CN1334610A - Separator and electrode, especially cathode or anode binding method and cell - Google Patents
Separator and electrode, especially cathode or anode binding method and cell Download PDFInfo
- Publication number
- CN1334610A CN1334610A CN 00126286 CN00126286A CN1334610A CN 1334610 A CN1334610 A CN 1334610A CN 00126286 CN00126286 CN 00126286 CN 00126286 A CN00126286 A CN 00126286A CN 1334610 A CN1334610 A CN 1334610A
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- China
- Prior art keywords
- isolator
- anode
- electrode
- negative electrode
- adhesive
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- 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.)
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- Y02E60/12—
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- Battery Electrode And Active Subsutance (AREA)
- Secondary Cells (AREA)
Abstract
A method utilized to bind the isolator to electrode by surface treating at least one of these parts such as isolators and electrodes is disclosed in the invention. The surface treatment includes oxidizing treatment such as plasma oxidizing or solution oxidizing.
Description
The present invention relates to the adhesive bonding method of isolator and electrode, particularly negative electrode or anode.The invention still further relates to continuously by one or more layers current collector anode, isolator, negative electrode, the battery that current collector and electrolyte are formed.
The method of bonding isolator and electrode can be from US Patent specification 5,470, knows in 357.The isolator membrane component of knowing from this US Patent specification is usually by the ethenylidene difluoro, and hexafluoropropylene copolymer and compatible organic softener composition prepare.This copolymer compositions also is used to prepare the electrode film element, because it can guarantee the capacitive at lamination interface.Then, by discrete component heating and extruding lamination are obtained final battery.Subsequently, remove solvent and dry member.The member of this drying is immersed in the electrolyte, and makes cell activation.
The shortcoming of this laminating method is that the selection that can be used for the isolator type of battery is restricted.Therefore, well-known, developed special isolator with inner fuse function.Therefore on certain temperature, the isolator with this inner fuse function no longer has porousness, conducting ion no longer.Therefore, it is desirable using this isolator with inner fuse function, because it provides extra protection to lithium battery.If battery charge is excessive or internal short-circuit takes place, then internal temperature raises, and battery quits work automatically.
So, the purpose of this invention is to provide the method that can use dissimilar isolators in conjunction with different anodes and cathode material.
According to the present invention, the method feature that this paper The initial segment is mentioned is that isolator is made by the host material that another is different from electrode, and the adhesive that the bonding utilization between isolator and the electrode can not dissolved in electrolyte is finished.
Should be understood that the employed term negative electrode electrode of making a comment or criticism here, the term anode refers to negative electrode.
For adhesive, preferably use heat or polymerizable binder, described adhesive provides to get mode (adotted manner) ready especially.By providing adhesive, can prevent to lose the porosity characteristic of electrode and/or isolator according to special shape.
In order to improve bonding between electrode and the isolator, preferably to isolator, oxidation processes, particularly plasma oxidation are carried out in the surface of anode and/or negative electrode, solution oxide or radiation effect.
In addition preferably to isolator, anode and/or the cathode surface of chemical functionalization utilize reactive group to carry out the modification processing as mentioned above.The reactive group that is fit to comprises acrylate group (acrylate groups), vinyl ether group, epoxide group and thiolene group.
The invention still further relates to continuously by current collector, anode, isolator, negative electrode, the battery that current collector and electrolyte constitute, the battery characteristics of describing according to the present invention is, anode, isolator and negative electrode are connected to each other according to the inventive method.Of the present invention these will be significantly with other aspect with reference to embodiment described below and be elaborated, and note that the material that the invention is not restricted to special use.
Anode is made
Preparation 5.3 gram middle carbon particulates (meso-carbon micro-grains), 5 gram naphthalanes, 0.1 gram-molecular weight is higher than the mixture of 100 ten thousand UHMWPE.Mixture is heated to 160 ℃ and cast film.Remove unnecessary solvent, film further makes its densification by roll-in.
Negative electrode is made
Except preparation comprises 5 gram LiCoO
2, 5 gram naphthalanes, outside first mixture of 0.1 gram UHMWPE and 0.3 gram carbon black, the manufacture method of negative electrode is identical with anode.Polymer is heated subsequently and handles with the method identical with negative electrode.After removing unnecessary solvent, obtain dry plate.In due form current collector is provided on negative electrode and the anode subsequently.
Bonding between isolator and the electrode
Anode of Huo Deing and cathode material can be provided heat adhesive based on paraffin according to the specific form of getting ready as mentioned above.The isolator of being made by porous polypropylene is provided between negative electrode and anode material subsequently and passes through heating and extrusion bonded.Dry battery components is immersed in subsequently by EC: DEC is 1 mole of LiPF of 1: 1
6In the electrolyte that constitutes.This battery can stand circulation.
Claims (9)
1, the adhesive bonding method of a kind of isolator and electrode, particularly negative electrode or anode is characterised in that, isolator is by the other host material preparation that is different from electrode, and the adhesive that the bonding utilization between isolator and the electrode can not dissolved in electrolyte is finished.
2,, be characterised in that the use heat adhesive according to the method for claim 1.
3,, be characterised in that the use polymerizable binder according to the method for claim 1.
4, according to the method for claim 1-3, being characterised in that to get form ready provides adhesive.
5,, be characterised in that to isolator oxidation processes has been carried out to improve bonding force in the surface of anode and/or negative electrode according to the method for claim 1.
6,, be characterised in that oxidation processes comprises plasma oxidation, solution oxide and radiation effect according to the method for claim 5.
7,, be characterised in that the surface of isolator, anode and/or negative electrode to chemical functionalization utilizes reactive group to carry out modification according to the method for claim 5-6.
8,, be characterised in that reactive group uses acrylate group, vinyl ether group, epoxide group and thiolene group according to the method for claim 7.
9, the battery that is made of one or more layers current collector, anode, isolator, negative electrode, current collector and electrolyte successively is characterised in that, anode, isolator and negative electrode are connected to each other according to the method for describing among the claim 1-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00126286 CN1334610A (en) | 2000-07-24 | 2000-07-24 | Separator and electrode, especially cathode or anode binding method and cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00126286 CN1334610A (en) | 2000-07-24 | 2000-07-24 | Separator and electrode, especially cathode or anode binding method and cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1334610A true CN1334610A (en) | 2002-02-06 |
Family
ID=4591811
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00126286 Pending CN1334610A (en) | 2000-07-24 | 2000-07-24 | Separator and electrode, especially cathode or anode binding method and cell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1334610A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7477012B2 (en) | 2004-03-25 | 2009-01-13 | Au Optronics Corp. | Organic light-emitting diode and method of fabricating the same |
-
2000
- 2000-07-24 CN CN 00126286 patent/CN1334610A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7477012B2 (en) | 2004-03-25 | 2009-01-13 | Au Optronics Corp. | Organic light-emitting diode and method of fabricating the same |
| US7695337B2 (en) | 2004-03-25 | 2010-04-13 | Au Optronics Corp. | Organic light-emitting diode and method of fabricating the same |
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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 |