WO2004006378A1 - Electrolyte composition for lithium secondary battery having high overcharge-safety - Google Patents

Electrolyte composition for lithium secondary battery having high overcharge-safety Download PDF

Info

Publication number
WO2004006378A1
WO2004006378A1 PCT/KR2003/001332 KR0301332W WO2004006378A1 WO 2004006378 A1 WO2004006378 A1 WO 2004006378A1 KR 0301332 W KR0301332 W KR 0301332W WO 2004006378 A1 WO2004006378 A1 WO 2004006378A1
Authority
WO
WIPO (PCT)
Prior art keywords
composition
aromatic
nitrogen
containing compound
weight
Prior art date
Application number
PCT/KR2003/001332
Other languages
French (fr)
Inventor
Chi-Kyun Park
Zhiwei Zhang
Chul Chai
Jonha Lee
Kwonsun Roh
Original Assignee
Skc Limited
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Skc Limited filed Critical Skc Limited
Priority to AU2003281410A priority Critical patent/AU2003281410A1/en
Publication of WO2004006378A1 publication Critical patent/WO2004006378A1/en

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/056—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes
    • H01M10/0564—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes the electrolyte being constituted of organic materials only
    • H01M10/0566—Liquid materials
    • H01M10/0567—Liquid materials characterised by the additives
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/052—Li-accumulators
    • H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/056—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes
    • H01M10/0564—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes the electrolyte being constituted of organic materials only
    • H01M10/0566—Liquid materials
    • H01M10/0568—Liquid materials characterised by the solutes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/4235—Safety or regulating additives or arrangements in electrodes, separators or electrolyte
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2300/00—Electrolytes
    • H01M2300/0017—Non-aqueous electrolytes
    • H01M2300/0025—Organic electrolyte
    • H01M2300/0028—Organic electrolyte characterised by the solvent
    • H01M2300/0037—Mixture of solvents
    • H01M2300/004—Three solvents
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
    • H01M4/131—Electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
    • H01M4/133—Electrodes based on carbonaceous material, e.g. graphite-intercalation compounds or CFx
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/36—Selection of substances as active materials, active masses, active liquids
    • H01M4/48—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
    • H01M4/52—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron
    • H01M4/525—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
    • H01M50/409—Separators, membranes or diaphragms characterised by the material
    • H01M50/411—Organic material
    • H01M50/414—Synthetic resins, e.g. thermoplastics or thermosetting resins
    • H01M50/417—Polyolefins
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Inorganic Chemistry (AREA)
  • Secondary Cells (AREA)

Abstract

An electrolyte composition comprising a nitrogen-containing compound, biphenyl, an organic solvent and a lithium salt is advantageously used for the preparation of a lithium secondary battery having high overcharge-safety, cycling life and capacity properties.

Description

ELECTROLYTE COMPOSITION FOR LITHIUM SECONDARY BATTERY HAVING HIGH OVERCHARGE-SAFETY
Field of the Invention
The present invention relates to an electrolyte composition for lithium secondary batteries, which provides high overcharge-safety and enhanced performance at the same time.
Background of the Invention
Lithium secondary batteries are classified into two types depending on the kind of electrolyte used: a lithium ion battery which employs a liquid electrolyte; and a lithium ion polymer battery, a gel polymer electrolyte. Lithium secondary batteries are sensitive to certain types of abuse, particularly overcharge abuse of exceeding the normal operating voltage during recharge, and such overcharging causes heating of the battery, which can lead to fire.
Accordingly, many efforts have been made to develop a method to improve the safety of lithium batteries by incorporating various overcharge protection additives into the electrolyte. For example, U.S. Patent Nos. 5,879,834 and 6,033,797 disclose a method of adding certain aromatic compounds such as biphenyl, 3-chlorothiophene, furan, etc., to the electrolyte. The aromatic compound employed in this method is electrochemically polymerized at voltages greater than the maximum operating voltage thereby increasing the internal resistance of the battery sufficiently for overcharge protection.
Unfortunately, however, the overcharge protection additive may be polymerized by an acid catalyst such as HF and a Lewis acid existing in the electrolytic solution even at normal operating voltage, which results in adversely affecting the cycling life and self-discharge properties in the battery systems.
Summary of the Invention
Accordingly, it is an object of the present invention to provide an electrolyte composition having improved overcharge-safety, cycling life and self-discharge properties.
It is another object of the present invention to provide a lithium secondary battery comprising such an electrolyte.
In accordance with one aspect of the present invention, there is provided an electrolyte composition comprising a nitrogen-containing compound, biphenyl, an organic solvent and a lithium salt.
Brief Description of the Drawings
The above and other objects and features of the present invention will become apparent from the following description of the invention, when taken in conjunction with the accompanying drawings, which respectively show:
FIG. 1 : variations of capacity retention (%) of the lithium secondary batteries obtained in Examples 1 to 3 as a function of cycling number.
FIG. 2: variations of capacity retention (%) of the lithium secondary batteries obtained in Comparative Examples 1 to 3 as a function of cycling number. Detailed Description of the Invention
The inventive electrolyte composition in accordance with the present invention is characterized by incorporating a nitrogen-containing compound as an acid-scavenger together with biphenyl as an overcharge protection additive into the electrolytic solution comprising an organic solvent and a lithium salt.
The nitrogen-containing compound and biphenyl may be used in an amount ranging from 0.1 to 5% by weight and from 3 to 12% by weight, respectively, based on the total weight of the electrolytic solution.
Biphenyl used in the inventive composition is electrochemically polymerized at voltages above the maximum operating charging-voltage of the battery resulting in the formation of an insulating polymer on the cathode surfaces, and thus substantially raise the internal resistance of a battery to enhance overcharge-safety.
When the amount of biphenyl is less than 3% by weight, overcharge- safety cannot be ensured; and when more than 12% by weight, poor self- discharge property results.
Further, the nitrogen-containing compound used in the present invention removes HF or a Lewis acid typically existing in the electrolytic solution to inhibit acid-catalyzed polymerization of biphenyl at normal operating voltage, thereby making biphenyl accomplish the intended role as an overcharge protection additive during overcharge.
The nitrogen-containing compound which may be used in the present invention includes a tertiary amine, an aromatic nitrogen-containing heterocyclic compound and a polymeric form thereof, among which an aromatic or non-aromatic tertiary amine, a 6-membered aromatic heterocyclic compound and a 5-membered fused aromatic heterocyclic compound are preferred. Representative examples of the 6-membered aromatic heterocyclic compound may include pyridine, pyridazine, pyrimidine, pyrazine and triasine; and the 5-membered fused aromatic heterocyclic compound, triazole, thiazole and thiadiazole. In addition, preferred as the aromatic or non-aromatic tertiary amines are those which contain 1 or more nitrogen atoms and 5 or more carbon atoms.
When the amount of the nitrogen-containing compound is less than 0.1%) by weight, the acid such as HF in the electrolytic solution may not be removed effectively; and when more than 5% by weight, poor self-discharge property results.
Besides the nitrogen-containing compound and biphenyl, a halogen- or epoxy-containing compound may be further added to the said electrolyte composition in an amount ranging from 0.02 to 1.5% by weight based on the total weight of the electrolytic solution, if desired. The halogen- or epoxy- containing compound may react with a nitrogen-containing compound in the inventive electrolyte composition to undergo gelling at high temperature. Thus, the inventive electrolyte composition can be changed to a gel polymer electrolyte by adding a halogen- or epoxy-containing compound to the electrolytic solution and then heating it.
The halogen-containing compound which may be used in the present invention includes unsubstituted or substituted alkylene halide and aromatic halide, and polymers, copolymers and olygomers thereof. Among these halogen-containing compounds, preferred are the aromatic halide such as halomethylbenzene, halomethylnaphthalene, halomethylbiphenyl, bis(halomethyl)benzene, bis(halomethyl)naphthalene, bis(halomethyl)biphenyl, tris(halomethyl)benzene, tris(halomethyl)naphthalene, tris(halomethyl) biphenyl, tetrakis(halomethyl)benzene, tetrakis(halomethyl)naphthalene, tetrakis(halomethyl)biphenyl and halomethylstyrene; and the alkylene halide such as diiodoalkane, triiodoalkane and tetraiodoalkane, wherein halomethyl group means chloromethyl, bromomethyl or iodomethyl, and alkylene halide means haloalkane compound containing 2 or more carbon atoms. The most preferable examples of unsubstituted or substituted alkylene halide and aromatic halide may include bis(bromomethyl)benzene, α ,α '- dibromoxylene and diiodoalkane.
Further, the epoxy-containing compound which may be used in the present invention includes 3,4-epoxycyclohexylmethyl-3',4'- epoxycyclohexane carboxylate, glycidyl dodecafluoroheptylether, polypropyleneglycol diglycidylether, butadiene diepoxide, butanediol diglycidylether, cyclohexene oxide, cyclopentene oxide, diepoxy cyclooctane, ethyleneglycol diglycidylether and 1 ,2-epoxyhexane. Exemplary lithium salts that may be used in the present invention are
LiPF6, LiAsF6, LiC104, LiN(CF3S02)2, LiBF4, LiCF3S03, LiSbF6 and a mixture thereof. The lithium salt may be present at a concentration ranging from 0.5 to 2 M in an organic solvent. When the concentration of the salt is less than 0.5 M, the capacity becomes poor; and when more than 2 M, poor cycling life property results.
Representative examples of the organic solvent used in the present invention include propylene carbonate, ethylene carbonate, diethyl carbonate, dimethyl carbonate, ethylmethyl carbonate, dipropyl carbonate, dimethoxyethane, diethoxyethane, vinylene carbonate, gamma-butyrolactone, ethylene sulfite and propylene sulfite.
The inventive electrolytic solution may be prepared by simply mixing the nitrogen-containing compound, biphenyl, the lithium salt and the organic solvent. Also, as mentioned above, in order to form a gel polymer electrolyte, a halogen- or epoxy-containing compound may be further added to said electrolyte composition.
In accordance with another aspect of the present invention, there is provided a lithium secondary battery comprising a cathode, an anode, a separator interposed between the cathode and the anode, and said electrolyte composition. The present invention may be applied to any type of lithium batteries.
Typically, a cathode composition, i.e., a mixture of a cathode active material, a conducting agent, a binder and a solvent, may be coated directly on an aluminum current collector, or laminated in the form of a film on an aluminum current collector to form a cathode sheet.
The cathode active material may be lithium-containing metal oxides such as LiCoO* 2, LiMn20 and LiNi02. The conducting agent may be carbon black; the binder may be vinylidene fluoride/hexafluoropropylene copolymers, polyvinylidene fluoride (PVDF), polyacrilonitrile, polymethylmetacrilate or polytetrafluoroethylene; and the solvent may be N- methylpyrrolidone (NMP) or acetone. The conducting agent, the binder and the solvent may be used in an amount ranging from 1 to 10 parts by weight, from 2 to 10 parts by weight and from 30 to 100 parts by weight based on 100 parts by weight of the cathode active material, respectively.
Also, an anode composition, i.e., a mixture of an anode active material, a conducting agent, a binder and a solvent, may be coated directly on a copper current collector, or laminated in the form of a film on a copper current collector to form an anode sheet.
Representative examples of the anode active material may include carbon-based materials and graphite. The conducting agent, the binder and the solvent, which may be the same as those used in the cathode composition, may be used in an amount of below 10 parts by weight, ranging from 2 to 10 parts by weight and from 30 to 100 parts by weight based on 100 parts by weight of the anode active material, respectively. If necessary, a plasticizer may be further added to said cathode and anode compositions to form porous electrode sheets.
Further, a separator which is interposed between the cathode and the anode sheets may be of a microporous sheet made from, for example, a polymeric material such as polyethylene and polypropylene. An appropriate separator sheet is located between the cathode and the anode sheets to form an electrode stack. The electrode stack may be wound or stacked, placed into a cylindrical or angular battery case and then sealed, followed by injecting the inventive electrolyte composition thereinto to prepare a lithium secondary battery. In addition, in case of preparing a lithium ion polymer battery, the process for making a battery further comprises the step of gelating the electrolytic solution comprising a halogen- or epoxy-containing compound by heating at 30 to 130 °C .
The inventive battery prepared in accordance with the present invention is characterized by having high safety and performance characteristics at the same time.
The following Example and Comparative Examples are given for the purpose of illustration only, and are not intended to limit the scope of the invention.
Examples 1 to 4
1000 g of LiCo02 (Seimi), 40 g of acetylene black (Chevron), 50 g of polyvinylidene fluoride (PVDF, Solvay) and 1100 g of N-methylpyrrolidone (NMP, Aldrich) were mixed with a plenary mixer to form a cathode composition. The cathode composition was coated on an aluminum foil, dried and pressed to prepare a 180 μm thick cathode sheet. 1000 g of mesophase carbon micro bead (MCMB 25-28, Osaka gas),
15 g of acetylene black (Chevron), 100 g of polyvinylidene fluoride (Solvay) and 800 g of N-methylpyrrolidone (NMP, Aldrich) were mixed with a plenary mixer to form an anode composition. The anode composition was coated on a copper foil, dried and pressed to prepare a 200 μm thick anode sheet.
A polypropylene separator sheet (25 μm, 2300 microporous film; Cellgard) was disposed between the cathode and anode sheets to form an electrode stack. The electrode stack was wound in a jellyroll manner, placed into an aluminum can and then sealed with a bar sealer. Various amounts of poly(vinylpyridine-co-styrene) (PVPS, Aldrich),
• 3,4-epoxycyclohexylmethyl-3',4'-epoxycyclohexane carboxylate (ECMEC,
Aldrich) and biphenyl(BP, Aldrich) were dissolved into a 1 : 1 : 1 weight mixture of ethylene carbonate, diethyl carbonate and dimethyl carbonate
(EC-DEC-DMC, Ferro), and then 15.2 g LiPF6 was added thereto to form 100 g each of various electrolytic solutions as shown in Table 1. Each of the electrolytic solutions was injected into the sealed can through an inlet under an argon gas atmosphere, and allowed to gel by heating at 65 °C for 36 hours, to obtain four lithium secondary batteries (Examples 1 to 4, respectively).
Examples 5 to 8 The procedure of Example 1 was repeated except that pyrimidine, triazine, triethylamine and polyvinyl pyridine, respectively, were used instead of PVPS as a nitrogen-containing compound as shown in Table 1 , and the gelation process was omitted, to obtain four lithium secondary batteries (Examples 5 to 8, respectively).
Comparative Examples 1 to 3
The procedure of Example 5 was repeated except that the nitrogen- containing compound was not employed, and biphenyl was used in the amount as shown in Table 1, to obtain three comparative lithium secondary batteries.
Battery Performance Characteristics
The capacity (on 225 mAh discharge), capacity retention (%, at 2C discharge rate) and cycling property (at IC discharge rate) of each of the lithium secondary batteries obtained in Examples and Comparative Examples were measured with Maccor's testing system, and overcharge- safety (with 12 volts, at IC & 2C discharge rate), with Power Supply (Hewlett Packard). The results are shown in Table 1, and FIGs. 1 (Examples 1 to 3) and 2 (Comparative Examples 1 to 3), respectively. Table 1
Figure imgf000012_0001
As shown in Table 1, and FIGs. 1 and 2, the batteries obtained in Examples 1 to 8 exhibit much improved properties in terms of the capacity, capacity retention, cycling life and overcharge-safety, as compared with the batteries obtained in Comparative Examples 1 to 3. Further, when the amount of the overcharge protection additive, biphenyl, is less than 3 % by weight based on the total weight of the electrolytic solution (Comparative Examples 1 and 2), fire was observed during overcharge. Additionally, the battery obtained in Comparative Example 3 has satisfactory overcharge- safety but exhibited some observable loss in cycling capacity and capacity retention. The above results suggest that the inventive electrolyte composition comprising biphenyl as an overcharge protection additive together with a nitrogen-containing compound can be advantageously used in preparing an improved lithium secondary battery having high safety and performance characteristics.
While the embodiments of the subject invention have been described and illustrated, it is obvious that various changes and modifications can be made therein without departing from the spirit of the present invention which should be limited only by the scope of the appended claims.

Claims

What is claimed is:
1. An electrolyte composition comprising a nitrogen-containing compound, biphenyl, an organic solvent and a lithium salt.
2. The composition of claim 1, wherein the nitrogen-containing compound and biphenyl are used in an amount ranging from 0.1 to 5% by weight and 3 to 12%) by weight, respectively, based on the total weight of the composition.
3. The composition of claim 1, wherein the nitrogen-containing compound is selected from the group consisting of a tertiary amine, an aromatic nitrogen-containing heterocyclic compound and a polymeric form thereof.
4. The composition of claim 3, wherein the tertiary amine is an aromatic or non-aromatic tertiary amine and the aromatic nitrogen-containing heterocyclic compound is selected from the group consisting of a 6- membered aromatic heterocyclic compound and a 5-membered fused aromatic heterocyclic compound.
5. The composition of claim 4, wherein the tertiary amine is an aromatic or non-aromatic tertiary amine containing 1 or more nitrogen atoms and 5 or more carbon atoms and the aromatic nitrogen-containing heterocyclic compound is selected from the group consisting of pyridine, pyridazine, pyrimidine, pyrazine, triasine, triazole, thiazole and thiadiazole.
6. The composition of claim 1, which further comprises a halogen- or epoxy-containing compound.
7. The composition of claim 6, wherein the halogen- or epoxy-containing compound is used in an amount ranging from 0.02 to 1.5% by weight based on the total weight of the composition.
8. The composition of claim 1, wherein the lithium salt is selected from the group consisting of LiPF6, LiAsF6, LiC104, LiN(CF3S02)2, LiBF4, LiCF3S03 and LiSbF6.
9. The composition of claim 8, wherein the concentration of the lithium salt in the organic solvent is in the range from 0.5 to 2 M.
10. A lithium secondary battery comprising the electrolyte composition of any one of claims 1 to 9.
PCT/KR2003/001332 2002-07-09 2003-07-07 Electrolyte composition for lithium secondary battery having high overcharge-safety WO2004006378A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2003281410A AU2003281410A1 (en) 2002-07-09 2003-07-07 Electrolyte composition for lithium secondary battery having high overcharge-safety

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020020039570A KR100560209B1 (en) 2002-07-09 2002-07-09 Electrolyte composition having high safety when overcharged
KR10-2002-0039570 2002-07-09

Publications (1)

Publication Number Publication Date
WO2004006378A1 true WO2004006378A1 (en) 2004-01-15

Family

ID=30113090

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2003/001332 WO2004006378A1 (en) 2002-07-09 2003-07-07 Electrolyte composition for lithium secondary battery having high overcharge-safety

Country Status (3)

Country Link
KR (1) KR100560209B1 (en)
AU (1) AU2003281410A1 (en)
WO (1) WO2004006378A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2161776A1 (en) * 2008-08-13 2010-03-10 Greatbatch Ltd. Polyvinylpyridine additives for nonaqueous electrolytes
JP2013012350A (en) * 2011-06-28 2013-01-17 Sharp Corp Nonaqueous secondary battery, and flame retarder for the same
JP2022531418A (en) * 2019-06-18 2022-07-06 エルジー エナジー ソリューション リミテッド Electrolytes for lithium secondary batteries and lithium secondary batteries containing them

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5021129A (en) * 1989-09-25 1991-06-04 International Business Machines Corporation Multilayer structures of different electroactive materials and methods of fabrication thereof
US5045159A (en) * 1989-07-18 1991-09-03 International Business Machines Corporation Derivatives of compounds containing a carbonyl group conjugated to an aromatic moiety and electrophilic methods of fabrication thereof
US5104944A (en) * 1989-07-18 1992-04-14 International Business Machines Corporation Process for nucleophilic derivatization of materials having an imide group conjugated to an aromatic moiety
US5203955A (en) * 1988-12-23 1993-04-20 International Business Machines Corporation Method for etching an organic polymeric material
US5242713A (en) * 1988-12-23 1993-09-07 International Business Machines Corporation Method for conditioning an organic polymeric material
US5281327A (en) * 1992-03-10 1994-01-25 Sumitomo Chemical Company, Limited Method of producing conductive polymer composites
US5443865A (en) * 1990-12-11 1995-08-22 International Business Machines Corporation Method for conditioning a substrate for subsequent electroless metal deposition
EP1225649A2 (en) * 2001-01-17 2002-07-24 SKC Co., Ltd. High ionic conductivity gel polymer electrolyte for rechargeable polymer batteries

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5203955A (en) * 1988-12-23 1993-04-20 International Business Machines Corporation Method for etching an organic polymeric material
US5242713A (en) * 1988-12-23 1993-09-07 International Business Machines Corporation Method for conditioning an organic polymeric material
US5045159A (en) * 1989-07-18 1991-09-03 International Business Machines Corporation Derivatives of compounds containing a carbonyl group conjugated to an aromatic moiety and electrophilic methods of fabrication thereof
US5104944A (en) * 1989-07-18 1992-04-14 International Business Machines Corporation Process for nucleophilic derivatization of materials having an imide group conjugated to an aromatic moiety
US5021129A (en) * 1989-09-25 1991-06-04 International Business Machines Corporation Multilayer structures of different electroactive materials and methods of fabrication thereof
US5443865A (en) * 1990-12-11 1995-08-22 International Business Machines Corporation Method for conditioning a substrate for subsequent electroless metal deposition
US5281327A (en) * 1992-03-10 1994-01-25 Sumitomo Chemical Company, Limited Method of producing conductive polymer composites
EP1225649A2 (en) * 2001-01-17 2002-07-24 SKC Co., Ltd. High ionic conductivity gel polymer electrolyte for rechargeable polymer batteries

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2161776A1 (en) * 2008-08-13 2010-03-10 Greatbatch Ltd. Polyvinylpyridine additives for nonaqueous electrolytes
US8940443B2 (en) 2008-08-13 2015-01-27 Greatbatch Ltd. Polyvinylpyridine additives for nonaqueous electrolytes activating lithium rechargeable electrochemical cells
US9825333B2 (en) 2008-08-13 2017-11-21 Greatbatch Ltd. Polyvinylpyridine additives for nonaqueous electrolytes activating lithium rechargeable electrochemical cells
JP2013012350A (en) * 2011-06-28 2013-01-17 Sharp Corp Nonaqueous secondary battery, and flame retarder for the same
JP2022531418A (en) * 2019-06-18 2022-07-06 エルジー エナジー ソリューション リミテッド Electrolytes for lithium secondary batteries and lithium secondary batteries containing them
JP7301447B2 (en) 2019-06-18 2023-07-03 エルジー エナジー ソリューション リミテッド Electrolyte for lithium secondary battery and lithium secondary battery containing the same

Also Published As

Publication number Publication date
KR100560209B1 (en) 2006-03-10
AU2003281410A1 (en) 2004-01-23
KR20040006057A (en) 2004-01-24

Similar Documents

Publication Publication Date Title
JP4001580B2 (en) Organic electrolyte and lithium battery using the same
US6841303B2 (en) High ionic conductivity gel polymer electrolyte for rechargeable polymer batteries
US7998623B2 (en) Electrolyte for lithium ion secondary battery and lithium ion secondary battery including the same
EP2238643B1 (en) Pouch-type lithium secondary battery
KR101432915B1 (en) Modified lithium metal electrode, method for preparing the same and lithium metal battery comprising the same
US20030059681A1 (en) Polymeric sol electrolyte and lithium battery using the same
US20030148191A1 (en) Non-aqueous electrolyte secondary battery
KR100558847B1 (en) Electrolyte composition, lithiumbattery using the same and preparing method therefor
JP4149241B2 (en) Polymer electrolyte forming composition for improving overcharge safety and lithium battery using the same
KR100573109B1 (en) Organic electrolytic solution and lithium battery employing the same
KR100528933B1 (en) Organic electrolytic solution and lithium battery employing the same
US6403266B1 (en) Polymer electrolyte composition, method for preparing the same and lithium secondary battery employing the same
US20030003367A1 (en) Lithium battery and method for the preparation thereof
KR100373731B1 (en) Lithium secondary battery and preparing method thereof
US7220519B2 (en) Electrolyte composition, lithium battery using the same, and method of manufacturing the lithium battery
KR101066447B1 (en) Electrolyte and battery using the same
US6794088B2 (en) Method for preparing lithium ion polymer battery
KR100470288B1 (en) Lithium polymer cell
WO2004040687A1 (en) Electrolyte composition for lithium secondary battery having high overcharge-safety
WO2004006378A1 (en) Electrolyte composition for lithium secondary battery having high overcharge-safety
WO2004006379A1 (en) Electrolyte composition for lithium secondary battery having low swelling level at high temperature
US20020187404A1 (en) Liquid electrolyte composition and lithium battery comprising same
KR100529066B1 (en) A lithium secondary battery
KR101950706B1 (en) Electrolyte solution for lithium secondary battery and lithium secondary battery comprising the same
KR20050000830A (en) Electrolyte composition having high safety when overcharged

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SY TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LU MC NL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
122 Ep: pct application non-entry in european phase
NENP Non-entry into the national phase

Ref country code: JP

WWW Wipo information: withdrawn in national office

Country of ref document: JP