KR20150014795A - Electrode Assembly and Battery Having Porosity Member - Google Patents

Abstract

The present invention aims to provide an electrode laminate of which a degree of electrolyte impregnation can be measured from the outside; and a battery of which operation is not influenced by a means for measuring the degree of electrolyte impregnation. The present invention provides the electrode laminate including one or more positive electrodes, one or more negative electrodes, one or more separation membranes interposed between the positive electrodes and the negative electrodes, and a porous member capable of absorbing liquid electrolyte which is connected to the electrode or is extended from the electrode.

Description

[0001] Electrode Assembly and Battery Having Porosity Member [0002]

The present invention relates to an electrode laminate and a battery including the porous member.

As technology development and demand for mobile devices are increasing, the demand for secondary batteries as energy sources is rapidly increasing. Among such secondary batteries, many studies have been made on lithium secondary batteries having high energy density and discharge voltage, Widely used.

Generally, a secondary battery includes an electrode assembly composed of a positive electrode, a negative electrode, and a separator interposed between the positive electrode and the negative electrode, which is laminated or wrapped in a battery case of a metal can or a laminate sheet and then injected or impregnated with an electrolyte solution have.

Among such secondary cells, the folding type cell requires a plurality of bi-cells to pass through the electrolyte in order to impregnate the electrolyte deep inside the battery, so that the electrolytic solution impregnation process is not easy. In order to confirm the degree of impregnation, There is a problem that it is necessary to confirm visually whether the innermost bicycle is impregnated.

Accordingly, there is a need to develop a new lithium secondary battery for solving the above problems.

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-described problems of the prior art and the technical problems required from the past.

An object of the present invention is to provide an electrode laminate and a battery which can measure the degree of electrolyte impregnation from the outside of the cell and the measuring means does not affect the operation of the battery.

In order to accomplish the above object, according to the present invention, there is provided an electrode laminate,

At least one anode;

One or more cathodes;

At least one separator interposed between the anode and the cathode; And

A porous electrolyte-absorptive porous member connected to or extending from the electrode;

As shown in FIG.

That is, since the electrode laminate according to the present invention includes the liquid electrolyte absorbing porous member connected to the electrode or extending from the electrode, the degree of electrolyte impregnation can be measured from the outside of the cell, and the porous member, Lt; / RTI >

The electrode assembly may further include a liquid electrolyte non-absorbent conductive member connected or extended at one end of the porous member and connected to the electrode or extending from the electrode.

The electrode assembly may further include a liquid electrolyte non-absorbent conductive member connected or extended at the other end of the porous member.

The porous member may have a mesh structure.

The porous member may include at least one member selected from the group consisting of a polyolefin resin, a fluorine resin, a polyester resin, an engineering plastic, a super-engineering plastic, and an absorbent resin.

The water absorbent resin may be at least one selected from the group consisting of graft polymerized starch, carboxymethylated starch, graft polymerized cellulose, carboxymethylated cellulose, acrylic, polyvinyl alcohol, acrylamide and polyoxyethylene ≪ / RTI >

The water absorbent resin may be at least one selected from the group consisting of an acrylate polymer crosslinked product, a crosslinked product of a vinyl alcohol-acrylate copolymer, a crosslinked product of a maleic anhydride grafted polyvinyl alcohol, a crosslinked product of an acrylate-methacrylate copolymer, A cross-linked product of a starch-acrylonitrile graft copolymer, a cross-linked product of a starch-acrylonitrile graft copolymer, a cross-linked product of carboxymethylcellulose and an isobutylene-maleic anhydride copolymer And a cross-linking agent, and may include a hygroscopic resin.

The conductive member may include a metal.

The conductive member may be connected or extended to the anode and / or the cathode of the center of the laminated structure of the anode, the separator, and the cathode.

The anode, the separator, and the cathode may have a structure in which one end and the other end of each of the anode, the separator, and the cathode do not cross each other.

The anode, the separator, and the cathode may have a structure in which one end and the other end of the anode, the separator, and the cathode cross each other.

Wherein the separator comprises a first separator and a second separator, wherein one end and the other end of each of the anode, the first separator, and the cathode do not cross each other, and the second separator has an electrode tab It may be a structure that surrounds the side surface.

The electrode stack includes at least one anode, at least one cathode, and at least one separator, wherein the anode, the separator, and the cathode are bonded to each other with the separator interposed between the anode and the cathode, , And the cathode may include an electrode group in which one end and the other end of each electrode do not intersect with each other.

In the electrode group, the polarities of the outermost electrodes may be the same or different.

At least one of the outermost electrodes may be bonded to the separator interposed between the separators.

The electrode stacked body may include an electrode element including any one of an anode and a cathode and a separator, and one of an anode and a cathode and a separator being bonded to each other.

In the electrode element, either the positive electrode or the negative electrode may be interposed between the separators, and either the positive electrode or the negative electrode may be bonded to the separator.

The present invention also provides a battery characterized in that the electrode laminate is embedded in a battery case together with an electrolyte.

The battery case may be a pouch-shaped battery case of a laminate sheet including a metal can or metal layer and a resin layer.

The battery may be a lithium ion polymer battery, a lithium ion battery, or a lithium polymer battery.

The electrode may be a positive electrode or a negative electrode, and may be manufactured by a manufacturing method including the following processes.

In the electrode manufacturing method,

Dispersing or dissolving the binder in a solvent to prepare a binder solution;

Preparing an electrode slurry by mixing the binder solution, the electrode active material, and the conductive material;

Coating the electrode slurry on a current collector;

Drying the electrode; And

And compressing the electrode to a predetermined thickness.

In some cases, the rolled electrode may further be dried.

The binder solution preparation process is a process of dispersing or dissolving the binder in a solvent to prepare a binder solution.

The binder may be any binder known in the art and specifically includes polyvinylidene fluoride (PVdF) or polytetrafluoroethylene (PTFE) A binder such as a fluorocarbon resin binder, a styrene-butadiene rubber, an acrylonitrile-butadiene rubber, a styrene-isoprene rubber, a carboxymethylcellulose (CMC), starch, hydroxypropylcellulose and regenerated cellulose One or more binders selected from the group consisting of a cellulose-based binder, a polyalcohol-based binder, a polyolefin-based binder including polyethylene, polypropylene, a polyimide-based binder, a polyester-based binder, a mussel adhesive, and a silane-based binder Mixtures or copolymers.

The solvent can be selectively used depending on the type of the binder. For example, organic solvents such as isopropyl alcohol, N-methylpyrrolidone (NMP), and acetone and water can be used.

As a specific example of the present invention, a binder solution for a positive electrode may be prepared by dispersing / dissolving PVdF in NMP (N-methyl pyrrolidone), or a styrene-butadiene rubber (SBR) / carboxy methyl cellulose (CMC) To prepare a negative electrode binder solution.

An electrode active material and a conductive material may be mixed / dispersed in the binder solution to prepare an electrode slurry. The electrode slurry thus prepared can be transferred to a storage tank and stored until the coating process. In order to prevent the electrode slurry from hardening in the storage tank, the electrode slurry can be agitated continuously.

The electrode active material may be a positive electrode active material or a negative electrode active material.

Specifically, the cathode active material may be a layered compound such as lithium cobalt oxide (LiCoO ₂ ), lithium nickel oxide (LiNiO ₂ ), or a compound substituted with one or more transition metals; Lithium manganese oxides such as Li _{1 + y} Mn _2-y O ₄ (where y is 0 to 0.33), LiMnO ₃ , LiMn ₂ O ₃ and LiMnO ₂ ; Lithium copper oxide (Li ₂ CuO ₂ ); Vanadium oxides such as LiV ₃ O ₈ , LiFe ₃ O ₄ , V ₂ O ₅ and Cu ₂ V ₂ O ₇ ; Formula _{LiNi 1-y M y O 2} ( where, the M = Co, Mn, Al, Cu, Fe, Mg, B or Ga, y = 0.01 ~ 0.3 Im) Ni site type lithium nickel oxide which is represented by; Formula _{LiMn 2-y M y O 2} ( where, M = Co, Ni, Fe , Cr, and Zn, or Ta, y = 0.01 ~ 0.1 Im) or Li ₂ Mn ₃ MO ₈ (where, M = Fe, Co, Ni, Cu, or Zn); LiMn ₂ O _{4 in} which a part of Li in the formula is substituted with an alkaline earth metal ion; Disulfide compounds; Fe ₂ (MoO ₄ ) ₃ , and the like. However, the present invention is not limited to these.

In a non-limiting embodiment of the present invention, the electrode active material may include a lithium metal oxide having a spinel structure represented by the following chemical formula (1) as a cathode active material.

Li _x M _y Mn _{2 - y} O _{4 - z z} (1)

Wherein 0 < y < 2, 0 z < 0.2,

M is at least one element selected from the group consisting of Al, Mg, Ni, Co, Fe, Cr, V, Ti, Cu, B, Ca, Zn, Zr, Nb, Mo, Sr, Sb, W, ;

A is one or more of an anion of -1 or -2.

The maximum substitution amount of A may be less than 0.2 mol%. In a specific embodiment of the present invention, A may be at least one anion selected from the group consisting of halogens such as F, Cl, Br, I, S and N.

By substituting these anions, the binding force with the transition metal is improved and the structural transition of the compound is prevented, so that the lifetime of the battery can be improved. On the other hand, if the substitution amount of the anion A is too large (t? 0.2), the life characteristic is deteriorated due to the incomplete crystal structure, which is not preferable.

Specifically, the oxide of the formula (1) may be a lithium metal oxide represented by the following formula (2).

Li _x Ni _y Mn _2-y O ₄ (4)

In the above formula, 0.9? X? 1.2 and 0.4? Y? 0.5.

More specifically, the lithium metal oxide may be LiNi _0.5 Mn _1.5 O ₄ or LiNi _0.4 Mn _1.6 O ₄ .

The negative electrode active material may include, for example, carbon such as non-graphitized carbon or graphite carbon; _{Li x Fe 2 O 3 (0≤x≤1} ), Li x WO 2 (0≤x≤1), Sn x Me 1-x Me 'y O z (Me: Mn, Fe, Pb, Ge; Me' : Metal complex oxides such as Al, B, P, Si, Group 1, Group 2, Group 3 elements of the periodic table, Halogen, 0 &lt; x &lt; Lithium metal; Lithium alloy; Silicon-based alloys; Tin alloy; _{SnO, SnO 2, PbO, PbO} 2, Pb 2 O 3, Pb 3 O 4, Sb 2 O 3, Sb 2 O 4, Sb 2 O 5, GeO, GeO 2, Bi 2 O 3, Bi 2 O 4, Bi ₂ O ₅ and the like; Conductive polymers such as polyacetylene; Li-Co-Ni-based material, and the like.

In a non-limiting embodiment of the present invention, the electrode active material may include a lithium metal oxide as a negative electrode active material, and the lithium metal oxide may preferably be represented by the following chemical formula (3).

Li _a M ' _b O _{4-ca c} (3)

In the above formula, M 'is at least one element selected from the group consisting of Ti, Sn, Cu, Pb, Sb, Zn, Fe, In, Al and Zr;

a and b are 0.1? a? 4; Is determined according to the oxidation number of M 'in the range of 0.2? B? 4;

c is determined according to the oxidation number in the range of 0? c <0.2;

A is one or more of an anion of -1 or -2.

The oxide of the formula (3) may be represented by the following formula (4).

Li _a Ti _b O ₄ (4)

In the above formula, 0.5? A? 3, 1? B? 2.5.

The lithium metal oxide may be Li _0.8 Ti _2.2 O ₄ , Li _2.67 Ti _1.33 O ₄ , LiTi ₂ O ₄ , Li _1.33 Ti _1.67 O ₄ , Li _1.14 Ti _1.71 O _4, or the like. However, the present invention is not limited to these.

In a non-limiting embodiment of the present invention, the lithium metal oxide may be Li _1.33 Ti _1.67 O ₄ or LiTi ₂ O ₄ . Li _1.33 Ti _1.67 O ₄ has a spinel structure with less change in crystal structure during charging and discharging and excellent reversibility.

The lithium metal oxide can be produced by a production method known in the art and can be produced by, for example, a solid phase method, a hydrothermal method, a sol-gel method, or the like.

The lithium metal oxide may be in the form of secondary particles in which primary particles are aggregated.

The particle size of the secondary particles may be 200 nm to 30 탆.

If the particle diameter of the secondary particles is less than 200 nm, a large amount of solvent is required in the negative electrode slurry production process, which lowers productivity and is not preferable because it is difficult to control the moisture content. When the particle size of the secondary particles is more than 30 占 퐉, the diffusion rate of lithium ions is slow and it is difficult to realize a high output, which is not preferable.

The lithium metal oxide may be contained in an amount of 50 wt% or more to 100 wt% or less based on the weight of the entire negative electrode active material.

When the content of lithium titanium oxide is 100 wt% with respect to the weight of the entire negative electrode active material, it means that the negative active material is composed of lithium titanium oxide alone.

The conductive agent is not particularly limited as long as it has electrical conductivity without causing chemical changes in the battery, and examples thereof include graphite such as natural graphite and artificial graphite; Carbon black such as carbon black, acetylene black, ketjen black, channel black, furnace black, lamp black, and summer black; Conductive fibers such as carbon fiber and metal fiber; Metal powders such as carbon fluoride, aluminum, and nickel powder; Conductive whiskey such as zinc oxide and potassium titanate; Conductive metal oxides such as titanium oxide; Conductive materials such as polyphenylene derivatives and the like can be used.

A filler or the like may be optionally added to the electrode slurry as required. The filler is not particularly limited as long as it is a fibrous material without causing a chemical change in the battery, and examples thereof include olefin-based polymerizers such as polyethylene and polypropylene; Fibrous materials such as glass fiber, carbon fiber and the like can be used.

The process of coating the electrode slurry on the current collector is a process in which the electrode slurry is passed through a coater head to coat the current collector with a predetermined pattern and a constant thickness.

The method of coating the electrode slurry on the current collector may include a method of uniformly dispersing the electrode slurry on a current collector using a doctor blade or the like, a die casting method, a comma coating method ), Screen printing, and the like. Alternatively, the electrode slurry may be bonded to the current collector by molding on a separate substrate, followed by pressing or lamination.

The current collector is not particularly limited as long as it has high conductivity without causing a chemical change in the battery. For example, the current collector may be made of copper, stainless steel, aluminum, nickel, titanium, sintered carbon, a surface of copper or stainless steel A surface treated with carbon, nickel, titanium, silver or the like, an aluminum-cadmium alloy, or the like can be used. The positive electrode current collector may be formed into various shapes such as a film, a sheet, a foil, a net, a porous body, a foam, a nonwoven fabric, or the like by forming fine irregularities on the surface to enhance the bonding force of the positive electrode active material. Specifically, the cathode current collector may be a metal current collector including aluminum, and the anode current collector may be a metal current collector including copper. The electrode current collector may be a metal foil, and may be an aluminum foil or a copper foil.

The drying process is a process of removing the solvent and moisture in the slurry to dry the slurry coated on the metal current collector. In a specific example, the drying process is performed within one day in a vacuum oven at 50 to 200 ° C.

After the drying process, a cooling process may be further included, and the cooling process may be a slow cooling process to room temperature to form a recrystallized structure of the binder.

In order to increase the capacity density of the coated electrode and increase the adhesion between the current collector and the active materials, an electrode can be passed between two rolls heated at a high temperature and compressed to a desired thickness. This process is called the rolling process.

The electrode can be preheated before passing the electrode between two heated, heated rolls. The preheating process is a process of preheating the electrode before it is introduced into the roll to increase the compression effect of the electrode.

The electrode having completed the rolling process as described above can be dried within one day in a vacuum oven at 50 to 200 DEG C in a range satisfying a temperature equal to or higher than the melting point of the binder. The rolled electrode may be cut to a certain length and then dried.

After the drying process, a cooling process may be further included, and the cooling process may be a slow cooling process to room temperature to form a recrystallized structure of the binder.

The polymer membrane is a separator separating the anode and the cathode. When a solid electrolyte such as a polymer is used as the electrolyte, the solid electrolyte may also serve as a separator.

The separator is made of an insulating thin film having high ion permeability and mechanical strength. The pore diameter of the separator is generally 0.01 to 10 mu m and the thickness is generally 5 to 300 mu m.

Such separation membranes include, for example, olefinic polymers such as polypropylene, which are chemically resistant and hydrophobic; A sheet or nonwoven fabric made of glass fiber, polyethylene or the like; Kraft paper and the like are used. Representative examples currently on the market include the Celgard ^R 2400, 2300 (from Hoechest Celanese Corp.), polypropylene separator (from Ube Industries Ltd. or Pall RAI), and polyethylene series (from Tonen or Entek).

In some cases, a gel polymer electrolyte may be coated on the separation membrane to increase the stability of the cell. Representative examples of such a gel polymer include polyethylene oxide, polyvinylidene fluoride, and polyacrylonitrile.

The electrode laminate may include both a jelly-roll type electrode assembly (or a wound electrode assembly), a stacked electrode assembly (or a stacked electrode assembly), or a stacked & folded electrode assembly having a structure known in the art.

In this specification, the stacked & folded type electrode assembly is a method of arranging unit cells having a structure in which a separator is interposed between an anode and a cathode on a separator sheet, folding and winding the separator sheet A stack &amp; folding type electrode assembly.

The electrode laminate may include an electrode laminate having a structure in which one of an anode and a cathode is laminated by a method of being laminated in a structure in which they are interposed between the separators by thermal fusion or the like.

As the non-aqueous electrolyte, a nonaqueous electrolyte, a solid electrolyte, an inorganic solid electrolyte, or the like is used.

Examples of the nonaqueous electrolyte include N-methyl-2-pyrrolidinone, propylene carbonate, ethylene carbonate, butylene carbonate, dimethyl carbonate, diethyl carbonate, ethyl methyl carbonate , Gamma -butyrolactone, 1,2-dimethoxyethane, 1,2-diethoxyethane, tetrahydroxyfuran, 2-methyltetrahydrofuran, dimethylsulfoxide, 1,3-dioxolane, Diethyl ether, formamide, dimethyl formamide, dioxolane, acetonitrile, nitromethane, methyl formate, methyl acetate, phosphoric acid triester, trimethoxymethane, dioxolane A non-protonic organic solvent such as an ether, a methyl pyrophosphate, or an ethyl propionate is used as the solvent, a sulfone, a methyl sulfolane, a 1,3-dimethyl-2-imidazolidinone, a propylene carbonate derivative, a tetrahydrofuran derivative, .

Examples of the organic solid electrolyte include a polymer electrolyte such as a polyethylene derivative, a polyethylene oxide derivative, a polypropylene oxide derivative, a phosphate ester polymer, an agitation lysine, a polyester sulfide, a polyvinyl alcohol, a polyvinylidene fluoride, Polymers containing ionic dissociation groups, and the like can be used.

Examples of the inorganic solid electrolyte include Li ₃ N, LiI, Li ₅ NI ₂ , Li ₃ N-LiI-LiOH, LiSiO ₄ , LiSiO ₄ -LiI-LiOH, Li ₂ SiS ₃ , Li ₄ SiO ₄ , Nitrides, halides and sulfates of Li such as Li ₄ SiO ₄ -LiI-LiOH and Li ₃ PO ₄ -Li ₂ S-SiS ₂ can be used.

The lithium salt is a material that is readily soluble in the non-aqueous electrolyte, for example, LiCl, LiBr, LiI, LiClO 4, LiBF 4, LiB 10 Cl 10, LiPF 6, LiCF 3 SO 3, LiCF 3 CO 2, LiAsF _{6, LiSbF 6, LiAlCl 4,} CH 3 SO 3 Li, CF 3 SO 3 Li, LiSCN, LiC (CF 3 SO 2) 3, (CF 3 SO 2) 2 NLi, chloroborane lithium, lower aliphatic carboxylic acid lithium, 4-phenylborate, imide, and the like can be used.

For the purpose of improving the charge-discharge characteristics and the flame retardancy, the electrolytic solution may contain at least one selected from the group consisting of pyridine, triethylphosphite, triethanolamine, cyclic ether, ethylenediamine, n-glyme, Benzene derivatives, sulfur, quinone imine dyes, N-substituted oxazolidinones, N, N-substituted imidazolidines, ethylene glycol dialkyl ethers, ammonium salts, pyrrole, 2-methoxyethanol, . In some cases, halogen-containing solvents such as carbon tetrachloride and ethylene trifluoride may be further added to impart nonflammability. In order to improve the high-temperature storage characteristics, carbon dioxide gas may be further added. FEC (fluoro-ethylene carbonate, PRS (propene sultone), FPC (fluoro-propylene carbonate), and the like.

The present invention also provides a battery pack including the battery as a unit cell.

The present invention also provides a device using the battery pack as an energy source.

The device may be selected from the group consisting of a cell phone, a portable computer, a smart phone, a smart pad, a netbook, a LEV (Light Electronic Vehicle), an electric vehicle, a hybrid electric vehicle, a plug-in hybrid electric vehicle, .

The structure and manufacturing method of such a device are well known in the art, so a detailed description thereof will be omitted herein.

INDUSTRIAL APPLICABILITY As described above, the electrode laminate according to the present invention includes the liquid electrolyte absorbing porous member connected to the electrode or extending from the electrode, whereby the degree of electrolyte impregnation can be measured from the outside of the cell, May not affect the operation of the battery.

1 is a schematic view of a battery including an electrode laminate according to one embodiment of the present invention.

Hereinafter, the present invention will be described in detail with reference to the drawings, but the scope of the present invention is not limited thereto.

1 is a schematic view of a battery including an electrode stacked body according to one embodiment of the present invention.

1, a battery 10 includes an electrode 110, a separation membrane (not shown), a liquid electrolyte absorbing porous member 120, a liquid electrolyte non-absorbing first conductive member 131, An electrode stack 100 composed of a member 132, a battery case 200, and an electrolyte (not shown).

The electrode stacked body 100 is embedded in the battery case 200 in a state of being impregnated with an electrolyte.

The porous member 120 is positioned at the center of the electrode stack 100 and the first conductive member 131 extends from one end of the porous member 120 to form an electrode 110 positioned at the center of the electrode stack 100 And the second conductive member 132 extends from the other end of the porous member 120 and is exposed to the outside of the battery case 200.

The porous member 120 is formed only inside the battery case 200 and before the sealing portion 210 of the battery case 200 so that the electrolyte leaks to the outside of the battery case 200 through the porous member 120 .

Since the porous member 120 absorbs the electrolyte and has conductivity, the first conductive member 131 and the second conductive member 132 are electrically connected to each other.

Therefore, whether the electrolyte is impregnated into the center of the electrode stack body 100 can be confirmed by measuring the resistance or current through the second conductive member 132.

While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments.

Claims (20)

At least one anode;
One or more cathodes;
At least one separator interposed between the anode and the cathode; And
A porous electrolyte-absorptive porous member connected to or extending from the electrode;
And an electrode layer laminated on the electrode layer. The electrode laminate according to claim 1, further comprising a liquid electrolyte non-absorbent conductive member connected or extended at one end of the porous member and connected to or extending from the electrode. The electrode laminate according to claim 2, further comprising a liquid electrolyte non-absorbent conductive member connected or extended at the other end of the porous member. The electrode laminate according to claim 1, wherein the porous member has a mesh structure. The electrode assembly according to claim 4, wherein the porous member comprises at least one member selected from the group consisting of a polyolefin resin, a fluorine resin, a polyester resin, an engineering plastic, a super-engineering plastic, sieve. The electrode laminate according to claim 2, wherein the conductive member comprises a metal. The electrode laminate according to claim 1, wherein the conductive member is connected to or extends from an anode and / or a cathode in the center of the laminated structure of the anode, the separator, and the cathode.  The electrode stack body according to claim 1, wherein each of the anode, the separator, and the cathode has one end and the other end that do not intersect with each other. The electrode laminate according to claim 1, wherein one end and the other end of the anode, the separator, and the cathode cross each other. The method according to claim 1, wherein the separation membrane comprises a first separation membrane and a second separation membrane,
Wherein one end and the other end of each of the anode, the first separator, and the cathode do not cross each other, and the second separator surrounds a side surface of the electrode on which the electrode tab is not formed. The electrode assembly according to claim 1, wherein the electrode stack includes at least one anode, at least one cathode, and at least one separator, wherein the anode, the separator, and the cathode are bonded to each other with the separator interposed between the anode and the cathode Wherein the positive electrode, the separator, and the negative electrode each include an electrode group in which one end and the other end of each of the positive electrode, the separator, and the negative electrode do not cross each other. The electrode stack body according to claim 11, wherein the outermost electrodes of the electrode group have the same or different polarities. 13. The electrode laminate according to claim 12, wherein at least one of the outermost electrodes is bonded to the separator interposed between the separators. The electrode laminate according to claim 1, wherein the electrode laminate includes any one of an anode and a cathode and a separator, and includes an electrode element in which one of an anode and a cathode and a separator are bonded to each other. 15. The electrode laminate according to claim 14, wherein one of the positive electrode and the negative electrode is interposed between the separators, and either the positive electrode or the negative electrode is bonded to the separator. A battery, wherein the electrode laminate according to any one of claims 1 to 15 is embedded in a battery case together with an electrolyte. The battery according to claim 16, wherein the battery case is a pouch-shaped battery case of a laminate sheet including a metal can or metal layer and a resin layer. 17. The battery according to claim 16, wherein the battery is a lithium ion polymer battery or a lithium ion battery or a lithium polymer battery. A battery pack comprising the battery according to claim 16. A device comprising a battery pack according to claim 19.

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