JP7192809B2 - 電極シートの製造方法 - Google Patents
電極シートの製造方法 Download PDFInfo
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- JP7192809B2 JP7192809B2 JP2020027028A JP2020027028A JP7192809B2 JP 7192809 B2 JP7192809 B2 JP 7192809B2 JP 2020027028 A JP2020027028 A JP 2020027028A JP 2020027028 A JP2020027028 A JP 2020027028A JP 7192809 B2 JP7192809 B2 JP 7192809B2
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- coating
- electrode mixture
- protective insulating
- coating material
- insulating layer
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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
- H01M4/64—Carriers or collectors
- H01M4/66—Selection of materials
- H01M4/661—Metal or alloys, e.g. alloy coatings
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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
- 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
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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
- 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
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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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/4235—Safety or regulating additives or arrangements in electrodes, separators or electrolyte
-
- 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
- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
- H01M4/139—Processes of manufacture
-
- 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
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/362—Composites
- H01M4/364—Composites as mixtures
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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
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/362—Composites
- H01M4/366—Composites as layered products
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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
- H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
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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
- H01M2004/028—Positive electrodes
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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
- 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
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Composite Materials (AREA)
- Battery Electrode And Active Subsutance (AREA)
- Connection Of Batteries Or Terminals (AREA)
Description
図3のW,実測値)を評価した。
電極合材層4用および保護絶縁層5用のペースト状の塗工材を以下の条件で作製した。(電極合材層4の塗工材)
電極活物質粉末:リチウムイオン2次電池の正極用のリチウム複合酸化物
添加剤:結着剤,増粘剤,導電剤
混練溶媒:NMP
固形分比率:60重量%
絶縁材:ベーマイト
添加剤:結着剤,増粘剤
混練溶媒:NMP
固形分比率:25重量%
集電箔8:アルミ箔(12μm厚)
搬送速度:50m/分
保護絶縁層5の狙い幅:3.5mm
塗工厚:下記表1を参照
炉内温度:160℃
炉内滞在時間:15秒
2 シム
3 シム
4 電極合材層
5 保護絶縁層
7 電極シート
8 集電箔
10 ダイ
11 ダイ
Claims (1)
- 集電箔とその上に隣接して配置されている電極合材層および保護絶縁層とを有する電極シートの製造方法であって,
電極合材層の成分を溶媒とともに流動状にしたものである電極合材層塗工材および保護絶縁層の成分を溶媒とともに流動状にしたものである保護絶縁層塗工材を準備する塗工材準備工程と,
前記電極層合材塗工材と前記保護絶縁層塗工材とを前記集電箔上に隣接して塗工する塗工工程と,
前記塗工工程後に前記集電箔上の前記電極合材層塗工材および前記保護絶縁層塗工材を乾燥させる乾燥工程とを有し,
前記塗工工程では,前記保護絶縁層塗工材の塗工時の厚さを,前記電極合材層塗工材の塗工時の厚さより小さくし,
前記塗工工程から前記乾燥工程に至るまでの間に,前記電極合材層塗工材および前記保護絶縁層塗工材がいずれも湿潤状態のままで接触して前記集電箔上に存在する期間が存在する電極シートの製造方法。
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2020027028A JP7192809B2 (ja) | 2020-02-20 | 2020-02-20 | 電極シートの製造方法 |
| US16/953,442 US20210265609A1 (en) | 2020-02-20 | 2020-11-20 | Method for manufacturing electrode sheet |
| CN202110047861.5A CN113285061A (zh) | 2020-02-20 | 2021-01-14 | 电极片的制造方法 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2020027028A JP7192809B2 (ja) | 2020-02-20 | 2020-02-20 | 電極シートの製造方法 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2021131988A JP2021131988A (ja) | 2021-09-09 |
| JP7192809B2 true JP7192809B2 (ja) | 2022-12-20 |
Family
ID=77275693
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2020027028A Active JP7192809B2 (ja) | 2020-02-20 | 2020-02-20 | 電極シートの製造方法 |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US20210265609A1 (ja) |
| JP (1) | JP7192809B2 (ja) |
| CN (1) | CN113285061A (ja) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102835258B1 (ko) * | 2020-11-17 | 2025-07-16 | 주식회사 엘지에너지솔루션 | 오버레이 부의 절연성 평가방법 |
| EP4333089A1 (en) * | 2022-09-05 | 2024-03-06 | LG Energy Solution, Ltd. | Battery manufacturing method and system |
| CN115911398B (zh) * | 2022-11-09 | 2025-05-30 | 惠州锂威新能源科技有限公司 | 一种安全电芯极片结构及锂离子电池 |
| SE547623C2 (en) * | 2023-11-01 | 2025-10-28 | Northvolt Ab | Insulating edge coating comprising pvdf, a ceramic material and a polyurethane binder |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015213073A (ja) | 2010-09-03 | 2015-11-26 | 株式会社Gsユアサ | 電池 |
| JP2019160553A (ja) | 2018-03-13 | 2019-09-19 | Tdk株式会社 | 電極及び蓄電素子 |
| JP2021507488A (ja) | 2018-02-01 | 2021-02-22 | エルジー・ケム・リミテッド | リチウム二次電池用絶縁層形成用組成物、及びそれを利用したリチウム二次電池用電極の製造方法 |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5834052A (en) * | 1995-12-11 | 1998-11-10 | Fuji Photo Film Co., Ltd. | Producing electrode sheet with multilayer structure by simultaneous multilayer coating |
| JP4201619B2 (ja) * | 2003-02-26 | 2008-12-24 | 三洋電機株式会社 | 非水電解質二次電池、及びそれに使用する電極の製造方法 |
| JP5858325B2 (ja) * | 2010-09-03 | 2016-02-10 | 株式会社Gsユアサ | 電池 |
| JP6766338B2 (ja) * | 2015-10-30 | 2020-10-14 | 三洋電機株式会社 | 電極板の製造方法及び二次電池の製造方法 |
-
2020
- 2020-02-20 JP JP2020027028A patent/JP7192809B2/ja active Active
- 2020-11-20 US US16/953,442 patent/US20210265609A1/en not_active Abandoned
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2021
- 2021-01-14 CN CN202110047861.5A patent/CN113285061A/zh active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015213073A (ja) | 2010-09-03 | 2015-11-26 | 株式会社Gsユアサ | 電池 |
| JP2021507488A (ja) | 2018-02-01 | 2021-02-22 | エルジー・ケム・リミテッド | リチウム二次電池用絶縁層形成用組成物、及びそれを利用したリチウム二次電池用電極の製造方法 |
| JP2019160553A (ja) | 2018-03-13 | 2019-09-19 | Tdk株式会社 | 電極及び蓄電素子 |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2021131988A (ja) | 2021-09-09 |
| CN113285061A (zh) | 2021-08-20 |
| US20210265609A1 (en) | 2021-08-26 |
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