CN1556557A - Notebook computer ultra high specific energy lithium battery using new type eletrolyte diaphram - Google Patents
Notebook computer ultra high specific energy lithium battery using new type eletrolyte diaphram Download PDFInfo
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- CN1556557A CN1556557A CNA2003101208282A CN200310120828A CN1556557A CN 1556557 A CN1556557 A CN 1556557A CN A2003101208282 A CNA2003101208282 A CN A2003101208282A CN 200310120828 A CN200310120828 A CN 200310120828A CN 1556557 A CN1556557 A CN 1556557A
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- lithium battery
- notebook computer
- polymer
- specific energy
- polymer electrolyte
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- 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
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Abstract
The invention provides a polymer electrolyte membrane and a technology for producing super high-energy-density lithium battery for notebook computer. The character of the membrane lies in: the membrane uses a sulfur resisting plasticizing agent. The polymer electrolyte film is mainly made up of 50wt. % polymer base body, 5-30wt. % conductive lithium salt, and 5-35wt. % sulfur resisting plasticizing agent and 10wt. % nanometer ceramic additives. The notebook can work for 8 hours continuously by using the super high-energy-density battery made with the polymer electrolyte film.
Description
Technical field
Patent of the present invention relates to the lithium battery manufacturing technology of notebook computer.
Background technology
Mostly be 3-4 hour the service time of cells in notebook computer greatly in the market now.Not long ago IBM releases 7 sections and is described as the PC product of " cavalerie mosla herb battle array " simultaneously, and the high power lithium battery of this super light and slim size notebook computer of ThinkPadX22 has wherein reached 5 hours service time.In order to satisfy user's higher requirement, the most frequently used way is installed external lithium battery exactly, and as the clear positive A820 of the notebook computer of association, the user can rely on two batteries to finish 8 hours power free operate as normal; Japanese trader JVC company release standard is equipped with mini Centrino notebook computer---the InterLink MP-XP7310LL of external high-capacity lithium battery, and farm labourer does the time and can reach 9.5 hours (built-in lithium battery+external high-capacity lithium battery).External power supply is installed can increase the weight of notebook computer undoubtedly, carries just very inconvenient.
Lithium battery is under the qualification of volume and weight, and off-capacity is the basic reason that causes the notebook computer stand-by time short.The capacity of single lithium battery mainly is subjected to the power-carrying restriction of the positive pole and the negative material of battery.The anode material of lithium battery of ordinary skill employing at present mostly is LiCoO
2, its actual specific capacity has only 140mAh/g.Negative material mostly is LiC
6, its actual specific capacity also has only 350mAh/g.At this situation, the researcher has proposed to make negative material with lithium metal, because the specific capacity of lithium metal can reach 3860mAh/g.Make positive electrode (CN1387271A) with sulfur-containing compound, because the specific capacity of sulfur-containing compound reaches as high as 1500mAh/g.Adopt the specific energy of lithium battery of such new material both positive and negative polarity system and volumetric specific energy height greatly, the lithium battery of promptly so-called superelevation specific energy (US Patent No.5523179) (US Patent No.228262).The lithium battery of superelevation specific energy is fit to adopt solid electrolyte diaphragm or solid polymer electrolyte barrier film owing to used lithium metal to make negative material.(the 43rd time Japanese battery discussion 3A01) can not stop the dissolving diffusion of sulphur positive pole in electrolyte to the polymer dielectric (J.Power Sources, 89,219) of this class single-layer septum fully at present.Sulphur is diffused into battery cathode can cause that side reaction takes place, and causes battery cycle life sharply to descend.
Summary of the invention
The objective of the invention is in order to overcome the shortcoming of above technology, a kind of single-layer septum of new type of polymer electrolyte is provided, and provide the method for making superelevation specific energy lithium battery with this kind electrolyte membrance, use this battery can realize notebook computer 8 hours these targets of continuous firing of once charging, and the cycle life of battery can reach more than 200 times.
A kind of polymer dielectric single-layer septum provided by the invention and the method that adopts this kind electrolyte membrance to make superelevation specific energy lithium battery comprise:
I. the manufacture method of polymer electrolyte diaphragm
The characteristics of polymer dielectric of the present invention are, use the plasticizer that anti-sulphur effect is arranged in polymer electrolyte diaphragm, and this plasticizer and polymer-matrix are cross-linked to form network structure, play the effect that stops sulphur to spread.
50wt.% polymeric matrix (oxidic polyethylene (PEO), or polymethyl methacrylate (PMMA), or polyacrylonitrile (PAN), or Kynoar (PVDF), or Kynoar and hexafluoropropylene copolymer (PVDF-HFP)) is dissolved in the CH of 3-4 times of quality
3In the CN solvent.Then, add 5-30wt.% electric conducting lithium salt (Li (CF
3SO
2)
2N, or LiClO
4, or LiAsO
6, or LiBF
4, or LiPF
6, or LiSCN, or LiI, or LiCF
3SO
3Or Li (C
2F
5SO
3)
2N) and the nano ceramics additive (TiO of 10wt.%
2, or A1
2O
3, or BaTiO
3, or SiO
2, or CaCO
3), fully mix the electrolyte system that forms high conductivity.Add a kind of general formula I epoxy resin that can be molten fully altogether as detesting the sulphur plasticizer in above slurry, consumption is 5-35wt.%, and fully blended under agitation is 2 hours, and the slurry of cast is passed to high pure nitrogen 2 hours to remove solvent C H
3CN, the certain thickness membrane for polymer that obtains 60 ℃ of-100 ℃ of vacuumizes, crosslinked 5 hours, obtains preventing the electrolyte membrance of sulphur diffusion.
General formula I epoxy resin is as follows:
R
1, R
2, R
3, R
4Be alkyl
N, m, x are 1～20 positive integer
Polymer electrolyte diaphragm electricity of the present invention reaches 1.2 * 10 to rate
-3Scm
-1
II. use the poly-lithium battery of electrolyte membrance manufacturing of the present invention
Anodal: 70wt.% sulphur simple substance positive active material, after the abundant ground and mixed of PVDF adhesive of 15wt.% acetylene black conductive additive and 15wt.% is even, presses mass ratio and add CH at 1: 10
3The CN solvent also fully stirred 5 hours, slurry was coated on the metal aluminum foil of 5 micron thickness, after 5 hours, was pressed into the anode composite of 120 micron thickness 60 ℃ of vacuumizes subsequently.
Negative pole: the thin metal lithium sheet negative pole of 50 micron thickness.
With the polymer electrolyte diaphragm of I of the present invention, anode composite and thin metal lithium sheet negative pole are by rolling up the battery that rich sealing-in is prepared into the superelevation specific energy.
Description of drawings
Fig. 1 is the charging curve with the lithium battery of novel electrolytes barrier film preparation.
Fig. 2 is the discharge curve with the lithium battery of novel electrolytes barrier film preparation.
Fig. 3 is the charging capacity of superelevation specific energy battery of the present invention and the graph of a relation of cycle life number of times.
Fig. 4 is the discharge capacity of superelevation specific energy battery of the present invention and the graph of a relation of cycle life number of times.
Embodiment
Adopt the polymer electrolyte diaphragm of I of the present invention, according to the poly-lithium battery of the poly-lithium battery manufacture method manufacturing of II of the present invention.
The main performance and the parameter of battery are as follows:
Metal lithium sheet negative pole: sulphur simple substance positive pole=3: 1 (Capacity Ratio)
Anodal thickness: 0.12mm
Negative pole thickness: 0.05mm
Polymer electrolyte diaphragm thickness: 0.06mm
Charging voltage: 3.2V
Discharge voltage: 1.5V
The density of charging current: 200 μ A/cm
2
Discharge current density: 200 μ A/cm
2
Battery capacity: 3000mAh
The charging curve of the lithium battery of novel electrolytes barrier film preparation as shown in Figure 1, discharge curve as shown in Figure 2, the relation of charging capacity and cycle life number of times as shown in Figure 3, the relation of discharge capacity and cycle life number of times is as shown in Figure 4.
Claims (2)
1. a polymer electrolyte diaphragm is characterized in that
(1) epoxy resin that contains 5-35wt.% in the electrolyte membrance is detested the sulphur plasticizer;
(2) contain the polymer-matrix of 50wt.% in the electrolyte membrance;
(3) contain the electric conducting lithium salt of 5-30wt.% in the electrolyte membrance;
(4) contain the nano ceramics of 10wt.% in the electrolyte membrance;
(5) network structure in this polymer film is to be cross-linked to form by the polymer-matrix described in the plasticizer described in above-mentioned (1) item and (2) item.
2. use the poly-lithium battery of the notebook computer of the described polymer electrolyte diaphragm preparation of claim 1, it is characterized in that: the polymer electrolyte diaphragm of this poly-lithium battery is to use the said polymer electrolyte diaphragm of claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101208282A CN1320687C (en) | 2003-12-30 | 2003-12-30 | Notebook computer ultra high specific energy lithium battery using new type eletrolyte diaphram |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101208282A CN1320687C (en) | 2003-12-30 | 2003-12-30 | Notebook computer ultra high specific energy lithium battery using new type eletrolyte diaphram |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1556557A true CN1556557A (en) | 2004-12-22 |
| CN1320687C CN1320687C (en) | 2007-06-06 |
Family
ID=34338314
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2003101208282A Expired - Fee Related CN1320687C (en) | 2003-12-30 | 2003-12-30 | Notebook computer ultra high specific energy lithium battery using new type eletrolyte diaphram |
Country Status (1)
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|---|---|
| CN (1) | CN1320687C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102738442A (en) * | 2012-06-14 | 2012-10-17 | 复旦大学 | High energy density charge-discharge lithium battery |
| CN102780032A (en) * | 2011-05-11 | 2012-11-14 | 精工爱普生株式会社 | Polymer solid electrolyte, method of production thereof, and lithium ion secondary battery |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5587253A (en) * | 1993-03-05 | 1996-12-24 | Bell Communications Research, Inc. | Low resistance rechargeable lithium-ion battery |
| CN1330104A (en) * | 2001-06-06 | 2002-01-09 | 东华大学 | Electrolyte film of modified polymer gel and its preparing process and application |
| CN1202170C (en) * | 2003-06-03 | 2005-05-18 | 清华大学 | Compounded polymer electrolyte material and its preparation method |
-
2003
- 2003-12-30 CN CNB2003101208282A patent/CN1320687C/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102780032A (en) * | 2011-05-11 | 2012-11-14 | 精工爱普生株式会社 | Polymer solid electrolyte, method of production thereof, and lithium ion secondary battery |
| CN102738442A (en) * | 2012-06-14 | 2012-10-17 | 复旦大学 | High energy density charge-discharge lithium battery |
| WO2013185629A1 (en) * | 2012-06-14 | 2013-12-19 | 复旦大学 | High energy density charge and discharge lithium battery |
| CN102738442B (en) * | 2012-06-14 | 2016-04-20 | 复旦大学 | A kind of high energy density charge-discharge lithium battery |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1320687C (en) | 2007-06-06 |
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| DD01 | Delivery of document by public notice |
Addressee: Li Qi Document name: Notice of publication of application for patent for invention |
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Addressee: Li Qi Document name: Notification to Pay the Fees |
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| CF01 | Termination of patent right due to non-payment of annual fee |