CN1279634C - Electrode, method for making same and secondary battery - Google Patents
Electrode, method for making same and secondary battery Download PDFInfo
- Publication number
- CN1279634C CN1279634C CNB2004100852351A CN200410085235A CN1279634C CN 1279634 C CN1279634 C CN 1279634C CN B2004100852351 A CNB2004100852351 A CN B2004100852351A CN 200410085235 A CN200410085235 A CN 200410085235A CN 1279634 C CN1279634 C CN 1279634C
- Authority
- CN
- China
- Prior art keywords
- mentioned
- active material
- electrode active
- material layer
- electrode
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000000034 method Methods 0.000 title abstract description 14
- 239000007772 electrode material Substances 0.000 claims abstract description 66
- 238000004519 manufacturing process Methods 0.000 claims abstract description 11
- 238000004804 winding Methods 0.000 claims abstract description 10
- 230000015572 biosynthetic process Effects 0.000 claims description 22
- 239000004020 conductor Substances 0.000 claims description 8
- 230000007547 defect Effects 0.000 abstract 1
- 238000005755 formation reaction Methods 0.000 description 18
- 239000011248 coating agent Substances 0.000 description 11
- 238000000576 coating method Methods 0.000 description 11
- 239000000463 material Substances 0.000 description 8
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 7
- 229910052744 lithium Inorganic materials 0.000 description 7
- 239000000843 powder Substances 0.000 description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 5
- 238000013461 design Methods 0.000 description 5
- 239000000853 adhesive Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 4
- 239000007773 negative electrode material Substances 0.000 description 4
- 239000011149 active material Substances 0.000 description 3
- 239000013543 active substance Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000003792 electrolyte Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 229910002804 graphite Inorganic materials 0.000 description 3
- 239000010439 graphite Substances 0.000 description 3
- 238000009740 moulding (composite fabrication) Methods 0.000 description 3
- HNJBEVLQSNELDL-UHFFFAOYSA-N pyrrolidin-2-one Chemical compound O=C1CCCN1 HNJBEVLQSNELDL-UHFFFAOYSA-N 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000003575 carbonaceous material Substances 0.000 description 2
- XGZVUEUWXADBQD-UHFFFAOYSA-L lithium carbonate Chemical compound [Li+].[Li+].[O-]C([O-])=O XGZVUEUWXADBQD-UHFFFAOYSA-L 0.000 description 2
- 229910001416 lithium ion Inorganic materials 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- -1 polyethylene Polymers 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000005030 aluminium foil Substances 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 229910021446 cobalt carbonate Inorganic materials 0.000 description 1
- CKFRRHLHAJZIIN-UHFFFAOYSA-N cobalt lithium Chemical group [Li].[Co] CKFRRHLHAJZIIN-UHFFFAOYSA-N 0.000 description 1
- ZOTKGJBKKKVBJZ-UHFFFAOYSA-L cobalt(2+);carbonate Chemical compound [Co+2].[O-]C([O-])=O ZOTKGJBKKKVBJZ-UHFFFAOYSA-L 0.000 description 1
- IVMYJDGYRUAWML-UHFFFAOYSA-N cobalt(ii) oxide Chemical class [Co]=O IVMYJDGYRUAWML-UHFFFAOYSA-N 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 239000011889 copper foil Substances 0.000 description 1
- 239000006071 cream Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000003292 diminished effect Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000008151 electrolyte solution Substances 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 229910052808 lithium carbonate Inorganic materials 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 239000011812 mixed powder Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 239000007774 positive electrode material Substances 0.000 description 1
- 230000001902 propagating effect Effects 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
Images
Classifications
-
- 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
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Abstract
The invention provides an electrode for a secondary battery in which there is no fracture in a pressurization process and the work efficiency in a winding and turning process is improved and its manufacturing method, and a secondary battery using the electrode. When an electrode active material layer is formed on both sides of a current collector 1, the length of an electrode active material layer 2a formed on a first face arranged at opposed positions through the current collector 1 is made longer than the electrode active material layer 2b formed on a second face, and the distance d<1>, d<2>in the longitudinal direction of the current collector between the end parts of the two electrode active material layers arranged at the opposed positions are respectively made 1-5 mm and 5-100 mm. Therefore, when applying pressurization for reducing the gap of the electrode active material layers, concentration of pressure on a specific part of the current collector is eliminated and defect by fracture can be reduced.
Description
Technical field
This relates generally to the electrode that uses in the nonaqueous electrolytic solution secondary battery such as lithium rechargeable battery and manufacture method thereof and clearly with the second electrode of described electrode as inscape.
Background technology
With mobile phone and notebook computer is that the mobile terminals of representative need be as the secondary cell of Miniature Power Unit.Entire machine miniaturization and light-weighted tendency are increasing, in order to adapt therewith, also to develop miniaturization and high performance secondary cell and make it practicability.
Lithium ion battery is that expectation can realize in up to the present the secondary cell voltage is the highest and energy density is high, even now still extensively carry out about the research that improves characteristic and miniaturization.
Lithium ion battery has: the positive electrode and the negative electrode that form its main composition key element of conduct of positive electrode active substance layer, negative electrode active material layer on the tabular collector body that is made of electric conductor; Be installed in dividing plate, electrolyte between the positive and negative electrode.Now, in for the actual lithium rechargeable battery that uses, the electrode active material on the positive pole uses the powder of main component as lithium and cobalt oxides, and the electrode active material on the negative pole uses the carbon-based material powder.And the porous film that uses macromolecular materials formations such as polyethylene, polypropylene is as dividing plate.
Fig. 2 is the stereogram that the example of the formation that installs overlapping coiling positive electrode in dividing plate ground and negative electrode additional is shown.In Fig. 2,4a is a positive electrode, and 4b is a negative electrode, and 6a is that anodal electric current takes out corbel back slab, and 6b is that cathodal current takes out corbel back slab, the 5th, dividing plate, the 7th, winding element.
In this example, at first, prepare strip-shaped conductive body as collector body, form positive and negative electrode active material layer (not shown) on the surface of collector body and make positive electrode 4a and negative electrode 4b.Make dividing plate 5 then between positive electrode and negative electrode, be wound into flat pattern and form winding element 7.
As mentioned above,, be accompanied by the development of e-machine in recent years, require further to improve energy density though lithium rechargeable battery has the high advantage of energy density.Therefore, must increase above-mentioned electrode active material layer etc., but, therefore reduce the voidage of electrode active material layer because simple increase can cause battery to maximize.
The formation method of electrode active material layer generally is that the cream of the solvent of the macromolecular material of the powder of electrode active material and formation adhesive, dissolving macromolecular material is coated in the collector body surface, removes by drying and desolvates.Therefore, dried electrode active material layer has only except that the space of desolvating, and in order to reduce voidage, pressurizations such as use roller are effective.
But, on the one hand, operating efficiency for the operation that improves rolled electrode, the designs such as part that begin to reel on electrode surface have the part that does not form electrode active material layer, if the formation starting end unanimity of two electrode active material layers that design on two surfaces of collector body, then the pressure of propagating from electrode active material layer is concentrated, and collector body becomes the main cause that manufacturing cost rises in this part fracture.
In order to prevent such fracture in possible trouble, the configuration of biasing ground finishes end via the formation starting end and the formation of opposed two electrode active material layers of collector body.According to this method, the pressure that is applied on the collector body via electrode active material layer when pressurization does not concentrate in the narrow range, realizes preventing above-mentioned certain effect of breaking.
A kind of technology is disclosed in the patent documentation 1, be coated with active material at current collection off and on the one side of core, form electrode intermixture portion behind the dry solidification, be coated with active material at current collection off and on the another side of core under the following state, promptly be arranged to be offset to the coating starting end position of 1-5mm on one side from the coating terminal part of a described face top electrode intermixture portion beginning to apply the position, the coating terminal location is arranged to move to uncoated one lateral deviation from the coating starting end of a described face top electrode intermixture portion position of 1-5mm, form electrode intermixture portion after the dry solidification, make the starting end and the uncoated portion boundary of electrode intermixture portion opposed, overflow with core at this intermixture coating terminal part current collection with the terminal part of the electrode intermixture portion of the one side of an opposite side.
Fig. 3 is the cross section ideograph of disclosed electrode according to prior art in the patent documentation 1.8 is collector bodies in Fig. 3, and 9a is the electrode active material layer that forms on one side, and 9b is the electrode active material layer that forms on another face, and 10a and 10b are protrusions, the 11st, and electrode.Protrusion 10a and 10b are because coating is used to form pressure increase and inevitable produce of the employed mould inside of paste when beginning to apply of electrode active material layer.
And d3 is via the formation starting end of the opposed electrode active material layer of collector body and forms the distance that finishes between the end, i.e. side-play amount.And, the moving direction of collector body when the arrow among Fig. 3 illustrates the coating paste, the top and bottom among Fig. 3 are coating in opposite direction respectively.
Therefore, according to patent documentation 1 disclosed technology, has the dysgenic effect that reduces to a certain extent in the pressure process really.But, as shown in Figure 3, make the formation position of electrode active material layer only on same direction, be offset 1-5mm, electrode active material layer 9b surpasses necessary thickness in end portion thickness, materials used surpasses necessary limit, accompanies therewith, local positive pole and negative pole takes place produce the inconsistent problem of counterweight.
And, though the part that design does not form electrode active material layer is to help as mentioned above to raise the efficiency in the operation of rolled electrode, but as disclosed in the patent documentation 1, end side-play amount between the two is 1-5mm, as winding element shown in Figure 2, have under the fold back portion situation, do not forming the partial-length deficiency of electrode active material layer, the problem that exists its effect fully not realize.
Patent documentation 1:2002-134102 patent gazette.
Summary of the invention
Therefore, problem of the present invention provides a kind of electrode and manufacture method thereof that is used for secondary cell, and uses the secondary cell of described electrode, and described electrode does not rupture in the pressurization operation, can improve the operating efficiency of coiling operation.
The present invention studies the result of configured electrodes active material layer on two faces of collector body repeatedly in order to solve above-mentioned problem.
Promptly, the present invention has part that forms electrode active material layer and the electrode that does not form the part of electrode active material layer on opposed first and second in the collector body that is made of the strip-shaped conductive material, it is characterized in that, the first end of the above-mentioned electrode active material layer part of above-mentioned first formation is configured to, move 5-100mm than first end to the second end one lateral deviation, and the second end of the above-mentioned electrode active material layer part of above-mentioned first formation is configured to via the above-mentioned electrode active material layer part of above-mentioned second formation of the opposed position of above-mentioned collector body, move 1-5mm than above-mentioned the second end to above-mentioned first end one lateral deviation via the above-mentioned electrode active material layer part of above-mentioned second formation of the opposed position of above-mentioned collector body.
And, the present invention forms in the electrode manufacturing method of electrode active material layer on opposed first and second of the collector body that is made of the strip-shaped conductive material discontinuously, it is characterized in that, above-mentioned first above-mentioned electrode active material layer that go up to form begins to form to the position that the other end one lateral deviation is moved 5-100mm in an end than above-mentioned second electrode active material layer that forms on via the opposed position of above-mentioned collector body, and forms on position from the other end of above-mentioned second electrode active material layer that forms on via the opposed position of above-mentioned collector body to above-mentioned end one lateral deviation that move 1-5mm than and finish.
And, the present invention forms in the electrode manufacturing method of electrode active material layer on opposed first and second of the collector body that is made of the strip-shaped conductive material discontinuously, it is characterized in that, above-mentioned first above-mentioned electrode active material layer that go up to form begins to form to the position that the other end one lateral deviation is moved 1-5mm in an end than above-mentioned second electrode active material layer that forms on via the opposed position of above-mentioned collector body, and forms on position from the other end of above-mentioned second electrode active material layer that forms on via the opposed position of above-mentioned collector body to above-mentioned end one lateral deviation that move 5-100mm than and finish.
And the feature of secondary cell of the present invention is to have winding element, and described winding element is by common coiling of dividing plate that has the positive electrode and the negative electrode of said structure and be sandwiched in therebetween formed.
In electrode of the present invention, on two faces of collector body, design part that forms electrode active material layer and the part that does not form electrode active material layer, and begin the end or form the position of finishing the end to be offset mutually via the formation of the opposed electrode active material layer of collector body, therefore can significantly reduce the bad phenomenon of breaking in the pressurization operation.
And, in winding process, even under the situation that radius of curvature is diminished, electrode of the present invention is because design has the part that does not form electrode active material layer of lengthening to come correspondence with it, so can improve the efficient of coiling operation, suppress the generation of bad phenomenon.
Description of drawings
Fig. 1 is the cross section ideograph of an example of the electrode of the most preferred embodiment according to the present invention;
Fig. 2 is the stereogram that the example that installs the overlapping ground formation of reeling in dividing plate ground between positive pole and the negative pole additional is shown;
Fig. 3 is the cross section ideograph according to the electrode of prior art.
Embodiment
Fig. 1 implements most preferred embodiment of the present invention, be pattern the figure in the cross section of an example of electrode is shown.In Fig. 1, the 1st, collector body, 2a are first and go up the electrode active material layer that forms that 2b is second and goes up the electrode active material layer that forms, the 3rd, electrode.Side-play amount d1 and d2 are set at 1-5mm, 5-100mm respectively.Wherein particularly d2 can suitably adjust according to the winding diameter of electrode, the coiling number of turns etc.
And the material that collector body uses is so long as to have conductivity just passable, qualification especially, can use various metal formings, be dispersed with electroconductive powder flexible macromolecule plate etc. arranged.And, select material must consider certainly not and electrolyte generation chemical reaction, be not dissolved in the solvent that constitutes electrolyte etc.
And if lithium rechargeable battery, the positive electrode active substance layer is a lithium cobalt composite oxide etc., uses with conductive carbon cellulosic material such as graphite, and the negative electrode active material layer uses graphite, coke, active carbon etc.
For these electrode active materials are coated in the collector body surface, make with the following method and wait, as after material is modulated into the powder of suitable granularity, with adhesives such as for example Kynoar, for example N-methyl-2-gives a tongue-lashing pyrrolidone equal solvent mixing formation paste, applies.
Embodiment 1
Below, specifically further describe the present invention for example.
The manufacture method of positive electrode at first, is described.Wherein, be lithium carbonate and cobalt carbonate to mix at 1: 1 according to the mol ratio of lithium and cobalt, 900 ℃ of following sintering are 5 hours in air.Use mortar that this sintered body is pulverized, become the sintered powder that particle mean size is 15 μ m.Be the sintered powder that obtains and lithium carbonate powder 95/5 to mix according to weight ratio then.
Above-mentioned mixed-powder is mixed with weighing according to weight ratio 91/6/3 as the graphite of electric conducting material, as the Kynoar of adhesive, be distributed to N-methyl-2-and give a tongue-lashing and make the paste that the positive electrode active substance layer forms usefulness in the pyrrolidone.Is this paste coating on the aluminium foil of 20 μ m at the thickness of preparing as collector body, forms electrode active material layer.
In coated technique, at first on first, apply paste, it is 420mm that formation makes the partial-length that forms electrode active material layer, the length that does not form the part of electrode active material layer is the circulation pattern of 6mm.And, the coating amount of adjustment paste, making the dried thickness of electrode active material layer is 110 μ m.
Then, on second, apply paste, make d1 shown in Figure 1 and d2 be respectively 3mm and 60mm.It is 110 μ m that the coating amount of also adjusting paste makes second the dried thickness of top electrode active material layer.Then, use roller to give the plate pressurization of formation electrode active material layer on the two sides of collector body, making integral thickness is 160 μ m.
Below, the manufacture method of negative electrode is described.Wherein, phenol resin in inert gas flow after the sintering, pulverizing and obtaining particle mean size is the carbon materials of 20 μ m, mix with weighing according to weight ratio 90/10, be distributed to N-methyl-2-and give a tongue-lashing and make the paste that the negative electrode active material layer forms usefulness in the pyrrolidone as the Kynoar of adhesive.Operation afterwards is identical with the situation that forms positive electrode, obtains negative electrode.And the metal forming that collector body uses is that thickness is the Copper Foil of 20 μ m.
Positive electrode of Huo Deing and negative electrode are all found to break like this, do not have to find in the concentrated problem of the privileged site generation pressure of collector body in the pressurization operation.Therefore find to improve the productivity and the reliability of secondary cell according to the present invention.
Industrial utilizability
And, in the above-described embodiments, although understand lithium rechargeable battery, but also suitable Be used for other secondary cells, have the double-layer capacitor etc., electrochemical cell of same structure etc.
Claims (4)
1, a kind of electrode, in the collector body that constitutes by the strip-shaped conductive material, have part that forms electrode active material layer and the part that does not form electrode active material layer on opposed first and second, it is characterized in that, the first end of the above-mentioned electrode active material layer part of above-mentioned first formation is configured to move 5-100mm than the first end via the above-mentioned electrode active material layer part of above-mentioned second formation of the opposed position of above-mentioned collector body to the second end one lateral deviation, and the second end of the above-mentioned electrode active material layer part of above-mentioned first formation is configured to move 1-5mm than the above-mentioned the second end via the above-mentioned electrode active material layer part of above-mentioned second formation of the opposed position of above-mentioned collector body to above-mentioned first end one lateral deviation.
2, a kind of electrode manufacturing method, in the collector body that constitutes by tape conductor, form electrode active material layer discontinuously on opposed first and second, it is characterized in that, go up the above-mentioned electrode active material layer that forms for above-mentioned first, begin to form to the position that the second end one lateral deviation is moved 5-100mm at first end, and move to above-mentioned first end one lateral deviation at above-mentioned the second end to form on the position of 1-5mm and finish than above-mentioned second electrode active material layer that forms on via the opposed position of above-mentioned collector body than above-mentioned second electrode active material layer that forms on via the opposed position of above-mentioned collector body.
3, a kind of electrode manufacturing method, in the collector body that constitutes by tape conductor, form electrode active material layer discontinuously on opposed first and second, it is characterized in that, go up the above-mentioned electrode active material layer that forms for above-mentioned first, begin to form to the position of the second end skew 1-5mm at first end, and form on the position of above-mentioned first end skew 5-100mm at above-mentioned the second end and to finish than above-mentioned second electrode active material layer that forms on via the opposed position of above-mentioned collector body than above-mentioned second electrode active material layer that forms on via the opposed position of above-mentioned collector body.
4, a kind of secondary cell is characterized in that having winding element, and described winding element is by common coiling of dividing plate that has the positive electrode and the negative electrode of the described structure of claim 1 and be sandwiched in therebetween formed.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP350170/03 | 2003-10-09 | ||
| JP350170/2003 | 2003-10-09 | ||
| JP2003350170A JP2005116376A (en) | 2003-10-09 | 2003-10-09 | Electrode and its manufacturing method, and secondary battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1606184A CN1606184A (en) | 2005-04-13 |
| CN1279634C true CN1279634C (en) | 2006-10-11 |
Family
ID=34541790
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100852351A Active CN1279634C (en) | 2003-10-09 | 2004-10-09 | Electrode, method for making same and secondary battery |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2005116376A (en) |
| CN (1) | CN1279634C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010134258A1 (en) * | 2009-05-18 | 2010-11-25 | パナソニック株式会社 | Electrode plate for nonaqueous electrolyte secondary battery, and nonaqueous electrolyte secondary battery |
| JP6095961B2 (en) * | 2011-12-06 | 2017-03-15 | 株式会社半導体エネルギー研究所 | Square lithium secondary battery |
| TWI622218B (en) * | 2016-09-22 | 2018-04-21 | 財團法人工業技術研究院 | Electrode and battery employing the same |
-
2003
- 2003-10-09 JP JP2003350170A patent/JP2005116376A/en active Pending
-
2004
- 2004-10-09 CN CNB2004100852351A patent/CN1279634C/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| JP2005116376A (en) | 2005-04-28 |
| CN1606184A (en) | 2005-04-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP3907800B1 (en) | Negative electrode sheet, preparation method thereof and lithium ion battery containing the same | |
| EP3639319B1 (en) | Electrodes and electrolytes for aqueous electrochemical energy storage systems | |
| US10644324B2 (en) | Electrode material and energy storage apparatus | |
| CA2169484C (en) | Rechargeable non-aqueous lithium battery having stacked electrochemical cells | |
| US9076570B2 (en) | Nano-composite structures, methods of making, and use thereof | |
| EP3367467B1 (en) | Methods for making a battery | |
| WO2021147409A1 (en) | Thick electrode component and manufacturing method for thick electrode tabs | |
| CN102379017A (en) | Electricity accumulator device | |
| US20130003261A1 (en) | Lithium plate, method for lithiation of electrode and energy storage device | |
| US20130171517A1 (en) | Current collector, electrode of electrochemical battery, and electrochemical battery using the same | |
| EP1029333B1 (en) | Double layer capacitor and its manufacturing method | |
| KR20100129307A (en) | Ionic liquid-containing electrode membrane and electrode, process for producing the electrode membrane and the electrode, and electric storage device | |
| CN1591959A (en) | Laminated lithium ion secondary cell | |
| CN114447408B (en) | Battery and electronic equipment | |
| CN111900337A (en) | Lithium ion battery pole piece and preparation method thereof | |
| KR20180058333A (en) | Electrode for Secondary Battery Comprising Layer for Protecting Electrode Layer | |
| JP2002008730A (en) | Lithium secondary battery | |
| CN1279634C (en) | Electrode, method for making same and secondary battery | |
| KR101773103B1 (en) | Electrode, a method for preparing the same, electrode prepared using the same and secondary battery containing the same | |
| EP4131508A1 (en) | Pole piece, cell and battery | |
| WO2014073561A1 (en) | Secondary battery and method for producing secondary battery | |
| GB2298309A (en) | Fan-folded lithium battery construction comprising lithium ion-containing polymer electrolyte sandwiched between discrete electrode plates | |
| Deng et al. | “Soggy‐Sand” Chemistry for High‐Voltage Aqueous Zinc‐Ion Batteries | |
| JP3526236B2 (en) | Electric double layer capacitor | |
| KR20210055217A (en) | Method for producing carbon-manganese oxide catalyst for electrode for improving life characteristics, carbon-manganese oxide catalyst produced therefrom, electrode including the same, and energy storage device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Free format text: FORMER OWNER: NEC TOGANE TOCHIKI CO., LTD. Owner name: NEC ENERGY COMPONENTS CO., LTD. Free format text: FORMER OWNER: NEC TOKIN CO., LTD. Effective date: 20100903 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: SENDAI CITY, MIYAGI, JAPAN TO: KANAGAWA, JAPAN |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20100903 Address after: Kanagawa Patentee after: NEC ENERGY DEVICES, Ltd. Address before: Sendai City, Miyagi Prefecture, Japan Patentee before: NEC Tokin Corp. Effective date of registration: 20100903 Address after: Sendai City, Miyagi Prefecture, Japan Patentee after: NEC TOKIN Corp. Address before: Sendai City, Miyagi Prefecture, Japan Co-patentee before: NEC TOKIN TOCHIGI, Ltd. Patentee before: NEC Tokin Corp. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Kanagawa Patentee after: Envision AESC Energy Components Co.,Ltd. Address before: Kanagawa Patentee before: NEC ENERGY DEVICES, Ltd. |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Secondary battery electrode, method for manufacturing same, and secondary battery Effective date of registration: 20190821 Granted publication date: 20061011 Pledgee: SUMITOMO MITSUI BANKING Corp. Pledgor: Envision AESC Energy Components Co.,Ltd. Registration number: Y2019990000102 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |