CN1334611A - Method using conductive collector in self-supporting electrode, electrode, conductive collector and cell assembly - Google Patents
Method using conductive collector in self-supporting electrode, electrode, conductive collector and cell assembly Download PDFInfo
- Publication number
- CN1334611A CN1334611A CN00127017A CN00127017A CN1334611A CN 1334611 A CN1334611 A CN 1334611A CN 00127017 A CN00127017 A CN 00127017A CN 00127017 A CN00127017 A CN 00127017A CN 1334611 A CN1334611 A CN 1334611A
- Authority
- CN
- China
- Prior art keywords
- collector
- electrode
- current
- conductive layer
- assembly
- 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.)
- Pending
Links
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 relates to physical or chemical vapor deposition, such as evaporation, of metal current collector on electrode with self-supporting type. This kind of electrode can be used in rechargeable battery of lithium ion.
Description
The present invention relates on the self-support type electrode, use the method for conduction current-collector.And, the invention still further relates to the assembly of the electrode, conduction current-collector and the battery that obtain by this method, and press the battery that following order is formed: one or more layers current-collector, anode, separator, negative electrode, current-collector and electrolyte.
At United States Patent (USP) 5,470, in 357, this to use the method for conduction current-collector on the self-support type electrode be known.In order to make lithium ion battery, positive electrode film or diaphragm are made the dressing layer of the diffusion of inserting electrode assemblie, for example LiMn in the copolymer mother solution
2O
4Powder is dried the formation film subsequently.The positive current collector layer of aluminium foil is carried out preliminary treatment with polymer-based material, and this polymer-based material and parent copolymer fit are to reach the purpose that improvement will be placed on the positive electrode on the current-collector subsequently.By comprising VdF: that the composition of HFP copolymer solution and plasticizer forms, be placed on the anode film subsequently as the electrolyte/separator films of dry coating.Negative film as the dry coating of diffusion carbon dust in the copolymer mother solution is placed on the separator films layer in the corresponding way, with being placed on positive electrode layer, finish cell construction thus with the pretreated negative pole copper collector of the corresponding mode paper tinsel that is used for positive current-collector.This structure is heated adding to depress subsequently, to realize bonding between plasticising copolymer parent fraction and the current collector foil, so that realize the lamination of electrolyzer component is put into the flexible battery cell construction of adhesion.
The defective of this self-support type electrode is that employed current-collector can not contact well with the electrode (particularly negative electrode or anode) of below.And, during battery life in, between electrode particle and current-collector, must keep good contact.Therefore, under the situation of prior art, battery is closed in the jar, during battery life in jar remain pressure.Current-collector in this scheme and the contact between the electrode only are a kind of contacts of physical property, so determine by border contact surface between electrode and the current-collector is long-pending.
Therefore, the contact surface that an object of the present invention is to increase between electrode and the current-collector is long-pending, with the practical battery efficiency of improving.
Another object of the present invention provides on the self-support type electrode method of using the conduction current-collector, does not cause surface area contacted minimizing between electrode and the current-collector in any error on the electrode surface.
First section described method of this paper is characterized in that: the conductive layer that forms current-collector is provided, because described layer is formed on the described surface on the spot, makes conductive layer follow electrode surface.
Can pass through different technologies, for example physics or chemical vapor deposition, sputter or plating, the current-collector that will conduct electricity is arranged on anode and the cathode material, considers the excellent surface contact between electrode and the current-collector, and physical vapor deposition is preferred.
Obviously, term " negative electrode " is used to represent positive electrode here, term " anode " expression negative electrode.
In the battery manufacture process, keep safety in order to ensure electrolytical rapid osmotic, be preferably on the self-support type electrode and be provided with conductive layer with the form of putting.Here can understand to not being that conductive layer is all arranged on all surfaces of electrode " with the form of point " is this.
In the method according to the invention, might both on positive self-support type electrode, be provided with conductive layer, also on negative self-support type electrode, be provided with conductive layer.If conductive layer (preferably aluminium) is applied on the negative electrode, will obtain the assembly of positive current-collector and negative electrode; If conductive layer (preferably being made of copper) is applied on the anode, will obtain the assembly of negative current-collector and anode.
The invention still further relates to the battery of forming by following order: one or more layers current-collector, anode, separator, negative electrode, current-collector and electrolyte is characterized in that: at least one part is according to assembly of the present invention in current-collector/anode and the collector/cathode.
With reference now to embodiment, the present invention will be described, but the present invention is not limited to this.
The manufacturing of anode
Prepare the mixture of the 0.05g UHMWPE of 5.3g meso particulate, 5g decaline and 100 ten thousand above molecular weight.Mixture is heated to 160 ℃ and casting film.Remove excessive solvent, by the density of rolling increase film.
The manufacturing of negative electrode
Except at first preparing 5gLiCoO
2, 5g decaline, 0.05g UHMWPE and 0.3g carbon black (soot) mixture beyond, the manufacture method of negative electrode is identical with anode.Add hot mixt then and handle with the same manner target.After removing solvent, obtain dry plate.
The manufacturing of the assembly of current-collector and anode and current-collector and negative electrode
Negative electrode and anode obtain as mentioned above, by gas deposition the copper layer are set on negative electrode, and aluminium lamination is set on anode, and every layer thickness is 1 μ m.Obtain thus being provided with the current-collector and the negative electrode of aluminium lamination and being provided with the current-collector of copper layer and the assembly of anode.
Example 1
In order to measure the contact resistance between cathode material and the current-collector, use the thick cathode material of making by said method of 100 μ m, downcutting radius from this material is the dish of 1.5cm.Make comparative sample, as cathode material, cathode material is located between three cathode discs of arranged alternate and gathers into folds by hot and shell of compression having under the situation of a small amount of solvent with the thick porous aluminum film of two 10 μ m with similar face zone.By directly being evaporated, the aluminium electrode on the surface of cathode material, prepares sample of the present invention.
After sample is got wet with acetone, measure sample resistance value as the function of time.The result as illustrated in fig. 1 and 2.From these figure obviously as can be seen, in multilayer electrode embodiment when beginning resistance very high (Fig. 2).This value has increased a coefficient greater than 10 when sample is got wet.Because acetone evaporates from system, resistance value reduces, but does not reach its initial value.In the embodiment of the electrode that obtains by physical vapor deposition (Fig. 1), resistance increases slightly, evaporates the back at acetone from system and recovers initial value.
Example 2
The electrode of making in example 1 that gas deposition obtains that passes through uses with the polyethylene porous separator between anode and cathode material.Comprise EC for battery structure provides subsequently: DEC is the electrolyte composition of 1 mole of LiPF6 of 1: 1.Battery is no problem when the experience charge/discharge cycle.
Claims (11)
1. one kind will conduct electricity current-collector and be applied to method on the self-support type electrode, it is characterized in that, the conductive layer that forms current-collector is provided, because described layer is formed on the described surface on the spot, make conductive layer follow electrode surface.
2. method according to claim 1 is characterized in that, obtains described layer by physics or chemical vapor deposition, sputter or plating.
3. method according to claim 1 is characterized in that, uses physical vapor deposition.
4. according to the described method of claim 1 to 3, it is characterized in that, provide conductive layer with the form of putting.
5. according to the described method of claim 1 to 4, it is characterized in that, etch resistant layer is set on conductive layer.
6. the electrode that obtains by method that claim 1 to 5 limited and the assembly of conduction current-collector.
7. assembly according to claim 6 is characterized in that, conductive layer is set on anode.
8. assembly according to claim 7 is characterized in that, uses aluminium.
9. assembly according to claim 6 is characterized in that, conductive layer is set on negative electrode.
10. assembly according to claim 9 is characterized in that, uses copper.
11. battery, which floor form by following order: one deck or current-collector, anode, separator, negative electrode and current-collector and electrolyte, it is characterized in that one of them is described assembly of claim 7 or the described assembly of claim 9 at least in current-collector and anode assemblies and current-collector and the cathode assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN00127017A CN1334611A (en) | 2000-07-24 | 2000-07-24 | Method using conductive collector in self-supporting electrode, electrode, conductive collector and cell assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN00127017A CN1334611A (en) | 2000-07-24 | 2000-07-24 | Method using conductive collector in self-supporting electrode, electrode, conductive collector and cell assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1334611A true CN1334611A (en) | 2002-02-06 |
Family
ID=4592109
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN00127017A Pending CN1334611A (en) | 2000-07-24 | 2000-07-24 | Method using conductive collector in self-supporting electrode, electrode, conductive collector and cell assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1334611A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106299237A (en) * | 2016-09-27 | 2017-01-04 | 柔电（武汉）科技有限公司 | Self-supporting pole piece and preparation method thereof, battery and battery core thereof |
-
2000
- 2000-07-24 CN CN00127017A patent/CN1334611A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106299237A (en) * | 2016-09-27 | 2017-01-04 | 柔电（武汉）科技有限公司 | Self-supporting pole piece and preparation method thereof, battery and battery core thereof |
| CN106299237B (en) * | 2016-09-27 | 2019-06-28 | 武汉艾特米克超能新材料科技有限公司 | Self-supporting pole piece and preparation method thereof, battery and its battery core |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8023251B2 (en) | Hybrid energy storage device and method of making same | |
| JP5791613B2 (en) | Current collector with satin coating | |
| JP3482443B2 (en) | Electrode for non-aqueous electrolyte secondary battery and method for producing the same | |
| EP1088357A1 (en) | Microporous electrode or separator for use in a non-aqueous battery, and method of manufacturing | |
| KR20020010563A (en) | Supercapacitor structure and method of making same | |
| TW459411B (en) | Secondary battery, and its production process | |
| EP2176905B1 (en) | A plate for a bipolar battery and a bipolar battery | |
| CN113571672A (en) | Dry electrode, solid lithium ion battery and preparation method thereof | |
| CN1949422A (en) | Separator sheet and method for manufacturing electric double layer capacitor using the separator sheet | |
| CA2507399C (en) | Method for producing drawn coated metals and use of said metals in the form of a current differentiator for electrochemical components | |
| CN107819103B (en) | Electrode with increased active material content | |
| CN111312994A (en) | Composite negative plate and preparation method and application thereof | |
| CN110495035A (en) | Lithium ion secondary battery | |
| JP3422627B2 (en) | Crosslinked polymer solid electrolyte and battery | |
| JPH0268855A (en) | Manufacture of electrode for cell | |
| CN1334611A (en) | Method using conductive collector in self-supporting electrode, electrode, conductive collector and cell assembly | |
| KR100870604B1 (en) | Methods for producing a separator/electrode assembly for electrochemical elements | |
| JPH11283871A (en) | Current collector for electric double layer capacitor and electric double layer capacitor provided with the current collector | |
| JP3692735B2 (en) | Current collector for electric double layer capacitor and electric double layer capacitor | |
| WO2000060685A1 (en) | Method of applying an electrically conducting current collector on a self-supporting electrode and assembly of electrode and current collector | |
| JP3951390B2 (en) | Electric double layer capacitor, electrode body for the capacitor, and method for manufacturing the same | |
| KR20020011490A (en) | Method of applying an electrically conducting current collector on a self-supporting electrode, assembly of electrode and electrically conducting current collector, and battery | |
| JP6776978B2 (en) | An all-solid-state lithium-ion secondary battery including a negative electrode for an all-solid-state lithium-ion secondary battery and its negative electrode. | |
| JP2004213968A (en) | Electrode, and battery using it | |
| JP2770388B2 (en) | Manufacturing method of all solid state secondary battery |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |