first material located on the surface of the first current collector, the material of the first current collector includes at least one of Ti, Pb, Ni, Ag, stainless steel, graphite paper, and carbon paper, and the first material includes activated carbon, MoO3, Na 0.44At least one of MnO2, NaTi2(PO4)3, NaV3(PO4)3, Na2VTi(PO4)3, Na3MnTi(PO4)3, polyimide, anthraquinone structure polymer, manganese-based Prussian blue, MOFs, and MoS2; the material of the second electrode plate includes a second current collector and a second material located on the surface of the second current collector, the material of the second current collector includes at least one of Ni, Ti, Pb, Ag, stainless steel, graphite paper, and carbon paper, the second material includes activated carbon, graphite, carbon nanotubes, chloride oxide, organic polymers, interlayer compounds, bioceramic materials, Mn3O4, Zn 0.2 At least one of Mn3O4, Ag, and titanium oxide.

[0023] The present application provides an integrated energy storage-power generation-salt water desalination device, which cleverly combines a power generation device capable of generating electricity and a desalination device capable of desalination. It can simultaneously have the functions of long-term continuous power generation, long-term energy storage and salt water desalination, and the device is easy to carry and easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The following figures describe in detail exemplary embodiments disclosed in this application. Like reference numerals denote similar structures throughout the several views of the drawings. Those skilled in the art will appreciate that these embodiments are non-limiting, exemplary embodiments, and that the drawings are provided for illustration and description purposes only and are not intended to limit the scope of this application. Other embodiments may also achieve the inventive intent of this application. It should be understood that the drawings are not drawn to scale.

[0025] in:

[0026] Figure 1 This is a schematic structural diagram of the integrated device described in some embodiments of the present application;

[0027] Figure 2 A schematic longitudinal cross-sectional view of the integrated device according to some embodiments of the present application;

[0028] Figure 3 Schematic diagram of the structure of the integrated device according to other embodiments of the present application;

[0029] Figure 4 It is a schematic longitudinal cross-sectional view of the integrated device described in other embodiments of the present application. DETAILED DESCRIPTION

[0030] The following description provides specific application scenarios and requirements of the present application, with the purpose of enabling those skilled in the art to make and use the content of this application. Various local modifications to the disclosed embodiments will be apparent to those skilled in the art, and the general principles defined herein may be applied to other embodiments and applications without departing from the spirit and scope of this application. Therefore, this application is not limited to the embodiments shown, but is intended to be of the widest scope consistent with the claims.

[0031] The technical solution of the present invention is described in detail below with reference to the embodiments and drawings.

[0032] Figure 1 This is a schematic structural diagram of the integrated device described in some embodiments of the present application. Figure 2 This is a schematic longitudinal cross-sectional view of the integrated device described in some embodiments of the present application.

[0033] refer to Figure 1 and Figure 2 As shown, the integrated device described in the embodiment of the present application includes: a power generation device, using brine as an electrolyte, the power generation device including: a negative electrode 1, the negative electrode 1 being a hollow cylinder, and a drain port being provided at the bottom of the negative electrode 1; a positive electrode 3 surrounding the outer surface of the negative electrode 1; a diaphragm 5 arranged between the positive electrode 3 and the negative electrode 1; an isolation liner 11 arranged in the negative electrode 1, completely covering the inner surface of the negative electrode 1, the isolation liner 11 being a hollow cylinder with a bottom, configured to isolate the inner surface of the negative electrode from the brine and to accommodate the brine; a desalination device arranged in the negative electrode 1, the desalination device including a first electrode plate 6 and a second electrode plate 8 that are not in contact with each other, the first electrode plate 6 being electrically connected to the negative electrode 1, and the second electrode plate 8 being electrically connected to the positive electrode 3, and the desalination device being configured to desalinate the brine when powered by the power generation device.

[0034] The working principle of the integrated device described in the embodiment of the present application is as follows: the positive electrode 3 and the diaphragm 5 are immersed in salt water or the diaphragm 5 is soaked in salt water, the negative electrode 1 reacts with the salt water to discharge, and the electricity generated by the power generation device can be directly supplied to the desalination device or used for external connection, such as external charging of a mobile phone; when the power generation device supplies power to the desalination device, the first electrode plate 6 and the second electrode plate 8 respectively absorb the anions and cations in the salt water contained in the negative electrode 1, thereby achieving the purpose of desalination and purification of the salt water, and when the concentration of the solution drops to a certain level, drinkable desalinated water can be obtained. It should be noted that the salt water described in the embodiment of the present application refers to an aqueous solution of salt compounds in a broad sense, not just a sodium chloride solution in a narrow sense. For example, the salt water can be seawater.

[0035] In addition, when the fresh water in the negative electrode 1 is consumed, salt water is re-injected into the negative electrode 1 and the electrical connection between the power generation device and the desalination device is disconnected. The first electrode plate 6 and the second electrode plate 8 are automatically short-circuited. At this time, the charged particles adsorbed on the first electrode plate 6 and the second electrode plate 8 will fall off the electrode plate and be released into the salt water solution. Then, they are discharged from the drain port at the bottom of the device together with the salt water, thereby realizing the regeneration and recycling of the first electrode plate 6 and the second electrode plate 8.

[0036] Continue to refer Figure 1 and Figure 2 As shown, the material of the positive electrode 3 includes any one of nickel foam, nickel mesh, carbon fiber felt, and stainless steel mesh. A redox reaction catalyst is also supported on the positive electrode 3. The redox reaction catalyst includes at least one of a transition metal sulfide, a transition metal carbide, a transition metal phosphide, and a transition metal hydroxide. Nickel foam, nickel mesh, carbon fiber felt, and stainless steel mesh can greatly improve battery performance, increase porosity, and provide a large specific surface area, thereby reducing energy consumption and improving efficiency.

[0037] refer to Figure 1 and Figure 2 As shown, in some embodiments of the present application, the positive electrode 3 is a bottomless hollow cylinder. Reducing the volume of the positive electrode 3 can reduce the weight of the entire device and improve portability. The positive electrode 3 surrounds the negative electrode 1 and together with the negative electrode 1 forms a power generation device. Therefore, the shape and size of the positive electrode 3 only need to be compatible with the negative electrode 1. The drain port is located at the bottom center or side bottom of the negative electrode 1, the positive electrode 3, and the isolation liner 11.

[0038] Figure 3 This is a schematic structural diagram of the integrated device described in other embodiments of the present application. Figure 4 It is a schematic longitudinal cross-sectional view of the integrated device described in other embodiments of the present application.

[0039] refer to Figure 3 and Figure 4 As shown, in some other embodiments of the present application, the positive electrode 3 can be a hollow cylinder with a bottom. This can increase the volume of the separator 5, thereby increasing the amount of salt water that can be accommodated between the positive electrode 3 and the negative electrode 1, thereby improving power generation and efficiency. Furthermore, a cavity for storing salt 13 is provided between the positive electrode 3 and the negative electrode 1. The device itself has a salt storage capacity, allowing it to use fresh water for power generation even when there is no salt water in the external environment. The salt 13 is granular.

[0040] In some embodiments of the present application, the outer diameter of the positive electrode 3 is 76-80 mm, the inner diameter is 75-79 mm, and the thickness is 1-5 mm.

[0041] Continue to refer Figure 1 and Figure 2 As shown, in some embodiments of the present application, the negative electrode 1 can be a hollow cylinder with a bottom or a hollow cylinder without a bottom, and the material of the negative electrode 1 includes: at least one of magnesium, aluminum, zinc and their alloys. The material of the negative electrode 1 is mainly a material that can react with salt water to discharge. Metal materials and their alloys have low density, good casting properties, and good mechanical strength. They can protect the first electrode and the second electrode placed in the negative electrode from being damaged by extrusion, can reduce the overall weight of the device, and improve portability. Furthermore, magnesium, aluminum, and zinc in the metal materials have high reactivity and low density, and therefore can be used as the preferred material for the negative electrode 1.

[0042] In this embodiment, the negative electrode 1 is a hollow cylinder with a bottom, such as a hollow circular cylinder with a bottom or a hollow square cylinder with a bottom, etc. The hollow cavity in the negative electrode 1 can be used to accommodate a desalination device and brine to be desalinated.

[0043] In some embodiments of the present application, the outer diameter of the negative electrode 1 is 73-77 mm, the inner diameter is 72-76 mm, and the thickness is 1-5 mm.

[0044] Continue to refer Figure 1 and Figure 2 As shown, in some embodiments of the present application, the material of the diaphragm 5 includes any one of a polyethylene film, a polyvinyl alcohol film, a polypropylene film, a Nafion film (perfluorinated membrane), and a hydrophilic polytetrafluoroethylene film. The diaphragm 5 is used to absorb salt water as an electrolyte, so the diaphragm 5 is preferably made of a material with strong water absorption properties.

[0045] The shape and size of the separator 5 are adapted to the shape and size of the positive electrode 1 .

[0046] In some embodiments of the present application, the outer diameter of the diaphragm 5 is 75-76 mm, the inner diameter is 74.5-75.5 mm, and the thickness is 0.5-1.5 mm.

[0047] In some embodiments of the present application, the material participating in the reaction of the positive electrode is air, the material participating in the reaction of the negative electrode is magnesium alloy, the material of the diaphragm is a hydrophilic polytetrafluoroethylene membrane, and the salt water used as the electrolyte is seawater.

[0048] The reaction at the positive electrode is: O2+2H2O+4e - →4OH -

[0049] The reaction at the negative electrode is: Mg→Mg 2+ +2e -

[0050] Overall battery reaction:

[0051] Continue to refer Figure 1 and Figure 2 As shown, the isolation liner 11 is disposed within the negative electrode 1, completely covering the inner surface of the negative electrode 1. The isolation liner 11 is configured to isolate the inner surface of the negative electrode 1 from the salt water and to contain the salt water. Salt water may corrode the inner surface of the negative electrode 1, so the isolation liner 11 is required to protect the inner surface of the negative electrode 1 from corrosion.

[0052] In some embodiments of the present application, the material of the isolation liner 11 includes at least one of: polymer materials, organic matter (plastics, paints, high molecular compounds, etc.), metals (Zn, Sn, Cd, Pb, Al, etc.), and non-metallic inorganic substances (oxides, phosphates, silicates, clay, etc.).

[0053] In some embodiments of the present application, the outer diameter of the isolation liner 11 is 74 mm, the inner diameter is 73.9 mm, and the thickness is 0.1 mm.

[0054] In some embodiments of the present application, the positive electrode 3, negative electrode 1, separator 5, and separator liner 11 are connected to each other by point-bonding or mechanical fastening (porous tape binding). When any of the positive electrode 3, negative electrode 1, separator 5, and separator liner 11 is damaged or reaches the end of its service life, it can be easily replaced.

[0055] Continue to refer Figure 1 and Figure 2 As shown, in some embodiments of the present application, the salt water desalination device further includes: a negative electrode tab 2 provided on the negative electrode 1 and a first electrode tab 7 provided on the first electrode plate 6, wherein the negative electrode 1 and the first electrode plate 6 are electrically connected via the negative electrode tab 2 and the first electrode tab 7; a positive electrode tab 4 provided on the positive electrode 3 and a second electrode tab 9 provided on the second electrode plate 8, wherein the positive electrode 3 and the second electrode plate 8 are electrically connected via the positive electrode tab 4 and the second electrode tab 9. Specifically, for example, the negative electrode tab 2 and the first electrode tab 7 can be electrically connected via an electric wire; and the positive electrode tab 4 and the second electrode tab 9 can be electrically connected via an electric wire.

[0056] Continue to refer Figure 1 and Figure 2As shown, in some embodiments of the present application, the salt water desalination device further includes: a switch controller 10, which is provided on the negative electrode 1 and is configured to control the connection or disconnection of the wire between the positive electrode tab 4 and the second electrode tab 9, thereby controlling the electrical connection or disconnection between the power generation device and the desalination device. It should be noted that, for the purpose of simplicity, the accompanying drawings only show a schematic diagram of the switch controller 10 and the wires to illustrate the functions of the switch controller 10 and the wires and their connection relationship with other structures. In practice, the switch controller 10 is provided on the upper surface or outer surface of the negative electrode 1, and the wires can be internally connected or externally connected.

[0057] When the switch controller 10 is turned on, the power generation device and the desalination device will be in the working state of power generation and desalination (and energy storage at the same time) respectively; when the switch controller 10 is disconnected, the power generation device and the desalination device can supply the previously stored electric energy to external devices as an emergency power supply, such as charging a mobile phone.

[0058] In some embodiments of the present application, structures for increasing the surface area are provided on the inner surface of the positive electrode 3 and the outer surface of the negative electrode 1. This can increase the volume of the separator 5 between the positive electrode 3 and the negative electrode 1 and the amount of salt water that can be accommodated or adsorbed, thereby increasing the power generation and power generation efficiency of the power generation device.

[0059] In some embodiments of the present application, the inner surface of the positive electrode 3 and the outer surface of the negative electrode 1 may be provided with a plurality of protrusions, such as cylindrical protrusions, pyramidal protrusions, annular protrusions, thread-shaped protrusions, etc. The inner and outer surfaces of the diaphragm 5 may have structures corresponding to the plurality of protrusions, respectively, so that the diaphragm 5 and the negative electrode 1 and the positive electrode 3 are perfectly interlocked.

[0060] In some embodiments of the present application, the inner surface of the positive electrode 3 and the outer surface of the negative electrode 1 are provided with a plurality of small holes, such as circular holes, square holes, pyramid-shaped holes, etc. The inner and outer surfaces of the separator 5 may have structures corresponding to the plurality of protrusions, respectively, so that the separator 5 and the negative electrode 1 and the positive electrode 3 are perfectly interlocked.

[0061] Continue to refer Figure 1 and Figure 2 As shown, in some embodiments of the present application, the first electrode plate 6 is a semi-annular cylinder, and the second electrode plate 8 has the same shape and size as the first electrode plate 6. The first electrode plate 6 and the second electrode plate 8 are arranged opposite each other. The first electrode plate 6 and the second electrode plate 8 are used to absorb anions and cations in the salt water. Therefore, the surface area of ​​the first electrode plate 6 and the second electrode plate 8 should be as large as possible to improve the adsorption capacity.

[0062] In other embodiments of the present application, the first electrode plate 6 is an annular cylinder, the second electrode plate 8 is an annular cylinder, and the second electrode plate 8 is located inside the first electrode plate 6. This arrangement can increase the surface area of ​​the first electrode plate 6 and the second electrode plate 8 and reduce the distance between the first electrode plate 6 and the second electrode plate 8, thereby improving the ability to desalinate salt water.

[0063] In some embodiments of the present application, the bottoms of the first electrode plate 6 and the second electrode plate 8 are connected to the isolation liner 11 by bottom adhesion or auxiliary mechanical methods (the bottom of the isolation liner can be made into grooves matching the sizes of the two electrode plates to fix the electrode plates in an embedded form).

[0064] In some embodiments of the present application, the desalination device absorbs anions and cations from saltwater via electrosorption. When the first and second plates 6 and 8 are energized, the anions and cations in the saltwater migrate toward the first and second plates 6 and 8, respectively, under the influence of the electric field and concentration gradient, and are adsorbed onto their surfaces, forming a double electric layer, thereby achieving desalination and purification. Therefore, the first plate 6 is made of a current collector and an adsorbent material located on its surface. The current collector may be made of a highly conductive, non-electrolytic graphite sheet, nickel mesh, stainless steel mesh, or nickel foam. The adsorbent material may include activated carbon, graphene, or carbon nanotubes. The second plate is constructed and made of the same materials as the first plate. Saltwater serves as the electrolyte.

[0065] In some embodiments of the present application, the principle of the desalination device absorbing anions and cations in salt water is electrode intercalation reaction. The desalination device is an aqueous dual-ion battery. When the first electrode plate 6 and the second electrode plate 8 are energized, the anions and cations in the salt water enter the second electrode plate 8 and the first electrode plate 6 respectively and undergo chemical reactions to achieve the purpose of desalination and purification. Therefore, the material of the first electrode plate 6 includes a negative electrode current collector and a negative electrode material located on the surface of the negative electrode current collector. The material of the negative electrode current collector includes at least one of Ti, Pb, Ni, Ag, stainless steel, graphite paper, and carbon paper. The negative electrode material includes activated carbon, oxides (MoO3, Na 0.44MnO2), phosphate (NaTi2(PO4)3, NaV3(PO4)3, Na2VTi(PO4)3, Na3MnTi(PO4)3), organic matter (polyimide, anthraquinone structure polymer [poly(2-vinyl anthraquinone), PVAQ]), manganese-based Prussian blue, MOFs, at least one of MoS2; the material of the second electrode plate 8 includes a positive electrode collector and a positive electrode material located on the surface of the positive electrode collector, the material of the positive electrode collector includes: at least one of Ni, Ti, Pb, Ag, stainless steel, graphite paper, carbon paper, the positive electrode material includes: activated carbon, graphite, carbon nanotubes, chloride oxide (BiOCl, FeOCl, VOCl), organic polymer (chloride ion doped polypyrrole (PPyCl)), interlayer compound (CoFe-LDH), bioceramic material, Mn3O4, Zn 0.2 At least one of Mn3O4, Ag, and titanium oxide (rutile, anatase, and brookite).

[0066] In some embodiments of the present application, the material of the first electrode plate is NaTi2(PO4)3, and the material of the second electrode plate is Zn 0.2 Mn3O4, the brine to be desalinated is seawater.

[0067] The reaction at the first plate is: NaTi2(PO4)3+2Na + +2e - →Na3Ti2(PO4)3

[0068] The reaction at the second plate is: Zn 0.2 Mn3O4+1.7Cl - -1.7e - →Zn 0.2 Mn3O4Cl 1.7

[0069] Continue to refer Figure 1 and Figure 2 As shown, in some embodiments of the present application, the desalination device (the first electrode plate 6 and the second electrode plate 8) is lower than the upper surface of the negative electrode 1. In this way, when the negative electrode 1 contains salt water, the desalination device can be completely immersed in the salt water, thereby increasing the contact area between the desalination device and the salt water and improving the efficiency of desalination of the salt water.

[0070] Continue to refer Figure 1 and Figure 2 As shown, in some embodiments of the present application, the positive electrode 3 is lower than the upper surface of the negative electrode 1. This is to allow the positive electrode 3 and the separator 5 to be immersed in salt water without causing the salt water to overflow the upper surface of the negative electrode 1 and enter the negative electrode 1, thereby interfering with the salt water desalination process in the negative electrode 1.

[0071] Continue to refer Figure 1 and Figure 2 As shown, the salt water desalination device further includes a valve 12 for controlling the opening and closing of the drain port at the bottom of the negative electrode 1. The valve 12 can also be replaced with a rubber stopper or other structure capable of controlling the opening and closing of the drain port, such as a plastic tube with a cap.

[0072] In some embodiments of the present application, to further improve the potability of the desalinated salt water, a filter device may be provided at the drain outlet to filter impurities from the desalinated salt water. The filter device may be provided separately at the drain outlet or integrated into a structure such as a valve or rubber stopper that controls the opening and closing of the drain outlet.

[0073] In some embodiments of the present application, the total weight of the salt water desalination device is approximately 80g. Specifically, the overall size of the device can be selected based on the applicable scenario. For example, if the device needs to be portable, a smaller and lighter device can be selected; if the device needs to be vehicle-mounted, a larger and heavier device can be selected, but with greater power generation and the ability to desalinate a larger amount of salt water.

[0074] In order to solve the shortcomings of the existing technology that power generation and desalination cannot be carried out simultaneously, the working devices of the two cannot be organically combined, and the convenient portability and operation are difficult. The technical solution of the present application provides an integrated energy storage-power generation-salt water desalination device. On the one hand, the device can achieve long-term continuous power generation anytime and anywhere and the storage period can reach decades. On the other hand, it also has the desalination function of salt water desalination, thereby obtaining drinkable desalinated water. At the same time, the overall device fully considers the feasibility of operation under extreme conditions and the convenience of use. The overall volume of the device can be large or small, and the metal alloy has the characteristics of low density, light weight and high mechanical strength. It can not only be used as the negative electrode of the metal / air (seawater) battery, but also as a container for salt water or fresh water. At the same time, it can also protect the inner layer of desalination-energy storage battery from being squeezed. This easy-to-operate portable emergency device that organically combines function and structure and integrates power generation, energy storage and desalination functions plays a great emergency role in the shortage of freshwater resources and electric energy under extreme conditions.

[0075] The present application provides an integrated energy storage-power generation-salt water desalination device, which cleverly combines a power generation device capable of generating electricity and a desalination device capable of desalination. It can simultaneously have the functions of long-term continuous power generation, long-term energy storage and salt water desalination, and the device is easy to carry and easy to operate.

[0076] In summary, after reading the contents of this application, those skilled in the art will understand that the foregoing contents are presented by way of example only and are not intended to be limiting. Although not expressly stated herein, those skilled in the art will understand that this application is intended to encompass various reasonable changes, improvements, and modifications to the embodiments. Such changes, improvements, and modifications are within the spirit and scope of the exemplary embodiments of this application.

[0077] It should be understood that the term "and / or" used in this embodiment includes any and all combinations of one or more of the associated listed items. It should be understood that when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element, or intervening elements may be present.

[0078] It should also be understood that the terms “comprise,” “comprising,” “include,” or “including,” when used in this application document, indicate the presence of the recited features, integers, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof.

[0079] It should also be understood that although the terms first, second, third, etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. Therefore, without departing from the teachings of the present application, the first element in some embodiments may be referred to as the second element in other embodiments. The same reference numerals or the same reference designators represent the same elements throughout the specification.

[0080] In addition, this specification describes exemplary embodiments by reference to idealized exemplary cross-sectional views and / or plan views and / or perspective views. Therefore, differences from the illustrated shapes due to, for example, manufacturing techniques and / or tolerances are foreseeable. Therefore, the exemplary embodiments should not be interpreted as limited to the shapes of the regions shown herein, but should include deviations in shapes due to, for example, manufacturing. Therefore, the regions shown in the figures are schematic in nature, and their shapes are not intended to illustrate the actual shapes of the regions of the device nor to limit the scope of the exemplary embodiments.

Claims

1. An integrated energy storage-power generation-salt water desalination device, characterized in that: include: A power generation device using salt water as an electrolyte, comprising: A negative electrode, the negative electrode is a hollow cylinder with a bottom, and a drainage port is provided at the bottom of the negative electrode; A positive electrode, the positive electrode is a hollow cylinder with a bottom or a hollow cylinder without a bottom, and the positive electrode surrounds the outer surface of the negative electrode; a separator, disposed between the positive electrode and the negative electrode; An isolation liner is disposed in the hollow cavity of the negative electrode and completely covers the inner surface of the negative electrode. The isolation liner is a hollow cylinder with a bottom and is configured to isolate the inner surface of the negative electrode from the brine and to contain the brine; a desalination device disposed in the hollow cavity of the negative electrode, the desalination device comprising a first electrode plate and a second electrode plate that are not in contact with each other, the first electrode plate being electrically connected to the negative electrode, the second electrode plate being electrically connected to the positive electrode, the desalination device being configured to desalinate salt water when powered by the power generation device; When the power generation device supplies power to the desalination device, the first electrode plate and the second electrode plate respectively absorb anions and cations in the brine contained in the hollow cavity of the negative electrode, thereby achieving the purpose of desalination and purification of the brine; when the fresh water in the hollow cavity of the negative electrode is used up, brine is re-injected into the hollow cavity of the negative electrode and the electrical connection between the power generation device and the desalination device is disconnected, the first electrode plate and the second electrode plate are automatically short-circuited, and the charged particles adsorbed on the first electrode plate and the second electrode plate will fall off the electrode plate and be released into the brine solution, and then be discharged from the drain port at the bottom of the device together with the brine, thereby achieving the regeneration and recycling of the first electrode plate and the second electrode plate.

2. The integrated device according to claim 1, characterized in that: A cavity for storing salt is also provided between the positive electrode and the negative electrode.

3. The integrated device according to claim 1, wherein: The material of the isolation liner includes at least one of polymer materials, organic matter, metal, and non-metallic inorganic matter.

4. The integrated device according to claim 1, wherein: Also includes: A negative electrode tab is provided on the negative electrode and a first electrode tab is provided on the first electrode plate, and the negative electrode and the first electrode plate are electrically connected through the negative electrode tab and the first electrode tab; a positive electrode tab is provided on the positive electrode and a second electrode tab is provided on the second electrode plate, and the positive electrode and the second electrode plate are electrically connected through the positive electrode tab and the second electrode tab.

5. The integrated device according to claim 4, characterized in that: The negative electrode tab and the first electrode tab are electrically connected through a wire; the positive electrode tab and the second electrode tab are electrically connected through a wire.

6. The integrated device according to claim 5 is characterized in that: It also includes a switch controller, which is arranged on the negative electrode and is configured to control the connection or disconnection of the wire between the positive electrode tab and the second electrode tab.

7. The integrated device according to claim 1, wherein: The inner surface of the positive electrode and the outer surface of the negative electrode are provided with structures for increasing the surface area.

8. The integrated device according to claim 1, wherein: The first electrode plate is a semi-annular cylinder. The second electrode plate and the first electrode plate are completely identical in shape and size. The first electrode plate and the second electrode plate are arranged opposite to each other.

9. The integrated device according to claim 1, wherein: The first electrode plate is an annular column, the second electrode plate is an annular column, and the second electrode plate is located inside the first electrode plate.

10. The integrated device according to claim 1, wherein: The desalination device is lower than the upper surface of the negative electrode.

11. The integrated device according to claim 1, wherein: The positive electrode is lower than the upper surface of the negative electrode.

12. The integrated device according to claim 1 is characterized in that The material of the negative electrode includes: at least one of magnesium, aluminum, and zinc; the material of the positive electrode includes: any one of nickel foam, nickel mesh, carbon fiber felt, and stainless steel mesh; the positive electrode is also loaded with a redox reaction catalyst, and the redox reaction catalyst includes: at least one of transition metal sulfide, transition metal carbide, transition metal phosphide, and transition metal hydroxide; the material of the diaphragm includes: any one of polyethylene film, polyvinyl alcohol film, polypropylene film, Nafion film, and hydrophilic polytetrafluoroethylene film.

13. The integrated device according to claim 1, wherein: The materials of the first electrode plate include a current collector and an adsorption material located on the surface of the current collector. The materials of the current collector include graphite sheets, nickel mesh, stainless steel mesh, and nickel foam. The adsorption material includes: any one of activated carbon, graphene, and carbon nanotubes. The structure and materials of the second electrode plate are exactly the same as those of the first electrode plate.

14. The integrated device according to claim 1, wherein: The material of the first electrode plate includes a first current collector and a first material located on the surface of the first current collector. The material of the first current collector includes at least one of Ti, Pb, Ni, Ag, stainless steel, graphite paper, and carbon paper. The first material includes activated carbon, MoO3, Na o.44 MnO2, NaTi2(PO4)3, At least one of NaV3(PO4)3, Na2VTi(PO4)3, Na3MnTi(PO4)3, polyimide, anthraquinone structure polymer, manganese-based Prussian blue, MOFs, and MoS2; the material of the second electrode plate includes a second current collector and a second material located on the surface of the second current collector, the material of the second current collector includes at least one of Ni, Ti, Pb, Ag, stainless steel, graphite paper, and carbon paper, the second material includes activated carbon, graphite, carbon nanotubes, chloride oxide, organic polymers, interlayer compounds, bioceramic materials, Mn3O4, Zn 0.2 At least one of Mn3O4, Ag, and titanium oxide.

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