JP2008235251A - 電池用電極及び電池用電極の製造方法 - Google Patents
電池用電極及び電池用電極の製造方法 Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 17
- 239000011149 active material Substances 0.000 claims abstract description 43
- 238000003825 pressing Methods 0.000 claims abstract description 9
- 239000011248 coating agent Substances 0.000 claims description 61
- 238000000576 coating method Methods 0.000 claims description 61
- 238000000137 annealing Methods 0.000 claims description 14
- 238000004519 manufacturing process Methods 0.000 claims description 12
- 229910052782 aluminium Inorganic materials 0.000 claims description 8
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 8
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 6
- 229910052802 copper Inorganic materials 0.000 claims description 6
- 239000010949 copper Substances 0.000 claims description 6
- 230000002093 peripheral effect Effects 0.000 claims description 6
- 238000004804 winding Methods 0.000 claims description 5
- 230000005855 radiation Effects 0.000 claims description 4
- 238000005452 bending Methods 0.000 abstract description 2
- 238000010438 heat treatment Methods 0.000 description 11
- 238000001035 drying Methods 0.000 description 8
- 238000001816 cooling Methods 0.000 description 5
- 239000011230 binding agent Substances 0.000 description 3
- 229910012851 LiCoO 2 Inorganic materials 0.000 description 2
- 229910014689 LiMnO Inorganic materials 0.000 description 2
- 229910013290 LiNiO 2 Inorganic materials 0.000 description 2
- 239000002388 carbon-based active material Substances 0.000 description 2
- 239000006258 conductive agent Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000007770 graphite material Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000007773 negative electrode material Substances 0.000 description 1
- 239000007774 positive electrode material Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
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- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
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- H01M4/0404—Methods of deposition of the material by coating on electrode collectors
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- H01M4/0471—Processes of manufacture in general involving thermal treatment, e.g. firing, sintering, backing particulate active material, thermal decomposition, pyrolysis
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- H01M4/00—Electrodes
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- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
- H01M4/139—Processes of manufacture
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- H—ELECTRICITY
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- 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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- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
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Abstract
【解決手段】本発明による電池用電極は電極の構造的安定性を確保できるように電池用電極は電池の正極又は負極に適用される電極であって、前記電極は薄板形態の集電体と前記集電体上に塗布される活物質層から成り、前記集電体は上面に活物質層が形成される集電体コーティング部と集電体コーティング部と隣接するように配置されて活物質層が形成されない集電体無地部を含み、前記集電体無地部は前記集電体コーティング部より降伏応力が小さい構造で作られる。これにより、集電体を加圧する過程で曲がり現象を防止できて電極の構造的安定性及び生産性を向上させることができる。
【選択図】図2
Description
1.5≦σ1/σ2≦7 ・・・(式1)
1.5≦σ1/σ2≦7 ・・・(式1)
Al A1050(JIS)のAlから成り、15μmの厚さを有する正極集電体15の集電体無地部(15a)をアニーリング処理した。アニーリング処理は正極集電体15を550℃で24秒加熱した後、常温で徐々に冷却して行った。
Al A1050(JIS)のAlから成り、15μmの厚さを有する正極集電体の集電体コーティング部に活物質を塗布した後、乾燥及びプレシング加工を実施した。この状態で集電体無地部を横3mm、縦10mmに切断して、降伏荷重及び延伸量を測定した。そして集電体コーティング部上に形成された活物質を除去した後、集電体コーティング部を横3mm、縦10mmに切断して、降伏荷重及び延伸量を測定した。
11 無地部
12 コーティング部
15 集電体
17 活物質層
110 加熱部材
121、123 ローラ
130 コーティング部材
140 乾燥炉
150 加圧部材
Claims (14)
- 電池の正極又は負極に適用される電極であって、
前記電極は、板状の集電体と、前記集電体上に塗布される活物質層とから成り、
前記集電体は、上面に活物質層が形成される集電体コーティング部と、前記集電体コーティング部と隣接するように配置されて活物質層が形成されない集電体無地部とを含み、
前記集電体無地部は、活物質層が除去された前記集電体コーティング部より降伏応力が小さいことを特徴とする電極。 - 前記集電体無地部は、前記集電体コーティング部より延伸率が大きいことを特徴とする請求項1に記載の電極。
- 前記集電体無地部は、前記集電体コーティング部より残留応力が小さいことを特徴とする請求項1に記載の電極。
- 前記集電体コーティング部の降伏応力をσ1、前記集電体無地部の降伏応力をσ2としたとき、下記式1を満足することを特徴とする請求項1に記載の電極。
1.5≦σ1/σ2≦7 ・・・(式1) - 前記集電体は、アルミニウムから成ることを特徴とする請求項1に記載の電極。
- 前記集電体は、銅から成ることを特徴とする請求項1に記載の電極。
- 前記正極又は前記負極は、正極と負極の間にセパレータを介在した後に巻き取って製造される2次電池に適用されることを特徴とする請求項1に記載の電極。
- 板状の集電体を準備する段階と、
前記集電体の周縁部をアニーリングする段階と、
前記集電体に活物質をコーティングする段階と、
前記活物質がコーティングされた前記集電体をプレシング加工する段階と、
を含むことを特徴とする電極の製造方法。 - 前記アニーリングする段階は、前記活物質をコーティングする段階以前に行われることを特徴とする請求項8に記載の電極の製造方法。
- 前記アニーリングする段階は、前記活物質をコーティングする段階以後であることを特徴とする請求項8に記載の電極の製造方法。
- 前記集電体は、アルミニウムから成ることを特徴とする請求項8に記載の電極の製造方法。
- 前記集電体は、銅から成ることを特徴とする請求項8に記載の電極の製造方法。
- 前記電極は正極と負極の間にセパレータを介在した後に巻き取って製造される2次電池の前記正極又は前記負極に適用されることを特徴とする請求項8に記載の電極の製造方法。
- 前記アニーリング処理する段階における前記集電体の周縁部は、輻射によって加熱されることを特徴とする請求項8に記載の電極の製造方法。
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Application Number | Priority Date | Filing Date | Title |
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KR1020070026724A KR100823198B1 (ko) | 2007-03-19 | 2007-03-19 | 전지용 전극 및 전지용 전극의 제조 방법 |
KR10-2007-0026724 | 2007-03-19 |
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JP2008235251A true JP2008235251A (ja) | 2008-10-02 |
JP5001867B2 JP5001867B2 (ja) | 2012-08-15 |
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US (1) | US20080233476A1 (ja) |
EP (1) | EP1978579A3 (ja) |
JP (1) | JP5001867B2 (ja) |
KR (1) | KR100823198B1 (ja) |
CN (1) | CN101271970B (ja) |
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US20100151301A1 (en) * | 2008-12-16 | 2010-06-17 | Samsung Electronics Co., Ltd. | Battery and battery pack comprising the same |
JP2013069637A (ja) * | 2011-09-26 | 2013-04-18 | Nissan Motor Co Ltd | 帯状電極の製造装置および製造方法 |
JP2013131342A (ja) * | 2011-12-20 | 2013-07-04 | Toyota Motor Corp | 二次電池及びその製造方法ならびに該電池に用いられる負極シートの製造方法 |
WO2019239988A1 (ja) * | 2018-06-11 | 2019-12-19 | 株式会社村田製作所 | 電池用電極およびその製造方法 |
JP2022129001A (ja) * | 2021-02-24 | 2022-09-05 | プライムプラネットエナジー&ソリューションズ株式会社 | 電極シートの製造方法 |
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KR101172714B1 (ko) * | 2009-02-24 | 2012-08-14 | 파나소닉 주식회사 | 비수계 2차 전지용 전극판과 그 제조 방법 및 이것을 사용한 비수계 2차 전지 |
KR20110017761A (ko) * | 2009-08-14 | 2011-02-22 | 에스비리모티브 주식회사 | 이차 전지용 전극판 및 이를 포함하는 이차 전지 |
JP2012174594A (ja) * | 2011-02-23 | 2012-09-10 | Toshiba Corp | 非水電解質二次電池 |
WO2013096220A1 (en) * | 2011-12-20 | 2013-06-27 | Applied Materials, Inc. | Apparatus and method for hot coating electrodes of lithium-ion batteries |
US10050255B2 (en) | 2012-03-08 | 2018-08-14 | Samsung Sdi Co., Ltd. | Rechargeable battery and method of manufacturing the same |
US9490472B2 (en) * | 2013-03-28 | 2016-11-08 | Semiconductor Energy Laboratory Co., Ltd. | Method for manufacturing electrode for storage battery |
DE102017215143A1 (de) * | 2017-08-30 | 2019-02-28 | Bayerische Motoren Werke Aktiengesellschaft | Elektrode und verfahren zur ihrer herstellung |
WO2021112418A1 (ko) * | 2019-12-05 | 2021-06-10 | 주식회사 엘지에너지솔루션 | 이차 전지용 전극 및 이차 전지용 전극 제조 방법 |
CN117981098A (zh) * | 2022-07-25 | 2024-05-03 | 宁德时代新能源科技股份有限公司 | 集流体、极片、电池单体、电池及用电装置 |
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- 2008-01-30 US US12/010,868 patent/US20080233476A1/en not_active Abandoned
- 2008-03-03 CN CN2008100831160A patent/CN101271970B/zh active Active
- 2008-03-11 EP EP08102488A patent/EP1978579A3/en not_active Ceased
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US8415048B2 (en) * | 2008-12-16 | 2013-04-09 | Samsung Electronics Co., Ltd. | Battery and battery pack comprising the same |
JP2013069637A (ja) * | 2011-09-26 | 2013-04-18 | Nissan Motor Co Ltd | 帯状電極の製造装置および製造方法 |
JP2013131342A (ja) * | 2011-12-20 | 2013-07-04 | Toyota Motor Corp | 二次電池及びその製造方法ならびに該電池に用いられる負極シートの製造方法 |
WO2019239988A1 (ja) * | 2018-06-11 | 2019-12-19 | 株式会社村田製作所 | 電池用電極およびその製造方法 |
JP2022129001A (ja) * | 2021-02-24 | 2022-09-05 | プライムプラネットエナジー&ソリューションズ株式会社 | 電極シートの製造方法 |
JP7289861B2 (ja) | 2021-02-24 | 2023-06-12 | プライムプラネットエナジー&ソリューションズ株式会社 | 電極シートの製造方法 |
Also Published As
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US20080233476A1 (en) | 2008-09-25 |
KR100823198B1 (ko) | 2008-04-18 |
CN101271970A (zh) | 2008-09-24 |
CN101271970B (zh) | 2010-08-25 |
JP5001867B2 (ja) | 2012-08-15 |
EP1978579A3 (en) | 2012-08-29 |
EP1978579A2 (en) | 2008-10-08 |
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