KR20180121411A - 양극, 이를 포함하는 이차 전지, 및 상기 양극의 제조 방법 - Google Patents
양극, 이를 포함하는 이차 전지, 및 상기 양극의 제조 방법 Download PDFInfo
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- KR20180121411A KR20180121411A KR1020180049220A KR20180049220A KR20180121411A KR 20180121411 A KR20180121411 A KR 20180121411A KR 1020180049220 A KR1020180049220 A KR 1020180049220A KR 20180049220 A KR20180049220 A KR 20180049220A KR 20180121411 A KR20180121411 A KR 20180121411A
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- dry
- active material
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- 229910002102 lithium manganese oxide Inorganic materials 0.000 description 1
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- VLXXBCXTUVRROQ-UHFFFAOYSA-N lithium;oxido-oxo-(oxomanganiooxy)manganese Chemical compound [Li+].[O-][Mn](=O)O[Mn]=O VLXXBCXTUVRROQ-UHFFFAOYSA-N 0.000 description 1
- URIIGZKXFBNRAU-UHFFFAOYSA-N lithium;oxonickel Chemical compound [Li].[Ni]=O URIIGZKXFBNRAU-UHFFFAOYSA-N 0.000 description 1
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Classifications
-
- 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
- H01M4/64—Carriers or collectors
- H01M4/66—Selection of materials
- H01M4/663—Selection of materials containing carbon or carbonaceous materials as conductive part, e.g. graphite, carbon fibres
-
- 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
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- H01M2/1022—
-
- H01M2/1072—
-
- 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
- H01M4/04—Processes of manufacture in general
-
- 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
- H01M4/04—Processes of manufacture in general
- H01M4/0402—Methods of deposition of the material
- H01M4/0404—Methods of deposition of the material by coating on electrode collectors
-
- 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
- H01M4/04—Processes of manufacture in general
- H01M4/043—Processes of manufacture in general involving compressing or compaction
- H01M4/0435—Rolling or calendering
-
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Abstract
Description
양극 접착력(gf/20mm) | 양극의 두께 편차(㎛) | |
실시예 1 | 65 | 4 |
실시예 2 | 84 | 3 |
실시예 3 | 115 | 2 |
실시예 4 | 56 | 5 |
비교예 1 | 15 | 7 |
비교예 2 | 23 | 6 |
비교예 3 | 21 | 6 |
비교예 4 | 17 | 6.5 |
용량 유지율(%) | |
실시예 5 | 80 |
실시예 6 | 82 |
실시예 7 | 81 |
실시예 8 | 77 |
비교예 5 | 70 |
비교예 6 | 73 |
비교예 7 | 75 |
비교예 8 | 73 |
Claims (15)
- 집전체, 및 상기 집전체 상에 배치된 양극 활물질층을 포함하며,
상기 양극 활물질층은 양극 활물질, 건조 도전재, 및 건조 바인더를 포함하고,
상기 건조 도전재는 탄소나노튜브 및 탄소 섬유 중 적어도 어느 하나이며,
두께 편차가 5㎛ 이하인 양극.
- 청구항 1에 있어서,
상기 양극의 전극 접착력은 35gf/20mm 내지 200gf/20mm인 양극.
- 청구항 1에 있어서,
상기 건조 도전재는 상기 양극 활물질층 전체 중량을 기준으로 1중량% 내지 10중량%로 포함되는 양극.
- 청구항 1의 양극;
음극;
상기 양극과 상기 음극 사이에 개재된 분리막; 및
전해질을 포함하는 이차 전지.
- 양극 활물질, 건조 도전재, 및 건조 바인더를 건식 혼합하여 혼합물을 제조하는 단계;
상기 혼합물에 고 전단력을 인가하는 단계;
집전체 상에 상기 혼합물을 배치시키는 단계; 및
상기 혼합물이 배치된 집전체를 압연하는 단계를 포함하며,
상기 건조 도전재는 탄소나노튜브 및 탄소 섬유 중 적어도 어느 하나이고,
상기 고 전단력은 50N 내지 1000N인 양극의 제조 방법.
- 청구항 5에 있어서,
상기 탄소나노튜브의 평균 길이는 1㎛ 내지 100㎛인 양극의 제조 방법.
- 청구항 5에 있어서,
상기 탄소나노튜브는 복수의 탄소나노튜브 단위체가 응집된 번들형 탄소나노튜브이며,
상기 탄소나노튜브의 단위체의 직경은 5nm 내지 100nm인 양극의 제조 방법.
- 청구항 5에 있어서,
상기 탄소 섬유의 평균 길이는 1㎛ 내지 50㎛인 양극의 제조 방법.
- 청구항 5에 있어서,
상기 탄소 섬유의 직경은 5nm 내지 500nm인 양극의 제조 방법.
- 청구항 5에 있어서,
상기 고 전단력을 인가하는 단계는 상기 혼합물을 전단 압축하여 고 전단력을 인가하는 것을 포함하는 양극의 제조 방법.
- 청구항 5에 있어서,
상기 혼합물을 배치시키는 단계는,
상기 혼합물을 스캐터링 방법으로 상기 집전체 상에 균일한 두께로 배치시키는 것을 포함하는 양극의 제조 방법.
- 청구항 5에 있어서,
상기 혼합물이 배치된 집전체를 압연하는 단계는,
상기 혼합물이 배치된 집전체를 벨트 위에 위치시키는 단계 및 상기 혼합물이 배치된 집전체를 롤을 통해 압연하는 단계를 포함하는 음극의 제조 방법.
- 청구항 12에 있어서,
상기 혼합물이 배치된 집전체를 벨트 위에 위치시키는 단계는,
상기 벨트를 50℃ 내지 100℃로 예열하는 것을 포함하는 음극의 제조 방법.
- 청구항 12에 있어서,
상기 혼합물이 배치된 집전체를 롤을 통해 압연하는 단계에 있어서,
상기 롤의 온도는 50℃ 내지 150℃인 음극의 제조 방법.
- 청구항 5에 있어서,
상기 건조 바인더는 폴리비닐리덴플루오라이드-헥사플루오로프로필렌 및 폴리테트라플루오로에틸렌 중 적어도 어느 하나인 양극의 제조 방법.
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US16/347,677 US11380899B2 (en) | 2017-04-28 | 2018-04-27 | Positive electrode, secondary battery including the same, and method for manufacturing using dry mixing at high shear force |
PCT/KR2018/004972 WO2018199702A1 (ko) | 2017-04-28 | 2018-04-27 | 양극, 이를 포함하는 이차 전지, 및 상기 양극의 제조 방법 |
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- 2018-04-27 EP EP23163615.0A patent/EP4220753A1/en active Pending
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WO2023136666A1 (ko) * | 2022-01-14 | 2023-07-20 | 주식회사 엘지화학 | 부착강화 조성물, 이를 포함하는 집전체, 상기 집전체를 포함하는 양극, 상기 양극의 제조방법 및 상기 양극을 포함하는 리튬 이차전지 |
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Publication number | Publication date |
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EP3609000A4 (en) | 2020-04-22 |
EP3609000A1 (en) | 2020-02-12 |
US11380899B2 (en) | 2022-07-05 |
ES2947366T3 (es) | 2023-08-07 |
PL3609000T3 (pl) | 2023-08-14 |
CN110546787B (zh) | 2022-08-19 |
EP4220753A1 (en) | 2023-08-02 |
KR102268081B1 (ko) | 2021-06-23 |
EP3609000B1 (en) | 2023-05-03 |
HUE062142T2 (hu) | 2023-09-28 |
CN110546787A (zh) | 2019-12-06 |
US20200044257A1 (en) | 2020-02-06 |
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