[Technology]Mutual citations and related application (s)
This application claims the benefit of priority based on the Korea Patent Application No. 11 dated May 30, Korea Patent Application No. 10-2017-01633157 November 2018 and May 27, 2017 No. 10-2018-0148559, that of Korea Patent Application everything described in the literature are included as part of the specification.
The present invention relates to a multi-layer electrode, and a method of manufacture, and more particularly to a multi-layer electrode and a method of manufacturing that can improve the performance and durability of the battery of the electrodes.

[Background Art]

As the technology developed, and the demand for multi-device increase the demand for energy rechargeable battery as there is increasing rapidly, with such a secondary battery, high energy density and voltage, long cycle life, self-discharge rate is low lithium secondary battery is It is commercially available and widely used.

These ratyum secondary earth is as a cathode active material, lithium-containing cobalt oxide of symptoms crystal structure (Nishi (: 002 ), the layered crystal structure of senior and 102 , the spinel crystal structure of your ¾ 204 Lyrium containing manganese oxides such as, Lyrium nickel oxide (Nishi 0 2 is generally used in a). In addition, as a negative electrode active material used is a carbonaceous substance mainly Recently, the mixed use of the high-energy lithium having 10 times more effective dose than the carbon-based material to the increasing demand of the secondary battery based material, a silicon oxide-based materials have been considered .

On the other hand, this Lyrium after the electrode used in the secondary battery, the electrode active material coated with a slurry containing an electrode active material on at least one surface of the current collector is produced by drying. In this case, and generally it comprises a single electrode coating to , the electrode active material layer coating is conducted by coating the die having a single discharge. 1 is a view showing a state that the coating layer 12 of the electrode active material slurry of a single layer of a coating die (10) having on an electrode current collector 11, a discharge portion schematically.

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However, as the high is required load electrode is gradually and used in the battery of the loading, when producing an electrode including a single electrode coating, as well as difficult to its production, the performance of the durability and the battery of the electrodes is reduced, the problem It can be.

[Detailed Description of the Invention]

Technical Problem [5]

Thus, the problem to be solved by the present invention is to improve the electrode active material layer and the electrode and the adhesion of the entire house and providing a multi-layer electrode and a method of manufacturing that can improve the rate characteristics of the battery during discharge.

[Technical Solution]

According to the 10th aspect of the invention, the electrode current collector; And contains the electrode is sequentially applied to the entire side or both sides of a house two or more layers in the electrode active material layer,

The electrode active material layers, each comprising a carbon-based material, a binder, and a silicone-based material ,

15 wherein, based on the formation direction of the electrode active material layer, a cross from the adjacent electrode active material layer, the relatively amount of content and the binder of the carbonaceous material of the electrode active material layer positioned on the side close to the whole of the current collector, relative to the electrode from the current collector is greater than the content of the binder content and the carbon-based material of the electrode active material layer positioned on the far side,

20 relative to the amount of the silicon-based material of the electrode active material layer positioned on the far side from the entirety of the current collector, there is provided a number of multi-layer electrodes than the content of the silicon-based material of the electrode active material layer positioned on the side relatively close to the whole of the current collector.

Here, the carbon-based material, an artificial graphite, natural graphite, hard carbon, soft

Can contain an 25 carbon, carbon black, acetylene black, Ketjen black, super-graphene and at least one selected from the group consisting of a fiber carbon.

In addition, the silicon-based material, ¾ (0 <於2), pure卵), high temperature (11 0 can contain at least one element selected from the group consisting of. In addition, the binder, polyvinylidene fluoride, polyvinyl alcohol,

30 carboxymethylcellulose in Woods 01, starch, hydroxypropylcellulose, Woods, playing cellulose

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One member selected from the group consisting of butadiene rubber, fluorine rubber-to Woods, polyvinylpyrrolidone, tetrafluoroethylene Cellulofine ethylene, polyethylene, polypropylene, ethylene-propyl ten-diene terpolymer (), sulfonated EPm, styrene It may include more.

In addition, the multi-layer electrode may include an electrode active material layer be from 2 to 4 layers. In a more specific example, the multi-layer electrode (however, the first to the II electrode active material layer farther away from the current collector comprises a carbon-based material and a binder in an amount which decreases successively 11 a is an integer from 2 to 4) and including,

The electrode active material layer II is the 11-1 can contain the carbon-based material and the carbon-based material and a binder in an amount of 0% to 99%, based on the respective weight percentages of the binder contained in the electrode active material layer, respectively.

In this specific example in accordance with the electrode layer, and the first to the II electrode active material layer includes a silicon-based material in an amount that the farther from the current collector increases sequentially,

The 11-1 electrode active material layer can contain a silicon-based material in an amount of 0% to 9%, based on the content (% by weight) of the silicon-based material included in the electrode active material layer II.

In addition, the multi-layer electrode is a cathode days.

On the other hand, the content of the According to another aspect of the invention, the electrode entire side or both sides of a house, a method of manufacturing a multi-layer electrode comprising: applying a layer of one electrode active material slurry 2 layer, and the electrode active material slurry are constituents are different and are each at the same time ejecting through the respective discharge port of each of the electrode active material slurry are die having a plurality of ejection, of the multi-layer electrode to form the electrode current collector onto the layer of an electrode active material slurry stacked in two or more layers this manufacturing method is provided.

Here, the whole of the electrode active material, based on the layers are each carbon-based material, the layer forming direction of the binder, and includes a silicon-based material, the electrode active material slurry of the slurry, of the layers of the mutually adjacent electrode active material slurry, relative to the current collector on the amount and content of the binder of the carbonaceous material of the electrode active material slurry layer which is located on the side close to, on the far side relative to the full-butanone to the current collector

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It is greater than the content of the content and the binder of the carbon-based material of the position electrode active material slurry layer, relative to the amount of the silicon-based material layer of the electrode active material slurry which is located on the far side from the entirety of the current collector, relative to the total of the current collector there maneungeot days than the content of the silicon-based material of the electrode active material slurry layer which is located on the side close.

According to another aspect of the invention, the electrode assembly including a separator interposed between the positive electrode, a negative electrode and the positive electrode and the negative electrode including the multi-layered electrode; The non-aqueous electrolyte for impregnating the electrode assembly; And in the lithium secondary battery comprising a battery case which incorporates the non-aqueous electrolyte and the electrode assembly it is provided.

And, according to the present invention, it is characterized in that it comprises a battery module, the battery pack including the same, and such a battery pack comprises a lithium secondary battery of the above-mentioned present invention as a unit cell as a power source device is provided with . Here, the device is an electric vehicle, hybrid electric vehicles, plug-in hybrid electric vehicle system for days or power storage.

【Effects of the Invention】

According to one embodiment of the invention, the electrodes being at home, the entire content of the content and the binder of the carbonaceous material of the electrode active material layer positioned on the side close to the relatively a lot, the improved electrode active material layer and the electrode adhesion strength of the whole and a house the durability of the electrode can be improved.

And, the content of the silicon-based material of the electrode active material layer positioned on the far side from the current collector is being relatively a lot to improve upon the discharge rate characteristic can improve the performance of the battery.

[Brief description of drawings]

Following figures attached to the present specification is to illustrate the preferred inspection of the invention, the components that serve to further understand the teachings of the present invention with the content of the above-described invention, the invention is only to details set forth in those figures is limited shall not be interpreted.

1 is on the current collector according to the prior art, a state that the coating layer of the electrode active material slurry of a single layer of a coating die having a single discharge 2019/107930 1 »(1 ^ 1 {2018/014851

A schematic view of.

Figure 2 is a schematic view of a state that their coating of the electrode active material slurry having a three-layer layer of a coating die having on the current collector in accordance with an embodiment of the invention, the three parts of the discharge.

3 is a view schematically showing a shape to be coated, O of the electrode active material slurry of the four-layer layer of a coating die having on the current collector in accordance with an embodiment of the invention, the four parts of the discharge.

[Mode for Carrying out the invention]

With reference to the drawings the present invention will be described in detail. The specification and are should not be construed as limited to the term general and dictionary meanings used in the claims , the inventor that can adequately define terms to describe his own invention in the best way It interpreted based on the meanings and concepts corresponding to technical aspects of the present invention on the basis of the principle.

Thus, merely nothing but in the embodiment described in the specification, examples and guseongeun The most preferred of the invention as set forth in the figures one example, by not intended to limit the scope of the present invention, a variety of equivalents that can according made thereto in the present application when and it should be understood that modification to iteulsu.

Multilayer electrode according to one aspect of the invention, the electrode current collector; And contains the electrode is sequentially applied to the entire side or both sides of a house two or more layers in the electrode active material layer '

The electrode active material layers, each comprising a carbon-based material, a binder, and a silicone-based material,

Based on the formation direction of the electrode active material layer, the mutually adjacent electrode active material layers from, the relatively amount of content and the binder of the carbonaceous material of the electrode active material layer positioned on the side close to the whole of the current collector, relative to the current collector It is greater than the content of the binder content and the carbon-based material of the electrode active material layer positioned on the side distant from the current,

Relative to the amount of the silicon-based material of the electrode active material layer positioned on the far side from the entirety of the current collector, relative to the side close to the whole of the current collector 2019/107930 1 »(1 ^ 1 {2018/014851

It is greater than the content of the silicon-based material of the electrode active material layer positioned.

After the general application of the electrode active material slurry having a single component in the current collector, it was dried by producing an electrode, in accordance with and the required loading electrode, if the electrode produced in the same way as in the prior art, as well as difficult to that produced , a problem of the durability performance of the cell and of the electrode to be lowered was caused.

However, as to the multilayer electrode of the one side, the current collector being a full close side of the content of the content and the binder of the carbonaceous material of the electrode active material layer positioned relatively a lot, the improved adhesion of the whole and the electrode job durability of the electrode by this can be improved, the current collector the content of silicon-based material of the electrode active material layer positioned on the far side in the whole relative to the lot, is improved when the discharge rate characteristics of the battery was confirmed that can improve the performance of the battery.

Here, the carbon-based material, an artificial graphite, natural graphite, hard carbon, soft carbon, carbon black, acetylene black, Ketjen black, super? , Yes, but can include a pin and a fiber carbon, but is not limited to these.

In addition, the silicon-based material is ¾ (0 <於2), pure water (卵), or an alloy (11 0 , but can include, but is not limited to these. In addition, the binder is polyvinylidene fluoride, polyvinyl alcohol, carboxymethylcellulose by Woods 010, starch, and hydroxypropyl cellulose in the woods, playing cellulite in Woods, polyvinylpyrrolidone, tetrafluoroethylene, polyethylene, polypropylene, ethylene-profile X-diene terpolymer (卵·), sulfonated敗, styrene-butadiene rubber or fluorine rubber and the like may include, in addition to a variety of polymers are known that can provide an electrode collector and an electrode active material, the interlayer adhesive strength of It can contain a material.

In the one side than the specific example of the multilayer electrode according to the multi-layer electrode may be comprise two to four layers, or from 2 to 3 layers of the electrode active material layer formed on the current collector.

More specifically, the first to the II electrode active material layer (where, II is from 2 to 4, or 2 to 3 that the multilayer electrode is farther away from the current collector comprises a carbon-based material and a binder in an amount that increases sequentially is an integer) it can be include.

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As this stacked successively from 2 to 4 layers, from 2 to or from the third layer of the electrode active material layer, any of the II electrode active material layer is formed closer to the full and this adjacent the current collector 11-1 included in the electrode coating carbon based on the substance and respectively the content of the binder (wt.%) it can be included in a reduced amount which is from 0 to 99% of the carbon-based material and a binder.

In a more specific embodiment, when the electrode active material of a sequentially laminated two-layer layers are formed, a second electrode active material layer In the adjacent and the content of the carbon-based material contained in the first electrode active material layer formed closer to the current collector (wt. based on the%) may include a carbon-based material with a reduced content of which is from 0 to 99%, or 80 to 98%, or 90 to 97%. In addition, the second electrode active material layer In the adjacent and the current collector on the basis of the content of the binder (wt%) contained in the first electrode coating overall is formed closer to 0 to 99%, or 20 to 80%, or 40 to 60% rodoe may be include a binder, at a reduced content.

Thus, in the high load electrode as compared to the electrode active material layer adjacent to, the farther from the current collector electrode active material is from 2 to 4 layers including a carbon-based material and a binder in an amount which decreases successively each layer are sequentially laminated, the electrode active layers can have excellent adhesion and durability and overall effectiveness of the entire electrode current collector.

The above-described and in the electrode layer, the first to the II electrode active material layer may include a silicon-based material in an amount that the farther from the current collector increases sequentially. In addition, sequentially stacked from 2 to 4 layers, from 2 to or from the third layer of the electrode active material layer, any of the 11-1 electrode active material layer included in the electrode active material layer formed II distant than the current collector and adjacent these silicone the content of the material (which can include a silicon-based material in an amount of 0 to 99%, based on the weight «.

In a more specific embodiment, the sequence for the laminated two-layer electrode active material layers are formed, the first electrode active material layer is the content of the silicon-based material included in the first electrode active material layer formed farther than the total, while the adjacent this electrode collector (wt% ) as a reference it can contain a silicon-based material with a reduced content of which is from 0 to 99%, or 0-10%, or 0-5%.

Thus, the farther from the electrode active material layer contrast, the current collector adjacent 2019/107930 1 »(1 ^ 1 {2018/014851

As the electrode active material is from 2 to 4 layers including a silicon-based material in an amount of sequentially increased to increase sequentially jeokjeung, while maintaining the above-mentioned durability in a high-loaded electrode, the rate characteristics and the performance of the battery can be further improved.

Multilayer electrode in accordance with one aspect as described above, for example, can be used as a cathode of the secondary battery Lyrium.

On the other hand, an illustration showing a state 2, and which also has three eunbon to one embodiment the current collector according to the embodiment of the invention, parts of the plurality of discharge this two-layer or more layers of electrode active material slurry are coated schematically.

2 and 3, the method of manufacturing a multilayer electrode in accordance with another aspect of the invention, on one or both surfaces of the electrode collector 110, a layer of electrode active material slurry having two or more layers (120, 130, 140, 150) the method for producing the multi-layer electrode comprising the step of applying the electrode active material slurry are different from the content of the constituent components, and each of the electrode active material slurry are, respectively, through the respective tojul of gatneundayi 100, a plurality of ejecting parts of At the same time comprises the steps tojul. This allows, to form the electrode current collector onto the two-layer or more, or 2 to 4 layers, or layers of successively deposited electrode active material slurry, 2 to 3 layers, one can form a multilayer electrode according to one aspect already described.

Although the drawings merely shows only the layer of the electrode active material slurry having a three-layer or four-layer, and thus are not limited thereto.

Thus, by discharging at the same time through a single die having a plurality of parts of the plurality of discharge electrode active material slurry was coated by a layer of electrode active material slurry and facilitate the loading of the electrode, and was able be produced efficiently. At this time, the electrode active material slurry and a counter layer are respectively a carbon-based material, a binder, and comprises a silicon-based material, based on the formation direction of the electrode active material of the slurry layer, the cross from the adjacent electrode active material layers of the slurry relative to the current collector the content of the content and the binder of the carbonaceous material of the electrode active material slurry layer which is located on the side close to the full, relatively more amount of content and the binder of the carbon-based material layer of the electrode active material slurry which is located on the far side from the entirety of the current collector many, the relatively amount of the silicon-based material layer of the electrode active material slurry which is located on the far side from the entire current collector, the electrode relatively 2019/107930 1 »(1 ^ 1 {2018/014851

Home entirety haneungeot characterized in that the number of days is greater than the content of the silicon-based material of the electrode active material slurry layer which is located on the side closer to.

Thus, the improved adhesion of the total and the current collector as described above may be an improvement in the durability of the electrode, is improved when the discharge rate characteristics of the battery can improve the performance of the battery.

On the other hand, for the electrode active material such as carbon-based material, a binder, and a silicone-based material that can be included in the slurry or the like, so hanba described with respect to multi-layer electrodes on one side, an additional description thereof will be omitted decided.

According to another aspect of the invention, the electrode assembly including a separator interposed between the positive electrode, negative electrode and already the anode and the cathode comprises a multi-layer electrode of the above-described one days side; The non-aqueous electrolyte for impregnating the electrode assembly; And land Lyrium secondary battery is provided including a battery case which incorporates the non-aqueous electrolyte and the electrode assembly.

In this case, the positive electrode is composed of a positive electrode active material layer formed on a positive electrode collector and its at least one surface. The positive electrode active material contained in this positive electrode active material layer can contain a transition metal oxide Lyrium represented by formula (I) or (II) below.

Wherein

!! is when, the,, 00, 0, V, II, (, 8, Ca, 1 \\, å ·, ¾, ¾10,, ¾, 1, and which is at least one element selected from the group consisting of;

Show a valence of -1 or -2 is at least one anion;

0.9 <<1.2, 0今<2, 0 < 2 is <0.2.

(1) Needle ¾1 '¾ - O ^ 0 21 3 / Show / (2)

Wherein

Is a 義;

Is, Ti, 0 0, when, (X, 1 \ 1 I, seedlings, 0, · å, 211 and second transition period is at least one selected from the group consisting of the metal!;

Is tt 4 ,部3, ¥ 3 ^ 0 and 3 anion is at least one selected from the group consisting of;

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0< <1， 0今<0.02， 0 33 ) and to prepare a negative electrode.

Example 2: Preparation of multi-layer electrodes 2 Preparation of charging electrode

Artificial graphite and natural graphite at a weight ratio of 90: with respect to 100 parts by weight of the negative electrode is a graphite mixture is mixed with 10 active material, 1 part by weight of carbon black as the conductive material, the 2.6 parts by weight of polyvinylidene fluoride as a first binder, and as a thickening agent
mixed 1.1 parts by weight, and by the addition of water as a solvent to prepare a first negative electrode slurry. . A graphite mixture and the silicone oxide mixed with 10 (⑴ 94: artificial graphite and natural graphite 90 in a weight ratio with respect to 100 parts by weight of the negative electrode active material mixed in a weight ratio of 6, 1.5 of carbon black as a conductive material, parts by weight, as a second binder of styrene - 2.0 parts by weight of a thickening agent of the butadiene rubber, 61),
1.1 parts by weight were mixed, and preparing a second negative electrode slurry by addition of water as a solvent.

2, the first and second negative electrode slurry through the supplying of the die having a single discharge portion was discharged at the same time on each of copper foil. This allows for the copper foil 2019/107930 1 »(1 ^ 1 {2018/014851

A first negative electrode slurry and the second slurry for the negative electrode 5: At the same time coated with a thickness ratio of 5 Total 300 | M was applied to the thickness. This was then rolled to produce a negative electrode and dried.

Comparative Example 1 Preparation of single-layer

A graphite mixture and the silicone oxide mixed with 10 (⑴ 97: artificial graphite and natural graphite 90 in a weight ratio with respect to 100 parts by weight of the cathode active material mixed with 3 weight ratio, 1.5 of carbon black as a conductive material, parts by weight of binder as a thickener, and 2.3 parts by weight of polyvinylidene fluoride
mixture 1.1 parts by weight, and the mixture was mixed with water as a solvent, preparing a negative electrode slurry.

It was coated on copper foil as the negative electrode slurry was coated to a thickness of 300 ,.. After the dried rolled (for was to prepare a negative electrode.

Experimental Example 1: Adhesion Evaluation

The obtained negative electrode through the above-described embodiments or comparative examples 70 ™ (length) X

25 ™ (width) of the negative electrode and the separator prepared by cutting with using the press 70 4! 3 A specimen was produced by lamination under the conditions. It was fixed by attaching the prepared specimen to a glass plate using a double-faced tape was arranged to face the negative electrode wherein the glass sheet. A membrane portion of the sample 25 ° (: 25 ^ / in 111 111 to measure the strength at which the peeled and this at an angle of 180 ° at a rate.

It was evaluated in the adhesion of the electrode through this peel strength, to the evaluation results are shown in Table 1. The clearance. To such peel strength evaluation is carried out 10 times, following Table 1 shows the scope of the assessment carried out 10 times.

TABLE 1

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In Referring to Table 1, the embodiment of the electrodes, it was confirmed that the comparative example electrode being compared to the expression of high adhesive strength. Further , content in the whole composition of the silicon-based electrode active material was identified to be the same, the, embodiment of the electrode the rate characteristics expressed during at least with such high adhesive strength, the comparative example the same level discharge. [Description of Symbols]

10: a discharging portion gatneundayi

The current collector: 11110

12: an electrode active material slurry layer

100: a plurality of ejection parts gatneundayi

120: layer of the first electrode active material slurry

130: second electrode layer slurry hwalmul Hanging

140: The three-electrode active material slurry layer

150: layer of the fourth electrode active material slurry

Claims

11. The
Electrode current collector; And contains the electrode is sequentially applied to the entire side or both sides of a house two or more layers in the electrode active material layer,

The electrode active material layers, each comprising a carbon-based material, a binder, and a silicone-based material,

Based on the formation direction of the electrode active material layer, the mutually adjacent electrode active material layers from, the relatively amount of content and the binder of the carbonaceous material of the electrode active material layer positioned on the side close to the whole of the current collector, relative to the current collector It is greater than the content of the binder content and the carbon-based material of the electrode active material layer positioned on the side distant from the current,

Relative to the current collector the content of the silicon-based material of the electrode active material layer positioned on the far side from the total, number of multi-layer electrodes than the content of the silicon-based material of the electrode active material layer positioned on the side relatively close to the whole of the current collector.

[Claim 2]

According to claim 1,

The carbon-based material is a multi-layer electrode comprising an artificial graphite, natural graphite, hard carbon, soft carbon, carbon black, acetylene black, Ketjen black, super-graphene and at least one selected from the group consisting of a fiber carbon.

[Claim 3]

According to claim 1,

The silicon-based material is ¾ (0 <<2), pure water (a ^), and alloys ( 3 multi-layer electrode containing at least one element selected from the group consisting of 11).

[Claim 4]

According to claim 1,

The binder is polyvinylidene fluoride, polyvinyl alcohols, carboxymethyl cellulose 010, starch, hydroxypropylcellulose, Woods, playing cellulose

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By Woods, polyvinylpyrrolidone, tetrafluoroethylene Cellulofine ethylene, polyethylene, polypropylene, ethylene-propyl ten-diene terpolymer (卵 ·), sulfonated EPm, styrene is selected from the group consisting of butadiene rubber, and fluorine rubber 1, a multi-layer electrode containing at least.

[5.]

The method of claim 1, wherein the multi-layer electrode comprising the electrode active material layer of 2 to 4 layers.

[Claim 6]

Standing ateo to claim 5, farther away from the current collector of claim 1 to claim II electrode active material layer including a carbon-based material and a binder in an amount that decreases sequentially (where, II is an integer of 2 to 4) and comprising ,

The electrode active material layer II is the 11-1 multilayer electrode comprising a carbon-based material and the carbon-based material and a binder in an amount of 0% to 99%, based on the respective weight percentages of the binder contained in the electrode active material layer, respectively .

[7.]

In the low 16, wherein the first to the II electrode active material layer is farther away from the current collector sequentially by increasing the content, and the silicon-based material which comprises a 11-1 electrode active material layer included in the electrode active material layer II dajeung electrode including a silicon-based material, based on the content (% by weight) of silicon-based material in an amount of 0% to 99%.

[Claim 8]

According to claim 1,

It said multi-layer electrode the multi-layer electrode, characterized in that the negative electrode.

[9.]

The entire electrode one or both sides of a house, a method of manufacturing a multi-layer electrode comprising: applying a layer of one electrode active material slurry 2 layer,

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The electrode active material slurry, and are different from the content of the constituents,

Method of producing a multi-layer electrode to form each of the electrode active material slurry are a plurality of the discharging parts, respectively at the same time ejecting through the respective discharge port of the die having the electrode collector in the layer of an electrode active material slurry stacked in two or more layers.

[10.]

10. The method of claim 9,

Layer of the electrode active material slurry are also each include a carbon-based material, a binder, and a silicone-based material,

Is based on the formation direction of the electrode active material of the slurry layer, the cross from the adjacent electrode active material layers of the slurry, the relative content of the content and the binder of the carbon-based material layer of the electrode active material slurry which is located on the side close to the whole of the current collector, It is greater than the relative amount of the binder content and the carbon-based material layer of the electrode active material slurry which is located on the far side from the entirety of the current collector,

Relative to the production of many multilayer electrode than the content of the silicon-based material of the current collector the content of the silicon-based material layer of the electrode active material slurry which is located on the far side from the current, the electrode active material slurry layer which is located on the side relatively close to the whole of the current collector Way .

[11.]

The method of claim 1◦ wherein

The silicon-based material is ¾ (0 <2), pure water (Ke), high temperature (_ 1 0 1 The method of the multi-layer electrode containing at least one selected from the group consisting of.

[12.]

A positive electrode, a negative electrode of claim 1 to claim 7, including a multi-layer electrode of any one claim, wherein the electrode assembly and comprising a separator interposed between the anode and the cathode;

The non-aqueous electrolyte for impregnating the electrode assembly; And

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The lithium secondary battery comprising a battery case which incorporates the electrode assembly and the non-aqueous electrolyte.

[13.]

5, the battery module according to claim Hanun comprises a lithium secondary battery according to claim 12 wherein the unit cell.