WO2009125967A2 - 리튬 이차전지용 비수전해액 및 이를 구비한 리튬 이차전지 - Google Patents
리튬 이차전지용 비수전해액 및 이를 구비한 리튬 이차전지 Download PDFInfo
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- WO2009125967A2 WO2009125967A2 PCT/KR2009/001792 KR2009001792W WO2009125967A2 WO 2009125967 A2 WO2009125967 A2 WO 2009125967A2 KR 2009001792 W KR2009001792 W KR 2009001792W WO 2009125967 A2 WO2009125967 A2 WO 2009125967A2
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- Prior art keywords
- aqueous electrolyte
- lithium secondary
- carbonate
- lithium
- sulfate
- Prior art date
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Classifications
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- 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
-
- 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
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- 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
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- 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
- H01M10/0569—Liquid materials characterised by the solvents
-
- 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
-
- 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
Definitions
- the present invention relates to a non-aqueous electrolyte for a lithium secondary battery and a secondary battery including the same, and in particular, a non-aqueous electrolyte for a lithium secondary battery capable of improving both high temperature performance and low temperature output characteristics by containing a specific lithium salt and an additive, and using the same. It relates to a lithium secondary battery.
- Lithium secondary batteries are the batteries that can best meet these demands, and research on these is being actively conducted.
- lithium secondary batteries developed in the early 1990s have a suitable amount of lithium salt dissolved in a cathode and a non-aqueous solvent made of a negative electrode such as a carbon material capable of occluding and releasing lithium ions, a lithium-containing oxide, and the like. It consists of nonaqueous electrolyte.
- the average discharge voltage of the lithium secondary battery is about 3.6 ⁇ 3.7V, one of the advantages is that the discharge voltage is higher than other alkaline batteries, nickel-cadmium batteries and the like.
- an electrochemically stable electrolyte composition is required in the charge and discharge voltage range of 0 to 4.5V.
- a mixed solvent in which cyclic carbonate compounds such as ethylene carbonate and propylene carbonate and linear carbonate compounds such as dimethyl carbonate, ethylmethyl carbonate and diethyl carbonate are appropriately mixed is used as the nonaqueous solvent of the nonaqueous electrolyte.
- LiPF 6 , LiBF 4 , LiClO 4 , LiN (CF 3 SO 2 ) 2, etc. are commonly used as lithium salts as electrolytes, which act as a source of lithium ions in the battery to enable operation of the lithium battery. .
- Such lithium secondary batteries are required to have various characteristics according to the field of use.
- high power batteries used as auxiliary power sources for hybrid electric vehicles must have high power density, good cycle and high temperature storage characteristics, and high low temperature output to start the car at low temperatures.
- vinyl carbonate (VC) is used to improve the high temperature cycle performance of the lithium secondary battery.
- vinyl carbonate degrades the low temperature output performance of the battery.
- ethylene sulfate is known to contribute to improving the low temperature characteristics of lithium ion batteries.
- an object of the present invention is to provide a nonaqueous electrolyte and a lithium secondary battery having the same, which can improve the low temperature output characteristics while maintaining high overall high temperature performance.
- a nonaqueous electrolyte solution for a lithium secondary battery including a lithium salt and a nonaqueous solvent includes LiN (CF 3 SO 2 ) 2 as a lithium salt, and the nonaqueous electrolyte is a sulfate represented by the following Chemical Formula 1 It further comprises a system compound and vinyl carbonate.
- N is an integer from 2 to 5.
- the content of LiN (CF 3 SO 2 ) 2 is preferably 0.1 to 0.5 mol based on 1 mol of the lithium salt.
- the content of the sulfate-based compound and vinyl carbonate added to the non-aqueous electrolyte of the present invention is preferably 0.5 to 10% by weight based on the total weight of the non-aqueous electrolyte, and the content ratio of the sulfate-based compound and vinyl carbonate is particularly 1: 1 to 1: 4, and the total content of the sulfate-based compound and vinyl carbonate is preferably 0.5 to 10% by weight based on the total weight of the nonaqueous electrolyte.
- the non-aqueous electrolyte for lithium secondary batteries described above is usefully applied to conventional lithium secondary batteries having a negative electrode and a positive electrode.
- a nonaqueous electrolyte for a lithium secondary battery including a lithium salt and a nonaqueous solvent includes LiN (CF 3 SO 2 ) 2 as a lithium salt, and the nonaqueous electrolyte is a sulfate-based compound represented by the following Chemical Formula 1 and vinyl carbonate at the same time. Include.
- N is an integer from 2 to 5.
- a nonaqueous electrolyte comprising a sulfate-based compound of Formula 1 and vinyl carbonate, represented by ethylene sulfate
- a sulfate-based compound having a relatively high reduction potential occurs before the vinyl carbonate.
- the SEI film by a sulfate type compound is formed first, and then, the SEI film made from vinyl carbonate is formed. Since the film produced by the sulfate-based compound has the advantage of low resistance, the low temperature output characteristics of the battery are improved, and the film formed by vinyl carbonate (VC) improves the high temperature characteristics of the battery.
- VC vinyl carbonate
- the content of the sulfate-based compound and vinyl carbonate is preferably 0.5 to 10% by weight, respectively, based on the total weight of the nonaqueous electrolyte. Particularly, in order to maximize low-temperature output while maximizing high-temperature properties, the content ratio is 1: 1 to 1: 4, and the total content of the sulfate-based compound and vinyl carbonate is preferably 0.5 to 10% by weight based on the total weight of the nonaqueous electrolyte.
- the present invention uses LiN (CF 3 SO 2 ) 2 , that is, LiTFSI [lithium bis (trifluoromethylsulfonyl) imide] as the lithium salt.
- LiTFSI lithium bis (trifluoromethylsulfonyl) imide
- the content of LiN (CF 3 SO 2 ) 2 is preferably 0.1 to 0.5 moles based on 1 mole of the total lithium salt to maximize the performance of the battery.
- a lithium salt used for the nonaqueous electrolyte of the present invention in addition to the above-described LiTFSI, LiPF 6, LiBF 4, LiClO 4, etc. can be used by mixing a lithium salt of known and the lithium salt of LiPF 6 and LiBF 4 in a dual-1 moles It is preferable to use together 0.5-0.9 mol on the basis of.
- the lithium salt is usually incorporated in the above non-aqueous solvent in an amount such that it is at least 0.3 M, preferably at least 0.5 M, more preferably at least 0.7 M, even more preferably at least 0.8 M. At the same time, the lithium salt is preferably at most 2.5 M, more preferably at most 2.0 M, even more preferably at most 1.6 M, even more preferably at most 1.2 M.
- non-aqueous solvent used in the non-aqueous electrolyte of the present invention linear carbonates such as cyclic carbonates such as propylene carbonate and ethylene carbonate, diethyl carbonate, dimethyl carbonate, ethyl methyl carbonate, dipropyl carbonate, dimethyl sulfoxide and acetonitrile
- cyclic carbonates such as propylene carbonate and ethylene carbonate
- diethyl carbonate dimethyl carbonate
- ethyl methyl carbonate dipropyl carbonate
- dimethyl sulfoxide dimethyl sulfoxide
- Known non-aqueous solvents such as dimethoxyethane, diethoxyethane, sulfolane, gamma-butyrolactone, tetrahydrofuran, ethyl propionate, and propyl propionate may be used alone or in combination of two or more thereof. It may be, but is not limited thereto.
- the nonaqueous solvent may be a combination of cyclic carbonate and linear carbonate, a combination of cyclic carbonate and lactone, a combination of cyclic carbonate and lactone and linear ester, a combination of cyclic carbonate and linear carbonate and lactone, and a cyclic carbonate and linear It is preferable to use a combination of two or more solvents of various types, such as a combination of a carbonate and an ether, a combination of a cyclic carbonate and a linear carbonate, and a linear ester. Among these, a combination or a ring of a cyclic carbonate and a linear carbonate Combinations of type carbonates, lactones and linear esters are preferred.
- the ratio of the cyclic carbonate and the linear carbonate is preferably 1: 9 to 7: 3 by volume ratio. If only 100% of the cyclic carbonate is used, the electrolyte may have a high viscosity and may not function properly.
- the nonaqueous electrolyte of the present invention as described above is used in a lithium secondary battery. That is, the non-aqueous electrolyte is impregnated with the electrode assembly having a separator interposed between the anode and the cathode.
- the positive electrode may be formed of a conductive material such as acetylene black, carbon black, or the like and poly (tetrafluoroethylene) (PTFE), poly (vinylidene fluoride) (PVDF), a copolymer of styrene and butadiene (SBR), and acrylo
- a positive electrode composition is prepared by kneading with a binder such as a copolymer of nitrile and butadiene (NBR) or carboxy methyl cellulose (CMC), and then rolling the positive electrode current collector, such as aluminum foil or stainless steel lath plate, and rolling it at about 50 ° C. It can be produced by heat treatment under vacuum at a temperature of from 250 ° C to about 2 hours.
- the negative electrode active material used for the negative electrode of the present invention includes, for example, natural graphite, artificial graphite, expanded graphite, carbon fiber, non-graphitizable carbon, carbon black, carbon nanotubes, fullerenes, activated carbon and lithium graphite materials; Alloys such as Al, Si, Sn, Ag, Bi, Mg, Zn, In, Ge, Pb, Pd, Pt, Ti, compound metals containing these elements, and composites of the compounds with carbon and graphite materials Although containing nitride etc.
- the conductive material, and other additives included in the negative electrode may be included, specific examples and contents thereof, etc. are sufficient to be added to the usual level.
- the binder is a component that assists the bonding of the active material and the conductive material to the current collector, and is generally added in an amount of 1 to 50 wt% based on the total weight of the electrode mixture.
- binders include polyvinylidene fluoride (PVDF), polyvinyl alcohol, carboxymethyl cellulose (CMC), starch, hydroxypropyl cellulose, regenerated cellulose, polyvinylpyrrolidone, tetrafluoro Low ethylene, polyethylene, polypropylene, ethylene-propylene-diene polymer (EPDM), sulfonated-EPDM, styrene-butadiene rubber, fluorine rubber, various copolymers thereof, and the like.
- PVDF polyvinylidene fluoride
- CMC carboxymethyl cellulose
- EPDM ethylene-propylene-diene polymer
- sulfonated-EPDM styrene-butadiene rubber
- fluorine rubber various
- the conductive material is a component for further improving the conductivity of the electrode active material, and may be added in an amount of 1 to 20 wt% based on the total weight of the electrode mixture.
- a conductive material is not particularly limited as long as it has conductivity without causing chemical change in the battery.
- graphite carbon black such as natural graphite or artificial graphite, acetylene black, Ketjen black, channel black, furnace black
- Conductive metal oxide polyphenylene derivatives such as conductive powder such as carbon black carbon fiber and metal fiber such as lamp black and summer black, metal fiber such as metal fluoride, aluminum and nickel powder, zinc oxide, and conductive whiskey titanium oxide such as potassium titanate Conductive materials, such as these, can be used.
- the filler is selectively used as a component for inhibiting the expansion of the negative electrode, and is not particularly limited as long as it is a fibrous material without causing chemical change in the battery.
- a fibrous material such as polyethylene or polypropylene may be used.
- fibrous materials such as carbon fibers.
- the separator is interposed between the anode and the cathode, and an insulating thin film having high ion permeability and mechanical strength is used.
- the pore diameter of the separator is generally 0.01 to 10 ⁇ m ⁇ m, thickness is generally 5 ⁇ 300 ⁇ m.
- a separator for example, a sheet made of an olefin polymer glass fiber or polyethylene such as polypropylene having chemical resistance and hydrophobicity, a nonwoven kraft paper or the like is used.
- Typical examples currently on the market include Celgard series (Celgard TM 2400, 2300 (manufactured by Hoechest Celanese Corp.), polypropylene separator (manufactured by Ube Industries Ltd. or Pall RAI), and polyethylene series (Tonen or Entek).
- the lithium secondary battery may be a coin-type battery having a positive electrode, a negative electrode and a single layer or a double layer separator, or a cylindrical battery or a square cell having a positive electrode, a negative electrode, and a roll-shaped separator.
- a lithium secondary battery using the nonaqueous electrolyte of the present invention is prepared by inserting an electrode group including a positive electrode and a negative electrode produced by a conventional method into a battery case, and then pouring the nonaqueous electrolyte of the present invention into the case.
- the battery case may be in the form of a metal can or a pouch in a metal laminate.
- ESa ethylene sulfate
- VC vinyl carbonate
- a non-aqueous electrolyte was prepared in the same manner as in Example 1 except that the added lithium salt was changed to 0.8 M of LiPF 6 and 0.2 M of LiTFSI.
- a non-aqueous electrolyte was prepared in the same manner as in Example 1 except that the added lithium salt was changed to 0.5 M of LiPF 6 and 0.5 M of LiTFSI.
- a laminate-type lithium ion battery was manufactured by laminating a positive electrode containing lithium manganese oxide and a negative electrode containing carbon together with a separator (polypropylene). After the electrode group was inserted into the battery case, lithium secondary batteries were prepared by pouring the nonaqueous electrolyte prepared in Examples 1 to 3 and Comparative Examples 1 to 4 into the case.
- Discharge power was measured by applying a constant power of 100, 110, 120, 130, 140, and 150W for 2 seconds at -30 ° C to the manufactured batteries, and the results are shown in Table 2 below.
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Abstract
Description
리튬염 | 첨가제 | |||
LiPF6 | LiTFSI | VC | ESa | |
실시예 1 | 0.9M | 0.1M | 2% | 1% |
실시예 2 | 0.8M | 0.2M | 2% | 1% |
실시예 3 | 0.5M | 0.5M | 2% | 1% |
비교예 1 | 1.0M | - | 2% | - |
비교예 2 | 1.0M | - | - | 1% |
비교예 3 | 1.0M | - | 2% | 1% |
비교예 4 | 0.8M | 0.2M | - | 1% |
전지 | 사용된비수전해액 | 저온출력특성(W/Ah) | 60℃, 4주 저장 | 45℃, 1C/1C, 300cycle | ||
용량유지율(%) | 출력유지율(%) | 용량유지율(%) | 출력유지율(%) | |||
실시예 1 | 26 | 92 | 82 | 95 | 85 | |
실시예 2 | 27 | 92 | 83 | 96 | 87 | |
실시예 3 | 26 | 93 | 84 | 96 | 87 | |
비교예 1 | 20 | 87 | 76 | 91 | 76 | |
비교예 2 | 35 | 77 | 62 | 75 | 57 | |
비교예 3 | 25 | 89 | 79 | 94 | 83 | |
비교예 4 | 34 | 86 | 76 | 88 | 75 |
Claims (8)
- 제1항에 있어서,상기 LiN(CF3SO2)2의 함량은 상기 리튬염 1몰을 기준으로 0.1 내지 0.5몰인 것을 특징으로 하는 리튬 이차전지용 비수전해액.
- 제2항에 있어서,상기 리튬염은 리튬염 1몰을 기준으로 0.5 내지0.9몰의 LiPF6를 포함하는 것을 특징으로 하는 리튬 이차전지용 비수전해액.
- 제1항에 있어서,상기 설페이트계 화합물 및 비닐 카보네이트의 함량은 상기 비수전해액 총 중량을 기준으로 각각 0.5 내지 10중량%인 것을 특징으로 하는 비수전해액.
- 제4항에 있어서,상기 설페이트계 화합물과 비닐 카보네이트의 함량비는 1:1 내지 1:4이고, 상기 설페이트계 화합물과 비닐 카보네이트의 총 함량은 비수전해액 총 중량을 기준으로 0.5 내지 10중량%인 것을 특징으로 하는 비수전해액.
- 제1항에 있어서,상기 설페이트계 화합물은 에틸렌 설페이트인 것을 특징으로 하는 비수전해액.
- 제1항에 있어서,상기 비수용매는 프로필렌 카보네이트, 에틸렌 카보네이트 및 이들의 혼합물로 이루어진 군으로부터 선택된 고리형 카보네이트, 디에틸 카보네이트, 디메틸 카보네이트, 메틸에틸 카보네이트, 디프로필 카보네이트 및 이들의 혼합물로 이루어진 군으로부터 선택된 선형 카보네이트, 디메틸설퍼옥사이드, 아세토니트릴, 디메톡시에탄, 디에톡시에탄, 설포란, 감마-부티로락톤, 테트라하이드로 퓨란, 에틸 프로피오네이트 및 프로필 프로피오네이트로 이루어진 군에서 선택되는 어느 하나 또는 이들 중 2종 이상의 혼합물인 것을 특징으로 하는 리튬 이차전지용 비수전해액.
- 음극, 양극 및 비수전해액을 구비하는 리튬 이차전지에 있어서,상기 비수전해액은 제1항 내지 제7항 중 어느 한 항의 리튬 이차전지용 비수전해액인 것을 특징으로 하는 리튬 이차전지.
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JP2011503903A JP2011517042A (ja) | 2008-04-08 | 2009-04-07 | リチウム二次電池用非水電解液及びそれを備えたリチウム二次電池 |
CN2009801124920A CN101990722A (zh) | 2008-04-08 | 2009-04-07 | 锂二次电池用非水电解质溶液及包含该非水电解质溶液的锂二次电池 |
US12/680,297 US8822085B2 (en) | 2008-04-08 | 2010-03-26 | Non-aqueous electrolyte solution for lithium secondary battery and lithium secondary battery comprising the same |
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US12/680,297 Continuation US8822085B2 (en) | 2008-04-08 | 2010-03-26 | Non-aqueous electrolyte solution for lithium secondary battery and lithium secondary battery comprising the same |
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WO2013188594A2 (en) * | 2012-06-12 | 2013-12-19 | A123 Systems, LLC | Non-aqueous electrolytic rechargeable batteries for extended temperature range operation |
KR101586139B1 (ko) | 2013-02-20 | 2016-01-15 | 주식회사 엘지화학 | 비수성 전해액 및 이를 포함하는 리튬 이차 전지 |
WO2014129823A1 (ko) | 2013-02-20 | 2014-08-28 | 주식회사 엘지화학 | 리튬 이차 전지용 전해액 첨가제, 상기 전해액 첨가제를 포함하는 비수성 전해액 및 리튬 이차 전지 |
KR101620214B1 (ko) * | 2013-10-31 | 2016-05-12 | 주식회사 엘지화학 | 리튬 이차 전지용 전해액 첨가제, 상기 전해액 첨가제를 포함하는 비수성 전해액 및 리튬 이차 전지 |
DE102015014294A1 (de) * | 2014-11-07 | 2016-05-12 | A123 Systems, LLC | Elektrolytzusammensetzung für reduzierte Gasbildung bei weitreichenden Temperaturbereichszyklen |
WO2016095116A1 (en) * | 2014-12-17 | 2016-06-23 | Basf Corporation | Electrolyte compositions for rechargeable lithium ion batteries |
CN104766995B (zh) * | 2015-03-31 | 2017-03-15 | 宁德时代新能源科技股份有限公司 | 一种电解液添加剂及其在锂离子电池中的应用 |
CN104916867B (zh) * | 2015-06-10 | 2017-07-04 | 宁德时代新能源科技股份有限公司 | 电解液以及包含该电解液的锂离子电池 |
KR102397859B1 (ko) | 2017-04-25 | 2022-05-12 | 삼성에스디아이 주식회사 | 리튬 이차 전지용 전해질 및 이를 포함하는 리튬 이차 전지 |
JP7115724B2 (ja) * | 2018-03-27 | 2022-08-09 | 三井化学株式会社 | 電池用非水電解液及びリチウム二次電池 |
JP7096724B2 (ja) * | 2018-07-18 | 2022-07-06 | 旭化成株式会社 | 非水系リチウム型蓄電素子 |
KR20210039816A (ko) * | 2019-10-02 | 2021-04-12 | 주식회사 엘지화학 | 비수 전해액 및 이를 포함하는 리튬 이차 전지 |
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KR20040006429A (ko) * | 2002-07-12 | 2004-01-24 | 삼성에스디아이 주식회사 | 리튬-설퍼 전지용 전해액 및 이를 포함하는 리튬-설퍼 전지 |
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JP3553697B2 (ja) * | 1995-07-24 | 2004-08-11 | 株式会社リコー | 二次電池 |
JP4519956B2 (ja) * | 1997-09-04 | 2010-08-04 | 三星エスディアイ株式会社 | 有機電解液及びこれを採用したリチウム2次電池 |
JP3617447B2 (ja) * | 1999-12-01 | 2005-02-02 | 松下電器産業株式会社 | リチウム二次電池 |
JP2002015771A (ja) | 2000-04-28 | 2002-01-18 | Toshiba Corp | 非水電解質及び非水電解質二次電池 |
CN1204648C (zh) | 2001-02-28 | 2005-06-01 | 东芝株式会社 | 非水电解质及非水电解质二次电池 |
JP4092618B2 (ja) * | 2001-12-26 | 2008-05-28 | 株式会社ジーエス・ユアサコーポレーション | 非水電解質二次電池 |
JP4492023B2 (ja) * | 2002-05-17 | 2010-06-30 | 三菱化学株式会社 | 非水系電解液二次電池 |
JP4167012B2 (ja) | 2002-06-20 | 2008-10-15 | 株式会社ジーエス・ユアサコーポレーション | 非水電解質二次電池 |
JP4609751B2 (ja) * | 2002-07-15 | 2011-01-12 | 宇部興産株式会社 | リチウム二次電池 |
KR101111365B1 (ko) | 2002-07-15 | 2012-03-09 | 우베 고산 가부시키가이샤 | 비수성 전해액 및 리튬 전지 |
JP5030369B2 (ja) * | 2004-03-30 | 2012-09-19 | 三洋電機株式会社 | リチウム二次電池 |
WO2006115023A1 (ja) * | 2005-04-19 | 2006-11-02 | Matsushita Electric Industrial Co., Ltd. | 非水電解液、およびそれを用いた電気化学エネルギー蓄積デバイス並びに非水電解液二次電池 |
KR101347671B1 (ko) * | 2005-06-07 | 2014-01-03 | 히다치 막셀 가부시키가이샤 | 비수전해액 이차 전지 |
JP5095090B2 (ja) * | 2005-06-07 | 2012-12-12 | 日立マクセルエナジー株式会社 | 非水電解液二次電池 |
JP4893000B2 (ja) * | 2006-02-03 | 2012-03-07 | パナソニック株式会社 | 非水電解液二次電池およびその製造方法 |
JP5070780B2 (ja) * | 2006-09-21 | 2012-11-14 | 宇部興産株式会社 | 非水電解液及びそれを用いたリチウム二次電池 |
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2009
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- 2009-04-07 CN CN2009801124920A patent/CN101990722A/zh active Pending
- 2009-04-07 JP JP2011503903A patent/JP2011517042A/ja not_active Withdrawn
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2010
- 2010-03-26 US US12/680,297 patent/US8822085B2/en active Active
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US6495293B1 (en) * | 1999-09-20 | 2002-12-17 | Hitachi, Ltd. | Non-aqueous electrolyte comprising a fluorinated solvent |
KR20040006429A (ko) * | 2002-07-12 | 2004-01-24 | 삼성에스디아이 주식회사 | 리튬-설퍼 전지용 전해액 및 이를 포함하는 리튬-설퍼 전지 |
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CN101990722A (zh) | 2011-03-23 |
US20120009487A1 (en) | 2012-01-12 |
JP2011517042A (ja) | 2011-05-26 |
US8822085B2 (en) | 2014-09-02 |
JP2013243148A (ja) | 2013-12-05 |
JP5868906B2 (ja) | 2016-02-24 |
WO2009125967A3 (ko) | 2009-12-17 |
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