JP2013200962A - Lithium ion secondary battery and manufacturing method thereof and equipment using lithium ion secondary battery - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lithium ion secondary battery which can obtain an equal or higher energy density and further exhibits still higher safety than a lithium ion secondary battery whose separator and electrode are formed as an integral body and which uses a conventional separator and electrolyte solution in a normal temperature range, and a method for manufacturing the lithium ion secondary battery.SOLUTION: A concavity is formed on the surface of a porous material, and a cathode material and an anode material are filled in the concavity, whereby short-circuiting by displacement or collapse of the cathode or the anode. Also, by controlling the depth of the concavity and the interval between each concavity, it is possible to bring the distance between the cathode and the anode closer easily than in a battery using a conventional separator, without the risk of causing a short circuit. Therefore, while improving the safety of a battery, it is possible to provide a battery whose energy losses are fewer than in conventional batteries.

Description

  The present invention relates to a lithium ion secondary battery, a method for manufacturing the same, and a device using the lithium ion secondary battery.

Lithium ion secondary batteries are superior in light weight and small footprint due to their high energy density, and have the advantage of less memory effect than nickel-cadmium batteries and nickel-hydrogen batteries. Widely used in portable devices such as phones and notebook computers.
Moreover, in recent years, it has been increasingly used as a power source to replace fossil fuels such as oil that have been used in automobiles because of its environmental impact. In addition, recently, there is a high expectation for stationary storage batteries that bear a part of power supply.

  A commonly used lithium ion secondary battery is composed of an electrode, an electrolytic solution, a separator, a current collector, and an exterior body. Further, the electrode includes a positive electrode active material, a negative electrode active material, and a conductive additive. It is composed of a binder. Hereinafter, a mixture of these constituent materials at a predetermined mixing ratio is collectively referred to as a positive electrode material and a negative electrode material, and a positive electrode material and a negative electrode material are collectively referred to as an electrode material.

The active material is a material capable of inserting and removing lithium ions in the positive electrode and the negative electrode of a lithium ion secondary battery, and plays a role of flowing current by accompanying the exchange of electrons during insertion and desorption. Examples of the positive electrode active material include layered compounds such as LiCoO ₂ and LiNiO ₂ , spinel type structural compounds typified by LiMn ₂ O _4, and olivine type structural compounds typified by LiFePO ₄ .

On the other hand, representative examples of the negative electrode active material include carbon-based materials such as spherical graphite, flaky graphite, and hard carbon, silicon-based materials, and titanium oxide-based materials such as Li ₄ Ti ₅ O _12. .
The conductive aid is disposed inside the electrode in order to smoothly move electrons between the active material and the active material and between the active material and the current collector. Examples of the conductive aid include conductive carbon-based materials.

The binder is disposed inside the electrode in order to enhance adhesion between the active material, the conductive additive, and the current collector. The types of the binder are largely divided into those using an aqueous solvent and those using a non-aqueous solvent, and representative examples thereof include styrene butadiene rubber and polyvinylidene fluoride.
The current collector plays a role in generating an electric current in the circuit by giving and receiving the movement of electrons when lithium ions are inserted into and desorbed from the active material to the active material or the conductive auxiliary agent.

As the outer package, two types of metal cans and aluminum laminate films are mainly used for the purpose of preventing electrolyte leakage and protecting a lithium ion secondary battery that is sensitive to moisture from the outside air. As the outer package, an aluminum laminate film is particularly advantageous because it has good heat dissipation and a high degree of freedom in shape.
The separator is disposed between the positive electrode and the negative electrode for the purpose of preventing a short circuit of the battery due to the contact between the positive electrode and the negative electrode, and the electrolyte is held therein so that lithium ions can pass therethrough. A porous material is used. Generally, separators having a porosity of about 30% to 50% are used. Furthermore, it must be formed of a material that is resistant to the electrolyte. As such a separator material, a polyolefin-based material such as polyethylene or polypropylene is used.

  The general thickness of the separator used for the lithium ion secondary battery currently marketed is about 20 micrometers-about 40 micrometers. When the thickness of the separator is too thin, the positive electrode and the negative electrode come into contact with each other through holes in the separator, causing a short circuit of the battery. On the other hand, if the separator is too thick, the distance between the positive electrode and the negative electrode will be widened, and the distance of lithium ion movement associated with charging / discharging will become longer. It leads to.

In addition, if a short circuit occurs inside the battery, heat generated due to a large local current between the positive electrode and the negative electrode may cause a risk of decomposition of the electrolyte or electrode, ignition of the battery, and heat generation. When a short circuit occurs via the separator, a device or design has been made to block the short circuit by closing the pores of the separator as the heat is generated.
Furthermore, in the case of a stack type battery in which several single cells are stacked in series or in parallel in one exterior material package, direct contact between the batteries other than the part where the current collectors between the single cells are gathered by lead tabs is made. It is also used to prevent. On the other hand, in the case of a wound battery in which a single cell is wound and sealed in an exterior material package, the current collector on the positive electrode side is not only on the surface facing the positive electrode and the negative electrode but also on the negative electrode side when the electrode is wound. A separator is also used on the back surface of the positive electrode or negative electrode (the surface on which the current collector is exposed) so as not to contact the current collector.

In this way, the separator is mainly used to prevent short circuit and electrolyte solution retention inside the battery, and to prevent heat generation and ignition when the battery is short circuited. The functions required of the separator are thinness, liquid retention, and electrolyte resistance. Various functions such as proper porosity, heat resistance, and shutdown function during abnormal heating inside the battery.
However, the separator and the electrode, which have an important role in the battery, are formed separately, and the members are overlapped when the battery is manufactured, which involves a risk of short-circuiting due to misalignment of the members inside the battery.

In order to solve such a problem, in Patent Document 1, a positive electrode and a negative electrode material are configured so as not to contact each other on the same plane of the same substrate, and a battery is used without using a separator by pouring an electrolyte between them. A technique for manufacturing the is disclosed.
Furthermore, as a safe battery manufacturing method that does not use a separator, Patent Document 2 and Patent Document 3 disclose a solid battery that uses an inorganic or organic solid material having a separator function and lithium ion conductivity as a solid electrolyte. Manufacturing methods have been proposed.

Japanese Patent Publication No. 6-90934 Japanese Examined Patent Publication No. 4-070746 JP-A-8-203482

However, in the technique disclosed in Patent Document 1, since an electrode structure is formed on a flat substrate, when the electrode structure collapses, the positive electrode and the negative electrode are brought into contact with each other, and abnormal heat is generated when the contact is made. Since there is no function to prevent this, it is dangerous.
Further, in the solid state batteries disclosed in Patent Document 2 and Patent Document 3, the resistance of lithium ion movement in the solid electrolyte or at the interface between the solid electrolyte and the active material is large, and battery energy is lost when a large current is passed. Connected. In addition, since both the active material and the electrolyte are formed of a solid, the contact between the two is worse than the conventional contact between the liquid and the solid, and the path for conducting lithium ions is limited.

  The present invention has been made in view of such circumstances, and the purpose thereof is that a separator and an electrode are integrally formed, and an energy density equal to or higher than that of a conventional lithium ion secondary battery can be obtained even in a normal temperature range. Another object of the present invention is to provide a lithium ion secondary battery having a higher level of safety, a method for manufacturing the same, and a device using the lithium ion secondary battery. Another object is to provide a device with improved operational reliability.

The method for manufacturing a lithium ion secondary battery according to the present invention for solving the above-described problem includes a first step of providing a plurality of recesses on at least one surface of a substrate,
A second step of filling the recess with at least a pair of a positive electrode material and a negative electrode material;
A third step of forming a current collecting layer on the surfaces of the positive electrode material and the negative electrode material;
A fourth step of impregnating the electrolytic solution with the formed body formed by the first step to the third step;
And a fifth step of sealing the formed body impregnated with the electrolytic solution in the fourth step with an exterior material so that a part of the current collecting layer is exposed to the outside.

Moreover, in the manufacturing method of the lithium ion secondary battery which concerns on this invention, it is preferable that the said board | substrate is a porous material.
In the method for producing a lithium ion secondary battery according to the present invention, the substrate is preferably a polyolefin material.
In the method for producing a lithium ion secondary battery according to the present invention, the recess is preferably formed by any one of machining, chemical processing, thermal processing, laser processing, or a combination thereof.

Moreover, in the manufacturing method of the lithium ion secondary battery which concerns on this invention, it is preferable to fill the said recessed part with the printing method containing the said positive electrode material and negative electrode material including the inkjet method and the die-coating method.
Further, in the method for producing a lithium ion secondary battery according to the present invention, the current collecting layer is formed by any one of a vapor deposition method, a thin film forming method including a sputtering method, or a printing method including an ink jet method and a die coating method, or the method thereof. It is preferable to form by combination.

Moreover, the lithium ion secondary battery which concerns on this invention for solving the said subject was manufactured with the manufacturing method of the said lithium ion secondary battery, It is characterized by the above-mentioned.
Moreover, the apparatus which concerns on this invention for solving the said subject operate | moves using the said lithium ion secondary battery as a power supply or a motive power source, It is characterized by the above-mentioned.

  According to the present invention, a recess is provided on the surface of the porous material, and the recess is filled with the positive electrode material and the negative electrode material, thereby preventing a short circuit due to misalignment or collapse of the positive electrode and the negative electrode. Further, by controlling the depth and interval of the recesses, it is possible to easily bring the distance between the positive electrode and the negative electrode closer to each other without the risk of a short circuit as compared with a conventional lithium ion secondary battery. For this reason, it is possible to provide a lithium ion secondary battery with less energy loss as compared with conventional lithium ion secondary batteries while improving the safety of the lithium ion secondary battery. In addition, the device of the present invention operates with the lithium ion secondary battery as a power source or a power source, thereby improving the operation reliability.

It is sectional drawing which shows the process in one Embodiment of the manufacturing method of the lithium ion secondary battery which concerns on this invention, (a) And (b) is a 1st process, (c) is a 2nd process, (d) is a 1st process. Three steps, (e) is the fourth step, and (f) is the fifth step. It is a perspective view which shows the process in one Embodiment of the manufacturing method of the lithium ion secondary battery which concerns on this invention, (a) And (b) is a 1st process, (c) is a 2nd process, (d) is a 1st process. Three steps, (e) is the fourth step, and (f) is the fifth step. It is a top view which shows the example of the shape of the recessed part formed on the board | substrate in one Embodiment of the manufacturing method of the lithium ion secondary battery which concerns on this invention.

DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, an embodiment of a lithium ion secondary battery, a method for producing the same, and a device using the lithium ion secondary battery according to the invention will be described in detail with reference to the drawings.
(Method for producing lithium ion secondary battery)
The method for manufacturing a lithium ion secondary battery of the present embodiment includes a first step of providing a recess on a surface on a substrate, a second step of filling a positive electrode material and a negative electrode material, and a third step of forming a current collecting layer. And a fourth step of impregnating the electrolytic solution and a fifth step of sealing the formed body with an exterior material.

<First step>
First, as shown in FIGS. 1 (a) and 2 (a), a substrate 10 is prepared, and the recess 11 is processed as shown in FIGS. 1 (b) and 2 (b). In this embodiment, two concave portions 11 and 11 are formed on one surface 10a of the substrate 10 with a predetermined interval, and one surface 10a is formed on the other surface 10b opposite to the one surface 10a. A description will be given of an embodiment (see FIG. 3B) in which the concave portions 11, 11 are formed at positions corresponding to the two concave portions 11, 11 formed in FIG.

[Substrate material]
The material of the substrate 10 is not particularly limited as long as it can be impregnated with the electrolytic solution. For example, a porous material is preferably used. By using the porous material, the electrolyte solution retention of the substrate 10 is improved, and the ion movement between the positive electrode and the negative electrode becomes smooth, so that the characteristics of the battery can be improved. In particular, it is preferable to use a polyolefin material such as polyethylene or polypropylene. Many polyolefin materials are resistant to battery electrolytes, and are excellent in processability, and have proven results because they are separator materials used in batteries that are already on the market. In addition, the polyolefin material is advantageous in ensuring safety because it melts and closes the pores when abnormal heating occurs inside the battery.

[Shape of recess]
Further, the shape of the recess 11 is not particularly limited, but for example, the shapes as shown in FIGS. 3A to 3C may be used. Specifically, as shown in FIG. 3A, a mode in which a plurality of parallel recesses 11 are formed on the substrate 10 so as to divide the one surface 10 a of the substrate 10 is exemplified. Moreover, the aspect which forms the some recessed part 11 which makes a rectangle as shown in FIG.3 (b) in the one surface 10a of the board | substrate 10 at a matrix form is mentioned. Moreover, the aspect which forms the some recessed part 11 which makes circular as shown in FIG.3 (c) in the one surface 10a of the board | substrate 10 is mentioned.

  As a processing method of the recessed part 11, it can select suitably according to a desired shape and a dimension. For example, a method using a machining technique such as cutting or grinding, a method using a processing technique using a chemical reaction such as a lithography technique or an etching technique, or a method using a thermal processing technique such as injection molding using a mold or the like. In addition, there are laser processing techniques. Among these, a grinding technique that can easily and easily process a fine shape without any trouble is preferable.

  Further, the position and number of the recesses 11 formed in the substrate 10 are not particularly limited. For example, a plurality of recesses 11 can be formed on both surfaces of the substrate 10 as shown in FIG. As described above, by forming the plurality of recesses 11 on both surfaces of the substrate 10, a plurality of battery configurations can be formed in one substrate 10. Thereby, for example, the total amount of the electrode material that can be filled on the substrate 10 is reduced as compared with the case where only one battery configuration is formed on the substrate 10, but depending on the interval at which the recesses 11 are formed, the positive electrode material It is possible to increase the surface area where the negative electrode material and the negative electrode material face each other, and the charge / discharge reaction can proceed smoothly.

<Second step>
Next, as shown in FIG. 1C and FIG. 2C, the concave portion 11 formed on the substrate 10 is filled with a positive electrode material 12 or a negative electrode material 13 as an electrode material.
[Positive electrode material]
The positive electrode material 12 is formed by mixing constituent materials including a positive electrode active material, a conductive additive, and a binder at a predetermined mixing ratio. Of these materials, those appropriately selected according to the solvent species when mixing the positive electrode material, those composed of a desired mixing ratio capable of obtaining battery characteristics can be used. There is no particular limitation.

Examples of the positive electrode active material include LiCoO ₂ , LiNiO ₂ , LiMn ₂ O ₄ , LiFePO ₄ , V ₂ O ₅ , TiO ₂ , etc. What is configured can be used.
In addition, as the conductive aid, for example, spherical carbon typified by acetylene black and ketjen black, fibrous carbon fiber typified by carbon nanofiber, and the like, it contributes to the charge / discharge reaction. Instead, an electrochemically stable material or a combination thereof can be used.
Examples of the binder include polyethylene, polyvinylidene fluoride, styrene butadiene rubber, ethylene butadiene rubber, polytetrafluoroethylene, and epoxy resin.

[Negative electrode material]
The negative electrode material 13 is formed by mixing constituent materials including a negative electrode active material, a conductive additive, and a binder at a predetermined mixing ratio. As for the negative electrode material 13, a material appropriately selected from these materials according to the type of solvent used when mixing the positive electrode material, or a material having a desired mixing ratio that provides battery characteristics is used. There is no particular limitation.

Examples of the negative electrode active material include a material capable of inserting and desorbing lithium including hard carbon, amorphous carbon, graphite, Li ₄ Ti ₅ O ₁₂ , silicon, SiO ₂ , TiO _{2, and the} like, or a combination thereof. What is done.
Examples of the conductive additive and the binder include those composed of the same materials as the conductive additive and the binder used for the positive electrode material or a combination thereof.

Examples of the solvent species for mixing the electrode material include water, water appropriately mixed with carboxymethyl cellulose as a thickener, n-methyl-2-pyrrolidone, acetonitrile, etc., depending on the electrode material It can select suitably and is not specifically limited.
Further, the positions of the electrode materials (the positive electrode material 12 and the negative electrode material 13) to be filled are not particularly limited. For example, as shown in FIG. 1C, the positive electrode material 12 and the negative electrode material 13 are adjacent to each other on one surface 10a. It is preferable to arrange each electrode material on the other surface 10b opposite to the one surface 10a so as to be opposite to the arrangement of the positive electrode material 12 and the negative electrode material 13 on the one surface 10a. is there. As a result, ions can move not only in the A direction shown in FIG. 1C but also in the B direction. As a result, the battery reaction can proceed, and charging and discharging can be performed more efficiently.

[Filling method of electrode material]
The filling method of the positive electrode material 12 and the negative electrode material 13 into the recess 11 can be appropriately selected according to the desired shape and dimensions. For example, an inkjet method, a die coating method, a screen printing method, or the like can be given.
Moreover, in order to fully draw out the performance of the battery, that is, the capacity of the active material, it is preferable that the electrode material is closely packed in the recess 11 without a gap.
Furthermore, since the solvent for mixing the electrode material may interfere with ion movement inside the electrode or cause decomposition at the time of charging or discharging, the electrode material is filled in the recess 11 and then heated and dried to remove the solvent. It is necessary to volatilize and remove.

<Third step>
Next, as shown in FIG. 1D and FIG. 2D, current collecting layers 14 and 15 are formed on the surface portion of the positive electrode material 12 or the negative electrode material 13. The current collecting layers 14 and 15 are formed by a metal thin film forming method such as a vapor deposition method or a sputtering method, or by spin coating, spray coating, screen printing, letterpress printing, intaglio printing, etc. using a mixture of metal powder and binder resin. A printing method applied by a technique can be appropriately used.
The current collecting layers 14 and 15 cover all exposed surfaces of the electrode materials (the positive electrode material 12 and the negative electrode material 13) arranged as described above in order to smoothly move the electrons accompanying the insertion and desorption of lithium ions in the active material. It is important that the current collecting layer 15 formed on the positive electrode material 12 side is not in contact with the current collecting layer 14 formed on the negative electrode material 13 side.

  Furthermore, it is preferable to use a material containing aluminum for the current collecting layer 15 formed on the positive electrode material 12 side, and a material containing copper or nickel is used for the current collecting layer 14 formed on the negative electrode material 13 side. It is preferable to use it. Aluminum is a material that can withstand the potential of the positive electrode, and is used as a positive electrode material for a low-cost general lithium ion secondary battery. On the other hand, copper or nickel is a material that can withstand the potential of the negative electrode and does not form an alloy with lithium. Therefore, copper or nickel is used as a general negative electrode material for lithium ion secondary batteries in the same manner as the positive electrode. Further, a metal plate or a metal foil may be bonded to the current collecting layers 14 and 15 in order to improve the electronic conductivity of the formed current collecting layers 14 and 15 and to enable connection with an external terminal.

<Fourth process>
Next, as shown in FIG. 1E and FIG. 2E, the electrolytic solution 16 is impregnated with the formed body 20 formed in the first to third steps. As the electrolytic solution 16, one used for a general lithium ion secondary battery may be used. For example, a solvent such as ethylene carbonate, propylene carbonate, dimethyl carbonate, diethyl carbonate, ethyl methyl carbonate, or a combination thereof may be combined with LiPF ₆ , LiBF ₄ , LiClO ₄ , LiN (SO ₂ CF ₃ ) ₂ , LiN (SO ₂ C _A solution obtained by dissolving a desired amount of a salt such as ₂ F ₅ ) ₂ , LiCF ₃ SO ₃ or a combination thereof may be used.

<Fifth process>
Next, as shown in FIGS. 1 (f) and 2 (f), the formed body 20 that has undergone the fourth step is sealed with an exterior body 17. Thus, the lithium ion secondary battery of this embodiment is manufactured through the first to fifth steps. As the outer package 17, one used for a general lithium ion secondary battery may be used. More preferably, an aluminum laminate film having a high heat dissipation property and a high degree of freedom in shape may be used as the exterior body 17.

  As described above, according to the lithium ion secondary battery and the manufacturing method thereof of the present embodiment, an energy density equal to or higher than that of a lithium ion secondary battery using a conventional separator and electrolyte is obtained even in a normal temperature range. In addition, a lithium ion secondary battery having higher safety and a method for manufacturing the lithium ion secondary battery are provided. In addition, the operation of the device according to the present embodiment is improved by operating the lithium ion secondary battery as a power source or a power source. In addition, the lithium ion secondary battery of this invention and its manufacturing method are not limited to the said embodiment, The other well-known method which can be estimated in each process shall also be included.

Examples of the lithium ion secondary battery of the present invention and the manufacturing method thereof will be described below.
Example 1
First, a porous polypropylene plate having a thickness of 100 μm and a porosity of 35% was prepared as a substrate.

Next, using a dicing blade, two linear recesses were formed on the surface of the porous polypropylene. The width of the recess was 5 cm, the depth of the recess was 45 μm, and the distance between the recess was 10 μm. Also, two linear recesses were formed on the surface facing the surface at a position facing the surface. The width and depth of the recesses on the back surface and the interval between the recesses and the recesses were the same as those formed on the surface.
Next, the formed recess was filled with a positive electrode material and a negative electrode material. As a filling method, a coating method using a doctor blade was used. At this time, the distance between the doctor blade and the base material was set to 0, and only the concave portion was filled with the electrode material. In the positive electrode material, LiCoO ₂ as an active material, acetylene black as a conductive additive, and polyvinylidene fluoride as a binder were mixed in a ratio of 90: 4: 6, respectively, and n-methyl-2-pyrrolidone was used as a solvent. In the negative electrode material, mesocarbon microbeads as an active material, acetylene black as a conductive additive, and styrene butadiene rubber as a binder are mixed in a ratio of 95: 2: 3, respectively, and water and carboxymethylcellulose are mixed in a ratio of 98: 2. The solvent was used as a solvent.

Next, the solvent was removed by heat drying. As drying conditions, heating was performed at 80 ° C. for 24 hours under reduced pressure. Further, the steps after the heat drying treatment were carried out in a dry room having a dew point temperature of −60 ° C. in order to avoid mixing of moisture into the electrode.
Next, a current collecting layer was formed on the surface of the filled electrode material. For forming the current collecting layer, aluminum powder and epoxy resin are mixed on the positive electrode side, and copper powder and epoxy resin are mixed on the negative electrode side so that the ratio of metal powder and epoxy resin is 90:10, respectively. The material was coated by the bar coat method. At that time, the portion other than the electrode material was masked with a plastic film so that the current collecting layer did not adhere to the portion other than the electrode material. Thereafter, a heat treatment was performed at 60 ° C. for 1 hour in order to cure the resin. What was formed in the process so far was used as a formed body.

Next, the formed body was impregnated with an electrolytic solution. As the electrolytic solution, a solution obtained by dissolving LiPF ₆ at a concentration of 1 mol / L in a solvent in which a solvent of ethylene carbonate and diethyl carbonate was mixed 1: 1 was used. The impregnation with the electrolytic solution used a dip method in which the formed body was immersed in an electrolytic solution bath.
Next, the formed body impregnated with the electrolytic solution was sealed with an exterior body. An aluminum laminate film was used for the exterior body. The aluminum laminate film was processed so that a part of the current collecting layer was exposed to the outside. Moreover, the part which contact | connects the current collection layer of the opening edge part of the aluminum laminate film processed so that a current collection layer might be exposed in the case of sealing was adhere | attached with the sealing material, and the outer peripheral part performed the thermal lamination process.
From the above, a lithium ion secondary battery in which the separator and the electrode were integrated could be formed.

  The battery manufacturing method of the present invention can be applied not only to the field of lithium ion secondary batteries, but also to all fields that require a mechanism for preventing contact between two types of electrodes, for example, for fuel cells and solar cells. It can also be applied to the field.

DESCRIPTION OF SYMBOLS 10 Substrate 11 Recess 12 Positive electrode material 13 Negative electrode material 14 Current collecting layer 15 Current collecting layer 16 Electrolyte 17 Exterior body A Ion moving direction B Ion moving direction

Claims (8)

A first step of providing a plurality of recesses on at least one surface of the substrate;
A second step of filling the recess with at least a pair of a positive electrode material and a negative electrode material;
A third step of forming a current collecting layer on the surfaces of the positive electrode material and the negative electrode material;
A fourth step of impregnating an electrolyte with the formed body formed by the first step to the third step;
And a fifth step of sealing the formed body impregnated with the electrolytic solution in a fourth step with an exterior material so that a part of the current collecting layer is exposed to the outside. Manufacturing method.   The method for manufacturing a lithium ion secondary battery according to claim 1, wherein the substrate is a porous material.   The method for manufacturing a lithium ion secondary battery according to claim 1, wherein the substrate is a polyolefin material.   2. The manufacturing of a lithium ion secondary battery according to claim 1, wherein in the first step, the recess is formed by any one of machining, chemical processing, thermal processing, laser processing, or a combination thereof. Method.   2. The method of manufacturing a lithium ion secondary battery according to claim 1, wherein in the second step, the concave portion is filled with the positive electrode material and the negative electrode material by a printing method including an ink-jet method and a die coating method.   3. The third step is characterized in that the current collecting layer is formed by any one of a vapor deposition method, a thin film forming method including a sputtering method, or a printing method including an ink jet method and a die coating method, or a combination thereof. The manufacturing method of the lithium ion secondary battery as described in 2 ..   A lithium ion secondary battery manufactured using the method for manufacturing a lithium ion secondary battery according to any one of claims 1 to 6.   A device that operates using the lithium ion secondary battery according to claim 7 as a power source or a power source.

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