KR102256487B1 - 이차전지용 고분자 전해질 및 이를 포함하는 리튬 이차전지 - Google Patents
이차전지용 고분자 전해질 및 이를 포함하는 리튬 이차전지 Download PDFInfo
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- KR102256487B1 KR102256487B1 KR1020170086056A KR20170086056A KR102256487B1 KR 102256487 B1 KR102256487 B1 KR 102256487B1 KR 1020170086056 A KR1020170086056 A KR 1020170086056A KR 20170086056 A KR20170086056 A KR 20170086056A KR 102256487 B1 KR102256487 B1 KR 102256487B1
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- polymer electrolyte
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- secondary battery
- polymer
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- 239000005518 polymer electrolyte Substances 0.000 title claims abstract description 129
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 27
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- 229920000642 polymer Polymers 0.000 claims abstract description 67
- 239000002019 doping agent Substances 0.000 claims abstract description 7
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- 239000000126 substance Substances 0.000 claims description 25
- 229910003002 lithium salt Inorganic materials 0.000 claims description 22
- 159000000002 lithium salts Chemical class 0.000 claims description 22
- 238000000034 method Methods 0.000 claims description 20
- 239000002608 ionic liquid Substances 0.000 claims description 19
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- 229910052799 carbon Inorganic materials 0.000 claims description 9
- 150000001875 compounds Chemical class 0.000 claims description 7
- LRESCJAINPKJTO-UHFFFAOYSA-N bis(trifluoromethylsulfonyl)azanide;1-ethyl-3-methylimidazol-3-ium Chemical compound CCN1C=C[N+](C)=C1.FC(F)(F)S(=O)(=O)[N-]S(=O)(=O)C(F)(F)F LRESCJAINPKJTO-UHFFFAOYSA-N 0.000 claims description 6
- ZXMGHDIOOHOAAE-UHFFFAOYSA-N 1,1,1-trifluoro-n-(trifluoromethylsulfonyl)methanesulfonamide Chemical compound FC(F)(F)S(=O)(=O)NS(=O)(=O)C(F)(F)F ZXMGHDIOOHOAAE-UHFFFAOYSA-N 0.000 claims description 5
- ANFWGAAJBJPAHX-UHFFFAOYSA-N bis(fluorosulfonyl)azanide;1-ethyl-3-methylimidazol-3-ium Chemical compound CC[N+]=1C=CN(C)C=1.FS(=O)(=O)[N-]S(F)(=O)=O ANFWGAAJBJPAHX-UHFFFAOYSA-N 0.000 claims description 4
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- WUFQNPMBKMKEHN-UHFFFAOYSA-N bis(trifluoromethylsulfonyl)azanide;diethyl-(2-methoxyethyl)-methylazanium Chemical compound CC[N+](C)(CC)CCOC.FC(F)(F)S(=O)(=O)[N-]S(=O)(=O)C(F)(F)F WUFQNPMBKMKEHN-UHFFFAOYSA-N 0.000 claims description 3
- QWNFEDACBXJNSI-UHFFFAOYSA-N diethyl(methyl)azanium;trifluoromethanesulfonate Chemical compound CC[NH+](C)CC.[O-]S(=O)(=O)C(F)(F)F QWNFEDACBXJNSI-UHFFFAOYSA-N 0.000 claims description 3
- KDFUZGIURBWOQI-UHFFFAOYSA-N dimethyl(propyl)azanium trifluoromethanesulfonate Chemical compound CCC[NH+](C)C.[O-]S(=O)(=O)C(F)(F)F KDFUZGIURBWOQI-UHFFFAOYSA-N 0.000 claims description 3
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- 150000002367 halogens Chemical class 0.000 description 1
- 229920001519 homopolymer Polymers 0.000 description 1
- YAMHXTCMCPHKLN-UHFFFAOYSA-N imidazolidin-2-one Chemical compound O=C1NCCN1 YAMHXTCMCPHKLN-UHFFFAOYSA-N 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
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- 238000004502 linear sweep voltammetry Methods 0.000 description 1
- 239000001989 lithium alloy Substances 0.000 description 1
- 229940006487 lithium cation Drugs 0.000 description 1
- RSNHXDVSISOZOB-UHFFFAOYSA-N lithium nickel Chemical compound [Li].[Ni] RSNHXDVSISOZOB-UHFFFAOYSA-N 0.000 description 1
- VGYDTVNNDKLMHX-UHFFFAOYSA-N lithium;manganese;nickel;oxocobalt Chemical compound [Li].[Mn].[Ni].[Co]=O VGYDTVNNDKLMHX-UHFFFAOYSA-N 0.000 description 1
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- 229910052748 manganese Inorganic materials 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
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- 239000004627 regenerated cellulose Substances 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000013112 stability test Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 125000001424 substituent group Chemical group 0.000 description 1
- HXJUTPCZVOIRIF-UHFFFAOYSA-N sulfolane Chemical compound O=S1(=O)CCCC1 HXJUTPCZVOIRIF-UHFFFAOYSA-N 0.000 description 1
- 125000001273 sulfonato group Chemical group [O-]S(*)(=O)=O 0.000 description 1
- 125000000472 sulfonyl group Chemical group *S(*)(=O)=O 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 229910052723 transition metal Inorganic materials 0.000 description 1
- YFNKIDBQEZZDLK-UHFFFAOYSA-N triglyme Chemical compound COCCOCCOCCOC YFNKIDBQEZZDLK-UHFFFAOYSA-N 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
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Abstract
Description
이온전도도 (S/cm) | |
실시예 1 | 2.2 × 10-6 |
실시예 2 | 1.5 × 10-6 |
실시예 3 | 2.1 × 10-6 |
실시예 4 | 1.8 × 10-6 |
실시예 5 | 6.3 × 10-6 |
실시예 6 | 4.3 × 10-6 |
실시예 7 | 5.9 × 10-6 |
실시예 8 | 5.0 × 10-6 |
실시예 9 | 3.1 × 10-5 |
실시예 10 | 2.3 × 10-5 |
실시예 11 | 3.6 × 10-6 |
실시예 12 | 2.6 × 10-6 |
실시예 13 | 6.3 × 10-7 |
실시예 14 | 5.4 × 10-7 |
비교예 1 | 7.8 × 10-9 |
비교예 2 | 2.0 × 10-9 |
비교예 3 | 1.4 × 10-9 |
비교예 4 | 2.4 × 10-6 |
산화 안전성(V) @ 60℃ | |
실시예 1 | 6V~ |
실시예 5 | 6V~ |
실시예 9 | 6V~ |
실시예 11 | 6V~ |
비교예 1 | 5.8V~ |
비교예 4 | 5.5V~ |
Claims (15)
- 하기 화학식 1 또는 화학식 2로 표시되는 폴리머; 및
도펀트(dopant)로서 이중 결합을 적어도 하나 이상 가지는 전자 수용체 (electron-acceptor)를 포함하는 것인 이차전지용 고분자 전해질:
[화학식 1]
[화학식 2]
상기 R 및 R5는 C 또는 S이고,
R1 및 R6은 또는 이며,
이때, R9는 -C(CF3)2- 이고,
R2 및 R7은 이며,
R3는 -S(CF2)2SO3 -Li+ 이고,
R4는 이며, 이때, R10은 -C(CF3)2- 이고,
R8은 이고,
o 및 o1은 1 또는 2이며,
p, p1, q, q1, r 및 s는 0 또는 1이며,
상기 n : m은 95:5 내지 5:95 몰 비이고, n ': m'은 95:5 내지 5:95 몰 비이다.
- 청구항 1에 있어서,
상기 화학식 1에서, 상기 n : m의 비율은 40:60 내지 60:40 몰 비이고,
상기 화학식 2에서, 상기 n':m'의 비율은 40:60 내지 60:40 몰 비인 것인 이차전지용 고분자 전해질.
- 청구항 1에 있어서,
상기 화학식 1 또는 화학식 2로 표시되는 폴리머의 중량평균분자량(Mw)은 5,000 g/mol 내지 1,500,000 g/mol 인 것인 이차전지용 고분자 전해질.
- 청구항 1에 있어서,
상기 폴리머:전자 수용체의 몰 비는 1:0.01 내지 1:500인 것인 이차전지용 고분자 전해질.
- 청구항 1에 있어서,
상기 이차전지용 고분자 전해질은 리튬염을 추가로 포함하는 것인 이차전지용 고분자 전해질.
- 청구항 7에 있어서,
상기 리튬염은 양이온으로 Li+를 포함하고,
음이온으로는 F-, Cl-, Br-, I-, NO3 -, N(CN)2 -, BF4 -, ClO4 -, AlO4 -, AlCl4 -, PF6 -, SbF6 -, AsF6 -, BF2C2O4 -, B(C2O4)2 - , (CF3)2PF4 -, (CF3)3PF3 -, (CF3)4PF2 -, (CF3)5PF-, (CF3)6P-, CF3SO3 -, C4F9SO3 -, CF3CF2SO3 -, (CF3SO2)2N-, (FSO2)2N-, CF3CF2(CF3)2CO-, (CF3SO2)2N-, (SF5)3C-, (CF3SO2)3C-, CF3(CF2)7SO3 -, CF3CO2 -, CH3CO2 -, SCN- 및 (CF3CF2SO2)2N-로 이루어진 군으로부터 선택된 적어도 어느 하나를 포함하는 것인 이차전지용 고분자 전해질.
- 청구항 7에 있어서,
상기 리튬염은 이차전지용 고분자 전해질 중에 0.5M 내지 5M 농도로 포함되는 것인 이차전지용 고분자 전해질.
- 청구항 1에 있어서,
상기 고분자 전해질은 자립형 (free-standing) 고체 고분자 전해질인 것인 이차전지용 고분자 전해질.
- 청구항 1에 있어서,
상기 고분자 전해질은 이온성 액체를 추가로 포함하는 것인 이차전지용 고분자 전해질.
- 청구항 11에 있어서,
상기 이온성 액체는 디에틸메틸암모늄 트리플루오로메탄술포네이트, 디메틸프로필암모늄 트리플루오로메탄술포네이트, N,N-디에틸-N-메틸-N-(2-메톡시에틸)암모늄 비스(트리플루오로메탄설포닐)이미드, N-메틸-N-프로필피페리듐 비스(트리플루오로메탄설포닐)이미드, 1-에틸-3-메틸 이미다졸륨-비스(트리플루오로메틸설포닐)이미드, 1-에틸-3-메틸 이미다졸륨 비스(플루오로설포닐)이미드, N-메틸-N-프로필 피롤리듐 비스(플루오로설포닐)이미드, N-메틸-N-프로필 피롤리듐 비스(트리플루오로메탄설포닐)이미드, N-부틸 -N-메틸 피롤리듐 비스(트리플루오로메탄설포닐)이미드 및 메틸프로필피페리듐트리플루오로 메탄설포닐이미드로 이루어진 군으로부터 선택되는 하나 이상을 포함하는 것인 이차전지용 고분자 전해질.
- 청구항 11에 있어서,
상기 이온성 액체는 고분자 전해질의 전체 중량을 기준으로 0.01 중량% 내지 50 중량%로 포함되는 것인 이차전지용 고분자 전해질.
- 청구항 11에 있어서,
상기 고분자 전해질은 고체 고분자-액체 혼성 전해질인 것인 이차전지용 고분자 전해질.
- 양극, 음극 및 상기 양극 및 음극 중 적어도 일면에 형성된 고분자 전해질을 포함하며,
상기 고분자 전해질은 청구항 1의 이차전지용 고분자 전해질을 포함하는 것인 리튬 이차전지.
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KR1020170086056A KR102256487B1 (ko) | 2017-07-06 | 2017-07-06 | 이차전지용 고분자 전해질 및 이를 포함하는 리튬 이차전지 |
JP2019568618A JP6827568B2 (ja) | 2017-07-06 | 2018-07-03 | 二次電池用高分子電解質およびこれを含むリチウム二次電池 |
PL18828572.0T PL3627608T3 (pl) | 2017-07-06 | 2018-07-03 | Elektrolit polimerowy do baterii akumulatorowej i zawierająca go litowa bateria akumulatorowa |
EP18828572.0A EP3627608B1 (en) | 2017-07-06 | 2018-07-03 | Polymer electrolyte for secondary battery and lithium secondary battery comprising the same |
HUE18828572A HUE062749T2 (hu) | 2017-07-06 | 2018-07-03 | Polimer elektrolit szekunder akkumulátorhoz és az azt tartalmazó lítium szekunder akkumulátor |
US16/468,589 US11114692B2 (en) | 2017-07-06 | 2018-07-03 | Polymer electrolyte for secondary battery and lithium secondary battery comprising the same |
CN201880042079.0A CN110870124B (zh) | 2017-07-06 | 2018-07-03 | 用于二次电池的聚合物电解质和包括该聚合物电解质的锂二次电池 |
PCT/KR2018/007529 WO2019009594A1 (ko) | 2017-07-06 | 2018-07-03 | 이차전지용 고분자 전해질 및 이를 포함하는 리튬 이차전지 |
ES18828572T ES2958845T3 (es) | 2017-07-06 | 2018-07-03 | Electrolito polimérico para batería secundaria y batería secundaria de litio que comprende el mismo |
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EP (1) | EP3627608B1 (ko) |
JP (1) | JP6827568B2 (ko) |
KR (1) | KR102256487B1 (ko) |
CN (1) | CN110870124B (ko) |
ES (1) | ES2958845T3 (ko) |
HU (1) | HUE062749T2 (ko) |
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EP4055082B1 (en) * | 2019-11-08 | 2023-12-06 | Solvay Specialty Polymers USA, LLC. | Blend of polyarylether ketone copolymer |
CN113299997A (zh) * | 2021-05-20 | 2021-08-24 | 惠州亿纬锂能股份有限公司 | 一种用于金属锂电池的电解液及其制备方法和应用 |
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JP6191763B2 (ja) * | 2013-10-18 | 2017-09-06 | エルジー・ケム・リミテッド | 分離膜、リチウム−硫黄電池、電池モジュール、分離膜の製造方法、リチウム−硫黄電池の製造方法 |
WO2015065004A1 (ko) * | 2013-10-29 | 2015-05-07 | 주식회사 엘지화학 | 겔 폴리머 전해질 및 이를 포함하는 리튬 이차전지 |
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CN110870124A (zh) | 2020-03-06 |
US20200194832A1 (en) | 2020-06-18 |
US11114692B2 (en) | 2021-09-07 |
JP6827568B2 (ja) | 2021-02-10 |
KR20190005430A (ko) | 2019-01-16 |
ES2958845T3 (es) | 2024-02-15 |
HUE062749T2 (hu) | 2023-12-28 |
EP3627608B1 (en) | 2023-08-30 |
WO2019009594A1 (ko) | 2019-01-10 |
EP3627608A4 (en) | 2020-04-01 |
PL3627608T3 (pl) | 2023-12-11 |
CN110870124B (zh) | 2023-01-31 |
EP3627608A1 (en) | 2020-03-25 |
JP2020523757A (ja) | 2020-08-06 |
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