KR100867996B1 - Multi-layered polymer wrapper for film battery and current collector combined with the wrapper - Google Patents

Abstract

A polymer packaging material for a film battery having a multilayer structure and a packaging material collector including the same are disclosed. The polymer battery packaging material and the combined current collector for a film battery according to the present invention include a multilayer polymer film having at least three-layer laminated structure including a first polymer film, a second polymer film, and a third polymer film each made of different materials. . The first polymer film is composed of a hydrocarbon compound substituted or unsubstituted with F atoms. The second polymer film consists of an amorphous polymer. The third polymer film is made of a polymer having a tensile strength and a tensile rate of a predetermined value or more. In the current collector for packaging material, a conductive layer is laminated on one surface of the multilayer polymer film.

Film cell, multilayer polymer film, packaging material, current collector, permeation characteristics, corrosion resistance

Description

Multi-layered polymer wrapper for film battery and multi-layered polymer wrapper including the same {Multi-layered polymer wrapper for film battery and current collector combined with the wrapper}

1 is a cross-sectional view showing the main part of the polymer packaging material for a film battery according to the first embodiment of the present invention.

2 is a cross-sectional view showing the main part of the polymer packaging material for a film battery according to the second embodiment of the present invention.

3 is a cross-sectional view showing a main portion of the current collector of the packaging material for a film battery according to a preferred embodiment of the present invention.

<Explanation of symbols for the main parts of the drawings>

100, 200: polymer packaging material for film battery, 102, 202: multilayer polymer film, 102a: first surface, 102b: second surface, 110: first polymer film, 120: second polymer film, 130: third polymer film 140: fourth polymer film, 150: polymer adhesive layer, 300: film battery packaging material combined current collector, 310: conductive layer.

The present invention relates to a film battery packaging material and a current collector, and more particularly, to a film battery polymer packaging material consisting of a polymer film of a multi-layer structure, and a packaging material collector including the same.

Recently, active radio frequency identification (RFID) and sensor node technologies have been actively studied. This technology, along with digital TV, home networks and intelligent robots, is expected to become a key industry of the future beyond current Code Devision Multiple Access (CDMA) technology. In other words, not only increases the recognition distance of the tag, but also detects the object information and the environment information around the tag. It is expected that the scope of information flow can be extended from communication between people and things through networking to communication between things. Therefore, in order to drive the radio wave identification tag and the sensor node, it is important to secure a self-power source completely independent of the reader by using a power element having a small size, light weight, and long lifespan suitable for a tag or node standard.

To date, there are film primary batteries among power devices that have been applied to RFID tags and sensor nodes. The electrode and electrolyte composition of the film primary battery are the same as those of a conventional battery and an alkaline battery, but the supporting container uses a PET (polyethylene terephalate) -based packaging material having a laminated film form without using a conventional cylindrical can. PET film used as a packaging material of the film primary battery according to the prior art is excellent in barrier properties because of low oxygen permeability. However, when the packaging material is made of a PET-based material, the hydrophilicity is relatively high compared to the case where the packaging material is made of a polyolefin series due to an ester group present on the surface of the packaging material. Accordingly, there is a disadvantage in that the permeability of water and oxygen is increased when there is excessive moisture in the surroundings. In addition, in some cases, moisture contained in the electrolyte solution inside the packaging material easily penetrates into the packaging film and may be evaporated and leaked through the packaging material. In addition, the film made of a PET-based material has a low corrosion resistance to strong acids or strong bases may cause corrosion of the film when in direct contact with a strong acid or strong base electrolyte. These disadvantages result in serious adverse effects on the durability, long-term storage, and life characteristics of the film cell.

An object of the present invention is to solve the above problems in the prior art, the gas having a small molecular size, such as hydrogen gas that is well generated inside the battery can be smoothly discharged to the outside, the moisture contained in the electrolyte The present invention provides a polymer packaging material for a film battery that can suppress evaporation or leakage to the outside, can suppress the permeation of moisture and oxygen from outside the battery, and is excellent in corrosion resistance to strong acids or strong base aqueous electrolytes.

Another object of the present invention is to provide a film battery packaging material combined current collector that can be advantageously applied to a film battery by being formed integrally with a packaging material that can provide the above characteristics.

In order to achieve the above object, the polymer packaging material for a film battery according to the present invention comprises a multi-layer polymer film of at least three-layer laminated structure comprising a first polymer film, a second polymer film and a third polymer film each made of different materials. Include. The first polymer film is composed of a hydrocarbon compound substituted or unsubstituted with F atoms. The second polymer film is made of an amorphous polymer. The third polymer film is made of a polymer having a tensile strength of at least 100 MPa (MD) and a tensile modulus of at least 3000 MPa (MD).

The first polymer film may be exposed on the first surface of the multilayer polymer film.

In the polymer battery packaging material according to the present invention, the multilayer polymer film may further include a fourth polymer film. The fourth polymer film may be exposed on a second surface opposite to the first surface of the multilayer polymer film.

The first polymer film and the second polymer film, the second polymer film and the third polymer film may be bonded to each other by a polymer adhesive layer.

In the polymer battery packaging material according to the present invention, the multilayer polymer film may include a plurality of at least one polymer film of the second polymer film and the third polymer film.

In order to achieve the above another object, the film battery packaging material combined current collector according to the present invention is a multilayer of at least three-layer laminated structure comprising a first polymer film, a second polymer film and a third polymer film each made of different materials; It includes a polymer film and a conductive layer laminated on one surface of the multilayer polymer film.

The conductive layer may include a nonmetal conductive material and a binder.

The first polymer film may be exposed on the first surface of the multilayer polymer film, and the conductive layer may be a second side opposite to the first surface of the first polymer film. Can be stacked on the surface.

The multilayer polymer film may further include a fourth polymer film interposed between the third polymer film and the conductive layer in the current collector for a film battery packaging material according to the present invention.

When the polymer battery packaging material and the packaging material collector according to the present invention are applied to the production of a film battery, hydrogen gas generated in the battery during discharge is gradually discharged to the outside of the battery while blocking the inflow of air from the outside of the battery. Thereby, the content of the moisture in the electrolyte solution in the film battery can be kept constant. In addition, it is excellent in corrosion resistance to strong acids and strong bases, and can block the permeation and penetration of the electrolyte through the film can improve the utilization and energy density of the film battery capacity, high rate discharge characteristics and pulse discharge characteristics. The polymer packaging material for a film battery according to the present invention can be mass-produced at a low cost.

Next, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a cross-sectional view showing the main components of the polymer battery packaging material 100 for a film battery according to a first embodiment of the present invention.

Referring to FIG. 1, the polymer battery packaging material 100 according to the present invention includes a first polymer film 110, a second polymer film 120, and a third polymer film 130 each made of different materials. The multilayer polymer film 102 has at least a three-layer laminated structure.

1 illustrates that the multilayer polymer film 102 further includes a fourth polymer film 140 in addition to the first polymer film 110, the second polymer film 120, and the third polymer film 130. It is.

The first polymer film 110 is composed of a hydrocarbon compound substituted or unsubstituted with F atoms. For example, the first polymer film 110 may be any one selected from the group consisting of polyethylene, polypropylene, polyvinylidene fluoride, polytetrafluoroethylene, and polystyrene, or at least two selected from these. It can be made of a blend of polymers.

The first polymer film 110 has strong hydrophobicity because its constituent elements consist only of C and H, or C, H and F. Therefore, when the multilayer polymer film 102 is used as a packaging material for a film battery, the first polymer film 110 is formed on the outermost side of the multilayer polymer film 102 to be exposed from the outside of the battery. It can block the oxygen or moisture infiltration, and can prevent the evaporation and leakage of water contained in the electrolyte from inside the battery.

The second polymer film 120 is made of an amorphous polymer. For example, the second polymer film 120 is any one selected from the group consisting of polyvinyl chloride, polyvinylidene chloride, nylon, polyacrylonitrile, and polyvinyl alcohol, or at least two selected from these. It can consist of a blend of polymers of species.

The second polymer film 120 serves to suppress the transmission of oxygen and carbon dioxide from the outside.

The third polymer film 130 is made of a polymer having a tensile strength of at least 100 MPa (MD) and a tensile modulus of at least 3000 MPa (MD). For example, the third polymer film 130 may be made of a polyester-based polymer such as polyethylene terephthalate, polybutylene terephthalate, or the like. Polyethylene terephthalate has a tensile strength of about 150 to 200 MPa (MD) and a tensile rate of about 4000 to 5000 MPa (MD). Polybutylene terephthalate has a tensile strength of about 100 to 200 MPa (MD) and a tensile rate of about 4000 to 5000 MPa (MD).

The third polymer film 130 serves to improve the mechanical strength of the multilayer polymer film 102, and also serves to suppress oxygen permeation from the outside.

The fourth polymer film 140 is for coating the conductive film on the multilayer polymer film 102 when another film, for example, a current collector conductive film is attached on the multilayer polymer film 102. To provide a base role. The polymer material that can be used to form the fourth polymer film 140 is not particularly limited. Any polymer can be used. For example, the fourth polymer film 140 may include polyethylene, polypropylene, polyvinyl chloride, polyvinylidene chloride, polyvinylidene fluoride, a copolymer of vinylidene fluoride and hexafluoropropylene, and vinylidene fluoride. Selected from the group consisting of copolymers of trifluoroethylene, copolymers of vinylidene fluoride and tetrafluoroethylene, nylon, polyacrylonitrile, polyvinyl alcohol, and ethyl vinyl alcohol, or selected from these It can be made of a blend of at least two kinds of polymers.

By employing the fourth polymer film 140, the multilayer polymer film 102 is reinforced with chemical resistance by the fourth polymer film 140 even when exposed to extreme conditions such as strong acid or strong base. Damage to the film 102 can be prevented.

As illustrated in FIG. 1, the first polymer film 110, the second polymer film 120, the third polymer film 130, and the fourth polymer film 140 are each interposed therebetween. They are bonded to each other by 150.

The polymer adhesive layer 150 may be made of, for example, any one selected from the group consisting of polyethylene, polypropylene, polyurethane, and acrylate-based polymers, or a blend of at least two polymers selected from these. Examples of suitable acrylate polymers for use in the present invention include polymethyl acrylate, polyethyl acrylate, polymethyl methacrylate, polyethyl methacrylate, polybutyl acrylate, and polybutyl methacrylate. Etc.

The first polymer film 110 is formed on one outermost surface of the multilayer polymer film 102 to be exposed at the outermost first surface 102a of the multilayer polymer film 102. The fourth polymer film 140 is the outermost side of the multilayer polymer film 102 such that the fourth polymer film 140 is exposed at the second surface 102b opposite to the first surface 102a of the multilayer polymer film 102. Is formed.

For example, the first polymer film 110, the second polymer film 120, the third polymer film 130, and the fourth polymer film 140 may each be 1 to 100 in the polymer battery packaging material 100. It may have a thickness of μm, the polymer adhesive layer 150 may have a thickness of about 0.1 to 50 ㎛. The film battery polymer packaging material 100 may have a thickness of about 5 to 450 μm.

Next, an exemplary method for manufacturing the polymer packaging material 100 for film batteries illustrated in FIG. 1 will be described.

First, both surfaces of the first polymer film 110, the second polymer film 120, the third polymer film 130, and the fourth polymer film 104 are subjected to corona discharge treatment. This serves to facilitate adhesion with the polymer adhesive layer 150 and lamination of each layer. In addition, when the conductive layer is to be coated on one surface of the multilayer polymer film 102 to form a current collector or an electrode based on the multilayer polymer film 102, the film is formed by the corona discharge treatment. The surface is modified to have a hydrophilic surface so that the coating is well formed.

The first polymer film 110, the second polymer film 120, the third polymer film 130, and the fourth polymer film 104 may be obtained by molding the melt resins extruded from the extruder into a film form. have. In particular, in order to form the second polymer film 120 made of an amorphous polymer, an amorphous oriented state is obtained by, for example, quenching a melt of a polymer having a very low crystallization rate in an amorphous state while drawing in an extruder. The process of forming the polymer film which has the thing can be used.

After the corona discharge treatment of the first polymer film 110, the second polymer film 120, the third polymer film 130, and the fourth polymer film 104 is obtained, a polymer adhesive layer is flowed therebetween. Attach and laminate each polymer film. For example, after the polymer adhesive layer 150 is formed on the fourth polymer film 140, the third polymer film 130 is laminated, and the polymer adhesive layer 150 is formed on the third polymer film 130. After formation, the second polymer film 120 is laminated, and a polymer adhesive layer is formed on the second polymer film 120, and then the first polymer film 110 is laminated to finally enhance corrosion resistance and mechanical properties. The functional multilayer polymer film 102 can be obtained.

2 is a cross-sectional view showing the main part of the polymer packaging material for a film battery 200 according to a second embodiment of the present invention. In Fig. 2, the same reference numerals as those in Fig. 1 described for the first embodiment denote the same members.

The polymer battery packing material 200 for a film battery according to the second embodiment of the present invention is generally similar to the configuration of the polymer battery packing material 100 for a film battery according to the first embodiment. However, the film battery polymer packaging material 200 is composed of a multilayer polymer film 202 including a plurality of second polymer film 120 and the third polymer film 130. 2 illustrates a case in which the second polymer film 120 and the third polymer film 130 are each formed in two layers in the multilayer polymer film 202.

As shown in FIG. 2, by forming the plurality of second polymer films 120 and the third polymer film 130, the oxygen permeation inhibiting properties and the mechanical strength of the polymer battery packaging material 200 may be further improved. .

The polymer packaging material 100 and 200 for a film battery according to an exemplary embodiment of the present invention as described with reference to FIGS. 1 and 2 may be configured to adjust the thickness of each film or the number of layers of the films. The permeability can be adjusted as desired according to the molecular size and the gas to be blocked from the external environment, and the desired mechanical strength can be obtained. In addition, the polymer battery packaging material (100, 200) for the film battery is excellent in corrosion resistance when it is applied as a packaging material of the film battery can improve the long-term stability and life characteristics of the battery. In addition, the polymer packaging material (100, 200) for the film battery according to the present invention can be implemented as a multilayer polymer film having various characteristics according to the conditions required in the film battery, it can be obtained by a simple and easy manufacturing process. .

3 is a cross-sectional view showing the main part configuration of a current collector 300 for a film battery packaging material according to an embodiment of the present invention. In Fig. 3, the same reference numerals as those in Fig. 1 described for the first embodiment denote the same members.

Referring to FIG. 3, the current collector 300 for a film battery packaging material according to the present invention includes a multilayer polymer film 102 and a conductive layer 310 stacked on one surface of the multilayer polymer film 102. do. In FIG. 3, the film battery packaging material current collector 300 includes the multilayer polymer film 102 of the polymer battery packaging material 100 illustrated in FIG. 1, but the present invention is not limited thereto. For example, instead of the multilayer polymer film 102, the multilayer polymer film 200 of the polymer battery packaging material 200 illustrated in FIG. 2 may be included, and the first, second or third polymer film ( It may also include a multilayer polymer film of another structure in which a plurality of layers of at least one film selected from 110, 120, and 130 are included.

The conductive layer 310 may have a thickness of about 1 to 100 μm. The conductive layer 310 includes a nonmetal conductive material and a binder.

The non-metal conductive material included in the conductive layer 310 may be made of conductive carbon. For example, the nonmetallic conductive material may be made of at least one material selected from the group consisting of graphite, carbon black, denka black, lonza carbon, super-P, activated carbon MSC30, and carbon nanotubes.

The binder included in the conductive layer 310 is polyethylene oxide, polypropylene oxide, starch, polyacrylic acid, polyvinyl alcohol, polyvinylacetate, cellulose, cellulose acetate, carboxymethyl cellulose, methyl cellulose, ethyl cellulose, butyl cellulose, Polyvinyl chloride, polyvinylidene chloride, polyvinylidene fluoride, polytetrafluoroethylene, and any one selected from the group consisting of Nafion, or a blend of at least two polymers selected from these. .

In the film-based battery packaging material collector 300, the first polymer film 110 is exposed on the first surface 102a of the multilayer polymer film 102, the conductive layer 310 is the multilayer The first polymer film 110 of the polymer film 102 is laminated on the second surface 102b opposite the first surface 102a to which it is exposed.

As illustrated in FIG. 3, the current collector 300 for a film battery packaging material includes a conductive film 310 laminated on one surface of the multilayer polymer film 102 of the polymer battery packaging material 100 for a film battery polymer packaging material ( 100 and the conductive layer 310 have a structure formed integrally. Accordingly, when the film battery is manufactured, the non-metallic current collector including no metal may be implemented by employing the current collector 300 for the film battery packaging material. Therefore, the weight of the battery can be reduced and excellent bending characteristics can be ensured. In particular, when the multilayer polymer film 102 having chemical resistance reinforced by the fourth polymer film 140 is used, even when the current collector 300 for a film battery packaging material is exposed to a strong acid or a strong base electrolyte, It can provide excellent corrosion resistance characteristics without concern.

Next, specific examples of the polymer packaging material for a film battery according to the present invention will be described in more detail. However, the following preparation examples are illustrated to aid the understanding of the present invention, and the scope of the present invention should not be construed as being limited thereto. It is possible.

Example 1

A 10 μm thick polyethylene film as the first polymer film, a 25 μm thick stretched amorphous polypropylene film as the second polymer film, a 16 μm thick stretched polyethylene terephthalate film as the third polymer film, and As a 4th polymer film, the 25 micrometer-thick white stretched polypropylene film was prepared, respectively. Thereafter, both surfaces of each film were subjected to corona discharge treatment. Each film was laminated in turn using an adhesive layer to prepare a multilayer polymer film. A 5 μm thick polyethylene film was used as the adhesive layer.

Example 2

A multilayer polymer film was prepared in the same manner as in Example 1, except that 25 μm thick ethylene vinyl alcohol was used as the second polymer film.

Example 3

A multilayer polymer film was prepared in the same manner as in Example 1, except that nylon having a thickness of 25 μm was used as the second polymer film.

Example 4

A multilayer polymer film was prepared in the same manner as in Example 1, except that 25 μm-thick polyvinylidene chloride was used as the second polymer film.

Example 5

A multilayer polymer film was prepared in the same manner as in Example 1, except that polyacrylonitrile having a thickness of 25 μm was used as the second polymer film.

Comparative example

In order to evaluate the permeability characteristics and the corrosion resistance of each of the multilayer polymer films prepared in Examples 1 to 5, a polyethylene terephthalate-based film applied as a packaging material to a film battery in the prior art was prepared. Two polyethylene terephthalate films having a thickness of 40 μm were prepared, and both surfaces of each film were subjected to corona discharge treatment, and then, they were bonded using an adhesive layer to prepare a polyethylene terephthalate double layer polymer film having a thickness of 86 μm.

Table 1 shows the results of measuring the permeability to oxygen, carbon dioxide, and moisture of the multilayer polymer films prepared in Examples 1 to 5 and the polymer film prepared in Comparative Example. Permeability measurements were made at room temperature and atmospheric pressure.

As shown in Table 1, with respect to oxygen, carbon dioxide, and moisture, the multilayer polymer films prepared in Examples 1 to 5 exhibited excellent permeation inhibition properties compared to the comparative examples. From the results of Table 1, it can be seen that the multilayer polymer film according to the present invention can effectively block air and moisture from the outside of the battery when used as a film battery packaging material or a film battery packaging material.

Table 2 shows the occurrence of corrosion in the electrolyte solution consisting of 6 M aqueous NH ₄ Cl solution and 6 M aqueous KOH solution for the multilayer polymer films prepared in Examples 1 to 5 and each of the polymer films prepared in Comparative Example. The observed result is shown.

In Table 2, "o" indicates a case where corrosion occurs on the film surface, "Δ" indicates a case where some corrosion occurs on the film surface, and "x" indicates a case where corrosion does not occur.

From the results of Table 2, it can be seen that the multilayer polymer films prepared in Examples 1 to 5 according to the present invention exhibit excellent corrosion resistance properties under both strong acid and strong base conditions. The results of Table 2 show that the multilayer polymer film according to the present invention can prevent deterioration of the battery by providing excellent corrosion resistance even when applied to the existing manganese or alkaline cells.

The polymer battery packaging material according to the present invention includes a first polymer film, a second polymer film, and a third polymer film each made of different materials. In particular, the first polymer film is composed of a hydrocarbon compound substituted or unsubstituted with F atoms to impart hydrophobicity at the outermost side of the packaging material, and the second polymer film is an amorphous polymer to inhibit the permeation of oxygen and carbon dioxide. The third polymer film is made of a polymer having a tensile strength and a tensile rate of a predetermined value or more to impart excellent mechanical strength. Therefore, the polymer packaging material for a film battery according to the present invention can permeate gas of small molecules such as hydrogen gas well, and permeation of oxygen, carbon dioxide or moisture in the air can be suppressed.

When the polymer battery packaging material according to the present invention or the current collector for film battery packaging material according to the present invention is applied to the production of a film battery, the hydrogen gas generated inside the battery during the discharge process is gradually discharged to the outside of the battery from the outside of the battery. By blocking the inflow of air, the content of water in the electrolyte in the film battery can be kept constant. As a result, the long-term stability of the film battery can be improved, and the performance of the battery can be stably maintained even during long-term discharge. In addition, the polymer packaging material for a film battery according to the present invention does not cause corrosion at all, even when exposed to strong acids and strong bases at all, and may block the permeation and penetration of the electrolyte through the film. Therefore, the utilization rate and energy density of a film battery capacity, high rate discharge characteristic, and pulse discharge characteristic can be improved.

Polymer battery packaging material according to the present invention can be manufactured by applying the conventional process that was applied to form a conventional multilayer film as it is possible to lower the product cost and mass production.

In the above, the present invention has been described in detail with reference to preferred embodiments, but the present invention is not limited to the above embodiments, and various modifications and changes by those skilled in the art within the spirit and scope of the present invention. This is possible.

Claims (19)

It contains a multilayer polymer film of at least three-layer laminated structure including a first polymer film, a second polymer film and a third polymer film, each of which contains no metal, and is made of different materials. The first polymer film is composed of a hydrocarbon compound substituted or unsubstituted with F atoms, The second polymer film is made of an amorphous polymer, The third polymer film is a polymer packaging material for a film battery, characterized in that made of a polymer having a tensile strength of at least 100 MPa (MD) and a tensile modulus of at least 3000 MPa (MD). The method of claim 1, The first polymer film is made of any one selected from the group consisting of polyethylene, polypropylene, polyvinylidene fluoride, polytetrafluoroethylene, and polystyrene, or a blend of at least two polymers selected from these. Polymer packaging material for film batteries. The method of claim 1, The second polymer film is any one selected from the group consisting of polyvinyl chloride, polyvinylidene chloride, nylon, polyacrylonitrile, and polyvinyl alcohol, or a blend of at least two polymers selected from these. Polymer battery packaging material, characterized in that made. The method of claim 1, The third polymer film is a polymer packaging material for a film battery, characterized in that made of a polyester-based polymer. The method of claim 4, wherein The third polymer film is a polymer packaging material for a film battery, characterized in that consisting of polyethylene terephthalate or polybutylene terephthalate. The method of claim 1, The polymer film for a film battery, characterized in that the first polymer film is exposed on the first surface of the multilayer polymer film. The method of claim 6, The multilayer polymer film further comprises a fourth polymer film, The fourth polymer film is a polymer packaging material for a film battery, characterized in that exposed on the second surface opposite to the first surface in the multilayer polymer film. The method of claim 7, wherein The fourth polymer film is polyethylene, polypropylene, polyvinyl chloride, polyvinylidene chloride, polyvinylidene fluoride, copolymer of vinylidene fluoride and hexafluoropropylene, air of vinylidene fluoride and trifluoroethylene Any one selected from the group consisting of copolymers, copolymers of vinylidene fluoride and tetrafluoroethylene, nylon, polyacrylonitrile, polyvinyl alcohol, and ethyl vinyl alcohol, or at least two polymers selected from these A polymer packaging material for a film battery, characterized by comprising a blend of. The method of claim 1, And said first polymer film and said second polymer film, and said second polymer film and said third polymer film are bonded to each other by a polymer adhesive layer. The method of claim 9, The polymer adhesive layer is any one selected from the group consisting of polyethylene, polypropylene, polyurethane, and acrylate-based polymers, or a polymer packaging material for a film battery, characterized in that made of a blend of at least two kinds of polymers selected from these. The method of claim 10, The acrylate-based polymer is at least one selected from the group consisting of polymethyl acrylate, polyethyl acrylate, polymethyl methacrylate, polyethyl methacrylate, polybutyl acrylate, and polybutyl methacrylate A polymer packaging material for film batteries. The method of claim 1, The multilayer polymer film includes a plurality of polymer films of at least one of the second polymer film and the third polymer film. A multilayer polymer film having at least a three-layer laminated structure including a first polymer film, a second polymer film, and a third polymer film, each of which is made of a different material and does not contain a metal, and on one surface of the multilayer polymer film A laminated nonmetal conductive layer, In the multilayer polymer film, the first polymer film is made of a hydrocarbon compound substituted or unsubstituted with an F atom, the second polymer film is made of an amorphous polymer, and the third polymer film is at least 100 MPa (MD) A film battery packaging material dual-use current collector having a tensile strength and a tensile modulus of at least 3000 MPa (MD). The method of claim 13, The non-metal conductive layer is a current collector for a film battery packaging material, characterized in that it comprises a non-metal conductive material and a binder. The method of claim 14, The non-metal conductive material is a film battery packaging material combined current collector, characterized in that it comprises conductive carbon. The method of claim 15, The conductive carbon is a current collector for a film battery packaging material, characterized in that any one selected from the group consisting of graphite, carbon black, denka black, Lonza carbon, Super-P, activated carbon MSC30, and carbon nanotubes. The method of claim 14, The binder is polyethylene oxide, polypropylene oxide, starch, polyacrylic acid, polyvinyl alcohol, polyvinylacetate, cellulose, cellulose acetate, carboxymethyl cellulose, methyl cellulose, ethyl cellulose, butyl cellulose, polyvinyl chloride, polyvinylidene chloride, A film battery packaging material combined current collector, comprising any one selected from the group consisting of polyvinylidene fluoride, polytetrafluoroethylene, and nafion, or a blend of at least two polymers selected from these. The method of claim 13, The first polymer film is exposed on the first surface of the multilayer polymer film, The non-metal conductive layer is laminated on a second surface opposite to the first surface of the first polymer film, the current collector for a film battery packaging material, characterized in that. The method of claim 18, The multilayer polymer film further comprises a fourth polymer film interposed between the third polymer film and the non-metal conductive layer.

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