KR20220122018A - 리튬 이차전지 - Google Patents
리튬 이차전지 Download PDFInfo
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- KR20220122018A KR20220122018A KR1020210026115A KR20210026115A KR20220122018A KR 20220122018 A KR20220122018 A KR 20220122018A KR 1020210026115 A KR1020210026115 A KR 1020210026115A KR 20210026115 A KR20210026115 A KR 20210026115A KR 20220122018 A KR20220122018 A KR 20220122018A
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- H—ELECTRICITY
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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
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- 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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- 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
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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
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- H01M4/36—Selection of substances as active materials, active masses, active liquids
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- H—ELECTRICITY
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- H01M4/00—Electrodes
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- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/38—Selection of substances as active materials, active masses, active liquids of elements or alloys
- H01M4/40—Alloys based on alkali metals
- H01M4/405—Alloys based on lithium
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- H—ELECTRICITY
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- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/38—Selection of substances as active materials, active masses, active liquids of elements or alloys
- H01M4/46—Alloys based on magnesium or aluminium
- H01M4/466—Magnesium based
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- H—ELECTRICITY
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- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/58—Selection of substances as active materials, active masses, active liquids of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy; of polyanionic structures, e.g. phosphates, silicates or borates
- H01M4/581—Chalcogenides or intercalation compounds thereof
- H01M4/5815—Sulfides
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- H—ELECTRICITY
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- H01M4/36—Selection of substances as active materials, active masses, active liquids
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- H01M4/602—Polymers
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
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- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M2004/021—Physical characteristics, e.g. porosity, surface area
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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
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M2004/026—Electrodes composed of, or comprising, active material characterised by the polarity
- H01M2004/027—Negative electrodes
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- H—ELECTRICITY
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- H01M4/02—Electrodes composed of, or comprising, active material
- H01M2004/026—Electrodes composed of, or comprising, active material characterised by the polarity
- H01M2004/028—Positive electrodes
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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
- 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
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- 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
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- Condensed Matter Physics & Semiconductors (AREA)
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- Materials Engineering (AREA)
- Secondary Cells (AREA)
- Battery Electrode And Active Subsutance (AREA)
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Abstract
Description
도 2a 및 도 2b는 실시예 1 및 비교예 1 내지 5의 수명 특성을 나타낸 그래프이다.
도 3은 실시예 1 및 비교예 4의 음극 표면에 대한 광학 사진 및 3D 입체 사진이다.
도 4a 및 도 4b는 각각 실시예 1 및 비교예 4의 음극에 대한 단면 SEM(scanning electron microscope) 사진 및 EDS(Energy Dispersive X-ray Spectroscopy) 분석 결과를 나타낸 것이다.
| 음극 | 전해질 | 수명(cycle 수) (방전 용량 유지율 80% 기준) |
||||
| 음극 활물질 |
합금 원소 |
함량 | 용매 | |||
| wt% | at% | |||||
| 비교예 1 | Li | - | - | - | DOL/DME (5:5 (v/v)) | 31 |
| 비교예 2 | Li-Mg | Mg | 1 | 0.3 | DOL/DME (5:5 (v/v)) | 39 |
| 비교예 3 | Li | - | - | - | 2Me-F/DME (2:8 (v/v)) | 168 |
| 비교예 4 | Li-Al | Al | 1 | 0.26 | 2Me-F/DME (2:8 (v/v)) | 167 |
| 비교예 5 | Li-Zn | Zn | 5 | 0.56 | 2Me-F/DME (2:8 (v/v)) | 158 |
| 실시예 1 | Li-Mg | Mg | 1 | 0.3 | 2Me-F/DME (2:8 (v/v)) | 203 |
| 음극 활물질 |
방전 용량 유지율(%) | 음극 두께 | 음극 다공화율 (%) |
평균 거칠기 (㎛) |
최대 단차 (㎛) |
|||
| 구동 전 두께(㎛) | 구동 후 두께(㎛) | 두께 증가율(%) |
||||||
| 실시예 1 | Li-Mg 합금 | 91 | 100 | 180 | 80 | 29 | 4 | 28 |
| 비교예 4 | Li-Al 합금 | 82 | 100 | 219 | 119 | 38 | 19 | 81 |
Claims (8)
- 양극, 음극, 분리막 및 전해질을 포함하는 리튬 이차전지에 있어서,
상기 음극은 Li-Mg 합금을 포함하고,
상기 전해질은 퓨란계 용매, 리튬염 및 첨가제를 포함하는 것인, 리튬 이차전지. - 제1항에 있어서,
상기 Li-Mg 합금은, Mg가 0 중량% 초과 및 90 중량% 이하로 포함된 고용체(solid solution)인, 리튬 이차전지. - 제1항에 있어서,
상기 Li-Mg 합금은 호일(foil) 형태인 것인, 리튬 이차전지. - 제1항에 있어서,
상기 음극의 두께는 0 ㎛ 초과, 200 ㎛ 이하인, 리튬 이차전지. - 제1항에 있어서,
상기 퓨란계 유기용매는 퓨란(furan), 2-메틸퓨란(2-methylfuran), 3-메틸퓨란(3-methylfuran), 2-에틸퓨란(2-ethylfuran), 2-프로필퓨란(2-propylfuran), 2-뷰틸퓨란(2-butylfuran), 2,3-디메틸퓨란(2,3-dimethylfuran), 2,4-디메틸퓨란(2,4-dimethylfuran), 2,5-디메틸퓨란(2,5-dimethylfuran), 피란(pyran), 2-메틸피란(2-methylpyran), 3-메틸피란(3-methylpyran), 4-메틸피란(4-methylpyran), 벤조퓨란(benzofuran), 2-(2-니트로비닐)퓨란(2-(2-Nitrovinyl)furan, thiophene), 싸이오펜(thiophene), 2-메틸싸이오펜(2-methylthiophene), 2-에틸싸이오펜(2-ethylthiphene), 2-프로필싸이오펜(2-propylthiophene), 2-뷰틸싸이오펜(2-butylthiophene), 2,3-디메틸싸이오펜(2,3-dimethylthiophene), 2,4-디메틸싸이오펜(2,4-dimethylthiophene) 및 2,5-디메틸싸이오펜(2,5-dimethylthiophene)으로 이루어진 군으로부터 선택되는 1종 이상을 포함하는 것인, 리튬 이차전지. - 제1항에 있어서,
상기 리튬염은 LiFSI(lithium bis(fluorosulfonyl)imide), LiTFSI(lithium bis(trifluoromethanesulfonyyl)imide), LiCl, LiBr, LiI, LiClO4, LiBF4, LiB10Cl10, LiPF6, LiCF3SO3, LiCF3CO2, LiAsF6, LiSbF6, LiAlCl4, CH3SO3Li, CF3SO3Li, LiSCN, LiC(CF3SO2)3, (CF3SO2)2NLi, (FSO2)2NLi, 클로로 보란 리튬, 저급 지방족 카르본산 리튬, 4-페닐 붕산 리튬 및 리튬이미드로 이루어진 군에서 선택된 1종 이상을 포함하는 것인, 리튬 이차전지. - 제1항에 있어서,
상기 첨가제는 질산리튬(Li(NO3), lithium nitrate) 질산칼륨(KNO3), 질산세슘(CsNO3), 질산마그네슘(MgNO3), 질산바륨(BaNO3), 아질산칼륨(KNO2) 및 아질산세슘(CsNO2)로 이루어진 군에서 선택되는 1종 이상인 것인, 리튬 이차전지. - 제1항에 있어서,
상기 양극은 양극 활물질로서 무기 황, Li2Sn(n≥1), 디설파이드 화합물, 유기황 화합물 및 탄소-황 폴리머로 이루어진 군에서 선택되는 1종 이상을 포함하는 것인, 리튬 이차전지.
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020210026115A KR102799575B1 (ko) | 2021-02-26 | 2021-02-26 | 리튬 이차전지 |
| PCT/KR2022/002634 WO2022182117A1 (ko) | 2021-02-26 | 2022-02-23 | 리튬 이차전지 |
| EP22760033.5A EP4142010A4 (en) | 2021-02-26 | 2022-02-23 | LITHIUM SECONDARY BATTERY |
| CN202280004689.8A CN115699396A (zh) | 2021-02-26 | 2022-02-23 | 锂二次电池 |
| US17/928,911 US20230231120A1 (en) | 2021-02-26 | 2022-02-23 | Lithium secondary battery |
| JP2022580498A JP7645292B2 (ja) | 2021-02-26 | 2022-02-23 | リチウム二次電池 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020210026115A KR102799575B1 (ko) | 2021-02-26 | 2021-02-26 | 리튬 이차전지 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR20220122018A true KR20220122018A (ko) | 2022-09-02 |
| KR102799575B1 KR102799575B1 (ko) | 2025-04-22 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1020210026115A Active KR102799575B1 (ko) | 2021-02-26 | 2021-02-26 | 리튬 이차전지 |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20230231120A1 (ko) |
| EP (1) | EP4142010A4 (ko) |
| JP (1) | JP7645292B2 (ko) |
| KR (1) | KR102799575B1 (ko) |
| CN (1) | CN115699396A (ko) |
| WO (1) | WO2022182117A1 (ko) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20250139027A (ko) | 2024-03-14 | 2025-09-23 | 충남대학교산학협력단 | 리튬 이차전지용 리튬-마그네슘 합금 음극 및 이의 제조방법 |
| WO2025198437A1 (ko) * | 2024-03-18 | 2025-09-25 | 주식회사 엘지에너지솔루션 | 안전성이 향상된 리튬 이차전지 |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102893455B1 (ko) * | 2021-01-28 | 2025-12-03 | 주식회사 엘지에너지솔루션 | 리튬-황 전지용 전해액 및 이를 포함하는 리튬-황 전지 |
| KR20260026050A (ko) * | 2023-06-15 | 2026-02-25 | 라이텐, 인코포레이티드 | 리튬-황 배터리용 리튬 합금 애노드 |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2018519620A (ja) * | 2015-12-08 | 2018-07-19 | エルジー・ケム・リミテッド | 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 |
| KR20200007081A (ko) | 2017-06-09 | 2020-01-21 | 시온 파워 코퍼레이션 | 인-시튜 집전체 |
| WO2020124086A1 (en) * | 2018-12-14 | 2020-06-18 | Cuberg, Inc. | System for an ionic liquid-based electrolyte for high energy battery |
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| KR100358809B1 (ko) * | 2000-08-02 | 2002-10-25 | 삼성에스디아이 주식회사 | 빠른 전기화학 반응을 보이는 리튬-황 전지 |
| KR100570604B1 (ko) * | 2003-10-23 | 2006-04-12 | 삼성에스디아이 주식회사 | 리튬-설퍼 전지용 전해액 및 이를 포함하는 리튬-설퍼 전지 |
| US7316868B2 (en) * | 2004-02-11 | 2008-01-08 | Sion Power Corporation | Electrolytes for lithium-sulfur electrochemical cells |
| CN106784770A (zh) * | 2017-02-28 | 2017-05-31 | 南开大学 | 高镁含量的锂镁合金为负极的锂硫二次电池 |
| KR20190125740A (ko) * | 2018-04-30 | 2019-11-07 | 주식회사 엘지화학 | 리튬-황 전지용 전해액 및 이를 포함하는 리튬-황 전지 |
| KR102126252B1 (ko) * | 2018-11-23 | 2020-06-24 | 주식회사 엘지화학 | 리튬-황 전지용 전해액 및 이를 포함하는 리튬-황 전지 |
| WO2020105981A1 (ko) * | 2018-11-23 | 2020-05-28 | 주식회사 엘지화학 | 리튬-황 전지용 전해액 및 이를 포함하는 리튬-황 전지 |
-
2021
- 2021-02-26 KR KR1020210026115A patent/KR102799575B1/ko active Active
-
2022
- 2022-02-23 WO PCT/KR2022/002634 patent/WO2022182117A1/ko not_active Ceased
- 2022-02-23 US US17/928,911 patent/US20230231120A1/en active Pending
- 2022-02-23 JP JP2022580498A patent/JP7645292B2/ja active Active
- 2022-02-23 CN CN202280004689.8A patent/CN115699396A/zh active Pending
- 2022-02-23 EP EP22760033.5A patent/EP4142010A4/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2018519620A (ja) * | 2015-12-08 | 2018-07-19 | エルジー・ケム・リミテッド | 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 |
| KR20200007081A (ko) | 2017-06-09 | 2020-01-21 | 시온 파워 코퍼레이션 | 인-시튜 집전체 |
| WO2020124086A1 (en) * | 2018-12-14 | 2020-06-18 | Cuberg, Inc. | System for an ionic liquid-based electrolyte for high energy battery |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20250139027A (ko) | 2024-03-14 | 2025-09-23 | 충남대학교산학협력단 | 리튬 이차전지용 리튬-마그네슘 합금 음극 및 이의 제조방법 |
| WO2025198437A1 (ko) * | 2024-03-18 | 2025-09-25 | 주식회사 엘지에너지솔루션 | 안전성이 향상된 리튬 이차전지 |
Also Published As
| Publication number | Publication date |
|---|---|
| US20230231120A1 (en) | 2023-07-20 |
| JP2023532499A (ja) | 2023-07-28 |
| CN115699396A (zh) | 2023-02-03 |
| WO2022182117A1 (ko) | 2022-09-01 |
| KR102799575B1 (ko) | 2025-04-22 |
| JP7645292B2 (ja) | 2025-03-13 |
| EP4142010A1 (en) | 2023-03-01 |
| EP4142010A4 (en) | 2024-11-27 |
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