CN102054953A - Processing method of septum for secondary lithium battery as well as secondary lithium battery - Google Patents
Processing method of septum for secondary lithium battery as well as secondary lithium battery Download PDFInfo
- Publication number
- CN102054953A CN102054953A CN2010105840604A CN201010584060A CN102054953A CN 102054953 A CN102054953 A CN 102054953A CN 2010105840604 A CN2010105840604 A CN 2010105840604A CN 201010584060 A CN201010584060 A CN 201010584060A CN 102054953 A CN102054953 A CN 102054953A
- Authority
- CN
- China
- Prior art keywords
- lithium battery
- barrier film
- processing method
- septum
- serondary
- 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
Abstract
The invention provides a processing method of a septum for a secondary lithium battery. The method comprises the following steps: a, carrying out plasma body processing on the secondary lithium battery by using the septum; and b, carrying out modification processing on the secondary lithium battery obtained from the step a by using the septum in a sulphuric acid solution, wherein the mass concentration of the sulphuric acid solution is not less than 70%. The invention provides the secondary lithium battery which comprises a positive electrode, a lithium metal negative electrode, an electrolyte and a septum arranged between the positive electrode and the lithium metal negative electrode, and the septum is processed by the method of the technical scheme above. When the modified septum provided by the invention is used for the secondary lithium battery taking lithium metal as a negative electrode, the interface stability of the septum and the lithium metal negative electrode can be improved, so that the deposit of lithium on the negative electrode is more uniform, the formation of dendritic crystal is inhibited, the service life of the secondary lithium battery is improved, and the use safety of the secondary lithium battery is increased. In addition, the processing method provided by the invention has simple technical process, is simple and convenient to operate, and is suitable for industrialized application.
Description
Technical field
The invention belongs to technical field of lithium batteries, relate in particular to processing method and the serondary lithium battery of a kind of serondary lithium battery with barrier film.
Background technology
Advantages such as serondary lithium battery has volumetric specific energy height, long service life, rated voltage height, self-discharge rate is lower, in light weight, operating temperature range is wide are widely used as the driving power of equipment such as mobile phone, camera, video camera, notebook computer, electric automobile.
Serondary lithium battery is generally with lithium metal, lithium alloy or lithium composite xoide, as LiCoO
2Deng for anodal, be negative pole with carbonaceous material or lithium metal.But, be that the serondary lithium battery volume of negative pole is bigger with the carbonaceous material, can not satisfy microelectronic device, as be used for the treatment of glaucomatous intraocular and put the requirement of probe the battery volume; And lithium anode has lower current potential and bigger discharge capacity, can satisfy the requirement of microelectronic device to the battery miniaturization.But in the cyclic process of battery charge-discharge, lithium metal can deposit on negative pole, crystallization forms dendritic dendrite.When dendritic growth to a certain degree will fractureing, produce " dead lithium ", cause the irreversible of lithium, the battery charging and discharging actual capacity is reduced, cycle life reduces; Dendrite also might pierce through barrier film, and positive pole is linked to each other with negative pole, makes battery produce internal short-circuit, and a large amount of heat of internal short-circuit generation can make battery catch fire even blast.
For cycle life and the safety in utilization that increases battery, prior art generally suppresses the growth of dendrite by the method for improving electrolyte or improvement negative material.As; application number is that 00104319.6 Chinese patent literature discloses a kind of polymer dielectric; comprise and have the polymer gel that contains electrolytical nonaqueous solvents; described polymer gel comprises (I) but by at least a monomer with vinyl of copolymerization unit that forms and the unit that (II) is formed by at least a compound, described compound is selected from the compound that (II-a) has the compound of two acryloyl groups and (a gathering) oxyethylene group and (II-b) have an acryloyl group and (a gathering) oxyethylene group.Polymer chain in this polymer dielectric covers the surface of negative pole, makes lithium ion be deposited in negative terminal surface equably, makes the difficult formation of dendrite; And after dendrite formed, polymer network can suppress its growth.But this polymer gel mechanical strength is lower than the mechanical strength of solid polymer, is unfavorable for that battery keeps good performance.And for example, be negative pole with alloys such as Li-Al, Li-Cd-Pb, Li-Al-Mn, can suppress the formation of dendrite, the ability that recharges of battery is improved, but the increase and decrease of lithium can cause phase transformation in the charge and discharge process, makes the alloy change in volume obvious, the mechanical stability variation; And the lithium in the electrode is partly replaced by aluminium, Cd, Pb, Mn etc., makes that the capacity of battery reduces, energy density reduces.
Summary of the invention
In view of this, the technical problem to be solved in the present invention is to provide processing method and the serondary lithium battery of a kind of serondary lithium battery with barrier film, through the serondary lithium battery barrier film better mechanical property after the method processing provided by the invention, serondary lithium battery capacity provided by the invention is higher, cycle life is longer.
The invention provides the processing method of a kind of serondary lithium battery, may further comprise the steps with barrier film:
A) serondary lithium battery is carried out plasma treatment with barrier film;
B) serondary lithium battery that step a) is obtained carries out modification processing, the mass concentration of described sulfuric acid solution 〉=70% with barrier film in sulfuric acid solution.
Preferably, described serondary lithium battery barrier film is polypropylene diaphragm or polyethylene barrier film.
Preferably, the atmosphere of carrying out plasma treatment in the described step a) is one or more in oxygen, argon gas, carbon dioxide and the nitrogen.
Preferably, the power that carries out plasma treatment in the described step a) is 10W～200W.
Preferably, the time of carrying out plasma treatment in the described step a) is 1min～300min.
Preferably, carrying out the time that modification handles in the described step b) is 1min～300min.
Preferably, carrying out the temperature that modification handles in the described step b) is 10 ℃～100 ℃.
Preferably, the mass concentration of described sulfuric acid solution 〉=90%.
The present invention also provides a kind of serondary lithium battery, comprise positive pole, lithium anode, electrolyte and be arranged on positive pole and lithium anode between barrier film, the barrier film of described barrier film for obtaining after handling through the described method of technique scheme.
Preferably, described just very cobalt acid lithium, lithium nickel cobalt dioxide, nickel LiMn2O4, nickel manganese cobalt acid lithium, LiMn2O4 or LiFePO4.
Compared with prior art, the present invention handles with barrier film serondary lithium battery, promptly at first serondary lithium battery is carried out plasma treatment with barrier film, carries out modification then in the sulfuric acid solution of mass concentration 〉=70%.In above-mentioned processing procedure, plasma treatment can increase the surface activity of serondary lithium battery with barrier film, thereby makes the sulfonic acid group in the concentrated sulfuric acid be grafted on membrane surface, realizes the modification of barrier film.When being used for lithium metal and being the serondary lithium battery of negative pole through the barrier film of modification, can improve the interface stability of barrier film and lithium anode, thereby it is more even that lithium is deposited on negative pole, suppress the formation of dendrite, improve the useful life of serondary lithium battery, increase the safety in utilization of serondary lithium battery.In addition, processing method technological process provided by the invention is simple, easy and simple to handle, cost is lower, is suitable for industrial applications.
Serondary lithium battery provided by the invention comprises the barrier film after lithium anode and process method provided by the invention are handled, the use of lithium anode makes battery have higher volume and capacity ratio, can satisfy the requirement of microelectronic device to the capacity and the volume of battery; And described after treatment barrier film can suppress the formation of dendrite, improves the useful life of serondary lithium battery, increases the safety in utilization of serondary lithium battery.Experiment shows that the serondary lithium battery that adopts undressed barrier film is when cyclic voltammetric is tested, and when scanning 9 times, barrier film is promptly pierced through by dendrite, the electric current starting oscillation; And the serondary lithium battery that adopts the barrier film after handling through method provided by the invention is when cyclic voltammetric is tested, and scanning is more than 40 times the time, and barrier film is just pierced through the electric current starting oscillation by dendrite.
Description of drawings
The linear scan cyclic voltammetry curve of the serondary lithium battery that Fig. 1 provides for the embodiment of the invention 1;
The linear scan cyclic voltammetry curve of the serondary lithium battery that Fig. 2 provides for comparative example 1 of the present invention.
Embodiment
The invention provides the processing method of a kind of serondary lithium battery, may further comprise the steps with barrier film:
A) serondary lithium battery is carried out plasma treatment with barrier film;
B) serondary lithium battery that step a) is obtained carries out modification processing, the mass concentration of described sulfuric acid solution 〉=70% with barrier film in sulfuric acid solution.
The inventor is from the serondary lithium battery barrier film, by barrier film is carried out modification, improve the interface stability between barrier film and the lithium anode, thereby suppressed the formation of dendrite, improved the cycle life of serondary lithium battery, the safety in utilization of increase serondary lithium battery.In addition, processing method technological process provided by the invention is simple, easy and simple to handle, cost is lower, is suitable for industrial applications.
The present invention does not have particular restriction to described serondary lithium battery with barrier film, considers from cost factor, is preferably polyethylene barrier film or polypropylene diaphragm.
At first serondary lithium battery is carried out plasma treatment with barrier film, the purpose of carrying out described plasma treatment is to increase the surface activity of barrier film, for follow-up modification creates conditions.Described plasma treatment is meant barrier film is placed plasma atmosphere, utilize the special nature of plasma that membrane surface is handled, make inactive chemical bonds such as the c h bond of membrane surface and C-C key destroyed, form active higher dangling bonds, the grafting of follow-up sulfonic group is realized smoothly.
The present invention can carry out the short range plasma treatment with barrier film to described serondary lithium battery, also can carry out remote plasma and handle.The present invention preferably uses inductively coupled plasma or capacitance coupling plasma to handle, atmosphere when carrying out plasma treatment is preferably one or more in oxygen, argon gas, carbon dioxide and the nitrogen, more preferably one or both in oxygen and the nitrogen;
According to the present invention, the gas flow when carrying out plasma treatment is preferably 1mL/min～500mL/min, and more preferably 2mL/min～400mL/min most preferably is 3mL/min～100mL/min;
According to the present invention, the power when carrying out plasma treatment is preferably 10W～200W, and more preferably 20W～100W most preferably is 30W～50W;
According to the present invention, the time of carrying out plasma treatment is preferably 1min～300min, and more preferably 1min～100min most preferably is 5min～50min.
To in sulfuric acid solution, carry out modification through the barrier film after the plasma treatment and handle, and make sulfonic acid group be grafted on membrane surface, improve the interface stability of barrier film and lithium anode, thereby suppress the formation of dendrite.
The present invention carries out modification to described through the barrier film after the plasma treatment with the sulfuric acid solution of mass concentration 〉=70%, and the mass concentration of described sulfuric acid solution is preferred 〉=90%, and more preferably 98%.
The present invention will be immersed in through the barrier film after the plasma treatment in the sulfuric acid solution and realize its modification.According to the present invention, the temperature of described immersion is preferably 10 ℃～100 ℃, more preferably 30 ℃～95 ℃, most preferably is 50 ℃～90 ℃; The time of described immersion is preferably 1min～300min, and more preferably 1min～100min most preferably is 5min～50min.
It is in the serondary lithium battery of negative pole that described serondary lithium battery through modification can directly apply to the lithium metal with barrier film, suppresses the formation of dendrite; Also can be applied in the serondary lithium battery that lithium alloy is a negative pole, collaborative lithium alloy suppresses the formation of dendrite.But because lithium alloy can reduce the capacity of serondary lithium battery as negative pole, therefore, the barrier film after the described modification is preferred in the serondary lithium battery that lithium metal is a negative pole.
The present invention also provides a kind of serondary lithium battery, comprise positive pole, lithium anode, electrolyte and be arranged on positive pole and lithium anode between barrier film, the barrier film of described barrier film for obtaining after handling through the described method of technique scheme.
In order to make described serondary lithium battery have higher volume and capacity ratio, the present invention adopts lithium anode, and positive electrode is not had particular restriction, can be preferably cobalt acid lithium for well known to a person skilled in the art transition metal oxides such as cobalt acid lithium, lithium nickel cobalt dioxide, nickel LiMn2O4, nickel manganese cobalt acid lithium, LiMn2O4, LiFePO4.
The present invention does not have particular restriction to described electrolyte, can be for well known to a person skilled in the art the nonaqueous electrolytic solution that is used for serondary lithium battery, as contain LiPF
6, LiBF
4, LiAsF
6, LiClO
4, LiCH
3SO
3, LiN (SO
2CF
3)
2, LiC (SO
2CF
3)
3, LiAlCl
4, LiSiF
6, LiB (C
6H
5)
4, one or more the electrolytical nonaqueous electrolytic solutions among LiCl and the LiBr, be preferably LiPF
6Nonaqueous electrolytic solution.
In described serondary lithium battery, be provided with barrier film between positive pole and the lithium anode, the barrier film of described barrier film for obtaining after handling through the described method of technique scheme, be that described barrier film at first passes through plasma treatment, in the sulfuric acid solution of mass concentration 〉=70%, carry out modification then and handle.Barrier film after treatment can improve the interface stability of barrier film and lithium anode, thereby suppresses the formation of dendrite.
In serondary lithium battery provided by the invention, the use of lithium anode makes battery have higher volume and capacity ratio, can satisfy the requirement of microelectronic device to the capacity and the volume of battery; And described after treatment barrier film can suppress the formation of dendrite, improves the useful life of serondary lithium battery, increases the safety in utilization of serondary lithium battery.Experiment shows that the serondary lithium battery that adopts undressed barrier film is when cyclic voltammetric is tested, and when scanning 9 times, barrier film is promptly pierced through by dendrite, the electric current starting oscillation; And the serondary lithium battery that adopts the barrier film after handling through method provided by the invention is when cyclic voltammetric is tested, and scanning is more than 40 times the time, and barrier film is just pierced through the electric current starting oscillation by dendrite.
In order to further specify the present invention, processing method and the serondary lithium battery of serondary lithium battery provided by the invention with barrier film is described in detail below in conjunction with embodiment.
Polypropylene diaphragm is cleaned up, dry back adopts the method for glow discharge to carry out the plasma treatment that power is 30W, 5min with the plasma treatment instrument, the coil distance 8cm of barrier film and plasma treatment instrument, and processing atmosphere is oxygen, gas flow is 20mL/min, and pressure is 30Pa.
To put into mass concentration rapidly through the barrier film of plasma treatment is that 98% sulfuric acid soaks, and soaking temperature is 80 ℃, soaks 5min, obtains the barrier film of modification.
Be respectively positive pole and negative pole with the lithium metal, the barrier film of described modification placed between positive pole and the negative pole, with the LiPF of 1mol/L
6Organic solution be that electrolyte is assembled into Li/ barrier film/Li symmetry battery, wherein, LiPF
6Organic solution in organic solvent be that volume ratio is 1: 1 ethylene carbonate and a diethyl carbonate.
Adopt cyclic voltammetry to test to described lithium battery, the result is referring to Fig. 1, the linear scan cyclic voltammetry curve of the serondary lithium battery that Fig. 1 provides for the embodiment of the invention 1.As shown in Figure 1, when current potential when changing between-1500mV～1500mV, the serondary lithium battery that the embodiment of the invention 1 provides is when scanning 40 times, electric current is starting oscillation, explanation is after scanning 40 times, and the Li dendrite that barrier film just is generated pierces through and causes electric current to vibrate.
Comparative example 1
Be respectively positive pole and negative pole with the lithium metal, will place between positive pole and the negative pole with identical, undressed polypropylene diaphragm among the embodiment 1, with the LiPF of 1mol/L
6Organic solution be that electrolyte is assembled into Li/ barrier film/Li symmetry battery, wherein, LiPF
6Organic solution in organic solvent be that volume ratio is 1: 1 ethylene carbonate and a diethyl carbonate.
Adopt cyclic voltammetry to test to described lithium battery, the result is referring to Fig. 2, the linear scan cyclic voltammetry curve of the serondary lithium battery that Fig. 2 provides for comparative example 1 of the present invention.As shown in Figure 2, when current potential when changing between-1500mV～1500mV, the serondary lithium battery that comparative example 1 of the present invention provides is when scanning 9 times, electric current is with regard to starting oscillation, explanation is after scanning 9 times, and the Li dendrite that barrier film just has been generated pierces through and causes electric current to vibrate.
By Fig. 1 and Fig. 2 as can be known, compare with the serondary lithium battery that adopts undressed barrier film, adopt the dendrite of the serondary lithium battery of treated barrier film to form slower, cycle life is longer, illustrate that the barrier film that adopts after method provided by the invention is handled has effectively suppressed the formation of dendrite, improve the useful life of serondary lithium battery, increased the safety in utilization of serondary lithium battery.
The polyethylene barrier film is cleaned up, dry back adopts the method for glow discharge to carry out the plasma treatment that power is 80W, 1min with the plasma treatment instrument, the coil distance 8cm of barrier film and plasma treatment instrument, handling atmosphere is that volume ratio is 1: 1 the nitrogen and the mist of oxygen, gas flow is 5mL/min, and pressure is 30Pa.
To put into mass concentration rapidly through the barrier film of plasma treatment is that 98% sulfuric acid soaks, and soaking temperature is 90 ℃, soaks 1min, obtains the barrier film of modification.
Be respectively positive pole and negative pole with the lithium metal, the barrier film of described modification placed between positive pole and the negative pole, with the LiPF of 1mol/L
6Organic solution be that electrolyte is assembled into Li/ barrier film/Li symmetry battery, wherein, LiPF
6Organic solution in organic solvent be that volume ratio is 1: 1 ethylene carbonate and a diethyl carbonate.
Adopt cyclic voltammetry to test to described lithium battery, the result shows, when current potential when changing between-1500mV～1500mV, the serondary lithium battery that the embodiment of the invention 2 provides is when scanning 45 times, electric current is starting oscillation, explanation is after scanning 45 times, and the Li dendrite that barrier film just is generated pierces through and causes electric current to vibrate.
The polyethylene barrier film is cleaned up, dry back adopts the method for glow discharge to carry out the plasma treatment that power is 150W, 30min with the plasma treatment instrument, the coil distance 8cm of barrier film and plasma treatment instrument, handling atmosphere is that volume ratio is 1: 1 the nitrogen and the mist of oxygen, gas flow is 100mL/min, and pressure is 30Pa.
To put into mass concentration rapidly through the barrier film of plasma treatment is that 90% sulfuric acid soaks, and soaking temperature is 20 ℃, soaks 30min, obtains the barrier film of modification.
Be respectively positive pole and negative pole with the lithium metal, the barrier film of described modification placed between positive pole and the negative pole, with the LiPF of 1mol/L
6Organic solution be that electrolyte is assembled into Li/ barrier film/Li symmetry battery, wherein, LiPF
6Organic solution in organic solvent be that volume ratio is 1: 1 ethylene carbonate and a diethyl carbonate.
Adopt cyclic voltammetry to test to described lithium battery, the result shows, when current potential when changing between-1500mV～1500mV, the serondary lithium battery that the embodiment of the invention 3 provides is when scanning 43 times, electric current is starting oscillation, explanation is after scanning 43 times, and the Li dendrite that barrier film just is generated pierces through and causes electric current to vibrate.
Embodiment 4
Polypropylene diaphragm is cleaned up, dry back adopts the method for glow discharge to carry out the plasma treatment that power is 100W, 20min with the plasma treatment instrument, the coil distance 8cm of barrier film and plasma treatment instrument, handling atmosphere is that volume ratio is 1: 1 the nitrogen and the mist of oxygen, gas flow is 80mL/min, and pressure is 30Pa.
To put into mass concentration rapidly through the barrier film of plasma treatment is that 80% sulfuric acid soaks, and soaking temperature is 50 ℃, soaks 60min, obtains the barrier film of modification.
Be negative pole with the lithium metal, be positive pole, the barrier film of described modification is placed between positive pole and the negative pole, with the LiPF of 1mol/L with cobalt acid lithium
6Organic solution be that electrolyte is assembled into lithium battery, wherein, LiPF
6Organic solution in organic solvent be that volume ratio is 1: 1 ethylene carbonate and a diethyl carbonate.
Adopt cyclic voltammetry to test to described lithium battery, the result shows, when current potential when changing between-1500mV～1500mV, the serondary lithium battery that the embodiment of the invention 4 provides is when scanning 40 times, electric current is starting oscillation, explanation is after scanning 40 times, and the Li dendrite that barrier film just is generated pierces through and causes electric current to vibrate.
The above only is a preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (10)
1. a serondary lithium battery may further comprise the steps with the processing method of barrier film:
A) serondary lithium battery is carried out plasma treatment with barrier film;
B) serondary lithium battery that step a) is obtained carries out modification processing, the mass concentration of described sulfuric acid solution 〉=70% with barrier film in sulfuric acid solution.
2. processing method according to claim 1 is characterized in that, described serondary lithium battery barrier film is polypropylene diaphragm or polyethylene barrier film.
3. processing method according to claim 1 is characterized in that, the atmosphere of carrying out plasma treatment in the described step a) is one or more in oxygen, argon gas, carbon dioxide and the nitrogen.
4. processing method according to claim 1 is characterized in that, the power that carries out plasma treatment in the described step a) is 10W～200W.
5. processing method according to claim 1 is characterized in that, the time of carrying out plasma treatment in the described step a) is 1min～300min.
6. processing method according to claim 1 is characterized in that, the time of carrying out the modification processing in the described step b) is 1min～300min.
7. processing method according to claim 1 is characterized in that, the temperature of carrying out the modification processing in the described step b) is 10 ℃～100 ℃.
8. according to any described processing method of claim 1～7, it is characterized in that the mass concentration of described sulfuric acid solution 〉=90%.
9. serondary lithium battery, comprise positive pole, lithium anode, electrolyte and be arranged on positive pole and lithium anode between barrier film, it is characterized in that the barrier film of described barrier film for obtaining after handling through any described method of claim 1～8.
10. serondary lithium battery according to claim 9 is characterized in that, described just very cobalt acid lithium, lithium nickel cobalt dioxide, nickel LiMn2O4, nickel manganese cobalt acid lithium, LiMn2O4 or LiFePO4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105840604A CN102054953A (en) | 2010-12-10 | 2010-12-10 | Processing method of septum for secondary lithium battery as well as secondary lithium battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105840604A CN102054953A (en) | 2010-12-10 | 2010-12-10 | Processing method of septum for secondary lithium battery as well as secondary lithium battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102054953A true CN102054953A (en) | 2011-05-11 |
Family
ID=43959083
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105840604A Pending CN102054953A (en) | 2010-12-10 | 2010-12-10 | Processing method of septum for secondary lithium battery as well as secondary lithium battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102054953A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102610855A (en) * | 2012-04-06 | 2012-07-25 | 浙江纺织服装职业技术学院 | Lithium ferric phosphate battery with improved electrode performance and manufacturing method thereof |
| CN102629675A (en) * | 2012-04-25 | 2012-08-08 | 苏州大学 | Method for improving diaphragm property of secondary battery, diaphragm of secondary battery and secondary battery |
| CN108604702A (en) * | 2016-10-10 | 2018-09-28 | 株式会社Lg化学 | Secondary cell element cell and its manufacturing method with improved wetability |
| CN109417186A (en) * | 2016-08-12 | 2019-03-01 | 株式会社Lg化学 | Electrode assembly including part combines each other electrode and partition |
| CN110364659A (en) * | 2018-03-26 | 2019-10-22 | 华硕电脑股份有限公司 | The manufacturing method of coiled battery |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5578400A (en) * | 1992-08-11 | 1996-11-26 | Saft | Grafted microporous separator for electrochemical generator and a process for its production |
| KR100485352B1 (en) * | 2003-02-20 | 2005-04-28 | 한국전자통신연구원 | Method for manufacturing surface-treated porous polymer membranes |
| CN101237034A (en) * | 2007-01-23 | 2008-08-06 | 卡尔弗罗伊登柏格两合公司 | Layer with insulated fibres and electrochemical cell |
| CN101257106A (en) * | 2008-03-13 | 2008-09-03 | 深圳市富易达电子科技有限公司 | Method for modifying polyolefin battery diaphragm paper |
| CN101436651A (en) * | 2007-11-16 | 2009-05-20 | Sk能源 | Microporous polyethylene film with improved strength, permeability and surface energy |
| CN101434708A (en) * | 2008-12-19 | 2009-05-20 | 成都中科来方能源科技有限公司 | Aqueous polymer modified micropore polyolefin barrier diaphragm, and preparation and use thereof |
| CN101950799A (en) * | 2009-07-08 | 2011-01-19 | 日本高度纸工业株式会社 | Cell diaphragm and secondary cell |
-
2010
- 2010-12-10 CN CN2010105840604A patent/CN102054953A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5578400A (en) * | 1992-08-11 | 1996-11-26 | Saft | Grafted microporous separator for electrochemical generator and a process for its production |
| KR100485352B1 (en) * | 2003-02-20 | 2005-04-28 | 한국전자통신연구원 | Method for manufacturing surface-treated porous polymer membranes |
| CN101237034A (en) * | 2007-01-23 | 2008-08-06 | 卡尔弗罗伊登柏格两合公司 | Layer with insulated fibres and electrochemical cell |
| CN101436651A (en) * | 2007-11-16 | 2009-05-20 | Sk能源 | Microporous polyethylene film with improved strength, permeability and surface energy |
| CN101257106A (en) * | 2008-03-13 | 2008-09-03 | 深圳市富易达电子科技有限公司 | Method for modifying polyolefin battery diaphragm paper |
| CN101434708A (en) * | 2008-12-19 | 2009-05-20 | 成都中科来方能源科技有限公司 | Aqueous polymer modified micropore polyolefin barrier diaphragm, and preparation and use thereof |
| CN101950799A (en) * | 2009-07-08 | 2011-01-19 | 日本高度纸工业株式会社 | Cell diaphragm and secondary cell |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102610855A (en) * | 2012-04-06 | 2012-07-25 | 浙江纺织服装职业技术学院 | Lithium ferric phosphate battery with improved electrode performance and manufacturing method thereof |
| CN102629675A (en) * | 2012-04-25 | 2012-08-08 | 苏州大学 | Method for improving diaphragm property of secondary battery, diaphragm of secondary battery and secondary battery |
| CN109417186A (en) * | 2016-08-12 | 2019-03-01 | 株式会社Lg化学 | Electrode assembly including part combines each other electrode and partition |
| CN108604702A (en) * | 2016-10-10 | 2018-09-28 | 株式会社Lg化学 | Secondary cell element cell and its manufacturing method with improved wetability |
| CN108604702B (en) * | 2016-10-10 | 2021-05-11 | 株式会社Lg化学 | Unit cell for secondary battery having improved wettability and method for manufacturing the same |
| CN110364659A (en) * | 2018-03-26 | 2019-10-22 | 华硕电脑股份有限公司 | The manufacturing method of coiled battery |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108448058B (en) | Surface modification method for lithium metal battery lithium cathode and lithium metal battery | |
| JP3978881B2 (en) | Non-aqueous electrolyte and lithium secondary battery using the same | |
| US7422826B2 (en) | In situ thermal polymerization method for making gel polymer lithium ion rechargeable electrochemical cells | |
| CN103682356A (en) | Lithium ion battery anode material and preparation method thereof | |
| CN101563808A (en) | Gel polymer electrolyte composition, gel polymer electrolyte and electrochemical device comprising the same | |
| EP2835855B1 (en) | Lithium-air battery and preparation method therefor | |
| CN112259789B (en) | Polyether solid polymer electrolyte, preparation method thereof and solid battery comprising polyether solid polymer electrolyte | |
| KR101431259B1 (en) | Additive for non-aqueous electrolyte and secondary battery using the same | |
| CN102054953A (en) | Processing method of septum for secondary lithium battery as well as secondary lithium battery | |
| KR102143100B1 (en) | Non-aqueous liquid electrolyte, lithium secondary battery comprising the same and preparation method thereof | |
| CN110444803A (en) | A kind of lithium ion battery structure of semisolid and preparation method thereof | |
| JPH08306367A (en) | Nonaqueous polymer battery | |
| CN102097653A (en) | Electrolyte used for Li-S battery, Li-S battery and method for preparing electrolyte membrane contained in same | |
| KR20090070140A (en) | Coating material for current collector in secondary battery | |
| JP4168241B2 (en) | Non-aqueous electrolyte battery | |
| CN111261873A (en) | N-MnO2Preparation and application of/S composite material | |
| CN108117056B (en) | Preparation method of graphene-coated plasma modified mesocarbon microbeads | |
| CN114512708A (en) | Preparation method and application of lithium ion composite solid electrolyte | |
| CN109873111B (en) | High-specific-surface-area lithium metal cathode and preparation and application thereof | |
| CN111430779B (en) | Electrolyte raw material composition, electrolyte, lithium ion secondary battery and preparation method thereof | |
| JP4258711B2 (en) | Non-aqueous electrolyte battery | |
| CN115863738A (en) | Secondary lithium battery using composite quasi-solid electrolyte membrane and preparation method thereof | |
| CN112864527B (en) | Preparation method of Mxene/PVDF lithium-sulfur battery diaphragm | |
| JP2005011688A (en) | Nonaqueous electrolyte secondary battery positive electrode activator and manufacturing method of the same | |
| CN114927762A (en) | Fluorinated sulfonyl electrolyte, preparation method and application thereof, and lithium metal battery |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20110511 |