JP4516796B2 - 電池セパレータおよびその製造方法 - Google Patents
電池セパレータおよびその製造方法 Download PDFInfo
- Publication number
- JP4516796B2 JP4516796B2 JP2004231815A JP2004231815A JP4516796B2 JP 4516796 B2 JP4516796 B2 JP 4516796B2 JP 2004231815 A JP2004231815 A JP 2004231815A JP 2004231815 A JP2004231815 A JP 2004231815A JP 4516796 B2 JP4516796 B2 JP 4516796B2
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- JP
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- Prior art keywords
- precursor
- film
- films
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- stacked
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
- H01M50/409—Separators, membranes or diaphragms characterised by the material
- H01M50/411—Organic material
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
- H01M50/409—Separators, membranes or diaphragms characterised by the material
- H01M50/449—Separators, membranes or diaphragms characterised by the material having a layered structure
- H01M50/457—Separators, membranes or diaphragms characterised by the material having a layered structure comprising three or more layers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
- H01M50/409—Separators, membranes or diaphragms characterised by the material
- H01M50/411—Organic material
- H01M50/414—Synthetic resins, e.g. thermoplastics or thermosetting resins
- H01M50/417—Polyolefins
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
- H01M50/409—Separators, membranes or diaphragms characterised by the material
- H01M50/449—Separators, membranes or diaphragms characterised by the material having a layered structure
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Cell Separators (AREA)
- Laminated Bodies (AREA)
Description
したがって、先駆物質を互いに積層することによって、製造される多層微孔質フィルムの剥離強度を改良するニーズが存在している。
電気抵抗(ER)は、
マクマレン数(MacMullen Number)(Nmac=rseparator/ρelectrolytetseparator、rseparator=R(セパレータの測定された抵抗)Aprobe(プローブの面積、cm2)、ρelectrolyte=電解質抵抗率(オーム−cm)、tseparator=セパレータの厚さ(cm))
として報告され、5210ロックイン増幅器およびパワースイート(PoweSuite)ソフトウエアとともに、テネシー州オークリッジ(Oak Ridge,TN)のEG&Gプリンストン・アプライド・リサーチ(Princeton Applied Research)273Aポテンシオスタット(Potentiostat)を用いた。テストセルは、湿潤セパレータに接触する1平方インチ(6.45平方cm)電極面を有する。セパレータは、3:7重量比のエチルカーボネート(EC)対エチルメチルカーボネート(EMC)において1モルLiPF6電解質で湿潤される。測定は、5mVのAC振幅および22,000〜24,000Hzの周波数範囲で行なわれた。結果は、4つの膜の平均であり、4つの膜が積重ねられ、測定され、次いで1つの膜を除去して、3つの膜を測定した。以下同様であり、これらの差が平均されている。
Claims (19)
- 多層微孔質フィルムであって、前記フィルムの個々の層が、熱および圧力によって互いに接着されており、1mmあたり1.6グラムを超える(40g/インチ)の剥離強度および25ミクロン以下の厚さを有するフィルム、を含む電池セパレータの製造方法であって、
第1先駆物質フィルムを押出して巻き取る工程と、
第2先駆物質フィルムを押出して巻き取る工程と、
第1および第2先駆物質フィルムを巻き出す工程と、
第1および第2先駆物質フィルムを積重ねて、単一の積重ねられた先駆物質を形成する工程と、
該単一の積重ねられた先駆物質フィルムの個々の層を積層する工程と、
該積層された単一積重ね先駆物質フィルムを巻き取る工程と、
複数の積層された単一積重ね先駆物質フィルムを積重ねる工程と、
前記複数の積層された単一積重ね先駆物質フィルムを微孔質にする工程と、を含み、
前記積層する工程が、加熱ニップローラー間で実施され、チルロールが前記ニップローラーに追従し、かつ、エッジトリムナイフが前記チルロールに追従する、製造方法。 - 前記第1または第2先駆物質の押出しがさらに、スロットダイ、Tダイ、またはブローンフィルムダイでの押出しも含む、請求項1の方法。
- 前記単一の積重ねられた先駆物質が3層先駆物質である、請求項1の方法。
- 前記3層先駆物質が、ポリプロピレン−ポリエチレン−ポリプロピレン先駆物質である、請求項3の方法。
- 積層が、30.5m/分(100ft/分)超の速度で行なわれる、請求項1の方法。
- 積層が、38.1m/分(125ft/分)超の速度で行なわれる、請求項5の方法。
- 積層が、45.7m/分(150ft/分)超の速度で行なわれる、請求項6の方法。
- 積層が、61.0m/分(200ft/分)超の速度で行なわれる、請求項7の方法。
- ニップローラーの温度が、145℃〜170℃である、請求項1の方法。
- ニップローラーの温度が、155℃〜165℃である、請求項9の方法。
- ニップローラーの圧力が、1線cmあたり17.7〜141.7kg(1線インチあたり100〜800ポンド(pli))である、請求項1の方法。
- ニップローラーの圧力が、1線cmあたり17.7〜53.1kg(1線インチあたり100〜300ポンド(pli))である、請求項11の方法。
- チルロール温度が20℃〜45℃である、請求項1の方法。
- チルロール温度が25℃〜40℃である、請求項13の方法。
- エアナイフが、ニップローラーとチルロールとの間に配置されている、請求項1の方法。
- 複数の積層された単一積重ね先駆物質フィルムが、少なくとも6つの積層された単一積重ね先駆物質フィルムである、請求項1の方法。
- 複数の積層された単一積重ね先駆物質フィルムが、少なくとも12の積層された単一積重ね先駆物質フィルムである、請求項16の方法。
- 複数の積層された単一積重ね先駆物質フィルムが、少なくとも16の積層された単一積重ね先駆物質フィルムである、請求項17の方法。
- 前記複数の積層された単一積重ね先駆物質フィルムを微孔質にする工程が、ドライプロセスとウエットプロセスとからなる群から選択される、請求項1の方法。
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US10/636,115 US20050031943A1 (en) | 2003-08-07 | 2003-08-07 | Battery separator and method of making same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2005056851A JP2005056851A (ja) | 2005-03-03 |
| JP4516796B2 true JP4516796B2 (ja) | 2010-08-04 |
Family
ID=33552953
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2004231815A Expired - Fee Related JP4516796B2 (ja) | 2003-08-07 | 2004-08-09 | 電池セパレータおよびその製造方法 |
Country Status (8)
| Country | Link |
|---|---|
| US (2) | US20050031943A1 (ja) |
| EP (1) | EP1505671A2 (ja) |
| JP (1) | JP4516796B2 (ja) |
| KR (1) | KR100637971B1 (ja) |
| CN (1) | CN100459227C (ja) |
| CA (1) | CA2472281A1 (ja) |
| SG (1) | SG129295A1 (ja) |
| TW (1) | TWI251364B (ja) |
Families Citing this family (30)
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| US20070148552A1 (en) * | 2003-12-24 | 2007-06-28 | Takashi Ikemoto | Microporous membrane made from polyolefin |
| EP1900514B1 (en) * | 2005-06-24 | 2013-08-14 | Toray Battery Separator Film Co., Ltd. | Polyethylene multilayer microporous membrane, battery separator using same, and battery |
| WO2007069560A1 (ja) * | 2005-12-15 | 2007-06-21 | Asahi Kasei Chemicals Corporation | ポリオレフィン製微多孔膜 |
| US20070238017A1 (en) * | 2006-04-07 | 2007-10-11 | Celgard Llc | Multilayer separator exhibiting improved strength and stability |
| KR100727248B1 (ko) * | 2007-02-05 | 2007-06-11 | 주식회사 엘지화학 | 다공성 활성층이 코팅된 유기/무기 복합 분리막 및 이를구비한 전기화학소자 |
| US7964266B2 (en) * | 2007-04-13 | 2011-06-21 | Bae Systems Tensylon H.P.M., Inc. | Wide ultra high molecular weight polyethylene sheet and method of manufacture |
| US20080251212A1 (en) * | 2007-04-13 | 2008-10-16 | Tensylon High Performance Materials, Inc. | Apparatus for the manufacture of wide polymeric sheet |
| US8715849B2 (en) * | 2007-10-05 | 2014-05-06 | Toray Battery Separator Film Co., Ltd. | Microporous polymer membrane |
| CN103311484A (zh) * | 2008-09-03 | 2013-09-18 | 三菱树脂株式会社 | 隔板用叠层多孔膜 |
| WO2011161837A1 (ja) * | 2010-06-25 | 2011-12-29 | 東レ株式会社 | 複合多孔質膜、複合多孔質膜の製造方法並びにそれを用いた電池用セパレーター |
| CN103339175B (zh) | 2011-02-03 | 2015-12-09 | 东丽株式会社 | 多孔性膜、蓄电器件用隔板及蓄电器件 |
| CN102315421B (zh) * | 2011-08-30 | 2014-08-20 | 珠海汉格能源科技有限公司 | 一种超薄型聚合物锂离子电池及其制备方法 |
| TWI453114B (zh) * | 2012-05-11 | 2014-09-21 | Entire Technology Co Ltd | 多孔複合膜的製造方法 |
| KR20210029294A (ko) * | 2013-03-15 | 2021-03-15 | 셀가드 엘엘씨 | 리튬 이온 이차 전지용 다층 하이브리드 전지 분리기 및 이의 제조방법 |
| CN103904280A (zh) * | 2014-03-27 | 2014-07-02 | 达尼特材料科技(芜湖)有限公司 | 一种锂离子电池用隔离膜及其制造方法 |
| CN105449140A (zh) * | 2014-08-27 | 2016-03-30 | 宁德时代新能源科技股份有限公司 | 隔离膜及锂离子二次电池 |
| US9605229B2 (en) * | 2014-12-19 | 2017-03-28 | Bathium Canada Inc. | Lubricant for lamination of lithium sheets into lithium thin films |
| JP6826052B2 (ja) | 2015-06-03 | 2021-02-03 | セルガード エルエルシー | 改良された低電気抵抗微多孔質バッテリセパレータ膜、セパレータ、電池、バッテリ及び関連する方法 |
| CN105017546B (zh) * | 2015-06-09 | 2017-08-08 | 界首市天鸿新材料股份有限公司 | 一种干法双拉锂电池隔膜生产工艺 |
| US10347890B2 (en) | 2015-07-31 | 2019-07-09 | Celgard, Llc | Laminated multilayer membranes, separators, batteries, and methods |
| CN114171851A (zh) * | 2015-08-17 | 2022-03-11 | 赛尔格有限责任公司 | 改进的电池隔板和相关方法 |
| JP7156942B2 (ja) * | 2015-09-18 | 2022-10-19 | セルガード エルエルシー | 改良された膜、カレンダー加工された微多孔膜、電池セパレータ、および関連する方法 |
| EP3375026B1 (en) * | 2015-11-11 | 2022-07-20 | Celgard, LLC | Microlayer membranes, improved battery separators, and methods of manufacture and use |
| US11495865B2 (en) | 2016-11-11 | 2022-11-08 | Celgard, Llc | Microlayer membranes, improved battery separators, and related methods |
| KR102143267B1 (ko) * | 2016-12-22 | 2020-08-10 | 한화토탈 주식회사 | 미세 다공성 다층 필름 제조 방법 및 그에 의해 제조된 필름 |
| CN109742302A (zh) * | 2019-01-15 | 2019-05-10 | 江苏安瑞达新材料有限公司 | 高电解液润湿性的锂离子电池隔膜及其制备方法 |
| CN110406137A (zh) * | 2019-06-26 | 2019-11-05 | 佛山市盈博莱科技股份有限公司 | 一种高孔隙率聚烯烃锂离子电池隔膜的制备方法 |
| RU2766873C1 (ru) * | 2021-07-28 | 2022-03-16 | СЕЛГАРД ЭлЭлСи | Усовершенствованные мембраны, каландрированные микропористые мембраны, аккумуляторные сепараторы и соответствующие способы |
| US20250079631A1 (en) | 2022-10-12 | 2025-03-06 | Sinoma Lithium Battery Separator (Nanjing) Co., Ltd. | Polyolefin porous film and preparation method therefor, battery separator, and electrochemical device |
| CN116231231B (zh) * | 2023-05-09 | 2023-08-01 | 合肥长阳新能源科技有限公司 | 一种层间交联共挤电池隔膜及其制备方法与电池 |
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| TW200401237A (en) * | 2002-07-05 | 2004-01-16 | Lintec Corp | Laminate sheet, laminate sheet roll, and producing methods therefor |
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-
2003
- 2003-08-07 US US10/636,115 patent/US20050031943A1/en not_active Abandoned
-
2004
- 2004-06-24 SG SG200403829A patent/SG129295A1/en unknown
- 2004-06-25 CA CA002472281A patent/CA2472281A1/en not_active Abandoned
- 2004-06-28 TW TW093118893A patent/TWI251364B/zh not_active IP Right Cessation
- 2004-07-07 KR KR1020040052636A patent/KR100637971B1/ko not_active Expired - Fee Related
- 2004-07-31 EP EP04018207A patent/EP1505671A2/en not_active Withdrawn
- 2004-08-03 CN CNB2004100588861A patent/CN100459227C/zh not_active Expired - Lifetime
- 2004-08-09 JP JP2004231815A patent/JP4516796B2/ja not_active Expired - Fee Related
-
2007
- 2007-03-07 US US11/683,022 patent/US9112214B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| TW200507325A (en) | 2005-02-16 |
| EP1505671A2 (en) | 2005-02-09 |
| CA2472281A1 (en) | 2005-02-07 |
| US9112214B2 (en) | 2015-08-18 |
| SG129295A1 (en) | 2007-02-26 |
| TWI251364B (en) | 2006-03-11 |
| CN1581534A (zh) | 2005-02-16 |
| KR100637971B1 (ko) | 2006-10-23 |
| CN100459227C (zh) | 2009-02-04 |
| JP2005056851A (ja) | 2005-03-03 |
| KR20050015998A (ko) | 2005-02-21 |
| US20050031943A1 (en) | 2005-02-10 |
| US20070148538A1 (en) | 2007-06-28 |
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