CN104241654A - Current collector, manufacturing method of current collector, electrode and secondary battery - Google Patents
Current collector, manufacturing method of current collector, electrode and secondary battery Download PDFInfo
- Publication number
- CN104241654A CN104241654A CN201410219393.5A CN201410219393A CN104241654A CN 104241654 A CN104241654 A CN 104241654A CN 201410219393 A CN201410219393 A CN 201410219393A CN 104241654 A CN104241654 A CN 104241654A
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- Prior art keywords
- collector body
- electrode
- carbon powder
- conductive materials
- base material
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/64—Carriers or collectors
- H01M4/66—Selection of materials
- H01M4/661—Metal or alloys, e.g. alloy coatings
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/04—Processes of manufacture in general
- H01M4/0402—Methods of deposition of the material
- H01M4/0404—Methods of deposition of the material by coating on electrode collectors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/64—Carriers or collectors
- H01M4/66—Selection of materials
- H01M4/663—Selection of materials containing carbon or carbonaceous materials as conductive part, e.g. graphite, carbon fibres
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The invention provides a current collector, a manufacturing method of the current collector, an electrode with the current collector, and a secondary battery which uses the electrode and can reduce an inner resistance. When the current collector is used as the electrode of the secondary battery, contact resistance with an active material layer can be furthermore reduced. The current collector is characterized in that: the current collector (1) comprises a substrate (1a) comprising a metal foil, and a conductive matter (1b) which is arranged on the surface of at least one side of the substrate (1a); the conductive matter (1b) comprises carbon powder; and according to the carbon powder, pH value of a suspension which is obtained through dispensing 1.00wt% of the carbon powder in distilled water is 7.1-9.5.
Description
Technical field
The present invention relates to for the electrode of secondary cell collector body and manufacture method thereof, use the electrode of this collector body and use the secondary cell of this electrode.
Background technology
For the research being coated with the collector body of carbon series conductive material in the metal forming such as aluminium foil, Copper Foil of base material being used as electrode for secondary battery, carry out in various research institution up to now.In addition, also complete many patent applications, such as, can enumerate patent documentation 1 ~ patent documentation 4.
In patent documentation 1 and patent documentation 2, describe following collector body, be namely formed with the tunicle of carbon particulate (conductive materials) and the tunicle formation compound comprised as conductive materials on the surface of the base material such as aluminium foil, Copper Foil.In addition, in patent documentation 3, describe the collector body being provided with the conductive layer comprising carbon powder (conductive materials) and adhesive between active material.In addition, in patent documentation 4, describe the collector body being provided with the conductive coating paint layer using carbon as conductive agent on surface.These reduce the contact resistance between collector body and active material layer formed thereon, and realize improving the high speed charge-discharge characteristic of battery, the technology of cycle characteristics.
Prior art document
Patent documentation
Patent documentation 1: Japanese Unexamined Patent Publication 2007-226969 publication
Patent documentation 2: Japanese Unexamined Patent Publication 2010-135338 publication
Patent documentation 3: Japanese Unexamined Patent Publication 9-97625 publication
Patent documentation 4: Japanese Unexamined Patent Publication 2001-351612 publication
Summary of the invention
Invent problem to be solved
Thus, the reduction of the contact resistance between collector body and active material layer can be realized in existing technology.But in recent years, due to improve the high speed charge-discharge characteristic of battery, cycle characteristics requirement growing etc. further, therefore require the further reduction of the contact resistance between collector body and active material layer.
Therefore, problem of the present invention is to provide and can reduces with the manufacture method of the collector body of the contact resistance of active material layer, this collector body further when the electrode as secondary cell uses, use the electrode of this collector body and use to have the secondary cell that can reduce internal resistance of this electrode.
For solving the method for problem
In order to solve described problem, collector body of the present invention is the collector body of the conductive materials on the surface possessing the base material comprising metal forming and at least side being arranged at this base material, it is formed as follows, namely above-mentioned conductive materials contains carbon powder, for above-mentioned carbon powder, the pH of suspension-turbid liquid when being dispersed with the above-mentioned carbon powder of 1.00 quality % in distilled water is 7.1 ~ 9.5.
According to this formation, collector body becomes the carbon powder of the suspension-turbid liquid of the pH by being used as regulation, and suitably removing is formed at the autoxidation tunicle on the surface of the base material comprising metal forming.Therefore as secondary cell electrode use time, make the contact resistance low resistance between collector body and active material layer.
The manufacture method of collector body of the present invention is the manufacture method of collector body described above, it is characterized in that, the surface coating being included at least side of the base material comprising metal forming successively contains the painting process of the slurry of carbon powder and binding agent, with the drying process of the slurry after the above-mentioned coating of drying, the pH of suspension-turbid liquid when being used in distilled water as above-mentioned carbon powder the above-mentioned carbon powder being dispersed with 1.00 quality % is the carbon powder of 7.1 ~ 9.5.
According to this order, by using the carbon powder becoming the suspension-turbid liquid of the pH of regulation, in the process of the evaporating solvent in drying process, the pH comprising the slurry of conductive materials being attached to the surface of base material rises, and suitably can remove the autoxidation tunicle on the surface being formed at base material.Therefore, using manufacture collector body as secondary cell electrode use time, the contact resistance between collector body and active material layer is able to low resistance.
Electrode of the present invention uses the electrode having the secondary cell of collector body described above, arranges active material layer and form on the surface being provided with above-mentioned conductive materials of above-mentioned collector body.
According to this formation, electrode uses collector body described above, and utilize the surface conductance material being arranged at base material thus, the contact resistance between collector body and active material layer is able to low resistance.
Secondary cell of the present invention is the secondary cell with positive electrode and negative electrode, uses electrode of the present invention and form in above-mentioned positive electrode.
According to this formation, the electrode of secondary cell makes the contact resistance low resistance between collector body and active material layer, and therefore as secondary cell, its internal resistance is able to low resistance.
Invention effect
According to collector body of the present invention, suitably removing the autoxidation tunicle on the surface being formed at base material by using the carbon powder of regulation, when therefore using as the collector body of secondary cell, the contact resistance between collector body and active material layer can be reduced.Therefore, it is possible to obtain the effect that contact resistance obviously reduces.
According to the manufacture method of collector body of the present invention, suitably removing can be obtained and be formed at the collector body of the autoxidation tunicle on the surface of base material.Therefore, using manufacture collector body as secondary cell electrode use time, the contact resistance between collector body and active material layer is minimized.
According to electrode of the present invention, the contact resistance between collector body and active material layer can be reduced.Therefore, it is possible to obtain the effect that contact resistance obviously reduces.
In addition, according to secondary cell of the present invention, the internal resistance of battery can be reduced.
Accompanying drawing explanation
Fig. 1 is the schematic section of the structure for illustration of collector body of the present invention.
Fig. 2 is for illustration of using the schematic section having the structure of the electrode of collector body of the present invention.
Fig. 3 is for illustration of using the schematic section having the structure of the secondary cell of electrode of the present invention.
Fig. 4 is the flow chart of the flow process of the manufacture method representing collector body of the present invention.
Embodiment
Below, the execution mode of collector body of the present invention is described in detail.
[structure of collector body]
For the structure of present embodiment collector body, be described with reference to Fig. 1.
In example in FIG, the collector body 1 of present embodiment possesses conductive materials (conductive layer) 1b on the base material 1a comprising metal forming and the surface being arranged at base material 1a.In addition, conductive materials 1b is configured at the two sides of base material 1a.It should be noted that, conductive materials 1b can be configured at the surface of base material 1a by the state of island cohesion, also similarly can press film-form configuration.In addition, conductive materials 1b also can configure by the mode of the one side being configured at base material 1a.Namely conductive materials 1b is configured at the surface of at least side of base material 1a.
Further, with regard to collector body 1, conductive materials 1b contains carbon powder.Use following carbon powder as this carbon powder, the pH of suspension-turbid liquid when being dispersed with this carbon powder of 1.00 quality % in distilled water is 7.1 ~ 9.5.
The collector body 1 of present embodiment suitably can be used as the collector body of the positive electrode of such as lithium rechargeable battery.With regard to collector body 1, suitably removing is formed at the autoxidation tunicle on the surface of the base material comprising metal forming, and when therefore using as the electrode of secondary cell, the contact resistance between collector body and active material layer is able to low resistance.
The electrode of collector body 1 is had to be described in detail below for use.
Then, each inscape is described.
(base material)
Aluminium (A1), aluminium alloy etc. that base material 1a can use the collector body 1 usually used as electrode for secondary battery to use.When collector body 1 as electrode for secondary battery uses, the foil-like that base material 1a is about 5 ~ 50 μm with thickness usually uses.
(conductive materials)
Conductive materials 1b is following material, is formed at the surface of base material 1a with island or film-form, the contact resistance between the collector body 1 that reduction and base material 1a are together formed and active material layer 2 (Fig. 2 reference).
Conductive materials 1b contains the carbon powder as conductive materials.At this, " conductive materials contains carbon powder " refers to except as except the carbon powder of conductive materials, also can comprise other material.That is, conductive materials 1b is except original conductive materials and carbon powder, also comprises to improve the resin (binding agent) etc. that adaptation is target, is fixed on the surface of base material 1a in the mode of their mixture.
As described above, the pH of suspension-turbid liquid when being used in distilled water this carbon powder being dispersed with 1.00 quality % is the carbon powder of 7.1 ~ 9.5 to the carbon powder comprised in conductive materials 1b.
By using the carbon powder of above-mentioned formation, in drying process described later, the pH comprising the slurry of conductive materials coating Al paper tinsel surface rises along with drying, therefore, it is possible to removing is formed at the autoxidation tunicle on Al paper tinsel surface effectively.Therefore, collector body 1 eliminates the autoxidation tunicle on base material 1a surface.
If pH is less than 7.1, then not operatively remove autoxidation tunicle, when the electrode as secondary cell uses, the low resistance of the contact resistance between collector body 1 and active material layer 2 can not be realized.On the other hand, be difficult to make the carbon of very strong alkalescence, therefore the upper limit is 9.5.Preferably less than 9.0.
Therefore, the pH of suspension-turbid liquid is used to be the carbon powder of 7.1 ~ 9.5 as carbon powder.Preferred pH is 7.5 ~ 9.0, more preferably 8.0 ~ 9.0, particularly preferably 8.8 ~ 9.0.
With regard to the pH mensuration of carbon powder, can be implemented by following method as an example.Weigh carbon powder 1g, utilize mixing limit, agate mortar limit to add the distilled water of pH=7.0 by amount, make the suspension-turbid liquid that 1.00 quality % are dispersed with carbon powder.Make suspension-turbid liquid after stirring, leaving standstill 24 hours, utilize commercially available pH meter to measure pH.
Carbon powder is preferably called as the charcoal micropowder of carbon black.
As the carbon black comprised in conductive materials 1b, as long as pH when disperseing in water is within the scope of afore mentioned rules, can uses and comprise furnace black, acetylene black, Ketjen black, dim etc., utilize the various carbon blacks that various method makes.In addition, the carbon black beyond scope pH being in afore mentioned rules, by carrying out the methods such as plasma treatment in a vacuum, to be adjusted to pH within the scope of afore mentioned rules also can to use by giving hydroxyl on its surface.
(electrode)
Next, the formation of electrode of the present invention is described.Electrode of the present invention uses the electrode for secondary battery having the collector body of above-mentioned record, arranges the electrode of active material layer on the surface being provided with conductive materials of collector body.
With reference to Fig. 2, the formation of electrode of lithium rechargeable battery of the collector body 1 employing present embodiment is described.
Electrode 10 is as shown in Figure 2 made up of the active material layer 2 on the collector body 1 shown in Fig. 1 of present embodiment and the surface (two sides) that is laminated in collector body 1.The metals such as Al, Al alloy can be used as collector body 1 (base material 1a).In addition, as positive active material, known material can be used, such as LiCoO
2, LiNiO
2, LiMn
2o
4etc. lithium-containing oxides.Also there is no particular limitation for the manufacture method of the active material layer 2 of positive pole, known method can be utilized, such as, add except binding agent in pulverous above-mentioned lithium-containing oxides, can also add as required conductive agent, solvent etc. fully mixing after coat collector body 1 and carry out drying, punching press and manufacturing.It should be noted that, active material layer 2 also can by stacked in the mode of the one side being provided with conductive materials 1b.
(secondary cell)
Next, the formation of secondary cell of the present invention is described.Secondary cell of the present invention is the battery with positive electrode and negative electrode, the electrode of the very above-mentioned record of above-mentioned positive electricity.
With reference to Fig. 3 (suitably with reference to Fig. 2), the formation of the lithium rechargeable battery of the electrode 10 of the collector body 1 of present embodiment is had to be described to have employed to use.
Lithium rechargeable battery (secondary cell) 20 as shown in Figure 3 comprises to use to be had the electrode 10 of the collector body 1 of present embodiment i.e. positive electrode 11, negative electrode 12, distance piece 13 and electrolyte 14 and forms.Positive electrode 11 is separated by distance piece 13 with negative electrode 12, positive electrode 11, is filled with electrolyte 14 between negative electrode 12 and distance piece 13.In addition, the entirety of lithium rechargeable battery 20 is accommodated in container (not shown), and positive electrode 11 and negative electrode 12 soldered metal joint (not shown) respectively, is electrically connected with electrode terminal (not shown).
With regard to positive electrode 11, be formed with the above-mentioned active material layer 2 comprising positive active material on the surface of the collector body 1 of present embodiment.In addition, with regard to negative electrode 12, on the surface of the known collector body be such as made up of copper etc., be formed with the active material layer comprising the known negative electrode active materials such as graphite.
In addition, distance piece 13 and electrolyte 14 can use known material respectively and form.As distance piece 13, such as, can use the polyethylene-based microporous barrier of thickness 20 ~ 30 μm.In addition, as electrolyte 14, such as, can be used in the organic solvent such as propylene carbonate, ethylene carbonate and be dissolved with LiPF
6, LiBF
4etc. electrolytical non-aqueous electrolyte.
Next, with reference to Fig. 4 (suitably with reference to Fig. 1), the manufacture method of the collector body 1 of present embodiment is described.
[manufacture method]
As shown in Figure 4, the manufacture method of the collector body 1 of present embodiment comprises painting process S1 and drying process S2 successively.
Collector body 1 can manufacture by the following method, is namely included in the surface coating of the base material 1a comprising metal forming containing the painting process S1 of solution (slurry) of conductive materials 1b and the manufacture method of the drying process S2 of drying solution.
(painting process)
First, painting process S1 is described.
Painting process S1 is the operation containing the slurry of carbon powder and binding agent in the surface coating of at least side of the base material 1a comprising metal forming.
Slurry by adding and mixing the material of carbon powder, binding agent and other needs and prepare in solvent.The preparation of slurry adopts known method to carry out.
Conductive materials 1b can be island in the surface configuration of base material 1a, also can be configured to film-form.For making the structure that conductive materials 1b cohesion is island, the concentration regulating the conductive materials 1b coated in the solution of base material 1a is effective.If this is the concentration owing to regulating conductive materials 1b, the viscosity B coefficent of solution, therefore the distribution of coating and dried conductive materials 1b changes.
Use following carbon powder as being used as the carbon powder of conductive materials 1b, the pH of suspension-turbid liquid when namely disperseing the carbon powder of 1.00 quality % in distilled water is 7.1 ~ 9.5.This is because: by using the carbon powder of this scope, in the process of the evaporating solvent in drying process described later, the pH being attached to the slurry of the conductive materials on the surface of base material 1a rises, and can remove the autoxidation tunicle on the surface being formed at base material 1a.
As binding agent, normally used thickener, fluorine resin etc. can be adopted, the various resins such as such as carboxymethyl cellulose, polyvinylidene fluoride, styrene butadiene ribber, polypropylene.
Water solvent can be used as the solvent of solution (slurry).Water, distilled water etc. can be enumerated as water solvent.
For the coating of solution on the surface of base material 1a comprising conductive materials 1b, the normally used coating process utilizing the various coating machines such as rod coater, roll coater, gravure coater, dip coaterd, flush coater can be adopted.It should be noted that, conductive materials 1b coats two sides or the one side of base material 1a.
(drying process)
Next, drying process S2 is described.
Drying process S2 is the operation making the slurry drying be coated with in painting process S1.That is, drying process S2 is the operation for making solvent evaporation and diffusion after painting process S1.Drying process S2 can be undertaken by utilizing the mode of drying at room temperature, also can be undertaken by the mode using heat-treatment furnace etc. to carry out heat drying as required.
Dry time, temperature etc. do not specify, especially as long as make solvent evaporation and diffusion and the condition do not had a negative impact to the function etc. of collector body 1 of the present invention.It should be noted that, when carrying out heat drying, heating-up temperature preferred solvent is easily evaporated (lower limit reason) and is not reduced 100 ~ 170 DEG C of the temperature (upper limit reason) of metal forming intensity.
By this drying process S2, in the process of evaporating solvent, the pH comprising the slurry of conductive materials being attached to the surface of base material rises, and the autoxidation tunicle being formed at the surface of base material is removed.Collector body of the present invention can be obtained thus.
Above, the manufacture method of collector body of the present invention is illustrated, when carrying out of the present invention, between above-mentioned each operation or front and back can containing the operation beyond above-mentioned operation.Such as, also can comprise prepare slurry slurry preparation section, foreign material such as removing refuse etc. other the operation such as foreign material removal step.
Embodiment
Next, to the collector body of present embodiment, the embodiment and this comparative example not meeting the important document of invention that relatively meet important document of the present invention are described.
Sample is made by following method.
(base material)
As base material, use the Al paper tinsel of the thickness 15 μm of the 1000 Al alloys being.
(conductive materials)
As conductive materials, use the carbon black (furnace black) that makes by making oily imperfect combustion in stove and the carbon black (acetylene black) by acetylene gas thermal decomposition being made.
(pH mensuration)
The pH of carbon black measures and utilizes following method to implement.Weigh each hydrocarbon black powder 1g, utilize mixing limit, agate mortar limit to add the distilled water of pH=7.0 by amount, make the suspension-turbid liquid that carbon black is 1.00 quality % dispersions.Make suspension-turbid liquid after stirring, leaving standstill 24 hours, utilize the pH meter manufactured by the making of hole field to measure pH.
(painting process)
In painting process, use water as the solvent of solution comprising conductive materials, add CMC (carboxymethyl cellulose with the concentration of 1 quality %; Wako Pure Chemical Industries, Ltd. manufactures) resin.In addition, the coating of solution uses rod coater (number No.5) to carry out.
(drying process)
Using the solution coat containing conductive materials behind the surface (simultaneously) of the Al paper tinsel as base material, base material is kept in the drying oven of 120 DEG C and carries out drying.
< evaluation method >
(evaluation of the internal resistance of battery)
By being made the battery unit Al paper tinsel being formed with conductive materials on surface being used as collector body by above-mentioned method, evaluate the effect of the low resistance of contact resistance by measuring its flash-over characteristic.
The sample being formed with conductive materials (carbon) forms active material layer, makes lithium rechargeable battery positive electrode.At this, for active material layer by the following active material layer forming thickness about 25 μm, be about to the LiCoO as active material
2, the acetylene black as conductive agent, the PVdF as binding agent (polyvinylidene fluoride) and solvent the material of slurry made in the ratio mixing of regulation of NMP (1-METHYLPYRROLIDONE) coat the face of the conductive materials being formed with sample, make it dry in the air of 120 DEG C.
By preparing identical method with above-mentioned sample, the Cu paper tinsel of thickness about 15 μm is coated with the slurry using graphite as active material and carries out drying, making lithium rechargeable battery negative electrode, by combining with above-mentioned positive electrode, making the internal resistance mensuration battery unit of battery.It should be noted that, negative electrode is the electrode directly arranging active material and do not arrange conductive materials on Cu paper tinsel.
For the battery unit made, after carrying out adjustment (adjustment) the discharge and recharge process specified, measure from the charged state of 4.2V, discharge curve when discharging under each electric current changing discharge-rate (C multiplying power).Further, discharge capacity C when being discharged by 0.2C (electric current by all told of battery carried out discharging with 5 hours)
0.2the ratio of discharge capacity C10 when discharging with 10C (electric current that all told of battery carried out discharging with 6 minutes), according to calculating discharge capacity rate R as follows.
R＝C
10/C
0.2×100(％)
Gathering of the evaluation result of the manufacturing conditions of the displayed in Table 1 sample made, evaluating characteristics result and quality.It should be noted that, in Table 1, discharge capacity rate R when discharging relative to 0.2C during 10C electric discharge is more than 30%, and flash-over characteristic during heavy-current discharge improves the sample of successful as qualified (zero).On the other hand, the sample of discharge capacity rate R when discharging relative to 0.2C during 10C electric discharge less than 30% is as defective (△).
[table 1]
In Table 1, No.1 ~ 3 use the carbon black of pH less than 7.1, and therefore the autoxidation tunicle of not removed substrate surface, can not reduce contact resistance, because this discharge capacity rate is less than 30%.
On the other hand, within the scope of the invention, therefore can remove the autoxidation tunicle of substrate surface in drying process, discharge capacity rate is more than 30% to the pH of the carbon black that No.4 ~ 7 use, and can confirm the improvement effect of flash-over characteristic.
Above, explain the embodiment of embodiments of the present invention and displaying, but purport of the present invention is not limited to above-mentioned content, its interest field must broadly be explained according to the record of required scope.It should be noted that, it is self-evident that content of the present invention can carry out the amendment, change etc. of broad sense according to above-mentioned record.
Symbol description
1 collector body
1a base material
1b conductive layer (conductive materials)
2 active material layers
10 electrodes
11 positive electrodes (electrode)
12 negative electrodes
13 distance pieces
14 electrolyte
20 lithium rechargeable batteries (secondary cell).
Claims (4)
1. a collector body, is characterized in that,
Described collector body possesses the conductive materials on the surface of the base material comprising metal forming and at least side being arranged at this base material,
Described conductive materials contains carbon powder,
For described carbon powder, the pH of suspension-turbid liquid when being dispersed with the described carbon powder of 1.00 quality % in distilled water is 7.1 ~ 9.5.
2. a manufacture method for collector body, is the manufacture method of collector body according to claim 1, it is characterized in that,
Described method comprises successively:
Painting process: comprising the slurry of surface coating containing carbon powder and binding agent of at least side of base material of metal forming, and
Drying process: make the slurry drying after described coating,
The pH of suspension-turbid liquid when being used in distilled water as described carbon powder the described carbon powder being dispersed with 1.00 quality % is the carbon powder of 7.1 ~ 9.5.
3. an electrode, is characterized in that, is the use of the electrode of the secondary cell of collector body according to claim 1,
The surface being provided with described conductive materials of described collector body is provided with active material layer.
4. a secondary cell, is characterized in that,
The secondary cell with positive electrode and negative electrode, described positive electricity electrode very according to claim 3.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013123906A JP2014241259A (en) | 2013-06-12 | 2013-06-12 | Current collector, method for manufacturing current collector, electrode, and secondary battery |
| JP2013-123906 | 2013-06-12 |
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| Publication Number | Publication Date |
|---|---|
| CN104241654A true CN104241654A (en) | 2014-12-24 |
| CN104241654B CN104241654B (en) | 2017-04-12 |
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| CN201410219393.5A Active CN104241654B (en) | 2013-06-12 | 2014-05-22 | Current collector, manufacturing method of current collector, electrode and secondary battery |
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| Country | Link |
|---|---|
| JP (1) | JP2014241259A (en) |
| CN (1) | CN104241654B (en) |
| TW (1) | TWI518977B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108649185A (en) * | 2018-04-25 | 2018-10-12 | 苏州宇量电池有限公司 | A kind of solid-state preparation method, pole piece and the lithium ion battery of electrodes of lithium-ion batteries |
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| CN102208598A (en) * | 2011-05-12 | 2011-10-05 | 中国科学院宁波材料技术与工程研究所 | Electrode plate of graphene coating modified lithium secondary battery and manufacturing method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108649185A (en) * | 2018-04-25 | 2018-10-12 | 苏州宇量电池有限公司 | A kind of solid-state preparation method, pole piece and the lithium ion battery of electrodes of lithium-ion batteries |
Also Published As
| Publication number | Publication date |
|---|---|
| TW201503478A (en) | 2015-01-16 |
| JP2014241259A (en) | 2014-12-25 |
| CN104241654B (en) | 2017-04-12 |
| TWI518977B (en) | 2016-01-21 |
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