WO2023059063A1 - 포화 퓨로디옥신 유도체 화합물 및 그의 이차전지용 첨가제 용도 - Google Patents
포화 퓨로디옥신 유도체 화합물 및 그의 이차전지용 첨가제 용도 Download PDFInfo
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- WO2023059063A1 WO2023059063A1 PCT/KR2022/014989 KR2022014989W WO2023059063A1 WO 2023059063 A1 WO2023059063 A1 WO 2023059063A1 KR 2022014989 W KR2022014989 W KR 2022014989W WO 2023059063 A1 WO2023059063 A1 WO 2023059063A1
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- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 102100026038 Lens fiber membrane intrinsic protein Human genes 0.000 description 1
- 101710115990 Lens fiber membrane intrinsic protein Proteins 0.000 description 1
- 229910015015 LiAsF 6 Inorganic materials 0.000 description 1
- 229910013063 LiBF 4 Inorganic materials 0.000 description 1
- 229910013684 LiClO 4 Inorganic materials 0.000 description 1
- 229910012513 LiSbF 6 Inorganic materials 0.000 description 1
- 229910012381 LiSn Inorganic materials 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 229920000914 Metallic fiber Polymers 0.000 description 1
- XOBKSJJDNFUZPF-UHFFFAOYSA-N Methoxyethane Chemical compound CCOC XOBKSJJDNFUZPF-UHFFFAOYSA-N 0.000 description 1
- 229910014103 Na-S Inorganic materials 0.000 description 1
- 229910014147 Na—S Inorganic materials 0.000 description 1
- 229910018095 Ni-MH Inorganic materials 0.000 description 1
- 229910018477 Ni—MH Inorganic materials 0.000 description 1
- 239000004696 Poly ether ether ketone Substances 0.000 description 1
- 229930182556 Polyacetal Natural products 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 239000004695 Polyether sulfone Substances 0.000 description 1
- 239000004642 Polyimide Substances 0.000 description 1
- 229920000265 Polyparaphenylene Polymers 0.000 description 1
- 239000004721 Polyphenylene oxide Substances 0.000 description 1
- 239000004734 Polyphenylene sulfide Substances 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 239000004699 Ultra-high molecular weight polyethylene Substances 0.000 description 1
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- 239000002253 acid Substances 0.000 description 1
- 239000004480 active ingredient Substances 0.000 description 1
- 239000003463 adsorbent Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
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- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical compound [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 1
- 229910003481 amorphous carbon Inorganic materials 0.000 description 1
- 239000003242 anti bacterial agent Substances 0.000 description 1
- 125000003710 aryl alkyl group Chemical group 0.000 description 1
- 125000005110 aryl thio group Chemical group 0.000 description 1
- 125000004104 aryloxy group Chemical group 0.000 description 1
- 125000004429 atom Chemical group 0.000 description 1
- 229910052788 barium Inorganic materials 0.000 description 1
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 description 1
- 229910052790 beryllium Inorganic materials 0.000 description 1
- ATBAMAFKBVZNFJ-UHFFFAOYSA-N beryllium atom Chemical compound [Be] ATBAMAFKBVZNFJ-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052794 bromium Inorganic materials 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 229910052792 caesium Inorganic materials 0.000 description 1
- TVFDJXOCXUVLDH-UHFFFAOYSA-N caesium atom Chemical compound [Cs] TVFDJXOCXUVLDH-UHFFFAOYSA-N 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 239000003610 charcoal Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000000748 compression moulding Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000002537 cosmetic Substances 0.000 description 1
- 150000004292 cyclic ethers Chemical class 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000009831 deintercalation Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 229940019778 diethylene glycol diethyl ether Drugs 0.000 description 1
- SBZXBUIDTXKZTM-UHFFFAOYSA-N diglyme Chemical compound COCCOCCOC SBZXBUIDTXKZTM-UHFFFAOYSA-N 0.000 description 1
- NKDDWNXOKDWJAK-UHFFFAOYSA-N dimethoxymethane Chemical compound COCOC NKDDWNXOKDWJAK-UHFFFAOYSA-N 0.000 description 1
- 150000002009 diols Chemical group 0.000 description 1
- POLCUAVZOMRGSN-UHFFFAOYSA-N dipropyl ether Chemical compound CCCOCCC POLCUAVZOMRGSN-UHFFFAOYSA-N 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000006056 electrooxidation reaction Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 229920006242 ethylene acrylic acid copolymer Polymers 0.000 description 1
- 229920000840 ethylene tetrafluoroethylene copolymer Polymers 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- XUCNUKMRBVNAPB-UHFFFAOYSA-N fluoroethene Chemical compound FC=C XUCNUKMRBVNAPB-UHFFFAOYSA-N 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 229910052730 francium Inorganic materials 0.000 description 1
- KLMCZVJOEAUDNE-UHFFFAOYSA-N francium atom Chemical compound [Fr] KLMCZVJOEAUDNE-UHFFFAOYSA-N 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000008570 general process Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229910021389 graphene Inorganic materials 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 125000001072 heteroaryl group Chemical group 0.000 description 1
- 229920001903 high density polyethylene Polymers 0.000 description 1
- 239000004700 high-density polyethylene Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- XMBWDFGMSWQBCA-UHFFFAOYSA-N hydrogen iodide Chemical compound I XMBWDFGMSWQBCA-UHFFFAOYSA-N 0.000 description 1
- 229910000043 hydrogen iodide Inorganic materials 0.000 description 1
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009830 intercalation Methods 0.000 description 1
- 229910052740 iodine Inorganic materials 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 229920000092 linear low density polyethylene Polymers 0.000 description 1
- 239000004707 linear low-density polyethylene Substances 0.000 description 1
- HSZCZNFXUDYRKD-UHFFFAOYSA-M lithium iodide Inorganic materials [Li+].[I-] HSZCZNFXUDYRKD-UHFFFAOYSA-M 0.000 description 1
- IDNHOWMYUQKKTI-UHFFFAOYSA-M lithium nitrite Chemical compound [Li+].[O-]N=O IDNHOWMYUQKKTI-UHFFFAOYSA-M 0.000 description 1
- ACFSQHQYDZIPRL-UHFFFAOYSA-N lithium;bis(1,1,2,2,2-pentafluoroethylsulfonyl)azanide Chemical compound [Li+].FC(F)(F)C(F)(F)S(=O)(=O)[N-]S(=O)(=O)C(F)(F)C(F)(F)F ACFSQHQYDZIPRL-UHFFFAOYSA-N 0.000 description 1
- 229920001684 low density polyethylene Polymers 0.000 description 1
- 239000004702 low-density polyethylene Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- ZADYMNAVLSWLEQ-UHFFFAOYSA-N magnesium;oxygen(2-);silicon(4+) Chemical compound [O-2].[O-2].[O-2].[Mg+2].[Si+4] ZADYMNAVLSWLEQ-UHFFFAOYSA-N 0.000 description 1
- 239000004750 melt-blown nonwoven Substances 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- YQCIWBXEVYWRCW-UHFFFAOYSA-N methane;sulfane Chemical compound C.S YQCIWBXEVYWRCW-UHFFFAOYSA-N 0.000 description 1
- LRMHVVPPGGOAJQ-UHFFFAOYSA-N methyl nitrate Chemical compound CO[N+]([O-])=O LRMHVVPPGGOAJQ-UHFFFAOYSA-N 0.000 description 1
- 150000007522 mineralic acids Chemical class 0.000 description 1
- 239000002086 nanomaterial Substances 0.000 description 1
- LYGJENNIWJXYER-UHFFFAOYSA-N nitromethane Chemical compound C[N+]([O-])=O LYGJENNIWJXYER-UHFFFAOYSA-N 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 239000005486 organic electrolyte Substances 0.000 description 1
- 150000002898 organic sulfur compounds Chemical class 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- 238000002161 passivation Methods 0.000 description 1
- 239000003961 penetration enhancing agent Substances 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920002493 poly(chlorotrifluoroethylene) Polymers 0.000 description 1
- 229920003207 poly(ethylene-2,6-naphthalate) Polymers 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920001748 polybutylene Polymers 0.000 description 1
- 229920001707 polybutylene terephthalate Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 239000005023 polychlorotrifluoroethylene (PCTFE) polymer Substances 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920006393 polyether sulfone Polymers 0.000 description 1
- 229920002530 polyetherether ketone Polymers 0.000 description 1
- 239000011112 polyethylene naphthalate Substances 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 229920006324 polyoxymethylene Polymers 0.000 description 1
- 229920006380 polyphenylene oxide Polymers 0.000 description 1
- 229920000069 polyphenylene sulfide Polymers 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 229910052705 radium Inorganic materials 0.000 description 1
- HCWPIIXVSYCSAN-UHFFFAOYSA-N radium atom Chemical compound [Ra] HCWPIIXVSYCSAN-UHFFFAOYSA-N 0.000 description 1
- 238000002407 reforming Methods 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229910052701 rubidium Inorganic materials 0.000 description 1
- IGLNJRXAVVLDKE-UHFFFAOYSA-N rubidium atom Chemical compound [Rb] IGLNJRXAVVLDKE-UHFFFAOYSA-N 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 229910052712 strontium Inorganic materials 0.000 description 1
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 description 1
- 229920003048 styrene butadiene rubber Polymers 0.000 description 1
- 230000008022 sublimation Effects 0.000 description 1
- 125000001424 substituent group Chemical group 0.000 description 1
- 150000008163 sugars Chemical class 0.000 description 1
- 150000003463 sulfur Chemical class 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 description 1
- 229910001887 tin oxide Inorganic materials 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- YFNKIDBQEZZDLK-UHFFFAOYSA-N triglyme Chemical compound COCCOCCOCCOC YFNKIDBQEZZDLK-UHFFFAOYSA-N 0.000 description 1
- 229920000785 ultra high molecular weight polyethylene Polymers 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D493/00—Heterocyclic compounds containing oxygen atoms as the only ring hetero atoms in the condensed system
- C07D493/02—Heterocyclic compounds containing oxygen atoms as the only ring hetero atoms in the condensed system in which the condensed system contains two hetero rings
- C07D493/04—Ortho-condensed systems
-
- 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
-
- 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 saturated furodeoxin derivative compound and its use as an additive for a secondary battery, and more specifically, to a non-aqueous electrolyte composition for a secondary battery (particularly, lithium- When included as an additive in a non-aqueous electrolyte composition for a sulfur secondary battery), a novel compound that can solve the problem of dissolution of lithium polysulfide in existing electrolyte compositions and at the same time realize high capacity retention rate characteristics for various lithium salts, a method for preparing the same, and a new compound It relates to an electrolyte additive and a non-aqueous electrolyte composition, and a secondary battery (particularly, a lithium-sulfur secondary battery) including the electrolyte composition.
- a lithium-sulfur secondary battery is a secondary battery that uses a sulfur-based material with a sulfur-sulfur bond as a positive electrode active material and lithium metal as a negative electrode active material. It is non-toxic and has the advantage of having a low weight per atom.
- the theoretical discharge capacity and theoretical energy density of the lithium-sulfur secondary battery are 1,672 mAh/g-sulfur and 2,600 Wh/kg, respectively, which are the theoretical energy densities of other battery systems currently being studied (Ni-MH battery: 450 Wh/kg , Li-FeS battery: 480 Wh/kg, Li-MnO 2 battery: 1,000 Wh/kg, Na-S battery: 800 Wh/kg), so it is attracting attention as a battery with high energy density characteristics.
- Lithium polysulfide dissolved in the electrolyte gradually diffuses toward the negative electrode and leaves the electrochemical reaction area of the positive electrode, so that it cannot participate in the electrochemical reaction of the positive electrode, resulting in a capacity loss.
- lithium polysulfide increases the viscosity of the electrolyte solution and lowers the ionic conductivity, and lithium polysulfide reacts with the negative electrode made of lithium metal through continuous charge/discharge reactions to form lithium sulfide (Li 2 S) on the surface of lithium metal. Due to the sticking, there is a problem that the reaction activity is lowered and the potential characteristics are deteriorated.
- An object of the present invention when included as an additive in a non-aqueous electrolyte composition for a secondary battery (particularly, a non-aqueous electrolyte composition for a lithium-sulfur secondary battery), is a conventional non-aqueous electrolyte used in a secondary battery (particularly, a lithium-sulfur secondary battery).
- a novel compound capable of solving the problem of dissolution of lithium polysulfide and at the same time enhancing the stability of a lithium electrode and realizing a high capacity retention rate, a method for preparing the same, an electrolyte additive and a non-aqueous electrolyte composition containing the compound, and the electrolyte composition It is to provide a secondary battery (particularly, a lithium-sulfur secondary battery) comprising
- the present invention provides a compound represented by Formula 1 below:
- R 1 and R 2 are each independently a hydrogen atom, a halogen atom, a substituted or unsubstituted C1-C30 alkyl group, a substituted or unsubstituted C2-C30 alkenyl group, a substituted or unsubstituted C2-C30 alkynyl group, Substituted or unsubstituted C1-C30 alkoxy group, substituted or unsubstituted C3-C30 cycloalkyl group, substituted or unsubstituted C1-C30 alkylene-O-C1-C30 alkyl group, substituted or unsubstituted C3-C30 heterocyclo Alkyl group, substituted or unsubstituted C6-C60 aryl group, substituted or unsubstituted C1-C60 heteroaryl group, substituted or unsubstituted C7-C60 aralkyl group, substituted or unsubstituted C6-
- the compound represented by Formula 1 may be selected from the group consisting of compounds represented by Formulas 2 to 4 below:
- R 3 and R 4 are each independently a substituted or unsubstituted C1-C30 alkyl group.
- the compound represented by Chemical Formula 2 may be selected from the group consisting of compounds represented by Chemical Formulas 2-1 to 2-3;
- the compound represented by Formula 3 may be a compound represented by Formula 3-1 or 3-2;
- the compound represented by Formula 4 may be a compound represented by Formula 4-1 or 4-2:
- Another aspect of the present invention is a method for preparing the compound represented by Chemical Formula 2, wherein dianhydrosugar hexitol-ethylene glycol, which is a compound in which ethylene glycol is added to both terminal hydroxyl groups of dianhydrosugar hexitol, is heated in the presence of an acid catalyst.
- a method comprising steps is provided.
- Another aspect of the present invention is a method for producing a compound represented by Formula 3 or 4, comprising heating a compound represented by Formula A or B and an alkylating agent in the presence of a base catalyst, respectively.
- Another aspect of the present invention provides an electrolyte additive including the compound represented by Formula 1 above.
- Another aspect of the present invention is a non-aqueous electrolyte solvent; lithium salt; and an electrolyte additive of the present invention, wherein the content of the electrolyte additive is 0.1 to 10 parts by weight based on 100 parts by weight of the total electrolyte composition.
- anode cathode
- separation membrane separator
- non-aqueous electrolyte composition of the present invention a non-aqueous electrolyte composition of the present invention.
- a non-aqueous electrolyte composition for a secondary battery particularly, a non-aqueous electrolyte composition for a lithium-sulfur secondary battery
- a non-aqueous electrolyte composition for a lithium-sulfur secondary battery compared to conventional non-aqueous electrolyte compositions, lithium polysulfide dissolution problem
- a non-aqueous electrolyte composition capable of improving the battery life characteristics by improving the stability of the lithium electrode and improving the capacity retention rate over the cycle, and a secondary battery including the same (particularly, a lithium-sulfur secondary battery) battery) can be provided.
- the compound of Formula 1 can be prepared from dianhydrosugar hexitol derived from natural resources, it can be used as an additive for secondary batteries to improve eco-friendliness in the field of secondary batteries. there is.
- One aspect of the present invention relates to a compound represented by Formula 1 below:
- R 1 and R 2 are each independently a hydrogen atom, a halogen atom, a substituted or unsubstituted C1-C30 alkyl group, a substituted or unsubstituted C2-C30 alkenyl group, a substituted or unsubstituted C2-C30 alkynyl group, Substituted or unsubstituted C1-C30 alkoxy group, substituted or unsubstituted C3-C30 cycloalkyl group, substituted or unsubstituted C1-C30 alkylene-O-C1-C30 alkyl group, substituted or unsubstituted C3-C30 heterocyclo Alkyl group, substituted or unsubstituted C6-C60 aryl group, substituted or unsubstituted C1-C60 heteroaryl group, substituted or unsubstituted C7-C60 aralkyl group, substituted or unsubstituted C6-
- R 1 and R 2 are each independently a hydrogen atom, a halogen atom, a substituted or unsubstituted C1-C12 alkyl group, a substituted or unsubstituted C2-C12 alkenyl group, or a substituted or unsubstituted C1-C12 alkenyl group.
- R 1 and R 2 are each independently a hydrogen atom, a halogen atom, a substituted or unsubstituted C1-C6 alkyl group, a substituted or unsubstituted C2-C6 alkenyl group, a substituted or unsubstituted C2-C6 alkenyl group, Unsubstituted C2-C6 alkynyl group, substituted or unsubstituted C1-C6 alkoxy group, substituted or unsubstituted C3-C6 cycloalkyl group, substituted or unsubstituted C1-C6 alkylene-O-C1-C6 alkyl group, substituted Or an unsubstituted C3-C6 heterocycloalkyl group, a substituted or unsubstituted C6-C10 aryl group, a substituted or unsubstituted C1-C10 heteroaryl group, a substituted or unsubstituted
- substituted or unsubstituted means that the group is unsubstituted or substituted with one or more substituents selected from a halogen atom, a C1-C6 alkyl group, or a C1-C6 halogenated alkyl group.
- the compound represented by Formula 1 may be selected from the group consisting of compounds represented by Formulas 2 to 4 below:
- R 3 and R 4 are each independently a substituted or unsubstituted C1-C30 alkyl group, more specifically, a substituted or unsubstituted C1-C12 alkyl group, and more specifically, a substituted or unsubstituted C1-C30 alkyl group. It is a C1-C6 alkyl group.
- the compound represented by Chemical Formula 2 may be selected from the group consisting of compounds represented by Chemical Formulas 2-1 to 2-3;
- the compound represented by Formula 3 may be a compound represented by Formula 3-1 or 3-2;
- the compound represented by Formula 4 may be a compound represented by Formula 4-1 or 4-2:
- Another aspect of the present invention is a method for preparing the compound represented by Chemical Formula 2, wherein dianhydrosugar hexitol-ethylene glycol, which is a compound in which ethylene glycol is added to both terminal hydroxyl groups of dianhydrosugar hexitol, is heated in the presence of an acid catalyst.
- a method comprising steps is provided.
- Anhydrous sugar alcohol refers to any substance obtained by removing one or more water molecules from a compound obtained by adding hydrogen to a reducing end group of sugars, generally called hydrogenated sugar or sugar alcohol.
- Anhydrous sugar hexitol is an anhydrous sugar alcohol formed by removing two water molecules from the inside of hexitol, and has a diol form with two hydroxyl groups in the molecule.
- the dianhydrosugar hexitol may be 1,4:3,6-dianhydrohexitol, and more specifically, isosorbide, isomannide, isoidide, or a mixture of two or more thereof. .
- the dianhydrosugar hexitol-ethylene glycol may be prepared by an addition reaction between dianhydrosugar hexitol and ethylene oxide having the following structure.
- the addition reaction of dianhydrosugar hexitol with ethylene oxide is, for example, at a temperature of 100 ° C or higher, more specifically 100 ° C to 140 ° C, for 1 hour or more, more specifically 1 hour to 5 hours It may be performed during, but is not limited thereto.
- the addition reaction between hexitol per dianhydrogen and ethylene oxide may be carried out using 2 moles or more of ethylene oxide based on 1 mole of hexitol per dianhydrogen.
- the amount of ethylene oxide used per mol of hexitol per dianhydrogen may be 2 mol or more, 3 mol or more, 4 mol or more, or 5 mol or more, and also 25 mol or less. , 20 moles or less, 15 moles or less, or 10 moles or less.
- the compound represented by Chemical Formula 2-1 may be prepared by heating a product obtained by performing an addition reaction using 2 moles or more of ethylene oxide per 1 mole of isosorbide in the presence of an acid catalyst.
- the compound represented by Chemical Formula 2-2 may be prepared by heating a product obtained by performing an addition reaction using 2 mol or more of ethylene oxide per 1 mol of isomannide in the presence of an acid catalyst.
- the compound represented by Chemical Formula 2-3 may be prepared by heating a product obtained by performing an addition reaction using 2 mol or more of ethylene oxide per 1 mol of isoidide in the presence of an acid catalyst.
- the acid catalyst may be an inorganic acid or an organic acid catalyst, and more specifically, it may be selected from sulfuric acid, hydrochloric acid, hydrobromic acid, phosphoric acid, methanesulfonic acid, benzenesulfonic acid, p-toluenesulfonic acid, or a combination thereof. may, but is not limited thereto.
- the amount of the acid catalyst used may be, for example, 0.01 parts by weight or more, 0.02 parts by weight or more, or 0.05 parts by weight or more based on 100 parts by weight of hexitol per dianhydrogen. And, it may also be 5 parts by weight or less, 2 parts by weight or less, or 1 part by weight or less, but is not limited thereto.
- Another aspect of the present invention is a method for producing a compound represented by Formula 3 or 4, comprising heating a compound represented by Formula A or B and an alkylating agent in the presence of a base catalyst, respectively.
- the alkylating agent is of the formula R-X [wherein R is a substituted or unsubstituted C1-C30 alkyl group (more specifically a substituted or unsubstituted C1-C12 alkyl group, more specifically a substituted or unsubstituted C1-C30 alkyl group). -C6 alkyl group), and X is a halogen atom (eg, F, Cl, Br or I)] having an alkyl halide, a substituted or unsubstituted C1-C30 alkyl group having an aromatic sulfonate, or these It may be selected from combinations, but is not limited thereto.
- R is a substituted or unsubstituted C1-C30 alkyl group (more specifically a substituted or unsubstituted C1-C12 alkyl group, more specifically a substituted or unsubstituted C1-C30 alkyl group).
- -C6 alkyl group
- the alkyl halide may be methyl iodide
- the aromatic sulfonate having a substituted or unsubstituted C1-C30 alkyl group is toluenesulfonate having a C1-C30 alkyl group substituted with a halogen atom (eg, F).
- a halogen atom eg, F
- the base catalyst may be selected from inorganic base catalysts, organic base catalysts, or combinations thereof, and more specifically, may be selected from sodium hydride, hydrogen iodide, hydrogen sulfide, aluminum hydride, or combinations thereof. However, it is not limited thereto.
- the amount of the base catalyst used is, for example, 1 part by weight or more, 2 parts by weight or more, based on 100 parts by weight of the compound of Formula A or B. It may be 5 parts by weight or more, and may also be 80 parts by weight or less, 60 parts by weight or less, or 50 parts by weight or less, but is not limited thereto.
- the reaction of the compound represented by Formula A or B with the alkylating agent is, for example, at least 40 ° C, more specifically at a temperature of 40 ° C to 80 ° C, for at least 5 hours, more specifically at 5 hours to 80 ° C. It may be performed for 15 hours, but is not limited thereto.
- the compound represented by Formula 1 can be usefully used as an electrolyte additive for a non-aqueous electrolyte composition for a secondary battery, particularly a non-aqueous electrolyte composition for a lithium-sulfur secondary battery, which is another aspect of the present invention.
- a non-aqueous electrolyte composition for a lithium-sulfur secondary battery which is another aspect of the present invention.
- the use of the compound of the present invention is by no means limited thereto, and the compound represented by Chemical Formula 1 can be used for various purposes (e.g., surfactant, active ingredient penetration enhancer and antibacterial agent in cosmetics) other than electrolyte additives for secondary batteries.
- the compound represented by Chemical Formula 1 can be used for various purposes (e.g., surfactant, active ingredient penetration enhancer and antibacterial agent in cosmetics) other than electrolyte additives for secondary batteries.
- Another aspect of the present invention relates to an electrolyte additive including the compound represented by Formula 1 above.
- the electrolyte additive may be composed of the compound represented by Chemical Formula 1 alone.
- the electrolyte additive may further include one or more components other than the compound represented by Chemical Formula 1.
- components that can be used as additives for secondary batteries may be used without particular limitation.
- the electrolyte additive may further include (h) a nitric acid-based compound as a component other than the compound represented by Formula 1.
- a nitric acid-based compound as a component other than the compound represented by Formula 1.
- the (sub) nitric acid compound is, for example, an inorganic nitric acid compound (eg, lithium nitrate (LiNO 3 ) and lithium nitrite (LiNO 2 ), etc.), an organic nitric acid compound (eg, nitromethane (CH 3 NO 2 ), methyl nitrate (CH 3 NO 3 ), etc.), or a mixture thereof, but is not limited thereto.
- an inorganic nitric acid compound eg, lithium nitrate (LiNO 3 ) and lithium nitrite (LiNO 2 ), etc.
- an organic nitric acid compound eg, nitromethane (CH 3 NO 2 ), methyl nitrate (CH 3 NO 3 ), etc.
- a mixture thereof but is not limited thereto.
- the electrolyte additive when the electrolyte additive includes the compound represented by Formula 1 and other components (eg, the (h) nitric acid-based compound), the content of the other components is Based on 1 part by weight of the compound represented by Formula 1, it may be 0.1 to 2 parts by weight, more specifically, it may be 0.1 parts by weight or more, 0.2 parts by weight or more, or 0.3 parts by weight or more, and also 2 parts by weight or less, 1.8 parts by weight part or less or 1.5 parts by weight or less, but is not limited thereto.
- the compound represented by Formula 1 when the electrolyte additive includes the compound represented by Formula 1 and other components (eg, the (h) nitric acid-based compound), the content of the other components is Based on 1 part by weight of the compound represented by Formula 1, it may be 0.1 to 2 parts by weight, more specifically, it may be 0.1 parts by weight or more, 0.2 parts by weight or more, or 0.3 parts by weight or more, and also 2 parts by weight or less, 1.8 parts by weight part or
- Another aspect of the present invention is a non-aqueous electrolyte solvent; lithium salt; and the electrolyte additive of the present invention described above, wherein the content of the electrolyte additive is 0.1 to 10 parts by weight based on 100 parts by weight of the total electrolyte composition.
- the content of the electrolyte additive in the total 100 parts by weight of the non-aqueous electrolyte composition of the present invention is less than 0.1 part by weight, the effect of improving the life retention rate (or capacity retention rate) of a lithium-sulfur secondary battery may be insufficient when using such an electrolyte composition, and conversely, If the content of the electrolyte additive exceeds 10 parts by weight, the film may become thick when using such an electrolyte composition, and as a result, the resistance may rather increase and the life retention rate (or capacity retention rate) of the lithium-sulfur secondary battery may decrease.
- the content of the electrolyte additive in a total of 100 parts by weight of the non-aqueous electrolyte composition of the present invention may be 0.1 part by weight or more, 0.5 parts by weight or more, 1 part by weight or more, or 1.2 parts by weight or more, and also 10 parts by weight or less, 9.5 parts by weight or less, 9 parts by weight or less, or 8.9 parts by weight or less.
- the non-aqueous electrolyte solvent included in the non-aqueous electrolyte composition of the present invention serves as a medium through which ions involved in the electrochemical reaction of the lithium-sulfur secondary battery can move.
- the non-aqueous electrolyte solvent may be a linear ether, a cyclic ether, or a combination thereof.
- the non-aqueous electrolyte solvent is, for example, dimethyl ether, diethyl ether, dipropyl ether, dibutyl ether, diisobutyl ether, ethylmethyl ether, ethylpropyl ether, ethyl tertbutyl ether, dimethoxy Methane, trimethoxymethane, dimethoxyethane, diethoxyethane, dimethoxypropane, diethylene glycol dimethyl ether, diethylene glycol diethyl ether, triethylene glycol dimethyl ether, tetraethylene glycol dimethyl ether, ethylene glycol divinyl ether, Diethylene glycol divinyl ether, triethylene glycol divinyl ether, dipropylene glycol dimethylene ether, butylene glycol ether, diethylene glycol ethyl methyl ether, diethylene glycol isopropyl methyl ether, diethylene glycol butyl methyl
- Ph means phenyl.
- the molar concentration of the lithium salt in the non-aqueous electrolyte composition of the present invention may be 0.5 M to 5 M. If the molar concentration of the lithium salt in the electrolyte composition is less than 0.5 M, the capacity retention rate may be lowered. Conversely, if it exceeds 5 M, the lithium salt may be eluted and economical efficiency is lowered, which is undesirable.
- the molar concentration of the lithium salt in the non-aqueous electrolyte composition of the present invention may be 0.5 M or more, 0.6 M or more, 0.7 M or more, 0.8 M or more, 0.9 M or more, or 1 M or more, and may be 5 M or less, 4.8 M or less. M or less, 4.6 M or less, 4.4 M or less, or 4.2 M or less.
- the anode; cathode; separation membrane; and a secondary battery comprising; and the above non-aqueous electrolyte composition of the present invention.
- the secondary battery of the present invention includes a positive electrode and a negative electrode disposed opposite to each other; a separator interposed between the anode and the cathode; and a non-aqueous electrolyte composition according to the present invention impregnated into the positive electrode, the negative electrode, and the separator and having ionic conductivity.
- the positive electrode may include a positive electrode current collector; and a cathode active material layer formed on the cathode current collector.
- any material that can be used as a current collector in this technical field may be used, and specifically, it is preferable to use foamed aluminum, foamed nickel, or the like having excellent conductivity.
- the cathode active material layer is a cathode active material and may include elemental sulfur (S 8 ), a sulfur-based compound, or a mixture thereof.
- the cathode active material layer includes a conductive material.
- the conductive material may be porous. Therefore, as the conductive material, any material having porosity and conductivity may be used without limitation, and for example, a porous carbon-based material may be used. Carbon black, graphite, graphene, activated carbon, carbon fiber, etc. may be used as such a carbon-based material. In addition, metallic fibers such as metal mesh; metallic powders such as copper, silver, nickel, and aluminum; Alternatively, organic conductive materials such as polyphenylene derivatives can also be used. The conductive materials may be used alone or in combination.
- the positive active material layer may further include a binder to improve bonding between the positive active material and the conductive material and between the positive active material layer and the positive current collector.
- the binder may include a thermoplastic resin or a thermosetting resin.
- a thermoplastic resin for example, polyethylene, polyethylene oxide, polypropylene, polytetrafluoroethylene (PTFE), polyvinylidene fluoride (PVDF), styrene-butadiene rubber, tetrafluoroethylene-perfluoroalkylvinyl ether copolymer, vinyl fluoride Idene-hexafluoropropylene copolymer, vinylidene fluoride-chlorotrifluoroethylene copolymer, ethylene-tetrafluoroethylene copolymer, polychlorotrifluoroethylene, vinylidene fluoride-pentafluoropropylene copolymer, propylene -Tetrafluoroethylene copolymer, ethylene-chlorotrifluoroethylene copolymer, vinylidene fluoride-hexafluoropropylene-tetrafluoroethylene copo
- the positive electrode as described above may be prepared according to a conventional method, and specifically, a composition for forming a positive electrode active material layer prepared by mixing a positive electrode active material, a conductive material, and a binder in an organic solvent is applied and dried on a positive electrode current collector, and optionally In order to improve the electrode density, it can be manufactured by compression molding on the positive electrode current collector.
- the organic solvent it is preferable to use an organic solvent capable of uniformly dispersing the cathode active material, the binder, and the conductive material and easily evaporating.
- the organic solvent one selected from acetonitrile, methanol, ethanol, tetrahydrofuran, water, isopropyl alcohol, or a combination thereof may be used.
- the negative electrode may include a negative electrode current collector; and an anode active material layer formed on the anode current collector, or a lithium metal plate alone.
- the anode current collector is for supporting the anode active material, and is not particularly limited as long as it has excellent conductivity and is electrochemically stable in the voltage range of a lithium metal battery.
- copper, stainless steel, aluminum, nickel, titanium, palladium , carbon, nickel, or silver surface treated on the surface of fired carbon, copper, or stainless steel, aluminum-cadmium alloy, or the like can be used.
- the negative electrode current collector may form fine irregularities on its surface to enhance bonding strength with the negative electrode active material layer, and may be used in various forms such as a film, sheet, foil, mesh, net, porous body, foam, or nonwoven fabric. .
- the negative electrode active material layer is a negative electrode active material, and includes a material capable of reversibly intercalating or deintercalating lithium ions (Li + ); materials capable of reacting with lithium ions to reversibly form lithium-containing compounds; lithium metal; or a lithium alloy.
- the material capable of reversibly occluding or releasing lithium ions may be, for example, crystalline carbon, amorphous carbon, or a mixture thereof.
- a material capable of reversibly forming a lithium-containing compound by reacting with the lithium ion (Li + ) may be, for example, tin oxide, titanium nitrate, or silicon.
- the lithium alloy includes, for example, lithium (Li), sodium (Na), potassium (K), rubidium (Rb), cesium (Cs), francium (Fr), beryllium (Be), magnesium (Mg), It may be an alloy of a metal selected from the group consisting of calcium (Ca), strontium (Sr), barium (Ba), radium (Ra), aluminum (Al), and tin (Sn).
- the negative electrode active material may be lithium metal, and specifically, may be in the form of a lithium metal thin film or lithium metal powder.
- a method of forming the negative electrode active material layer is not particularly limited, and a method of forming a layer or film commonly used in the art may be used. For example, methods such as compression, coating, and deposition may be used. In addition, a case in which a lithium metal thin film is formed on a metal plate by initial charging after assembling a battery in a state in which the lithium thin film is not present on the negative electrode current collector is also included in the negative electrode of the present invention.
- the non-aqueous electrolyte composition of the present invention is as described above, and includes lithium ions, and is intended to cause an electrochemical oxidation or reduction reaction at the positive electrode and the negative electrode through the lithium ion.
- Injection of the non-aqueous electrolyte composition may be performed at an appropriate stage during the manufacturing process of the electrochemical device according to the manufacturing process and required physical properties of the final product. That is, it may be applied before assembling the electrochemical device or at the final stage of assembling the electrochemical device.
- a separator may be additionally included between the anode and cathode described above.
- the separator is for physically separating two electrodes in the secondary battery (particularly, a lithium-sulfur secondary battery) of the present invention, and is commonly used as a separator in a secondary battery (particularly, a lithium-sulfur secondary battery). It can be used without particular limitation, and in particular, it is preferable that the resistance to ion movement in the electrolyte composition is low and the impregnation (moisture) ability of the electrolyte composition is excellent.
- the separator may be made of a porous material, and the porous material may be any porous material commonly used in an electrochemical device, and for example, a porous film or a non-woven fabric may be used, but is not particularly limited thereto.
- porous membrane examples include polyolefin-based porous membranes.
- the polyolefin-based porous membrane is a membrane formed by using polyolefin-based polymers such as polyethylene (eg, high-density polyethylene, linear low-density polyethylene, low-density polyethylene, ultra-high molecular weight polyethylene, etc.), polypropylene, polybutylene, and polypentene, respectively, or these A membrane formed from a mixed polymer may be exemplified.
- the nonwoven fabric includes, for example, polyethyleneterephthalate, polybutyleneterephthalate, polyester, polyacetal, polyamide, and polycarbonate. ), polyimide, polyetheretherketone, polyethersulfone, polyphenyleneoxide, polyphenylenesulfide, and polyethylenenaphthalate, respectively, alone and a nonwoven fabric formed using a nonwoven fabric, or a nonwoven fabric formed of a polymer obtained by mixing them.
- the structure of the nonwoven fabric may be a spunbond nonwoven fabric or a melt blown nonwoven fabric composed of long fibers.
- the thickness of the porous material is not particularly limited, but may be 1 to 100 ⁇ m, preferably 5 to 50 ⁇ m.
- the size and porosity of pores present in the porous material are not particularly limited, but may be 0.001 to 50 ⁇ m and 10 to 95%, respectively.
- a secondary battery (particularly, a lithium-sulfur secondary battery) according to the present invention may be manufactured by lamination, stack, and folding processes of a separator and an electrode in addition to a general process of winding.
- the shape of the secondary battery is not particularly limited and may be manufactured in various shapes such as a cylindrical shape, a stacked shape, and a coin shape.
- the inside of the reactor was substituted with nitrogen and/or vacuum was reduced.
- the temperature inside the reactor is cooled to 60° C. to 90° C., and residual by-products are removed to obtain 362 g of a transparent liquid addition reaction product.
- 551 g of a transparent liquid addition reaction product was obtained by performing the same method as in Preparation Example A1, except that the second amount of ethylene oxide was changed from 132 g to 352 g.
- the target compound ((4aR,5R,7aR)-5-[(2S)-1,4-dioxan-2-yl]-2,3,4a from dianhydrosugar hexitol-ethylene glycol
- the reaction equation for the formation of ,5,7,7a-hexahydrofuro[3,4-b][1,4]dioxine is as follows:
- Example A1 Preparation of target compound using addition reaction product of Preparation Example A1
- Example A2 Preparation of the target compound using the addition reaction product of Preparation Example A2
- reaction formula for forming the target compound of Formula 3-1 (5-(methoxymethyl)hexahydrofuro[3,4-b][1,4]dioxine) from monohydroxy furodioxine is as follows: same:
- Example A4 Except for using 120 g of 2,2,2-trifluoroethyl p-toluenesulfonate instead of 90 g of methyl iodide, the same method as in Example A4 was carried out 82 g of the target compound of Formula 3-2 (5-((2,2,2-trifluoroethoxy)methyl)hexahydrofuro[3,4-b][1,4]dioxine) was obtained.
- Example B1 Preparation of an electrolyte composition containing 1 part by weight of LiNO 3 as an additive and 2 parts by weight of the target compound obtained in Example A1
- a non-aqueous electrolyte solvent composed of 1,2-dimethoxyethane and 1,3-dioxolane (volume ratio 50:50) and an electrolyte solution containing 1.0 M LiN(CF 3 SO 2 ) 2 , a total weight of 100 weight of the electrolyte composition 10 mL of an electrolyte composition was prepared by mixing 1 part by weight of LiNO 3 and 2 parts by weight of the target compound obtained in Example A1 as additives, based on parts.
- Example B2 Preparation of an electrolyte composition containing 4.5 parts by weight of LiNO 3 as an additive and 4.4 parts by weight of the target compound obtained in Example A2
- Example B3 Preparation of an electrolyte composition containing 1 part by weight of CH 3 NO 3 as an additive and 4.3 parts by weight of the target compound obtained in Example A3
- a non-aqueous electrolyte solvent composed of 1,2-dimethoxyethane and 1,3-dioxolane (volume ratio 50:50) and an electrolyte solution containing 1.0 M LiN(CF 3 SO 2 ) 2 , a total weight of 100 weight of the electrolyte composition 10 mL of an electrolyte composition was prepared by mixing 1.0 parts by weight of CH 3 NO 3 and 4.3 parts by weight of the target compound obtained in Example A3 as additives, based on parts.
- Example B4 Preparation of an electrolyte composition containing 0.5 parts by weight of LiNO 2 as an additive and 0.7 parts by weight of the object obtained in Example A1
- Example B5 Preparation of an electrolyte composition containing 1 part by weight of LiNO 3 as an additive and 2 parts by weight of the target compound obtained in Example A1
- Example B6 Preparation of an electrolyte composition containing 1 part by weight of LiNO 3 as an additive and 2 parts by weight of the target compound obtained in Example A1
- Example B7 Preparation of an electrolyte composition containing 1 part by weight of LiNO 3 as an additive and 2 parts by weight of the target compound obtained in Example A4
- a non-aqueous electrolyte solvent composed of 1,2-dimethoxyethane and 1,3-dioxolane (volume ratio 50:50) and an electrolyte solution containing 1.0 M LiN(CF 3 SO 2 ) 2 , a total weight of 100 weight of the electrolyte composition 10 mL of an electrolyte composition was prepared by mixing 1 part by weight of LiNO 3 and 2 parts by weight of the target compound obtained in Example A4 as additives, based on parts.
- Example B8 Preparation of an electrolyte composition containing 1 part by weight of LiNO 3 as an additive and 2 parts by weight of the target compound obtained in Example A5
- a non-aqueous electrolyte solvent composed of 1,2-dimethoxyethane and 1,3-dioxolane (volume ratio 50:50) and an electrolyte solution containing 1.0 M LiN(CF 3 SO 2 ) 2 , a total weight of 100 weight of the electrolyte composition 10 mL of an electrolyte composition was prepared by mixing 1 part by weight of LiNO 3 and 2 parts by weight of the target compound obtained in Example A5 as additives, based on parts.
- Example B9 Preparation of an electrolyte composition containing 1 part by weight of LiNO 3 as an additive and 2 parts by weight of the target compound obtained in Example A6
- a non-aqueous electrolyte solvent composed of 1,2-dimethoxyethane and 1,3-dioxolane (volume ratio 50:50) and an electrolyte solution containing 1.0 M LiN(CF 3 SO 2 ) 2 , a total weight of 100 weight of the electrolyte composition 10 mL of an electrolyte composition was prepared by mixing 1 part by weight of LiNO 3 and 2 parts by weight of the target compound obtained in Example A6 as additives, based on parts.
- Example B10 Preparation of an electrolyte composition containing 1 part by weight of LiNO 3 as an additive and 2 parts by weight of the target compound obtained in Example A7
- a non-aqueous electrolyte solvent composed of 1,2-dimethoxyethane and 1,3-dioxolane (volume ratio 50:50) and an electrolyte solution containing 1.0 M LiN(CF 3 SO 2 ) 2 , a total weight of 100 weight of the electrolyte composition 10 mL of an electrolyte composition was prepared by mixing 1 part by weight of LiNO 3 and 2 parts by weight of the target compound obtained in Example A7 as an additive, based on parts.
- Comparative Example B1 Preparation of an electrolyte composition containing only 1 part by weight of LiNO 3 as an additive
- a non-aqueous electrolyte solvent composed of 1,2-dimethoxyethane and 1,3-dioxolane (volume ratio 50:50) and an electrolyte solution containing 1.0 M LiN(CF 3 SO 2 ) 2 , a total weight of 100 weight of the electrolyte composition
- an electrolyte solution containing 1.0 M LiN(CF 3 SO 2 ) 2 a total weight of 100 weight of the electrolyte composition
- Comparative Example B2 Preparation of an electrolyte composition containing 0.09 parts by weight of additives (0.04 parts by weight of LiNO 3 + 0.05 parts by weight of the target compound obtained in Example A1)
- a non-aqueous electrolyte solvent composed of 1,2-dimethoxyethane and 1,3-dioxolane (volume ratio 50:50) and an electrolyte solution containing 1.0 M LiN(CF 3 SO 2 ) 2 , a total weight of 100 weight of the electrolyte composition 10 mL of an electrolyte composition was prepared by mixing 0.04 parts by weight of LiNO 3 and 0.05 parts by weight of the target compound obtained in Example A1 as additives, based on parts.
- Comparative Example B3 Preparation of an electrolyte composition containing 10.1 parts by weight of additives (5.5 parts by weight of LiNO 3 + 4.6 parts by weight of the target compound obtained in Example A1)
- a non-aqueous electrolyte solvent composed of 1,2-dimethoxyethane and 1,3-dioxolane (volume ratio 50:50) and an electrolyte solution containing 1.0 M LiN(CF 3 SO 2 ) 2 , a total weight of 100 weight of the electrolyte composition 10 mL of an electrolyte composition was prepared by mixing 5.5 parts by weight of LiNO 3 and 4.6 parts by weight of the target compound obtained in Example A1 as additives, based on parts.
- Comparative Example B4 Preparation of an electrolyte composition containing 0.09 parts by weight of additives (0.04 parts by weight of LiNO 3 + 0.05 parts by weight of the target compound obtained in Example A4)
- a non-aqueous electrolyte solvent composed of 1,2-dimethoxyethane and 1,3-dioxolane (volume ratio 50:50) and an electrolyte solution containing 1.0 M LiN(CF 3 SO 2 ) 2 , a total weight of 100 weight of the electrolyte composition 10 mL of an electrolyte composition was prepared by mixing 0.04 parts by weight of LiNO 3 and 0.05 parts by weight of the target compound obtained in Example A4 as additives, based on parts.
- Comparative Example B5 Preparation of an electrolyte composition containing 10.1 parts by weight of additives (5.5 parts by weight of LiNO 3 + 4.6 parts by weight of the target compound obtained in Example A5)
- a non-aqueous electrolyte solvent composed of 1,2-dimethoxyethane and 1,3-dioxolane (volume ratio 50:50) and an electrolyte solution containing 1.0 M LiN(CF 3 SO 2 ) 2 , a total weight of 100 weight of the electrolyte composition 10 mL of an electrolyte composition was prepared by mixing 5.5 parts by weight of LiNO 3 and 4.6 parts by weight of the target compound obtained in Example A5 as additives, based on parts.
- Comparative Example B6 Preparation of an electrolyte composition containing 0.09 parts by weight of additives (0.04 parts by weight of LiNO 3 + 0.05 parts by weight of the target compound obtained in Example A6)
- a non-aqueous electrolyte solvent composed of 1,2-dimethoxyethane and 1,3-dioxolane (volume ratio 50:50) and an electrolyte solution containing 1.0 M LiN(CF 3 SO 2 ) 2 , a total weight of 100 weight of the electrolyte composition 10 mL of an electrolyte composition was prepared by mixing 0.04 parts by weight of LiNO 3 and 0.05 parts by weight of the target compound obtained in Example A6 as additives, based on parts.
- Comparative Example B7 Preparation of an electrolyte composition containing 10.1 parts by weight of additives (5.5 parts by weight of LiNO 3 + 4.6 parts by weight of the target compound obtained in Example A7)
- a non-aqueous electrolyte solvent composed of 1,2-dimethoxyethane and 1,3-dioxolane (volume ratio 50:50) and an electrolyte solution containing 1.0 M LiN(CF 3 SO 2 ) 2 , a total weight of 100 weight of the electrolyte composition 10 mL of an electrolyte composition was prepared by mixing 5.5 parts by weight of LiNO 3 and 4.6 parts by weight of the target compound obtained in Example A7 as additives, based on parts.
- a composition for forming a positive electrode active material layer was prepared by mixing 65 parts by weight of sulfur, 25 parts by weight of carbon black, and 10 parts by weight of polyethylene oxide with acetonitrile. At this time, the total sum of sulfur, carbon black and polyethylene oxide was 100 parts by weight.
- a cathode was prepared by coating the composition for forming a cathode active material layer on an aluminum current collector and drying the same. In addition, lithium metal having a thickness of 450 ⁇ m was used as an anode.
- the life retention rate (capacity retention rate) was very high at 90.0% or more.
- the life retention rate was poor at 64.2%, and the compound of Formula 1 of the present invention (specifically, Formulas 2 to 4
- the life retention rate was poor at less than 70%
- the compound of Formula 1 of the present invention Specifically, in the case of secondary batteries using the electrolyte compositions of Comparative Examples B3, B5, and B7 using more additives including the compounds of Formulas 2 to 4 than the content defined in the present invention, the life retention rate was very low as less than 60%. It was poor.
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Abstract
Description
Claims (15)
- 하기 화학식 1로 표시되는 화합물:[화학식 1]여기서, R1 및 R2는 각각 독립적으로, 수소 원자, 할로겐 원자, 치환 또는 비치환된 C1-C30 알킬기, 치환 또는 비치환된 C2-C30 알케닐기, 치환 또는 비치환된 C2-C30 알키닐기, 치환 또는 비치환된 C1-C30 알콕시기, 치환 또는 비치환된 C3-C30 시클로알킬기, 치환 또는 비치환된 C1-C30 알킬렌-O-C1-C30 알킬기, 치환 또는 비치환된 C3-C30 헤테로시클로알킬기, 치환 또는 비치환된 C6-C60 아릴기, 치환 또는 비치환된 C1-C60 헤테로아릴기, 치환 또는 비치환된 C7-C60 아르알킬기, 치환 또는 비치환된 C6-C60 아릴옥시기, 및 치환 또는 비치환된 C6-C60 아릴티오기로 이루어진 군으로부터 선택되나, 단, R1 및 R2 중 적어도 하나는 수소 원자가 아니다.
- 제4항에 있어서, 이무수당 헥시톨-에틸렌 글리콜은 이무수당 헥시톨과 에틸렌 옥사이드를 부가 반응시켜 제조된 것인, 방법.
- 제5항에 있어서, 이무수당 헥시톨과 에틸렌 옥사이드의 부가 반응은, 이무수당 헥시톨 1몰을 기준으로, 2몰 이상의 에틸렌 옥사이드를 사용하여 수행되는, 방법.
- 제4항에 있어서, 산 촉매는 황산, 염산, 브롬산, 인산, 메탄술폰산, 벤젠술폰산, 파라톨루엔술폰산 또는 이들의 조합으로부터 선택되는 것인, 방법.
- 제8항에 있어서, 알킬화제는 화학식 R-X(여기서, R은 치환 또는 비치환된 C1-C30 알킬기이고, X는 할로겐 원자이다)를 갖는 알킬 할라이드, 치환 또는 비치환된 C1-C30 알킬기를 갖는 방향족 설포네이트, 또는 이들의 조합으로부터 선택되는 것인, 방법.
- 제8항에 있어서, 염기 촉매는 무기 염기 촉매, 유기 염기 촉매 또는 이들의 조합으로부터 선택되는 것인, 방법.
- 하기 화학식 1로 표시되는 화합물을 포함하는 전해질 첨가제:[화학식 1]여기서, R1 및 R2는 각각 독립적으로, 수소 원자, 할로겐 원자, 치환 또는 비치환된 C1-C30 알킬기, 치환 또는 비치환된 C2-C30 알케닐기, 치환 또는 비치환된 C2-C30 알키닐기, 치환 또는 비치환된 C1-C30 알콕시기, 치환 또는 비치환된 C3-C30 시클로알킬기, 치환 또는 비치환된 C1-C30 알킬렌-O-C1-C30 알킬기, 치환 또는 비치환된 C3-C30 헤테로시클로알킬기, 치환 또는 비치환된 C6-C60 아릴기, 치환 또는 비치환된 C1-C60 헤테로아릴기, 치환 또는 비치환된 C7-C60 아르알킬기, 치환 또는 비치환된 C6-C60 아릴옥시기, 및 치환 또는 비치환된 C6-C60 아릴티오기로 이루어진 군으로부터 선택되나, 단, R1 및 R2 중 적어도 하나는 수소 원자가 아니다.
- 제11항에 있어서, (아)질산계 화합물을 추가로 포함하는, 전해질 첨가제.
- 비수계 전해질 용매; 리튬 염; 및 제11항 또는 제12항의 전해질 첨가제;를 포함하고, 상기 전해질 첨가제의 함량이 전해질 조성물 총 100 중량부 기준으로, 0.1 내지 10 중량부인, 비수계 전해질 조성물.
- 양극; 음극; 분리 막; 및 제13항의 비수계 전해질 조성물;을 포함하는, 이차전지.
- 제14항에 있어서, 리튬-황 이차전지인, 이차전지.
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KR102244915B1 (ko) | 2018-09-12 | 2021-04-26 | 주식회사 엘지화학 | 황-탄소 복합체, 이의 제조방법 및 이를 포함하는 리튬 이차전지 |
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- 2022-10-05 JP JP2024520860A patent/JP2024537169A/ja active Pending
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JP2000243438A (ja) * | 1999-02-22 | 2000-09-08 | Sanyo Electric Co Ltd | 非水電解質電池 |
DE102004029774A1 (de) * | 2004-06-21 | 2006-01-05 | Basf Ag | 3,4-Alkylendioxy-2,5-dialkoxy-tetrahydrofurane bzw, 3,4-Arylendioxy-2,5-dialkoxytetrahydrofurane sowie Verfahren zu deren Herstellung |
KR101481234B1 (ko) | 2012-12-07 | 2015-01-09 | 현대자동차주식회사 | 바인더로 전처리된 유황복합분말을 사용하는 유황 전극, 및 이를 이용한 리튬황 배터리 시스템 |
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KR102244915B1 (ko) | 2018-09-12 | 2021-04-26 | 주식회사 엘지화학 | 황-탄소 복합체, 이의 제조방법 및 이를 포함하는 리튬 이차전지 |
KR20200105242A (ko) * | 2019-02-28 | 2020-09-07 | 동우 화인켐 주식회사 | 화합물, 이를 포함하는 이차전지용 전해액 및 이차전지 |
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