JPH06325752A - Plate for nonaqueous electrolytic secondary battery and its manufacture - Google Patents

Abstract

PURPOSE:To make an active material coated film sufficiently flexible, make close adhesion excellent between the coated film and a current collector made of metallic foil, and also make discharge characteristics excellent by forming an active material layer containing active material and hardened reaction hardening type binder as an indispensable constituent for one part of the current collector made of metallic foil. CONSTITUTION:An active material layer containing active material and hardened reaction hardening binder as an indispensable constituent is formed at least, over one part of a current collector made of metallic foil in a pole plate for a non-aqueous electrolyte secondary battery. In this case, the hardened reaction hardening binder is a thermally hardened binder, a binder hardened by ionizing radiation, and is also a binder hardened by thermal hardening and ionized radiation. Furthermore, when the pole plate is manufacture, the active material layer is formed over the current collector made of metallic foil by coating composition compound containing the active material and the hardened reaction hardening binder as an indispensable constituent at least, over one part of the current collector made of metallic foil, and thereby by hardening the binder contained in the composition compound coated over the current collector made of metallic foil.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrode plate for a non-aqueous electrolyte secondary battery represented by a lithium ion secondary battery and a method for producing the same, and more specifically, it is active in a battery assembly process and the like. The present invention relates to an electrode plate for a non-aqueous electrolyte secondary battery, which exhibits excellent discharge characteristics without causing peeling, falling off, cracking or the like on a material coating film, and a method for producing the same.

[0002]

2. Description of the Related Art In recent years, electronic devices and communication devices have been rapidly reduced in size and weight, and secondary batteries used as power sources for driving these devices are also required to be reduced in size and weight.
Non-aqueous electrolyte secondary batteries, which are representative of lithium ion secondary batteries having high energy density and high voltage, are used in place of alkaline storage batteries.

As for the electrode plate which greatly affects the performance of the secondary battery, the area is increased by thinning it in order to increase the current density.

To meet these demands, for example, Japanese Patent Application Laid-Open No. 63-10466 and Japanese Patent Application Laid-Open No. 3-2852.
No. 62 discloses a paste-like active material coating agent prepared by adding a conductive agent, a binder and, if necessary, an appropriate wetting agent and the like to positive electrode active material powders such as metal oxides, sulfides and halides. There has been proposed a positive electrode plate in which a coating film of the active material coating agent, that is, an active material coating film is formed on a metal foil current collector.

In the electrode plate obtained by forming a film of the above-mentioned active material coating agent, that is, an active material coating film on a metal foil current collector, the binder of the active material coating agent is electrically charged against a non-aqueous electrolyte, especially an organic solvent. It is chemically stable, does not elute into the electrolyte, has flexibility to prevent peeling, falling off, cracking, etc. during the process of assembling the active material coating film into the battery. It is necessary to have excellent adhesion to the electric body.

[0006]

By the way, in the above-mentioned electrode plate formed by forming the active material coating film on the conventional metal foil current collector, the binder in the active material coating agent is polytetralfluoroethylene, It is made of a fluororesin such as polyvinylidene fluoride or a silicone = acrylic copolymer.

However, according to the knowledge of the present inventor,
Active material coatings using these binders are not sufficiently flexible, and therefore peeling, falling off, cracking, etc. easily occur in the process of assembling the electrode plate into the battery, which makes the discharge characteristics unstable. There is a problem that

Further, since the active material in the coating film causes a structural change by the adsorbed water, it is necessary to heat the electrode plate to a high temperature of 200 ° C. or more to dry it before assembling the electrode plate into a battery. The active material coating film on the electrode plate is easily softened by heating at this time, which has a drawback that the adhesion between the metal foil current collector and the active material coating film is deteriorated and peeling or dropping occurs. .

The present invention has been made in view of the problems associated with the above-described prior art, in which the active material coating film (active material layer) has sufficient flexibility and the active material coating film is applied. A non-aqueous electrolyte that has good adhesion between the membrane and the metal foil current collector, and does not cause peeling, falling, cracking, etc. on the active material coating film during the battery assembly process, etc., and has excellent discharge characteristics. It is an object of the present invention to provide an electrode plate for a secondary battery and a method for easily and efficiently producing the electrode plate for a non-aqueous electrolyte secondary battery.

[0010]

The electrode plate for a non-aqueous electrolyte secondary battery according to the present invention contains an active material and a cured reaction-curable binder as essential components in at least a part of a metal foil current collector. An active material layer (active material coating film) obtained by the above is formed.

Furthermore, in the method for producing an electrode plate for a non-aqueous electrolyte secondary battery according to the present invention, a composition containing an active material and a reaction-curable binder as essential components is applied to at least a part of a metal foil current collector. Then, the binder in the composition applied to the metal foil current collector is cured to form an active material layer on the metal foil current collector.

In the electrode plate for a non-aqueous electrolyte secondary battery and the method of manufacturing the same of the present invention having the above-mentioned structure, the non-aqueous electrolyte secondary battery is, for example, a lithium secondary battery.

As the metal foil current collector on which the active material layer is formed, a metal foil such as aluminum, copper or stainless steel can be used.

The composition for forming the active material layer contains an active material and a reaction-curable binder as essential components. Further, this composition is made by kneading or dispersing by adding a solvent, if necessary. Note that it is preferable to mix graphite, carbon black, acetylene black, or the like as a conductive agent in this composition. However, when the active material has a conductive function (electron conductivity), the conductive agent is not necessary.

Examples of the positive electrode active material of the electrode plate for non-aqueous electrolyte secondary batteries include LiMO ₂ (M = Co, Ni, M
n or the like), a lithium oxide such as LiMn ₂ O ₄ , or a chalcogen compound such as TiS ₂ , MnO ₂ , MoO ₃ , or V ₂ O ₅ can be used alone or in combination. In particular, by using LiCoO ₂ as the positive electrode active material, a battery having a high discharge voltage of about 4 V can be obtained.

As the negative electrode active material, carbonaceous materials such as graphite, carbon black and acetylene black can be preferably used in addition to lithium and lithium alloys.

The reaction-curable binder contained in the active material layer composition is substantially unreacted in the step of applying the active material layer composition to the metal foil current collector, and is applied. It is capable of being reactively cured by subsequent heat treatment or ionizing radiation irradiation treatment to form a cured active material layer.

The reaction-curable binder is heat-curable and / or
Or ionizing radiation curable prepolymer, oligomer,
The main component is a monomer (including a curing agent).

The thermosetting binder is, for example, one of prepolymers such as urethane, epoxy, melamine, phenol = formaldehyde, amide, urea and acrylic reaction system, oligomers, monomers (hardeners), or
Combinations of these can be preferably used. In addition, upon application, a polymerization initiator, a catalyst, and the like may be appropriately combined as needed.

For example, in the case of a urethane type thermosetting binder, a polyol compound such as polyethylene glycol or polycaprolactone and toluene diisocyanate, diphenylmethane diisocyanate, 1, 6
It is preferable to use a suitable combination of polyisocyanate compounds such as hexanediol diisocyanate, isophorone diisocyanate, xylene diisocyanate and their derivatives and multimers. Further, in the case of an epoxy thermosetting binder, it is preferable to combine a polyglycidyl compound with a polycarboxyl compound, a porinamine compound or the like.

As the ionizing radiation-curable binder, prepolymers such as (meth) acryloyl compounds, allyl compounds and vinyl compounds, which react with radiation such as ultraviolet rays, electron beams and γ rays, oligomers and monomers are used. Urethane (meth) acrylate, epoxy (meth)
Prepolymers and oligomers such as acrylate and polyester (meth) acrylate, or styrene,
(Meth) acrylic acid, methyl (meth) acrylate, butyl (meth) acrylate, 2-hydroxyethyl acrylate, ethylene glycol diacrylate, diethylene glycol diacrylate, hexamethylene glycol diacrylate, neopentyl glycol diacrylate, ethylene glycol di Glycidyl ether diacrylate, diethylene glycol diglycidyl ether acrylate, hexamethylene glycol diglycidyl ether diacrylate, neopentyl glycol diglycidyl ether diacrylate, trimethylolpropane triacrylate, pentaerythritol triacrylate, pentaerythritol tetraacrylate, dipentaerythritol pentaacrylate , Dipentaerythritol hex It may be used alone or in a combination of theses monofunctional and polyfunctional monomers such as acrylates. When ultraviolet rays are used as the curing means, it is preferable to include a photopolymerization initiator.

Further, by using a thermosetting binder and an ionizing radiation curable binder in combination as the reaction curable binder, the adhesion of the active material layer to the metal foil current collector,
Alternatively, heat resistance, mechanical strength and the like can be further improved. That is, the thermosetting binder and the ionizing radiation-curable binder shown above are appropriately mixed and used, or exhibiting ionizing radiation reactivity such as (meth) acryloyl group, allyl group, vinyl group and glycidyl group in the molecule. The thermosetting prepolymer, oligomer having a functional group,
This is accomplished by including the monomer in the binder. For example, when the thermosetting oligomer having a functional group exhibiting ionizing radiation reactivity is a urethane oligomer, a part of the isocyanate group of the polyisocyanate compound, a hydroxyl group reactive with isocyanate, a functional group such as an amino group A compound obtained by previously reacting with the (meth) acryloyl compound or the like that it has is given as an example, but not limited thereto.

Further, in the composition, a polyester resin,
Stability of the composition, suitability for coating, by adding a thermoplastic resin such as a polyamide resin, a polyacrylic ester resin, a polyurethane resin, a cellulose resin, a polyolefin resin, or a fluororesin, a wax, or a surfactant. The adhesiveness, heat resistance, mechanical strength and the like of the obtained active material layer can be improved.

The content of the active material in the composition is 70-
99.5% by weight is preferable, and more preferably 80-9.
It is 5% by weight. On the other hand, the content of the reaction-curable binder is preferably 0.5 to 30% by weight, more preferably 5 to 20% by weight.

The active material layer-forming composition is prepared by adding a powdery active material, a reaction-curable binder, and, if necessary, a conductive agent and a solvent, to a homogenizer, ball mill, sand mill or roll mill. It can be carried out by mixing and dispersing by the above.

Application of the composition to the metal foil current collector is, for example, gravure coat, gravure reverse coat, roll coat, Meyer bar coat, blade coat, knife coat, air knife coat, comma coat, slot die coat, slide die coat. , Dip coating and the like. The thickness of the active material layer formed on the metal foil current collector is 10 to 200 in terms of the thickness after drying.
μm is preferable, and more preferably 50 to 150 μm.
It is about m. The thickness of the active material can be appropriately selected according to the characteristics of the target battery from the viewpoint of volume efficiency, weight efficiency per unit area, and prevention of cracks.

After applying the composition to the metal foil current collector, the solvent is optionally removed, and then the binder in the composition is cured. The step of curing the binder is carried out by a heating treatment with a dryer or an electric furnace, or an irradiation treatment with ionizing radiation by an ultraviolet lamp, an electron beam irradiation device, a γ-ray irradiation device or the like, depending on the curing type of the binder.

After curing the binder in the composition,
Furthermore, in order to improve the homogeneity of the active material layer (coating film), it is preferable to subject the coating film surface to a treatment with a heating roll or a sheet pressing machine.

Before assembling a battery using the obtained electrode plate, the electrode plate is subjected to heat treatment, decompression treatment, etc. to remove water in the active material layer of the electrode plate. Is preferred.

When a secondary battery is manufactured using the electrode plate obtained by the above steps, a non-protonic organic solvent such as ethylene carbonate, propylene carbonate, diethylene carbonate, 2-methyltetrahydrofuran is used. , Dimethoxyethane, etc. or LiCil ₄ , LiPF ₆ , LiAsF ₆ , L
It is desirable to use one to which an electrolyte supporting salt such as iBF ₄ is added.

The electrode plate for a non-aqueous electrolyte secondary battery of the present invention comprises:
A process for assembling an electrode plate into a battery, in which an active material film containing an active material and a reaction-curable binder as essential components is formed on a metal foil current collector and the active material layer has excellent flexibility. The electrode plate for a non-aqueous electrolyte secondary battery in which the active material layer formed on the metal foil current collector does not peel, fall off, or crack, and has stable discharge characteristics Can be manufactured.

[0032]

[Examples] Specific examples of the constitution of the electrode plate for a non-aqueous electrolyte secondary battery of the present invention, and the characteristic evaluation results of the battery constituted by using the electrode plate will be described below based on examples. Example 1 90 parts by weight of LiCoO ₂ powder having an average particle size of about 10 μm, 5 parts by weight of graphite powder, 5 parts by weight of urethane oligomer (Takenate A-270L, manufactured by Takeda Pharmaceutical Co., Ltd.) and 20 parts by weight of ethyl acetate, A homogenizer was used to stir and disperse at a rotation speed of 8,000 rpm for 10 minutes to obtain a positive electrode coating agent.

90 parts by weight of graphite powder, 10 parts by weight of urethane oligomer (Takenate A-270L, manufactured by Takeda Pharmaceutical Co., Ltd.) and 30 parts by weight of ethyl acetate were stirred and dispersed with a homogenizer at a rotation speed of 8000 rpm for 10 minutes. By doing so, a negative electrode coating material was obtained.

Then, the above-mentioned positive electrode coating agent was applied to a current collector made of an aluminum foil having a heat of 20 μm and a thickness of 10 μm.
Apply the above-mentioned negative electrode coating agent to a current collector made of copper foil of m using a slot die coater, and then dry in an oven at 100 ° C to remove the solvent. Thus, a dry coating film having a thickness of about 100 μm was obtained.

Subsequently, each current collector having the above coating film
The urethane oligomer in the coating film was cured by subjecting it to aging treatment at 72 ° C. for 72 hours to obtain an active material coating film.

Further, the active material coating film surface of each current collector having the above active material coating film is subjected to a pressure treatment using a heating roller press machine at 200 ° C. to homogenize the coating film. An electrode plate for a non-aqueous electrolyte secondary battery was obtained.

The obtained electrode plate was subjected to heat treatment at 250 ° C. to remove water, and at the same time, a non-aqueous electrolyte secondary battery was assembled. During the assembly process, peeling of the active material coating film on the electrode plate, There was no cracking or falling off. Table 1 shows the occurrence of peeling, falling, and cracking during the assembly process. Example 2 90 parts by weight of LiCoO ₂ powder having an average particle size of about 10 μm, 5 parts by weight of graphite powder, urethane acrylate oligomer (Shikko UV-4200B, Nippon Synthetic Chemical Industry Co., Ltd.)
4 parts by weight, acrylic acid ester monomer (pentaerythritol triacrylate, Kayarad PET-3)
0, 1 part by weight of Nippon Kayaku Co., Ltd. and an equal weight mixed solvent of methyl ethyl ketone and isopropyl alcohol 20
The coating material for the positive electrode was obtained by stirring and dispersing parts by weight with a homogenizer at a rotation speed of 8000 rpm for 10 minutes.

Further, 90 parts by weight of graphite powder, urethane acrylate oligomer (purple UV-4200B,
8 parts by weight of Nippon Synthetic Chemical Industry Co., Ltd., 2 parts by weight of acrylic acid ester monomer (pentaerythritol triacrylate, Kayarad PET-30, manufactured by Nippon Kayaku Co., Ltd.) and an equal weight mixture of methyl ethyl ketone and isopropylyl alcohol. 30 parts by weight of the solvent was stirred and dispersed with a homogenizer at a rotation speed of 8000 rpm for 10 minutes to obtain a coating material for negative electrode.

Next, the above-mentioned positive electrode coating agent was applied to a current collector made of an aluminum foil having a thickness of 20 μm and a thickness of 10 μm.
Apply the above-mentioned negative electrode coating agent to a current collector made of copper foil of m using a slot die coater, and then dry in an oven at 100 ° C to remove the solvent. Thus, a dry coating film having a thickness of about 100 μm was obtained.

Subsequently, 5 Mrad at an accelerating voltage of 200 KV was applied to both sides of each current collector having the coating film by an electron beam irradiation device (Curetron, manufactured by Nisshin High Voltage Co., Ltd.).
The electron beam was applied to cure the oligomer in each dry coating film, thereby curing the dry coating film.

Further, the active material coating film surface of each current collector having the active material coating film is subjected to pressure treatment using a heating roller press machine at 200 ° C. to homogenize the coating film. An electrode plate for a non-aqueous electrolyte secondary battery was obtained.

The obtained electrode plate was subjected to heat treatment at 250 ° C. to remove water, and at the same time, a non-aqueous electrolyte secondary battery was assembled. During the assembly process, peeling of the active material coating film on the electrode plate, There was no cracking or falling off. Table 1 shows the occurrence of peeling, falling, and cracking during the assembly process. Example 3 90 parts by weight of LiCoO ₂ powder having an average particle size of about 10 μm, 5 parts by weight of graphite powder, 3 parts by weight of urethane-based oligomer (Takenate A-270L, manufactured by Takeda Pharmaceutical Co., Ltd.) and acrylate monomer (trimethylol). 2 parts by weight of propane triacrylate, Kayarad TMPTA, manufactured by Nippon Kayaku Co., Ltd. and 30 parts by weight of an equal weight mixed solvent of methyl ethyl ketone and ethyl acetate were stirred and dispersed by a homogenizer at a rotation speed of 8000 rpm for 10 minutes to obtain a positive electrode. A coating agent for use was obtained.

90 parts by weight of graphite powder, 8 parts by weight of urethane type oligomer (Takenate A-270L, manufactured by Takeda Pharmaceutical Co., Ltd.) Acrylic ester monomer (trimethylolpropane triacrylate, Kayarad TMPTA, Nippon Kayaku Co., Ltd.) )) And 30 parts by weight of a mixed solvent of an equal weight of methyl ethyl ketone and ethyl acetate are mixed with a homogenizer at 1 rpm at a rotation speed of 8000 rpm.
The negative electrode coating material was obtained by stirring and dispersing for 0 minutes.

Then, the above-mentioned positive electrode coating agent was applied to a current collector made of aluminum foil having a heat of 20 μm and a thickness of 10 μm.
Apply the above-mentioned negative electrode coating agent to a current collector made of copper foil of m using a slot die coater, and then dry in an oven at 100 ° C to remove the solvent. Thus, a dry coating film having a thickness of about 100 μm was obtained.

Subsequently, 5 Mrad at an accelerating voltage of 200 KV was applied to both sides of each current collector having the coating film by an electron beam irradiation device (Curetron, manufactured by Nisshin High Voltage Co., Ltd.).
The electron beam was applied to cure the oligomer in each dry coating film, thereby curing the dry coating film.

Further, the active material coating surface of each current collector having the active material coating film is subjected to pressure treatment using a heating roller press machine at 200 ° C. to homogenize the coating film. An electrode plate for a non-aqueous electrolyte secondary battery was obtained.

The obtained electrode plate was subjected to heat treatment at 250 ° C. to remove water, and at the same time, a non-aqueous electrolyte secondary battery was assembled. During the assembly process, the active material coating film on the electrode plate was peeled off. There was no cracking or falling off. Table 1 shows the occurrence of peeling, falling, and cracking during the assembly process. Comparative Example 90 parts by weight of LiCoO ₂ powder having an average particle size of about 10 μm, 5 parts by weight of graphite powder, 5 parts by weight of polyvinylidene fluoride resin (Neotron VDF, manufactured by Dyne Industry Co., Ltd.) and 20 parts by weight of N-methylpyrrolidone were used as a homogenizer. By stirring and dispersing at 8,000 rpm for 10 minutes, a positive electrode coating material was obtained.

90 parts by weight of graphite powder, 10 parts by weight of polyvinylidene fluoride resin (Neotron VDF, manufactured by Daikin Industries, Ltd.) and 3 parts of N-methylpyrrolidone 3
Rotate 0 parts by weight with a homogenizer at 8000 rpm.
By stirring and dispersing for 10 minutes, a negative electrode coating material was obtained.

Then, the above-mentioned positive electrode coating agent was applied to a current collector made of an aluminum foil having a thickness of 20 μm and a thickness of 10 μm.
By applying the above-mentioned negative electrode coating agent to the current collector made of copper foil of m using a slot die coater on both sides of each final charge, and drying in an oven at 200 ° C. to remove the solvent. A dry coating film having a thickness of about 100 μm was obtained.

Further, the surface of the active material coating film of each current collector having the active material coating film was pressure-treated using a heating roller press machine at 200 ° C. to homogenize the coating film for comparison. An electrode plate for a non-aqueous electrolyte secondary battery was obtained.

The obtained electrode plate was subjected to a heat treatment at 250 ° C. to remove water, and at the same time, a non-aqueous electrolyte secondary battery was assembled. During the assembly process, peeling of the active material coating film on the electrode plate, There were many cracks. Table 1 shows the occurrence of peeling, falling, and cracking during the assembly process. Characteristic Test Using the electrodes of Examples 1 and 2 and Comparative Example, EC (ethylene carbonate): PC (propylene carbonate): DME (dimethoxyethane) was used as an electrolytic solution in a volume ratio of 1: 1: 2, and the total amount was 1 liter. A solution of 1 mol of LiPF ₆ as a supporting salt was poured into the mixed solvent so that it had an AA size and a rated capacity of 500 mA.
The battery of h was assembled.

To measure the battery characteristics, a charge / discharge measuring device was used for each 20 cells, and the maximum charge current was 1.0 mA / cm ^2.
First, the battery voltage from the charging direction is 4.
Constant voltage charge to 3V, 10 minute rest, constant current discharge with the same current until 2.75V, 10 minute rest, then 100 cycles of charge / discharge under the same conditions. The charge / discharge characteristics were measured.

FIG. 1 shows the first embodiment, the second embodiment, the third embodiment,
The respective average values of the discharge capacities of the batteries of 20 cells each configured by using the electrodes prepared in Comparative Example were plotted for each cycle. In all cases, the average value of the initial capacity was 100%. In the batteries prepared with the electrodes of Example 1, Example 2 and Example 3, the average discharge capacity was maintained at about 85% even after 100 cycles, whereas that of the batteries prepared in Comparative Example The capacity reduction rate after 20 cycles was remarkable, and when 100 cycles had passed, the maintenance rate was only about 35%.

FIGS. 2 to 5 show discharge characteristic curves for the results shown in FIG. 1 at 1 cycle and 100 cycles. In both cases, the average initial capacity is 100%
And In the batteries made with the electrodes of Example 1, Example 2 and Example 3, even after 100 cycles,
The capacity variation was 5% or less, whereas that of the battery produced in the comparative example showed a large variation of about 20%.

After the charge-discharge cycle test, these batteries were disassembled, the electrodes were taken out, and the state of the electrode plate was observed. As shown in Table 2, the electrodes of the batteries prepared in Examples 1, 2 and 3 were obtained. Although the active material layer on the plate did not have peeling, cracking, or falling, the electrode plate of the battery prepared in Comparative Example 1 had peeling, cracking, or the like on the active material layer, which resulted in a decrease in capacity. , It was found to be the main cause of capacity variation.

[0056]

[Table 1]

[0057]

[Table 2]

[0058]

INDUSTRIAL APPLICABILITY In the electrode plate for a non-aqueous electrolyte secondary battery of the present invention, the active material layer has good flexibility, and the adhesion between the active material layer and the metal foil current collector is high. Therefore, the active material coating film is not peeled, cracked, or dropped during the battery assembly process or the like, and stable discharge characteristics can be exhibited.

[Brief description of drawings]

FIG. 1 is a graph in which the average values of the discharge capacities of batteries of 20 cells each configured by using the electrodes prepared in Example 1, Example 2, Example 3, and Comparative Example are plotted for each cycle.

2 is a discharge characteristic curve at 1 cycle and 100 cycles in Example 1. FIG.

3 is a discharge characteristic curve at 1 cycle and 100 cycles in Example 2. FIG.

FIG. 4 is a discharge characteristic curve at 1 cycle and 100 cycles in Example 3.

FIG. 5 is a discharge characteristic curve at 1 cycle and 100 cycles in a comparative example.

Continued front page (72) Toru Mangahara Toru Mangahara, Iwaki City, Fukushima Prefecture 23-6 Hashidashi, Joban Shimofunao-cho Furukawa Battery Co., Ltd. (Iwaki Works) (72) Inventor, Kazuo Umeda 1-1-1 Dai Nippon Printing Co., Ltd. (72) Inventor Kiyoshi Oguchi 1-1-1 Ichigaya-Kagacho, Shinjuku-ku, Tokyo Dai Nippon Printing Co., Ltd. (72) Inventor Mitsuru Tsuchiya Shinjuku, Tokyo 1-1-1 Ichigaya, Ichiya-ku, Dai-ni Printing Co., Ltd.

Claims (8)

[Claims] 1. A non-aqueous material, characterized in that an active material layer containing an active material and a cured reaction-curable binder as essential components is formed on at least a part of a metal foil current collector. Electrolyte solution Electrode plate for secondary battery. 2. The electrode plate for a non-aqueous electrolyte secondary battery according to claim 1, wherein the cured reaction-curable binder is a thermosetting binder. 3. The electrode plate for a non-aqueous electrolyte secondary battery according to claim 1, wherein the cured reaction-curable binder is a binder cured by ionizing radiation. 4. The electrode plate for a non-aqueous electrolyte secondary battery according to claim 1, wherein the cured reaction-curable binder is a binder cured by heat curing and ionizing radiation. 5. A composition containing an active material and a reaction-curable binder as essential components is applied to at least a part of a metal foil current collector, and the binder in the composition applied to the metal foil current collector is used. A method for producing an electrode plate for a non-aqueous electrolyte secondary battery, which comprises forming an active material layer on a metal foil current collector by curing. 6. The method for producing an electrode plate for a non-aqueous electrolyte secondary battery according to claim 5, wherein the cured reaction-curable binder is a thermosetting binder. 7. The method for producing an electrode plate for a non-aqueous electrolyte secondary battery according to claim 5, wherein the cured reaction-curable binder is a binder cured by ionizing radiation. 8. The method for producing an electrode plate for a non-aqueous electrolyte secondary battery according to claim 5, wherein the cured reaction-curable binder is a binder cured by heat curing and ionizing radiation.