KR20190108792A - 전극 조립체 및 이를 포함하는 이차 전지 - Google Patents
전극 조립체 및 이를 포함하는 이차 전지 Download PDFInfo
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Abstract
Description
도 2는 일 실시예에 다른 리튬 이차 전지의 사시도이다.
도 3은 실시예 1에 따라 제조된 제1 기능층 표면을 측정한 SEM 사진이다.
도 4는 실시예 2에 따라 제조된 제1 기능층 표면을 측정한 SEM 사진이다.
도 5는 비교예 1에 따라 제조된 제1 기능층 표면을 측정한 SEM 사진이다.
도 6은 비교예 2에 따라 제조된 제1 기능층 표면을 측정한 SEM 사진이다.
| 구분 | 극판 저항 (Ω.m) |
| 실시예 3 | 0.62 |
| 실시예 4 | 0.59 |
| 실시예 5 | 1.52 |
| 실시예 6 | 1.93 |
| 비교예 3 | 15.23 |
| 비교예 4 | 659.71 |
| 비교예 5 | 38019.24 |
| 비교예 6 | 50591.424 |
| 구분 | No Event | Flame | Explosion | 합계 | 개선% |
| 비교예 7 | 0 | 0 | 8 | 8 | 0% |
| 비교예 8 | 0 | 2 | 6 | 8 | 0% |
| 비교예 9 | 1 | 4 | 3 | 8 | 12.5% |
| 실시예 6 | 3 | 2 | 3 | 8 | 37.5% |
110: 전극 조립체
11: 음극
12: 양극
13: 세퍼레이터
10: 제1 기능층
20: 제2 기능층
Claims (14)
- 음극;
양극;
상기 음극과 양극 사이에 개재되며, 상기 음극과 대면하는 제1 면 및 상기 양극과 대면하는 제2 면을 포함하는 세퍼레이터;
상기 제1 면에 위치하며, 섬유상 고분자 및 내열성 고분자를 포함하는 제1 기능층; 그리고
상기 제2 면에 위치하며, 무기 입자 및 유기 입자를 포함하는 제2 기능층;
을 포함하는 전극 조립체. - 제1항에 있어서,
상기 제1 기능층의 두께는,
1㎛ 내지 12㎛인 전극 조립체. - 제1항에 있어서,
상기 제1 기능층은 교차 방사 또는 동시 방사를 이용하여 형성된 네트워크 구조를 포함하는 전극 조립체. - 제1항에 있어서,
상기 제1 기능층은 통기도가 60% 내지 80% 범위인 전극 조립체. - 제1항에 있어서,
상기 섬유상 고분자는,
폴리에틸렌 (PE, Poly Ethylene), 폴리프로필렌 (PP, Polypropylene), 폴리메틸메타크릴레이트 (PMMA, Poly(methylemethacrylate)), 폴리비닐리덴 플루오로라이드 (PVdF, Polyvinylidene fluoride), 폴리비닐피롤리돈 (PVP, Polyvinyl pyrrolidone), 폴리설폰 (PSF, Polysulfone), 폴리스틸렌 (PS, Polystyrene), 폴리염화비닐 (PVC, Polyvinyl chloride), 및 폴리에틸렌 테레프탈레이트 (PET, Polyethylene terephthalate) 중 적어도 하나를 포함하는 전극 조립체. - 제1항에 있어서,
상기 내열성 고분자는,
폴리이미드 (PI, Polyimide), 폴리에테르이미드 (PEI, Polyetherimide), 폴리비닐알콜 (PVA, Polyvinyl Alcohol), 폴리아크릴니트릴 (PAN, Polyacrylonitrile), 폴리테트라플루오르에틸렌 (PTFE, Polytetrafluoroethylene), 폴리아미드이미드 (PAI, Polyamide-imide), 폴리에테르에테르케톤 (PEEK, Polyether ether ketone), 폴리에테르설폰 (PES, Polyether sulfone), 및 폴리페닐린설파이드 (PPS, Polyphenylene sulfide) 중 적어도 하나를 포함하는 전극 조립체. - 제1항에 있어서,
상기 섬유상 고분자 및 상기 내열성 고분자의 혼합 중량비는,
5 : 5 내지 8 : 2인 전극 조립체. - 제1항에 있어서,
상기 제2 기능층의 두께는,
2㎛ 내지 15㎛인 전극 조립체. - 제1항에 있어서,
상기 무기 입자는,
리튬망간계 산화물 및 리튬인산철계 산화물 중 적어도 하나를 포함하는 전극 조립체. - 제1항에 있어서,
상기 유기 입자는, 폴리에틸렌 왁스를 포함하는 전극 조립체. - 제1항에 있어서,
상기 유기 입자의 평균 입경은 0.5㎛ 내지 2㎛ 범위인 전극 조립체. - 제1항에 있어서,
상기 제2 기능층을 기준으로
상기 유기 입자의 함량은 5 중량% 내지 60 중량%인 전극 조립체. - 제1항에 있어서,
상기 세퍼레이터는,
폴리에틸렌, 폴리에틸렌, 폴리프로필렌, 폴리부틸렌, 폴리펜텐, 폴리테트라플루오로에틸렌, 폴리에스테르, 폴리아세탈, 폴리아미드, 폴리카보네이트, 폴리이미드, 폴리에테르이미드, 폴리비닐리덴플루오라이드, 폴리에테르에테르케톤, 폴리에테르설폰, 폴리페닐렌옥사이드, 폴리페닐렌설파이드로 및 폴리에틸렌나프탈렌 중 적어도 하나를 포함하는 기재, 또는 상기 기재 상에 코팅층을 포함하는 코팅 기재를 포함하는 전극 조립체. - 제1항 내지 제13항 중 어느 한 항에 따른 전극 조립체; 및
상기 전극 조립체를 수용하는 외장재를 포함하는 이차 전지.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020180030286A KR102235277B1 (ko) | 2018-03-15 | 2018-03-15 | 전극 조립체 및 이를 포함하는 이차 전지 |
| PCT/KR2019/002526 WO2019177296A1 (ko) | 2018-03-15 | 2019-03-05 | 전극 조립체 및 이를 포함하는 이차 전지 |
| CN201980019369.8A CN111868989A (zh) | 2018-03-15 | 2019-03-05 | 电极组件和包括其的可再充电电池 |
| US16/981,261 US20210057702A1 (en) | 2018-03-15 | 2019-03-05 | Electrode assembly and rechargeable battery including same |
| EP19767622.4A EP3767725A4 (en) | 2018-03-15 | 2019-03-05 | Electrode assembly and rechargeable battery including same |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020180030286A KR102235277B1 (ko) | 2018-03-15 | 2018-03-15 | 전극 조립체 및 이를 포함하는 이차 전지 |
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| Publication Number | Publication Date |
|---|---|
| KR20190108792A true KR20190108792A (ko) | 2019-09-25 |
| KR102235277B1 KR102235277B1 (ko) | 2021-04-01 |
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| Country | Link |
|---|---|
| US (1) | US20210057702A1 (ko) |
| EP (1) | EP3767725A4 (ko) |
| KR (1) | KR102235277B1 (ko) |
| CN (1) | CN111868989A (ko) |
| WO (1) | WO2019177296A1 (ko) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11837716B2 (en) | 2020-08-28 | 2023-12-05 | Samsung Sdi Co., Ltd. | Electrode assembly for rechargeable lithium battery, and rechargeable lithium battery including same |
| WO2023239074A1 (ko) * | 2022-06-07 | 2023-12-14 | 주식회사 엘지에너지솔루션 | 리튬 이차 전지 및 이의 제조 방법 |
| WO2024242400A1 (ko) * | 2023-05-23 | 2024-11-28 | 주식회사 엘지에너지솔루션 | 전극의 제조 방법, 이에 의해 제조된 전극 및 상기 전극을 포함하는 리튬 이차전지 |
| WO2025143872A1 (ko) * | 2023-12-27 | 2025-07-03 | 주식회사 엘지에너지솔루션 | 전극, 이를 포함하는 리튬 이차 전지 및 전지 팩 |
| EP4645411A4 (en) * | 2022-12-28 | 2026-04-22 | Panasonic Ip Man Co Ltd | SECONDARY BATTERY WITH NON-AQUEOUS ELECTROLYTE AND POSITIVE ELECTRODE USING THIS |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20210112573A (ko) * | 2020-03-05 | 2021-09-15 | 삼성에스디아이 주식회사 | 이차 전지 |
| CN112436179A (zh) * | 2020-12-07 | 2021-03-02 | 上汽大众汽车有限公司 | 一种高安全锂离子电池 |
| CN112531288B (zh) * | 2020-12-07 | 2022-11-08 | 安徽南都华拓新能源科技有限公司 | 阻燃型纳米纤维锂电池隔膜及其制备方法 |
| EP4401177A4 (en) * | 2021-09-10 | 2025-01-08 | Ningde Amperex Technology Limited | ADHESIVE MATERIAL AND ELECTROCHEMICAL DEVICE THEREOF |
| DE102024202393B4 (de) * | 2024-03-14 | 2025-10-02 | Volkswagen Aktiengesellschaft | Verfahren zur Herstellung eines Separators für eine Kraftfahrzeugbatterie und Separator |
| CN121215915B (zh) * | 2025-11-26 | 2026-02-13 | 江苏正力新能电池技术股份有限公司 | 电极组件及其制备方法、电池和用电装置 |
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| WO2017101819A1 (en) * | 2015-12-18 | 2017-06-22 | Byd Company Limited | Composite film, method of preparing the same and lithium battery having the same |
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| JP5888012B2 (ja) * | 2012-03-08 | 2016-03-16 | 日産自動車株式会社 | 非水電解質二次電池およびその製造方法 |
| CN104685670A (zh) * | 2012-09-27 | 2015-06-03 | 三洋电机株式会社 | 分隔件一体型电极以及非水电解质二次电池 |
| CN104377328B (zh) * | 2013-08-14 | 2019-09-13 | 三星Sdi株式会社 | 可再充电锂电池 |
| KR102108280B1 (ko) * | 2013-11-07 | 2020-05-07 | 삼성에스디아이 주식회사 | 리튬 이차 전지 |
| US10734627B2 (en) * | 2016-04-01 | 2020-08-04 | Lg Chen, Ltd. | Separator comprising an adhesion layer for an electrochemical device and an electrode assembly comprising the same |
| KR102464364B1 (ko) * | 2016-05-09 | 2022-11-08 | 삼성전자주식회사 | 리튬금속전지용 음극 및 이를 포함하는 리튬금속전지 |
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2018
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2019
- 2019-03-05 CN CN201980019369.8A patent/CN111868989A/zh active Pending
- 2019-03-05 EP EP19767622.4A patent/EP3767725A4/en active Pending
- 2019-03-05 US US16/981,261 patent/US20210057702A1/en active Pending
- 2019-03-05 WO PCT/KR2019/002526 patent/WO2019177296A1/ko not_active Ceased
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| JP2003045477A (ja) * | 2001-08-01 | 2003-02-14 | Toshiba Corp | アルカリ二次電池、ハイブリッドカー及び電気自動車 |
| WO2017101819A1 (en) * | 2015-12-18 | 2017-06-22 | Byd Company Limited | Composite film, method of preparing the same and lithium battery having the same |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US11837716B2 (en) | 2020-08-28 | 2023-12-05 | Samsung Sdi Co., Ltd. | Electrode assembly for rechargeable lithium battery, and rechargeable lithium battery including same |
| WO2023239074A1 (ko) * | 2022-06-07 | 2023-12-14 | 주식회사 엘지에너지솔루션 | 리튬 이차 전지 및 이의 제조 방법 |
| EP4645411A4 (en) * | 2022-12-28 | 2026-04-22 | Panasonic Ip Man Co Ltd | SECONDARY BATTERY WITH NON-AQUEOUS ELECTROLYTE AND POSITIVE ELECTRODE USING THIS |
| WO2024242400A1 (ko) * | 2023-05-23 | 2024-11-28 | 주식회사 엘지에너지솔루션 | 전극의 제조 방법, 이에 의해 제조된 전극 및 상기 전극을 포함하는 리튬 이차전지 |
| WO2025143872A1 (ko) * | 2023-12-27 | 2025-07-03 | 주식회사 엘지에너지솔루션 | 전극, 이를 포함하는 리튬 이차 전지 및 전지 팩 |
Also Published As
| Publication number | Publication date |
|---|---|
| EP3767725A4 (en) | 2021-12-29 |
| US20210057702A1 (en) | 2021-02-25 |
| EP3767725A1 (en) | 2021-01-20 |
| CN111868989A (zh) | 2020-10-30 |
| KR102235277B1 (ko) | 2021-04-01 |
| WO2019177296A1 (ko) | 2019-09-19 |
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