KR20100065778A - 리튬 이차 전지용 전해질 및 이를 포함하는 리튬 이차 전지 - Google Patents
리튬 이차 전지용 전해질 및 이를 포함하는 리튬 이차 전지 Download PDFInfo
- Publication number
- KR20100065778A KR20100065778A KR1020080124290A KR20080124290A KR20100065778A KR 20100065778 A KR20100065778 A KR 20100065778A KR 1020080124290 A KR1020080124290 A KR 1020080124290A KR 20080124290 A KR20080124290 A KR 20080124290A KR 20100065778 A KR20100065778 A KR 20100065778A
- Authority
- KR
- South Korea
- Prior art keywords
- group
- electrolyte
- substituted
- secondary battery
- lithium secondary
- 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.)
- Ceased
Links
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 105
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical group [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 104
- 239000003792 electrolyte Substances 0.000 title claims abstract description 78
- 239000002000 Electrolyte additive Substances 0.000 claims abstract description 19
- 229910003002 lithium salt Inorganic materials 0.000 claims abstract description 13
- 159000000002 lithium salts Chemical class 0.000 claims abstract description 13
- 239000011356 non-aqueous organic solvent Substances 0.000 claims abstract description 10
- 239000000126 substance Substances 0.000 claims description 24
- 229910052739 hydrogen Inorganic materials 0.000 claims description 20
- 239000001257 hydrogen Substances 0.000 claims description 20
- 125000000217 alkyl group Chemical group 0.000 claims description 16
- 125000000753 cycloalkyl group Chemical group 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 14
- 125000003342 alkenyl group Chemical group 0.000 claims description 13
- 125000003545 alkoxy group Chemical group 0.000 claims description 13
- 125000000304 alkynyl group Chemical group 0.000 claims description 13
- 125000003118 aryl group Chemical group 0.000 claims description 13
- 150000002431 hydrogen Chemical class 0.000 claims description 13
- 125000003277 amino group Chemical group 0.000 claims description 12
- 229910052736 halogen Inorganic materials 0.000 claims description 12
- 150000002367 halogens Chemical class 0.000 claims description 12
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 12
- 125000005587 carbonate group Chemical group 0.000 claims description 11
- 125000002915 carbonyl group Chemical group [*:2]C([*:1])=O 0.000 claims description 10
- 125000004185 ester group Chemical group 0.000 claims description 9
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 7
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 6
- MNFORVFSTILPAW-UHFFFAOYSA-N azetidin-2-one Chemical compound O=C1CCN1 MNFORVFSTILPAW-UHFFFAOYSA-N 0.000 claims description 6
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 5
- 239000000010 aprotic solvent Substances 0.000 claims description 3
- JBKVHLHDHHXQEQ-UHFFFAOYSA-N epsilon-caprolactam Chemical class O=C1CCCCCN1 JBKVHLHDHHXQEQ-UHFFFAOYSA-N 0.000 claims description 3
- 150000002148 esters Chemical class 0.000 claims description 3
- 150000002576 ketones Chemical class 0.000 claims description 3
- XUWHAWMETYGRKB-UHFFFAOYSA-N piperidin-2-one Chemical class O=C1CCCCN1 XUWHAWMETYGRKB-UHFFFAOYSA-N 0.000 claims description 3
- 150000004040 pyrrolidinones Chemical class 0.000 claims description 2
- 238000003860 storage Methods 0.000 abstract description 11
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 22
- 239000010408 film Substances 0.000 description 22
- -1 lithium tetrafluoroborate Chemical compound 0.000 description 22
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 18
- 229910001416 lithium ion Inorganic materials 0.000 description 18
- 230000014759 maintenance of location Effects 0.000 description 16
- 150000001875 compounds Chemical class 0.000 description 15
- 238000011084 recovery Methods 0.000 description 15
- 239000000654 additive Substances 0.000 description 14
- 125000004432 carbon atom Chemical group C* 0.000 description 12
- 230000000052 comparative effect Effects 0.000 description 12
- 239000007774 positive electrode material Substances 0.000 description 12
- YVIVRJLWYJGJTJ-UHFFFAOYSA-N gamma-Valerolactam Chemical compound CC1CCC(=O)N1 YVIVRJLWYJGJTJ-UHFFFAOYSA-N 0.000 description 11
- 239000011572 manganese Substances 0.000 description 11
- 239000003960 organic solvent Substances 0.000 description 11
- 239000002904 solvent Substances 0.000 description 11
- 230000000996 additive effect Effects 0.000 description 10
- 239000010410 layer Substances 0.000 description 10
- 238000002360 preparation method Methods 0.000 description 10
- 239000004020 conductor Substances 0.000 description 9
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 8
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 description 8
- 238000000576 coating method Methods 0.000 description 8
- 238000007599 discharging Methods 0.000 description 8
- 239000007773 negative electrode material Substances 0.000 description 8
- 229910052759 nickel Inorganic materials 0.000 description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 7
- 239000004698 Polyethylene Substances 0.000 description 7
- 229910052782 aluminium Inorganic materials 0.000 description 7
- 239000011230 binding agent Substances 0.000 description 7
- 239000011248 coating agent Substances 0.000 description 7
- 229920000573 polyethylene Polymers 0.000 description 7
- KMTRUDSVKNLOMY-UHFFFAOYSA-N Ethylene carbonate Chemical compound O=C1OCCO1 KMTRUDSVKNLOMY-UHFFFAOYSA-N 0.000 description 6
- 239000011247 coating layer Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 229910052748 manganese Inorganic materials 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 239000012528 membrane Substances 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- 229910052720 vanadium Inorganic materials 0.000 description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 5
- 239000004743 Polypropylene Substances 0.000 description 5
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 5
- 229910052804 chromium Inorganic materials 0.000 description 5
- 229910052802 copper Inorganic materials 0.000 description 5
- 239000010949 copper Substances 0.000 description 5
- 238000000354 decomposition reaction Methods 0.000 description 5
- JBTWLSYIZRCDFO-UHFFFAOYSA-N ethyl methyl carbonate Chemical compound CCOC(=O)OC JBTWLSYIZRCDFO-UHFFFAOYSA-N 0.000 description 5
- 229920001155 polypropylene Polymers 0.000 description 5
- OIFBSDVPJOWBCH-UHFFFAOYSA-N Diethyl carbonate Chemical compound CCOC(=O)OCC OIFBSDVPJOWBCH-UHFFFAOYSA-N 0.000 description 4
- 229910013870 LiPF 6 Inorganic materials 0.000 description 4
- 239000002033 PVDF binder Substances 0.000 description 4
- 239000011149 active material Substances 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000005755 formation reaction Methods 0.000 description 4
- 238000003780 insertion Methods 0.000 description 4
- 230000037431 insertion Effects 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 4
- 229910052749 magnesium Inorganic materials 0.000 description 4
- 229910021645 metal ion Inorganic materials 0.000 description 4
- 238000002156 mixing Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 229920000642 polymer Polymers 0.000 description 4
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
- 239000002002 slurry Substances 0.000 description 4
- 239000010936 titanium Substances 0.000 description 4
- 229910052719 titanium Inorganic materials 0.000 description 4
- PBKONEOXTCPAFI-UHFFFAOYSA-N 1,2,4-trichlorobenzene Chemical compound ClC1=CC=C(Cl)C(Cl)=C1 PBKONEOXTCPAFI-UHFFFAOYSA-N 0.000 description 3
- RFFLAFLAYFXFSW-UHFFFAOYSA-N 1,2-dichlorobenzene Chemical compound ClC1=CC=CC=C1Cl RFFLAFLAYFXFSW-UHFFFAOYSA-N 0.000 description 3
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 3
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 3
- 229910013063 LiBF 4 Inorganic materials 0.000 description 3
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 229910021383 artificial graphite Inorganic materials 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 125000004093 cyano group Chemical group *C#N 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 235000019441 ethanol Nutrition 0.000 description 3
- 239000006260 foam Substances 0.000 description 3
- 230000001965 increasing effect Effects 0.000 description 3
- 229910021382 natural graphite Inorganic materials 0.000 description 3
- 229910052698 phosphorus Inorganic materials 0.000 description 3
- 239000003495 polar organic solvent Substances 0.000 description 3
- HNJBEVLQSNELDL-UHFFFAOYSA-N pyrrolidin-2-one Chemical compound O=C1CCCN1 HNJBEVLQSNELDL-UHFFFAOYSA-N 0.000 description 3
- 229910052761 rare earth metal Inorganic materials 0.000 description 3
- 230000002829 reductive effect Effects 0.000 description 3
- 230000002441 reversible effect Effects 0.000 description 3
- 229910052709 silver Inorganic materials 0.000 description 3
- 229910052712 strontium Inorganic materials 0.000 description 3
- 229920003048 styrene butadiene rubber Polymers 0.000 description 3
- 229910052727 yttrium Inorganic materials 0.000 description 3
- ZZXUZKXVROWEIF-UHFFFAOYSA-N 1,2-butylene carbonate Chemical compound CCC1COC(=O)O1 ZZXUZKXVROWEIF-UHFFFAOYSA-N 0.000 description 2
- GOYDNIKZWGIXJT-UHFFFAOYSA-N 1,2-difluorobenzene Chemical compound FC1=CC=CC=C1F GOYDNIKZWGIXJT-UHFFFAOYSA-N 0.000 description 2
- VAYTZRYEBVHVLE-UHFFFAOYSA-N 1,3-dioxol-2-one Chemical compound O=C1OC=CO1 VAYTZRYEBVHVLE-UHFFFAOYSA-N 0.000 description 2
- WNXJIVFYUVYPPR-UHFFFAOYSA-N 1,3-dioxolane Chemical compound C1COCO1 WNXJIVFYUVYPPR-UHFFFAOYSA-N 0.000 description 2
- YEJRWHAVMIAJKC-UHFFFAOYSA-N 4-Butyrolactone Chemical compound O=C1CCCO1 YEJRWHAVMIAJKC-UHFFFAOYSA-N 0.000 description 2
- OZJPLYNZGCXSJM-UHFFFAOYSA-N 5-valerolactone Chemical compound O=C1CCCCO1 OZJPLYNZGCXSJM-UHFFFAOYSA-N 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 2
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 2
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 2
- 229920002153 Hydroxypropyl cellulose Polymers 0.000 description 2
- 229910013684 LiClO 4 Inorganic materials 0.000 description 2
- 229910013131 LiN Inorganic materials 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 2
- 229920000265 Polyparaphenylene Polymers 0.000 description 2
- 239000004372 Polyvinyl alcohol Substances 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 2
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 2
- 239000006230 acetylene black Substances 0.000 description 2
- 229910052783 alkali metal Inorganic materials 0.000 description 2
- 150000001340 alkali metals Chemical class 0.000 description 2
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 2
- 150000001342 alkaline earth metals Chemical class 0.000 description 2
- 229910003481 amorphous carbon Inorganic materials 0.000 description 2
- 239000006183 anode active material Substances 0.000 description 2
- 229910052785 arsenic Inorganic materials 0.000 description 2
- 229910052796 boron Inorganic materials 0.000 description 2
- 229910052795 boron group element Inorganic materials 0.000 description 2
- 229910052791 calcium Inorganic materials 0.000 description 2
- 239000004917 carbon fiber Substances 0.000 description 2
- 229910052800 carbon group element Inorganic materials 0.000 description 2
- 239000001768 carboxy methyl cellulose Substances 0.000 description 2
- 235000010948 carboxy methyl cellulose Nutrition 0.000 description 2
- 239000005466 carboxylated polyvinylchloride Substances 0.000 description 2
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- 239000006182 cathode active material Substances 0.000 description 2
- 150000005678 chain carbonates Chemical class 0.000 description 2
- MVPPADPHJFYWMZ-UHFFFAOYSA-N chlorobenzene Chemical compound ClC1=CC=CC=C1 MVPPADPHJFYWMZ-UHFFFAOYSA-N 0.000 description 2
- 239000011889 copper foil Substances 0.000 description 2
- 150000005676 cyclic carbonates Chemical class 0.000 description 2
- JHIVVAPYMSGYDF-UHFFFAOYSA-N cyclohexanone Chemical compound O=C1CCCCC1 JHIVVAPYMSGYDF-UHFFFAOYSA-N 0.000 description 2
- 238000003795 desorption Methods 0.000 description 2
- 229920005994 diacetyl cellulose Polymers 0.000 description 2
- VUPKGFBOKBGHFZ-UHFFFAOYSA-N dipropyl carbonate Chemical compound CCCOC(=O)OCCC VUPKGFBOKBGHFZ-UHFFFAOYSA-N 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 2
- FKRCODPIKNYEAC-UHFFFAOYSA-N ethyl propionate Chemical compound CCOC(=O)CC FKRCODPIKNYEAC-UHFFFAOYSA-N 0.000 description 2
- QKBJDEGZZJWPJA-UHFFFAOYSA-N ethyl propyl carbonate Chemical compound [CH2]COC(=O)OCCC QKBJDEGZZJWPJA-UHFFFAOYSA-N 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 229910052731 fluorine Inorganic materials 0.000 description 2
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- 229910052733 gallium Inorganic materials 0.000 description 2
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- 125000005843 halogen group Chemical group 0.000 description 2
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- 150000002500 ions Chemical class 0.000 description 2
- KWGKDLIKAYFUFQ-UHFFFAOYSA-M lithium chloride Chemical compound [Li+].[Cl-] KWGKDLIKAYFUFQ-UHFFFAOYSA-M 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- KKQAVHGECIBFRQ-UHFFFAOYSA-N methyl propyl carbonate Chemical compound CCCOC(=O)OC KKQAVHGECIBFRQ-UHFFFAOYSA-N 0.000 description 2
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- JYVXNLLUYHCIIH-UHFFFAOYSA-N (+/-)-mevalonolactone Natural products CC1(O)CCOC(=O)C1 JYVXNLLUYHCIIH-UHFFFAOYSA-N 0.000 description 1
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Images
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- 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
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- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
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- 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
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- H—ELECTRICITY
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- 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
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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
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Abstract
Description
구분 | 비교예 3 | 비교예 4 | 실시예 7 | 실시예 8 |
4번째 사이클 방전용량 (mAh) | 5.44 | 5.49 | 5.33 | 5.3 |
70번째 사이클 방전용량 (mAh) | 0.46 | 2.1 | 3.34 | 3.67 |
사이클 용량유지율(%) | 8 | 37 | 61 | 69 |
구분 | 비교예 4 | 실시예 7 |
표준용량 | 5.8 | 6.1 |
고온방치 후 방전용량 (mAh) | 4.20 | 4.70 |
고온 용량 유지율 (%) | 72.4 | 77 |
회복방전용량 (mAh) | 5.10 | 5.60 |
용량 회복률 (%) | 86.4 | 92 |
고온 방치 전의 OCV (V) | 4.324 | 4.355 |
고온 방치 후의 OCV (V) | 4.044 | 4.104 |
Δ V (V) | 0.280 | 0.251 |
Claims (7)
- 리튬염, 비수성 유기 용매, 및 하기 화학식 1로 표시되는 전해질 첨가제를 포함하는 것인 리튬 이차 전지용 전해질:[화학식 1](상기 화학식 1에서R1 내지 R5는 서로 같거나 다른 것으로 각각 독립적으로, 수소, 할로겐, 히드록시기, 아민기, 알콕시기, 에스테르기, 카보네이트기, 카르보닐기, 치환 또는 비치환된 알킬기, 치환 또는 비치환된 아릴기, 치환 또는 비치환된 사이클로알킬기, 치환 또는 비치환된 알케닐기, 치환 또는 비치환된 알키닐기, 또는 이들의 조합이고,n은 1 내지 4 사이의 정수이고, 단, 상기 n이 2 이상인 경우, R2 내지 R5 는 동시에 수소일 수 없음.)
- 제 1 항에 있어서,상기 화학식 1로 표시되는 전해질 첨가제의 R1 내지 R3는 서로 같거나 다른 것으로 각각 독립적으로, 수소, 할로겐, 히드록시기, 아민기, 알콕시기, 에스테르기, 카보네이트기, 카르보닐기, 치환 또는 비치환된 아릴기, 치환 또는 비치환된 알케닐기, 치환 또는 비치환된 알키닐기, 또는 이들의 조합이고,R4 및 R5 는 서로 같거나 다른 것으로 각각 독립적으로, 수소, 할로겐, 히드록시기, 아민기, 알콕시기, 치환 또는 비치환된 알킬기, 치환 또는 비치환된 사이클로알킬기, 또는 이들의 조합인 것인 리튬 이차 전지용 전해질.
- 제1항에 있어서,상기 전해질 첨가제는 하기 화학식 2, 또는 화학식 3으로 표시되는 것인 리튬 이차 전지용 전해질:[화학식 2](상기 화학식 2에서R1 내지 R5는 서로 같거나 다른 것으로 각각 독립적으로, 수소, 할로겐, 히드록시기, 아민기, 알콕시기, 에스테르기, 카보네이트기, 카르보닐기, 치환 또는 비치환된 알킬기, 치환 또는 비치환된 아릴기, 치환 또는 비치환된 사이클로알킬기, 치환 또는 비치환된 알케닐기, 치환 또는 비치환된 알키닐기, 또는 이들의 조합인 것임.)[화학식 3](상기 화학식 3에서R1 내지 R7은 서로 같거나 다른 것으로 각각 독립적으로, 수소, 할로겐, 히드록시기, 아민기, 알콕시기, 에스테르기, 카보네이트기, 카르보닐기, 치환 또는 비치환된 알킬기, 치환 또는 비치환된 아릴기, 치환 또는 비치환된 사이클로알킬기, 치환 또는 비치환된 알케닐기, 치환 또는 비치환된 알키닐기, 또는 이들의 조합이고, 단, 상기 R2 내지 R7은 동시에 수소일 수 없음.)
- 제1항에 있어서,상기 전해질 첨가제는 아제티디논, 아제티디논의 유도체, 피롤리디논의 유도체, 피페리디논의 유도체, 아제파논의 유도체, 또는 이들의 조합인 것인 리튬 이차 전지용 전해질.
- 제1항에 있어서,상기 전해질 첨가제는 전해질 총중량에 대하여, 0.1 내지 10 중량% 범위로 포함하는 것인 리튬 이차 전지용 전해질.
- 제1항에 있어서,상기 비수성 유기 용매는 카보네이트계, 에스테르계, 에테르계, 케톤계, 알코올계, 비양성자성 용매 또는 이들의 조합인 것인 리튬 이차 전지용 전해질.
- 전해질; 음극; 및 양극을 포함하고,상기 전해질은 제1항 내지 제6항 중에서 선택된 어느 한 항에 따른 전해질인 것인 리튬 이차 전지.
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US12/559,846 US8945765B2 (en) | 2008-12-08 | 2009-09-15 | Secondary lithium battery electrolyte and secondary lithium battery including the same |
JP2009277895A JP5424840B2 (ja) | 2008-12-08 | 2009-12-07 | リチウム二次電池用電解質及びそれを含むリチウム二次電池 |
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KR20150042091A (ko) * | 2013-10-10 | 2015-04-20 | 삼성전자주식회사 | 리튬 이차 전지용 전해질 및 이를 포함하는 리튬 이차 전지 |
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KR102790043B1 (ko) * | 2022-02-25 | 2025-04-07 | 주식회사 에스켐 | 이차전지용 전해질 및 이를 포함하는 이차전지 |
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US8945765B2 (en) | 2015-02-03 |
JP2010135330A (ja) | 2010-06-17 |
US20100143797A1 (en) | 2010-06-10 |
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