KR20160140154A - Metal-Air battery and Metal anode structure of the same - Google Patents

Abstract

The present invention relates to a metal-air battery and a metal anode structure for the same. The metal-air battery of the present invention comprises: a metal anode structure including a plurality of unit metal having a spherical, polyhedral, disk, or polygonal plate shape and in contact with each other; an air cathode structure including carbon nanotube (CNT) or graphene; and a solution or gel type polymer electrolyte provided between the metal anode structure and the air cathode structure. The air cathode structure is provided on at least a portion of the surface of a case in which the metal anode structure is received. The metal-air battery of the present invention can achieve a more flexible and stable power supply structure.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a metal-air battery,

The present invention relates to a metal-air battery and an electrode structure therefor.

Generally, a metal-air battery is a metal-air battery that uses mainly lithium (Li) to combine metals such as aluminum (Al), magnesium (Mg), and zinc (Zn) with oxygen in the air to generate electricity .

However, in the case of lithium (Li), due to the high cost and the risk of explosion, interest in a metal material to replace lithium (Li) has increased, and a study on development of a metal air battery having characteristics of low cost and high safety has been made ought.

In addition, since metal-air batteries have relatively high safety, researches are actively conducted to apply them to portable devices and devices requiring flexibility.

For example, Patent Document 1 discloses a technique related to a high-energy metal air battery, in which lithium (Li) is used as an anode based on a net shape, and a polymer is used as an air cathode.

The above Patent Document 1 discloses various battery structures such as coin type and pouch type battery.

And, Patent Document 2 discloses a metal-fuel fuel cell battery system using a metal fuel card, which is based on a fuel cell structure.

In (Patent Document 2), a card-shaped metal is inserted into a fuel cell structure to discharge and charge the battery, thereby operating the battery. On the other hand, in such a case, if a period of time has elapsed, the card-shaped metal must be periodically replaced.

(Patent Document 3) discloses a solid-state-electrolyte-based metal-air fuel cell employing metal nano powder as fuel, and discloses a solid metal air battery based on metal nano-powder.

In the case of (Patent Document 3), metal nano powder is melted and used as a metal anode under vacuum, argon, and nitrogen gas, which complicates the fabrication process and consumes a large amount of energy.

On the other hand, non-patent reference 1 discloses a study of developing a flexible tubular battery using zinc (Zn).

(Non-Patent Document 1) discloses a method of manufacturing a battery by using zinc (Zn) as a metal anode, placing a metal anode and an air cathode in the form of a cylinder tube, and pouring a gel-like polymer electrolyte therebetween .

However, in the above (Non-Patent Document 1), a long time curing process is required, and a large amount of alkaline material (6M KOH) is used for the electrolyte, and the entire manufacturing process is complicated and high cost is required.

In addition, (Non-Patent Document 2) discloses a study on a solid metal air battery using an aluminum mesh as a metal electrode.

In the above (Non-Patent Document 2), a nickel mesh having various metal oxides such as La ₂ O ₃ , SrO, MnO ₂ and the like and PVDF coating was used as a negative electrode, and battery performance was confirmed using a polymer gel electrolyte.

However, in the above-mentioned (Non-Patent Document 2), the polymerization has to proceed inside the battery for the solid electrolyte, so that the manufacturing process is complicated and high cost is required in manufacturing the air cathode.

In addition, (Non-Patent Document 3) discloses a study on a zinc air battery printed with alkaline.

In the above (Non-Patent Document 3), a zinc plate is used as a positive electrode, manganese dioxide is used as a negative electrode, and PAA and KOH are used as a polymer gel electrolyte.

However, in such a case, there is a disadvantage that the curing process must be performed several times after the printing process, and the conventional battery multi-layered structure including the anode layer, the electrolyte layer, the separator layer, the cathode layer, and the charge collecting layer can not escape.

US 20110059355 A1 KR 0588786 B1 KR 1355965 B1

 Joo-yong Park, Minjoon Park, Gyutae Nam, Jang-soo Lee, and Jaephil Cho, All-Solid-State Cable-Type Flexible Zinc-Air Battery, Advanced Materials, 2015, 27, 1396-401.  Zhao Zhang, Chuncheng Zuo, Zhiui Liu, Ying Yu, Yuxin Zuo *, Yu Song, All-solid-state Aleair batteries with polymer alkaline gel electrolyte, Journal of Power Sources 2014, 251, 470-475.  Abhinav M. Gaikwad, Gregory L. Whiting, * Daniel A. Steingart, * and Ana Claudia Arias, Highly Flexible, Printed Alkaline Batteries Based on Mesh-Embedded Electrodes, Advanced Materials 2011, 23, 3251-3255.

SUMMARY OF THE INVENTION An object of the present invention is to provide a metal-air battery having a low cost and high stability by using a metal such as aluminum (Al), magnesium (Mg), zinc (Zn) .

It is another object of the present invention to provide a metal-air battery electrode structure for allowing the metal-air battery to be formed as a single layer.

It is still another object of the present invention to provide a metal air battery in which supply of the metal anode structure can be made easier.

The metal-air battery according to the present invention includes a metal anode structure in which a plurality of unit metals, which are made of a spherical, polyhedral, disk or polygonal plate, are in contact with each other, a carbon nanotube (CNT) Wherein the air cathode structure includes at least a part of the case in which the metal anode structure is accommodated, and an air cathode structure including a cathode and an air cathode, wherein the air cathode structure includes a solution or gel polymer electrolyte disposed between the metal anode and the air cathode, And is provided on the surface.

The electrode structure of the metal-air battery according to the present invention includes a metal anode structure formed to be in contact with a plurality of unitary metals made of spheres or polyhedrons or disks or polygonal plates, And an air cathode structure formed by depositing iron oxide and graphene having surface-treated gold nanoparticles.

According to another aspect of the present invention, there is provided a metal-air battery comprising: a metal anode structure having a plurality of unit metals made of a spherical, polyhedral, disk or polygonal plate; An air cathode structure including an air permeable case, a carbon nanotube (CNT) or a graphene provided on the surface of the air permeable case, and an air cathode structure including the metal anode structure and the air And a polymer electrolyte in the form of a solution or a gel to be filled between the cathode structure and the cathode structure.

According to another aspect of the present invention, there is provided a metal-air battery comprising: a metal anode structure including a plurality of unit metals made of a spherical, polyhedral, disc or polygonal plate; An air permeable case arranged on the air permeable case and a carbon nanotube (CNT) or graphene, the air permeable case having an air cathode And a gel electrolyte contained in the air permeable case and positioned between the metal anode structure and the air cathode structure, wherein the spaced apart unit metal Electrically conductive wires or carbon and metal paints or polymers with adhesive and electrical conductivity. Characterized in that connected to each other through one.

In the metal-air battery according to the present invention, the metal anode structure, the air cathode structure, and the polymer electrolyte may be formed as a single layer on one side of the air permeable case.

Accordingly, the size and structure of the battery can be manufactured in various forms according to the user's demand, and in particular, it is possible to provide a form advantageous for manufacturing an electronic device and an integral battery.

In addition, it can be applied to smart cards and flexible display devices. In addition, it can be applied to various fields such as the energy source of the lighting device such as packaging or banner of the product and the energy source of the device for controlling the temperature of the individually packaged product And the like.

In addition, according to the present invention, since aluminum (Al), magnesium (Mg), zinc (Zn) or the like is used as a material metal, the material is easily accessible and the manufacturing process of the battery is performed in the atmosphere. It can also be used as a resource for education.

In addition, when forming the hybrid structure with the fuel cell, the metal-air battery is operated with the moisture released from the fuel cell, and hydrogen gas emitted from the metal-air battery can be supplied to the fuel cell to generate a synergistic effect.

Meanwhile, in the present invention, the material metal is supplied in the form of a unit metal form and a plurality of units are connected to each other. Therefore, the reaction surface area can be increased, resulting in improved battery efficiency.

In addition, in the present invention, the unit metal is accommodated in the guide and supplied with the automatic and continuous supply of the unit metal by using the load and / or the elasticity of the guide wheel.

Therefore, it is advantageous that a constant battery efficiency can be maintained even after the use period has elapsed, and a configuration for reuse reduction can be added to more efficiently supply the material metal.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a view showing an embodiment of a metal anode structure of a metal air battery electrode structure according to the present invention; FIG.
2 is a schematic view of a unit metal surface-treated with a polymer, CNT, Graphene or the like in a metal-air battery according to the present invention.
3 is a view illustrating a configuration for supplying a unitary metal in a metal anode structure of a metal-air battery according to an embodiment of the present invention.
4 is a view showing another embodiment of a configuration for supplying a unitary metal in a metal anode structure of a metal-air battery according to the present invention.
5 is a view showing another embodiment of a configuration for supplying a unitary metal in a metal anode structure of a metal-air battery according to the present invention.
6 is a view showing another embodiment of a configuration for supplying a unitary metal in a metal anode structure of a metal-air battery according to the present invention.
7 is a view illustrating an embodiment of a lift for reuse of a unitary metal in a metal anode structure of a metal-air battery according to the present invention.
8 is a schematic view of a one-port type battery structure in which a metal anode and a metal cathode are formed as a single layer in an electrode structure of a metal-air battery according to the present invention.
FIG. 9 is a photograph of a metal air battery constructed by the schematic view of FIG. 8; FIG.
FIG. 10A is a view for explaining a process of forming an embodiment of a metal anode structure as a main component of the present invention; FIG.
FIG. 10B is a view for explaining a process of forming an air cathode structure according to an embodiment of the present invention. FIG.
11 is a scanning electron micrograph of graphene used as an air cathode in a metal battery according to the present invention.
12 is a scanning electron micrograph of an aluminum foil used as a metal anode in a metal battery according to the present invention.
13 is a schematic view showing another embodiment in which a unitary metal of a metal anode structure, which is a main component of a metal-air battery according to the present invention, is assembled.
Fig. 14 is a photograph showing the actual operation of the single-cell metal-air battery of the embodiment shown in Figs. 8 and 9. Fig.
Fig. 15 is a photograph showing the actual operation of the dual-cell metal-air battery of the embodiment shown in Figs. 8 and 9. Fig.
FIGS. 16 and 17 are photographs showing the actual operation for showing the on / off state of the metal-air battery shown in FIG. 15. FIG.
18 is a schematic diagram showing a teabag embodiment of a metal-air battery electrode structure according to the present invention.
FIG. 19 is a photograph of a card-shaped embodiment of a metal-air battery electrode structure according to the present invention in comparison with a physical card. FIG.
FIG. 20 is a photograph showing the actual operation for showing the on / off state of the embodiment of FIG. 19;
FIG. 21 is a photograph of the actual operation for showing stability and flexibility of power supply of the metal air battery electrode structure in the embodiment of FIG. 19;
FIG. 22 is a photograph showing an internal configuration in which the embodiment of FIG. 19 is configured as a quad-cell. FIG.
FIG. 23 is a photograph showing a manufacturing process of the embodiment shown in FIG. 22; FIG.
FIG. 24 is a photograph showing an actual operation for showing the on / off state of the metal-air battery manufactured according to the manufacturing process shown in FIG.
25 is a schematic view of a flexible sheet type in which a plurality of single cells are arranged as another embodiment of the metal-air battery according to the present invention.
26A is a schematic view of a magic bracelet type in which a plurality of single cells are arranged according to yet another embodiment of the metal-air battery according to the present invention.
FIG. 26B is a schematic view of a coffee sleeve in which a plurality of single cells are arranged as another embodiment of the metal-air battery according to the present invention; FIG.
FIG. 27 is a schematic view of a coffee press structure in which an electrolyte is pressurized and can be operated as a unitary metal in a channel according to another embodiment of the metal air battery electrode structure according to the present invention. FIG.
28 is a schematic view showing another embodiment of a unitary metal accommodating in a channel in the embodiment of FIG. 27;

Hereinafter, specific embodiments of the present invention will be described with reference to the drawings. It is to be understood, however, that the spirit of the invention is not limited to the embodiments shown and that those skilled in the art, upon reading and understanding the spirit of the invention, may easily suggest other embodiments within the scope of the same concept.

FIG. 1 is a view showing an embodiment of a metal anode structure of a metal air battery electrode structure according to the present invention.

The metal air battery according to the present invention includes a metal anode structure 100, an air cathode structure 200, and an air cathode structure 200 between the metal anode structure 100 and the air cathode structure 200 And a polymer electrolyte contained in the polymer electrolyte membrane.

Specifically, the metal anode structure 100 includes a plurality of unit metals 110 formed in a solid or polyhedral shape or in the form of a disk or a polygonal plate.

The unitary metal 110 formed as described above is guided into the case 310 in which the polymer electrolyte is accommodated.

When the connector is connected, the power supply circuit may be used as a positive terminal of the battery power source. In order to guide a plurality of unit metals 110 into the case 310, Or more of the slope 122 and the channel 140.

The accommodating portion 120 provides a receiving space for accommodating a plurality of unitary metals 110. The inclined surface 122 guides the moving direction of the unitary metal 110 while being moved by the load.

The channel 140 extends downward from the lower side of the inclined surface 122 and is located in the inner space of the case 310 and is spaced apart from the case 310 in a number corresponding to the shape of the case 310 .

A plurality of holes 142 are formed in the channel 140 so as to more efficiently react with the unitary metal 110 guided by the high-voltage or electrolyte within the case 310.

In addition, the channel 140 is formed to have a smaller cross-sectional area from the upper side to the lower side, and reacts with the polymer electrolyte to guide the unit metal 110 downward while being reduced in volume.

As shown in the figure, the case 310 according to the present invention can be divided into a plurality of spaces to accommodate the polymer electrolyte, and an air flow path 312 is formed between the divided spaces of the case 310 do.

Meanwhile, an air cathode structure 200 including a carbon nanotube (CNT) or a graphene is provided in the case 310 having a space formed as described above.

The air cathode structure 200 may include at least a portion corresponding to a mounting position of the air cathode structure 200 and may be formed of an air permeable material. And may be deposited and installed in the corresponding portion.

For example, the air cathode structure 200 may be formed by depositing graphene, which is surface-treated with iron oxide and gold nanoparticles, through an external magnetic field on the surface of the case of the air permeable material. The air cathode structure 200 formed as described above allows external air to flow into the case 310 through the air channel 312 to react with oxygen, thereby generating electricity.

If a plurality of cathode structures 200 are provided in the case 310, they may be connected to each other using a bridge 220.

The polymer electrolyte may be contained in the case 310 as a solution electrolyte 320 or may be a gel electrolyte 330 as described below. In this embodiment, the solution electrolyte 320 ), And can be filled with water.

The unitary metal 110, which has been reacted with the polymer electrolyte while passing through the channel 140, may be collected by the collecting unit 410 provided at the lower side.

The collecting unit 410 may be formed to cover all of the plurality of channels 140 and may collect the unit metal 110 falling down from the respective channels 140 at the same time. May be reused after removing the oxide film.

FIG. 2 is a schematic view of a unitary metal surface-treated with a polymer, CNT, Graphene or the like in the metal-air battery according to the present invention.

That is, in the present invention, as shown in FIG. 2, the unit metal layer 110 may be formed of aluminum (Al) balls and a coating layer may be formed on the surface of the unit metal layer 110 to reduce oxide film formation.

The coating layer may be formed using a carbon paint or a polymeric metal paint having a viscosity and electrical conductivity on the surface of the unitary metal 110. A plurality of pores 113 are formed for the purpose of reactivity to form an ion channel ).

FIG. 3 is a view showing an embodiment of a configuration for supplying a unitary metal in a metal anode structure of a metal-air battery according to the present invention.

1, a unitary metal 110 is disposed along the slope 124 to the case 310 in which the solution electrolyte 320 is accommodated in the accommodating portion 120. In this case, It can be rolled and guided.

That is, in the present embodiment, when the installation position of the metal anode structure 100 is easier to utilize the space in the left-right direction than the up-and-down direction, the unit metal rolled along the slope 124 in a form The movement is guided by a plurality of wheels provided and a movable belt 164 rotatably provided by the wheel.

In detail, the slope 124 is provided so as to have a downward slope between the accommodating portion 120 and the case 310, and a lower end thereof is positioned above the case 310.

The unit metal 110 rolled down along the slope 124 is inserted into the case 310 and seated on the movable belt 164 horizontally long inside the case 310.

In this embodiment, a spring power wheel 162 for generating a rotational force after elastic compression is provided at one end of the movable belt 164, And a fan 166 for rotating the fluid at the other end to force the fluid to flow.

Accordingly, when a rotational force is generated by the spring power wheel 162, the movable belt 164 rotates in one direction to guide the unitary metal 110, which is introduced upward, in one direction, and the unit metal 110 ) Reacts with oxygen inside the electrolyte solution 320.

For this, at least a portion of the case 310 is formed of an air permeable material as described above, and the air cathode structure 200 is deposited on the corresponding portion.

Although not shown, the spring power wheel 162 may further include an outer rotatable handle for elastically compressing the unit wheel 110. The unit wheel 110 guided by the movable belt 164 may be provided at one side of the spring power wheel 162, And a slope for guiding the signal to the display unit 410.

The movable belt 164 may be rotated by the unitary metal 110 without the spring power wheel 162.

4 is a view showing another embodiment of the configuration for supplying the unitary metal in the metal anode structure of the metal-air battery according to the present invention.

Referring to the drawings, in the present embodiment, the movable belt 164 is provided with a downward inclination, and a fan 166 is provided at both ends of the movable belt 164.

A groove or a through hole 164 '(see FIG. 5) is formed in the movable belt 164 so that the unit metal 110 injected by the slope 124 is stably mounted, And the fan 166 rotates together with the movable belt 164 by the load of the fan.

The fan 166 discharges the hydrogen gas generated by the oxidation-reduction reaction while rotating.

FIG. 5 is a view showing another embodiment of the configuration for supplying the unitary metal in the metal anode structure of the metal-air battery according to the present invention.

Referring to the drawings, in the present embodiment, a slope 122 is formed on both right and left sides of the receiving part 120, and a U-shaped channel 140 is formed below the slope 122, respectively.

The U-shaped channel 140 is formed to have a width corresponding to the diameter of the unitary metal 110 by the movable belt 164, the spring power wheel 162 and the fan 166, The end of the U-shaped channel 140 is guided to the collecting part 410 so that the unit metal 110 passing through the U-shaped channel 140 can be collected

Therefore, in this embodiment, the unit metal 110 can move more smoothly due to the load of the unitary metal 110 and the rotational force of the spring power wheel 162. In the movable belt 164, May be formed to assist the upward movement of the unitary metal 110.

The case 310 in which the U-shaped channel 140 is accommodated is formed with an air flow path 312 at a central portion thereof and the case 310 having the air flow path 312 is formed with the air cathode structure 200 Are deposited and connected through the bridge 220. The bridge 220 may be formed of brass wire.

6 is a view showing another embodiment of a configuration for supplying a unitary metal in a metal anode structure of a metal-air battery according to the present invention.

The unit metal 110 guided along the inclined surface 122 at the right and left lower ends of the accommodating portion 120 is guided to the collecting portion 410 via the inside of the case 310 by the movable belt 140 .

In detail, in this embodiment, unlike the above-described embodiments, the channel 140 is formed only to the extent that the channel is not formed downward from the lower end of the inclined surface 122, or is located on the upper side of the case 310.

A pair of movable belts 164 are formed inside the case 310 at positions corresponding to the channels 140 to form a path spaced by a width corresponding to the diameter of the unitary metal 110.

At least one movable belt 164 is provided with a spring power wheel 162, and the remaining portion is provided with a fan or a simple rotating guide wheel 161.

Meanwhile, in the above-described embodiments, the unit metal 110 collected in the collecting unit 410 after the reaction can be guided for reuse.

FIG. 7 is a view showing an embodiment of a lift for reusing unit metals in a metal anode structure of a metal-air battery according to the present invention.

Referring to the drawing, the lift includes an inclined portion 412 for guiding downward the unit metal 110 after the reaction in the collecting portion 410, and a unit metal 110 guided along the inclined portion 412 And a lift wheel 460 for rotating the lift belt 440. The lifting belt 440 includes a lifting unit 440 for lifting the lifting unit 440 to the upper side,

In detail, the lift belt 440 includes a plurality of pits 442 which are inclined upward at the lower end of the inclined portion 412 and extend to the upper end of the receiving portion 120 and are formed at regular intervals.

The pits 442 may be recessed or perforated, and the unit metal 110 transferred to the lift belt 440 may be seated and guided upward.

The lift wheel 460 provided at at least one side of both ends of the lift belt 440 has the same configuration as the spring power wheel.

The lift belt 440 is rotated by the rotational force of the lift wheel 460 and the unit metal 110 received in the collecting part 410 can be transferred to the receiving part 120 again.

FIG. 8 is a schematic view of a one-port type battery structure in which a metal anode and a metal cathode are formed as a single layer in an electrode structure of a metal-air battery according to the present invention. 10A is a view for explaining a process of forming an embodiment of a metal anode structure which is a main component of the present invention, and FIG. 10B is a cross- Fig. 5 is a view for explaining a process of forming an embodiment of the air cathode structure as a constitution.

11 is a scanning electron micrograph of graphene used as an air cathode in a metal battery according to the present invention. FIG. 12 shows a scanning electron microscope (SEM) image of an aluminum foil used as a metal anode in a metal battery according to the present invention. The picture is shown.

Referring to these drawings and photographs, in another embodiment of the present invention, a bottom surface 610 of a container-shaped air-permeable case 600 having a top opened for a one-pot type battery is provided with a metal anode structure (100) and the air cathode structure (200) are formed to form a single layer.

In detail, in this embodiment, the unitary metal 110 constituting the metal anode structure 100 is formed in the shape of a metal disk so that a plurality of metal plates are laminated or connected, 13), and is disposed on the bottom surface 610 of the air-permeable case 600.

In addition, the metal anode structure 100 may be formed using a sandblasted aluminum foil 115. That is, as shown in FIG. 12, the surface of the aluminum foil 115 observed through the scanning electron microscope is confirmed to be a rough surface after the sandblast treatment, thereby increasing the surface area.

Accordingly, in this embodiment, the aluminum foil 115 is sandblasted to increase the surface area, and the aluminum foil 115 is formed into a plurality of aluminum discs 115 'by punching. Then, a plurality of aluminum original plates 115 'molded as described above are adhered to the aluminum original plate assembly 115 " by using a viscous and conductive adhesive means 119 (see Fig. 13), that is, a polymer, a carbon paint, .

The metal anode structure 100 is formed by connecting a connector 116 to one side of the aluminum disc assembly 115 'formed as described above to collect electric charges.

Meanwhile, in the present embodiment, the air cathode structure 200 may be formed by using graphene or carbon nanotube (CNT), which is surface-treated with iron oxide and gold nanoparticles, as a negative electrode material, 600 through a magnetophoresis method.

That is, since iron oxide is magnetized in the case of iron oxide, the carbon structure treated with iron oxide can also be induced to precipitate and accumulate by the external magnetic field 650, and the electric conductivity of the air cathode structure 200 can be controlled by the surface- Can be improved.

As shown in FIG. 11, in the case of the carbon nanostructure according to the present invention, two kinds of nanoparticles were observed on a flake. Relatively small nanoparticles represent iron oxide nanoparticles, while relatively large particles represent gold nanoparticles.

Generally, on the surface of metal nanoparticles, electron cloud forms known as plasmons exist, so when observed with a scanning electron microscope, they are observed as very bright white particles.

On the other hand, since the iron oxide nanoparticles are in a ceramic form, they are displayed darker than the metal nanoparticles, so that the nanoparticles can be easily distinguished through a scanning electron microscope as shown in FIG.

It is confirmed that, in the case of the graphene sheet, the pancake is stacked in the form of a pancake in which the space is selectively precipitated by the magnet due to the magnetic properties of the iron oxide.

In such a structure, the graphene pie electron cloud and the electron cloud of gold nanoparticles have the ability to capture aluminum cations ejected from the anode. In addition, since benzoic acid having three hydroxyl groups (OH-) is coated on the surface of the iron oxide magnetic nanoparticles, it is expected that aluminum hydroxide can be captured by this hydroxyl group.

Accordingly, in this embodiment, by using graphene or carbon nanotubes, it is possible to form a structure such as a plurality of pancakes in which a carbon structure is stacked, and a pie-electron cloud existing on the surface of the carbon structure and plasmons of gold nanoparticles Metal ions (Al ions) coming from the metal anode structure 100 are interposed between the layers and the layers due to the heat generated from the metal cathode structures 100 and the like, and the intercalation effect can be expected.

When the metal anode structure 100 and the air cathode structure 200 are formed on the bottom surface 610 of the air permeable case 600 as described above, the solution or the gel electrolyte is filled in order to operate the battery.

The gel electrolyte 330 is filled with a metal oxide, an antioxidant, and a hydroxyl group (OH-OH) to form the gel electrolyte 330. The gel electrolyte 330 is filled with the gel electrolyte 330 to cover both the metal anode structure 100 and the air cathode structure 200, ) Were manufactured using many materials.

For example, a surface treatment of iron oxide, sodium hydroxide, sodium citrate or the like is dissolved in water to form a liquid electrolyte, and a PEO (polyethylene oxide) additive is added to the liquid electrolyte to form a polymer electrolyte .

When the metal anode structure 100 is formed of an aluminum (Al) material as in the present embodiment, the polymer electrolyte may include a material having a lower metal ionization tendency than the aluminum (Al) (Fe), nickel (Ni), tin, lead (Pb), copper (Cu), or the like) to the electrolyte to induce ionization in the metal anode structure 100 more effectively.

Since the space between the metal anode structure 100 and the air cathode structure 200 serves as a separator, a separate separator is attached to the metal cathode structure 100 The manufacturing and assembling process can be simplified as compared with a battery having a multi-layer structure.

In addition to the above-described embodiments, the metal anode structure 100 may have various embodiments.

13 is a schematic view showing another embodiment in which the unitary metal of the metal anode structure, which is the essential part of the metal-air battery according to the present invention, is assembled.

Referring to the drawings, a plurality of aluminum balls 111 are formed in a grape shape to form a metal anode structure 100 in this embodiment.

Bonding means 119 are provided between the respective aluminum balls 111 for this purpose.

Specifically, the adhesion means 119 can be made of a carbon paint or a polymer or metal paint having a viscosity and an electric conductivity.

That is, the bonding means 119 performs a function of bonding while performing a bridge function to allow electric charge to flow between the respective aluminum balls 111, and is also utilized when connecting the connector 116 for charge collection .

FIG. 14 is a photograph showing an actual operation of the single-cell metal-air battery of the embodiment shown in FIGS. 8 and 9. FIG. 15 shows a dual-cell metal air battery of the embodiment shown in FIG. 8 and FIG. And FIG. 16 and FIG. 17 are photographs showing actual operations for showing the on / off state of the metal-air battery shown in FIG.

These photographs are for explaining the operation state of the embodiment of the present invention. The metal anode structure 100 and the air cathode structure 200, which form a single layer on the bottom surface 610 of the air- permeable case 600, And the driving voltage was measured.

In the case of the single-cell embodiment shown in FIG. 14, an output voltage of 1.478 V was measured through a tester, and in the case of a dual-cell type embodiment connected in series as shown in FIG. 15, The output voltage of V was measured.

Further, in the case of the dual cell type embodiment, it has been confirmed that each air permeable case 600 can be connected through a bridge 220, such as a brass wire, and the output voltage is lowered as the connection distance becomes larger.

Meanwhile, the electrode structure of the metal air battery according to the present invention may be formed in various embodiments.

18 is a schematic diagram showing a teabag embodiment of the metal-air battery electrode structure according to the present invention.

In this embodiment, a flake-shaped unitary metal is housed in the air-permeable case 600 inside the pouch, and the connector is taken out from the flakes inside the pouch.

A graphene is attached to the outer surface of the air-permeable case 600 to form an air cathode structure 200, and the connector is drawn out to connect the power line.

The pouch-shaped metal-air battery electrode structure formed as described above can be supplied into the water contained in the container to supply the electrolyte, so that it can be highly utilized as a portable power source.

Meanwhile, the metal-air battery according to the present invention can be formed in a more flexible shape.

FIG. 19 is a photograph of a real card for comparing a card-shaped embodiment of the metal-air battery electrode structure according to the present invention with a physical card, and FIG. 20 is a photograph of a physical action for showing the on / off state of the embodiment of FIG. And FIG. 21 is a photograph showing an actual operation for showing stability and flexibility of power supply of the metal-air battery electrode structure in the embodiment of FIG.

FIG. 22 is a photograph showing an internal structure of the quad-cell of the embodiment of FIG. 19, and FIG. 23 is a photograph of a real object for explaining the manufacturing process of the embodiment shown in FIG. And FIG. 24 is a photograph showing the actual operation for showing the on / off state of the metal air battery manufactured according to the manufacturing process shown in FIG.

Referring to the photographs shown in these figures, in this embodiment, a metal air battery is manufactured by forming an air-permeable case 600 in the form of a card with a small thickness and including a plurality of cells therein.

In detail, in this embodiment, the inner space of the air-permeable case 600 is divided into four spaces, and the metal anode structure 100, the air cathode structure 200 and the gel electrolyte 330 are fixed to the respective spaces A card-shaped metal-air battery having a quad-cell structure connected in series is manufactured by connecting the metal anode structure 100 and the air cathode structure 200 in each space through a bridge 220.

More specifically, in this embodiment, the metal anode structure 100 is formed by stacking the sandblasted aluminum foil in the form of a lump, placing a plurality of the aluminum foil in the inner space of the air-permeable case 600, And an adhesive 119 having viscosity.

Graphene or carbon nanotubes (CNTs), which are surface-treated with iron oxide and gold nanoparticles at the same time, are formed on one side of the metal anode structure 100 formed as described above as a cathode material And then fixed to one side of the metal anode structure 100 to form the air cathode structure 200.

When the metal anode structure 100 and the air cathode structure 200 are fixed to the inner space of the air permeable case 600 as described above, the gel electrolyte 330 is sandwiched between the metal anode structure 100 and the air cathode structure 200, So that each cell is formed in the same shape.

22, a connector for connecting an external power line is connected to two cells located on the upper side, and a bridge 220 is connected in series between each cell. Respectively.

Specifically, in the cell located at the upper left corner of FIG. 22, a connector is connected for connection of an external power line in the metal anode structure 100. The air cathode structure 200 connected to the gel electrolyte 330 is further provided with a bridge 220 connected to the metal anode structure of the cell located at the lower left end.

In the air cathode structure 200, another bridge connected to the metal anode structure of the lower right cell is connected to the lower anode cell through the bridge 220 drawn from the upper left corner of the metal anode structure 100, In the right upper cell, a connector for connecting an external power source is further connected to the cell in the right lower end and the cell in the right upper end.

Therefore, the card-shaped metal air battery configured as described above can generate a higher output voltage (3.43 V) as shown in FIG.

In addition, since the stable output voltage can be generated even when the air-permeable case 600 is folded in half, the power supply can be provided in a more stable and flexible form.

Meanwhile, the shape of such a flexible metal-air battery can be formed in various shapes.

FIG. 25 is a schematic view of a flexible sheet type in which a plurality of single cells are arranged as another embodiment of the metal-air battery according to the present invention.

Referring to the drawings, in the present embodiment, a metal anode structure 100 is formed on an upper surface of an air-permeable sheet 600 so as to have a closed curve surrounding the air cathode structure 200, The gel electrolyte 330 is filled to form a plurality of unit cells at regular intervals.

On the other hand, in the case of forming as described above, the output voltage can be varied according to the arrangement of connecting the plurality of unit cells arranged.

That is, a higher output voltage may be generated depending on the number of series connection of each unit cell, and the use time of the battery may be further increased than when the unit cells are connected in parallel.

Meanwhile, FIG. 26A is a schematic view of a magic bracelet type in which a plurality of single cells are arranged as another embodiment of the metal air battery according to the present invention.

25, the metal anode structure 100, the air cathode structure 200 and the gel electrolyte 330 form a unit cell, and the air permeable case 600 is formed in a sheet form do.

Here, the sheet-like air-permeable case 600 is formed as a bracelet including an elastic material and wound in an initial shape, and is formed so as to be formed with a predetermined interval of slits.

Therefore, when the sheet-like air-permeable case 600 is spread as a whole, it can be shown as a bar shape as shown in FIG. 26A, and when it is gripped at one side and pulled down toward the wrist, it can be bent into a bracelet shape while being bent along the slit .

The metal-air battery having such a structure has an advantage that it can be used for a toy or a portable device.

Meanwhile, FIG. 26B is a schematic view of a coffee sleeve in which a plurality of single cells are arranged according to another embodiment of the metal-air battery according to the present invention.

25, the metal anode structure 100, the air cathode structure 200, and the gel electrolyte 330 form a unit cell, and the air permeable case 600 is formed in the same manner as in the embodiment of FIG. Is formed in a sheet form.

However, in this embodiment, the air-permeable sheet 600 may be formed in the shape of a coffee sleeve so as to cover the surface of the structure and supply power to the structure. If necessary, the connection structure of the bridge may be varied, Can be designed and used.

Meanwhile, FIG. 27 is a schematic diagram of a coffee press structure in which an electrolyte is pressurized and can be operated as a unitary metal in a channel according to another embodiment of the metal air battery electrode structure according to the present invention.

In this embodiment, when the liquid-state electrolyte is charged while the air-permeable case 600 is being pressed, an electrode reaction occurs to drive the battery,

And can be utilized as a power source for a structure operated in a pressurized manner.

To this end, in this embodiment, a liquid electrolyte is supplied to a channel formed inside the air-permeable case 600 by a pressing process outside the air-permeable case 600, and the supplied liquid electrolyte is supplied to the unit metal 110 And electricity is generated by an electrode reaction.

The electricity generated as described above may be output through the connector of the air cathode structure 200 provided at the upper end of the air permeable case 600 and the connector of the metal anode structure 100 provided at the lower end.

In other words, the battery of the present embodiment maintains the standby state due to no supply of the electrolyte when the pressurized state is not generated, and generates an electrode reaction in which the liquid electrolyte is supplied by the external pressurization, thereby generating electricity.

Meanwhile, in the above structure, the shape of the unitary metal 110 may be more variously formed.

Fig. 28 is a schematic diagram showing another embodiment of the unitary metal that can be accommodated in the channel in the embodiment 27. Fig.

As shown in the figure, the unitary metal 110 accommodated in the air permeable case 600 may be shaped like a solid cheese so as to have a wider contact area with the charged liquid electrolyte. Although not shown, the unitary metal 110 may be formed in the form of a sponge or a foam. When the liquid electrolyte is supplied by external pressurization, electricity is generated through the electrode reaction.

100 ........ Metal anode structure 110 ........ Unit metal
111 Aluminum balls 112 Anti-oxidation coatings
113 ......... Pore 115 ........ Aluminum foil
115 '...... aluminum plate 115' ...... aluminum plate cluster
116 ......... connector 117 ........ aluminum foam
119: Adhesive means 120:
122 ....... slope 124 ....... slope
140 ........ channel 142 ........ hole
161 ........ Guide wheel 162 ........ Spring power wheel
164 ......... movable belt 164 '...... through hole
166 Fan 200 Air cathode structure
210 ........ graphene ion solution 220 ........ bridge
310: Case 312:
320 ......... solution electrolyte 330 ......... gel electrolyte
410 collecting part 412 inclined part
420 ........ lift fan 440 ........ lift belt
442 ........ pit 460 ........ lift wheel
600: air permeable case 610: bottom surface

Claims (12)

A metal anode structure comprising a unitary metal formed in a spherical or polyhedral shape or in a disk or polygonal plate shape and in which a plurality of units are in contact with each other;
An air cathode structure including a carbon nanotube (CNT) or a graphene;
And a solution or gel-type polymer electrolyte provided between the metal anode structure and the air cathode structure,
Wherein the air cathode structure is provided on at least a part of the surface of the case in which the metal anode structure is accommodated.
The method according to claim 1,
Wherein the unitary metal is coated on at least a part of the surface with an adhesive means having electrical conductivity.

A metal anode structure formed so that a plurality of unit metals made of spheres or polyhedrons or discs or polygonal plates are in contact with each other,
And an air cathode structure formed by depositing iron oxide on the surface of the air permeable case through an external magnetic field and graphene having surface treated with gold nanoparticles.
The method as claimed in claim 3, wherein, in the metal anode structure,
And a guide for receiving the unitary metal and guiding the received unitary metal to a reaction liquid for a chemical reaction.
5. The apparatus according to claim 4,
An accommodating portion formed on the upper side and providing a receiving space for the unitary metal;
An inclined portion formed on the lower side of the accommodating portion and guiding the unit metal falling by its own weight to the reaction liquid, and a channel extending downward from the inclined portion,
Wherein the channel has a smaller cross-sectional area from the upper side to the lower side.
5. The apparatus according to claim 4,
Wherein at least one guide wheel and a movable belt for unidirectional transfer of the unitary metal are included.
The method according to claim 6,
Wherein a part of the guide wheel is constituted by a rotary fan for forcing the flow of the fluid and is connected to another guide wheel and rotated by the movable belt.
7. The method according to claim 6 or 7,
And a collecting part for collecting the unitary metal passing through the case is further provided on one side of the guide,
Wherein the guide wheel and the movable belt are provided on one side of the case.
9. The method of claim 8,
Further comprising a lift for transferring the unitary metal in one direction for reuse of the collected unitary metal in one side of the collecting part.
The method of claim 3,
Wherein the unit metal is formed into a spherical shape or a polyhedral shape so as to include a plurality of pores, thereby increasing the surface area thereof.
A metal anode structure having a plurality of unit metals made of spheres, polyhedrons or discs or polygonal plates;
An air permeable case surrounding the metal anode structure;
An air cathode structure including a carbon nanotube (CNT) or a graphene provided on the surface of the air permeable case; And
And a polymer electrolyte in the form of a solution or a gel filled between the metal anode structure and the air cathode structure.
A metal anode structure including a plurality of unit metals made of spheres or polyhedrons or disks or polygonal plates;
An air permeable case in which the plurality of unit metals are arranged at a predetermined interval;
An air cathode structure including a carbon nanotube (CNT) or a graphene, the air cathode structure having a one-to-one correspondence with the unit metal on the surface of the air permeable case on which the unit metal is arranged; And
And a gel-type polymer electrolyte accommodated in the air-permeable case and positioned between the metal anode structure and the air cathode structure,
Wherein the spaced apart unitary metals are connected to each other through an electrically conductive wire, a carbon paint, a metal paint, or a polymer having adhesiveness and electrical conductivity.

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