JP5744831B2 - シャットダウン特性を有するリチウム二次電池用分離膜 - Google Patents
シャットダウン特性を有するリチウム二次電池用分離膜 Download PDFInfo
- Publication number
- JP5744831B2 JP5744831B2 JP2012278493A JP2012278493A JP5744831B2 JP 5744831 B2 JP5744831 B2 JP 5744831B2 JP 2012278493 A JP2012278493 A JP 2012278493A JP 2012278493 A JP2012278493 A JP 2012278493A JP 5744831 B2 JP5744831 B2 JP 5744831B2
- Authority
- JP
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- Prior art keywords
- separation membrane
- film
- secondary battery
- microporous
- lithium secondary
- 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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- 239000012528 membrane Substances 0.000 title claims description 32
- 238000000926 separation method Methods 0.000 title claims description 32
- 229910052744 lithium Inorganic materials 0.000 title claims description 21
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims description 19
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 claims description 33
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 claims description 33
- 229920005604 random copolymer Polymers 0.000 claims description 27
- 229920005989 resin Polymers 0.000 claims description 21
- 239000011347 resin Substances 0.000 claims description 21
- 239000000155 melt Substances 0.000 claims description 9
- 239000002356 single layer Substances 0.000 claims description 5
- 238000000137 annealing Methods 0.000 claims description 3
- 125000004432 carbon atom Chemical group C* 0.000 claims description 2
- 125000001183 hydrocarbyl group Chemical group 0.000 claims 1
- 239000010408 film Substances 0.000 description 53
- 238000000034 method Methods 0.000 description 27
- -1 lithium cations Chemical class 0.000 description 21
- 239000002243 precursor Substances 0.000 description 17
- 239000004743 Polypropylene Substances 0.000 description 12
- 238000004519 manufacturing process Methods 0.000 description 12
- 229920001155 polypropylene Polymers 0.000 description 12
- 230000000052 comparative effect Effects 0.000 description 11
- 239000010410 layer Substances 0.000 description 10
- 230000008569 process Effects 0.000 description 10
- 229920000642 polymer Polymers 0.000 description 9
- 238000006116 polymerization reaction Methods 0.000 description 9
- 230000035699 permeability Effects 0.000 description 8
- 239000011342 resin composition Substances 0.000 description 8
- 238000001125 extrusion Methods 0.000 description 7
- 238000002844 melting Methods 0.000 description 7
- 230000008018 melting Effects 0.000 description 7
- 239000011148 porous material Substances 0.000 description 7
- 229920001903 high density polyethylene Polymers 0.000 description 6
- 239000004700 high-density polyethylene Substances 0.000 description 6
- 238000011084 recovery Methods 0.000 description 6
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 5
- 239000005977 Ethylene Substances 0.000 description 5
- 239000000654 additive Substances 0.000 description 5
- 239000003054 catalyst Substances 0.000 description 5
- 239000002861 polymer material Substances 0.000 description 5
- 239000004698 Polyethylene Substances 0.000 description 4
- 239000003960 organic solvent Substances 0.000 description 4
- 230000000704 physical effect Effects 0.000 description 4
- 229920000573 polyethylene Polymers 0.000 description 4
- 230000002265 prevention Effects 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 239000010954 inorganic particle Substances 0.000 description 3
- 229940057995 liquid paraffin Drugs 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000000178 monomer Substances 0.000 description 3
- VXNZUUAINFGPBY-UHFFFAOYSA-N 1-Butene Chemical compound CCC=C VXNZUUAINFGPBY-UHFFFAOYSA-N 0.000 description 2
- 125000005234 alkyl aluminium group Chemical group 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 238000012685 gas phase polymerization Methods 0.000 description 2
- 238000004898 kneading Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000000379 polymerizing effect Effects 0.000 description 2
- 229920005672 polyolefin resin Polymers 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 208000033978 Device electrical impedance issue Diseases 0.000 description 1
- 241000446313 Lamella Species 0.000 description 1
- JKIJEFPNVSHHEI-UHFFFAOYSA-N Phenol, 2,4-bis(1,1-dimethylethyl)-, phosphite (3:1) Chemical compound CC(C)(C)C1=CC(C(C)(C)C)=CC=C1OP(OC=1C(=CC(=CC=1)C(C)(C)C)C(C)(C)C)OC1=CC=C(C(C)(C)C)C=C1C(C)(C)C JKIJEFPNVSHHEI-UHFFFAOYSA-N 0.000 description 1
- 239000004696 Poly ether ether ketone Substances 0.000 description 1
- 229930182556 Polyacetal Natural products 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 239000004695 Polyether sulfone Substances 0.000 description 1
- 239000004642 Polyimide Substances 0.000 description 1
- 229920000265 Polyparaphenylene Polymers 0.000 description 1
- 239000004734 Polyphenylene sulfide Substances 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 229920010741 Ultra High Molecular Weight Polyethylene (UHMWPE) Polymers 0.000 description 1
- 239000011954 Ziegler–Natta catalyst Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 239000002216 antistatic agent Substances 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000012662 bulk polymerization Methods 0.000 description 1
- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical compound [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 description 1
- 239000008116 calcium stearate Substances 0.000 description 1
- 235000013539 calcium stearate Nutrition 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000010406 cathode material Substances 0.000 description 1
- 239000012986 chain transfer agent Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010528 free radical solution polymerization reaction Methods 0.000 description 1
- 230000009477 glass transition Effects 0.000 description 1
- 239000012760 heat stabilizer Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 150000002430 hydrocarbons Chemical group 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 239000012968 metallocene catalyst Substances 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920001707 polybutylene terephthalate Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920006393 polyether sulfone Polymers 0.000 description 1
- 229920002530 polyetherether ketone Polymers 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 229920006324 polyoxymethylene Polymers 0.000 description 1
- 229920000069 polyphenylene sulfide Polymers 0.000 description 1
- 229920005629 polypropylene homopolymer Polymers 0.000 description 1
- 239000002516 radical scavenger Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000012779 reinforcing material Substances 0.000 description 1
- 239000012748 slip agent Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 150000003609 titanium compounds Chemical class 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
Classifications
-
- 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
-
- 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
- H01M50/489—Separators, membranes, diaphragms or spacing elements inside the cells, characterised by their physical properties, e.g. swelling degree, hydrophilicity or shut down properties
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
-
- 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
- H01M50/403—Manufacturing processes of separators, membranes or diaphragms
- H01M50/406—Moulding; Embossing; Cutting
-
- 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
- H01M50/489—Separators, membranes, diaphragms or spacing elements inside the cells, characterised by their physical properties, e.g. swelling degree, hydrophilicity or shut down properties
- H01M50/491—Porosity
-
- 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
- H01M50/489—Separators, membranes, diaphragms or spacing elements inside the cells, characterised by their physical properties, e.g. swelling degree, hydrophilicity or shut down properties
- H01M50/494—Tensile strength
-
- 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
Description
<物性測定/評価項目およびその試験法>
1) 溶融指数
ASTM D1238に基づいて2.16kg荷重で230℃で測定した。
2) 厚さ
ASTM D374に基づいて膜の厚さを測定した。
3) 引張強度
ASTM D3763に基づいてインストロン社万能試験機(UTM)で測定した。
4) 弾性復元率(ER)
万能試験機(UTM)で、幅15mmの前駆体フィルムに対し、Grip間隔50mm(Lo)から始めて、延伸速度50mm/minに延伸するが、100%延伸が生じた後直ぐ再び50mm/minの速度に回復させるとき、残留応力が0になる時点における長さ(L1)を測定し、下記式に従って計算した。
ER(%) = (L1 - L0)/ L0 ×100
5) 通気度(Gurley)
日本産業準(JIS)ガリ測定法に従って、常温で100mLの空気が4.8inch(12.192cm) H2Oの一定な圧力下で、1平方インチ(inch2)(6.4516cm2)の微細多孔性フィルムを通過するのにかかる時間(秒)を測定した。
6) 空隙率(多孔性)
横/縦50mmに多孔性フィルムを切り、厚さと重さを測定して密度を計算する。即ち、体積は、横×縦×厚さで測定し、密度(ρ1)は、測定した重さを体積で割って計算する。空隙率(P)は、樹脂の真密度(ρ0)と上で測定したフィルム密度(ρ1)を用いて下の式で計算した。本発明で確認されたポリプロピレンの真密度は0.905g/cm3であった。
P(%) = (ρ0 - ρ1)/ ρ0×100
7) シャットダウン温度
シャットダウン温度は、10℃/分の速度で昇温する過程で、電池のインピダンスが始めの初期値の100倍まで高くなる温度(℃)に定義して測定した。
実施例および比較例で用いられたポリプロピレン樹脂を下記表1に整理した。ポリプロピレン樹脂100重量部に対して、添加剤としてIrganox(登録商標)1010(i-1010), Irgafos168(i-168), およびステアリン酸カルシウム(calcium stearate)をそれぞれ500重量ppmずつ含んで、2軸混練押出し機(韓国イエム、32mm twin extruder)に一度に全てを投入して、混錬してポリプロピレン樹脂組成物を製造した。上記ポリプロピレン樹脂組成物を用いて、T-dieが結合されたシングルスクリユー押出し機を介して200℃で押出し、テイクアップ(take−up)の速度を25m/minにして前駆体フィルムを製造した。各前駆体フィルムを、常温で25%、120℃で175%の割合で順次的に1軸延伸して合計200%延伸して、分離膜用微細多孔性フィルムを製造した。
Claims (2)
- 樹脂として、230℃、2.16kgにおける溶融指数が0.5〜10g/10分であり、一般式CH 2 =CH−R(ここで、RはHまたは炭素数2〜20個の炭化水素基)で表示される1種以上の共単量体を0.1〜8重量%含むプロピレン系ランダム共重合体のみを含む微細多孔性単層フィルムからなり、シャットダウン機能を有するリチウム二次電池用微細多孔性分離膜であって、上記微細多孔性分離膜は1〜100μmの厚さ及び20%から99%の空隙率を有し、137℃以下でシャットダウン機能を発現することを特徴とするリチウム二次電池用微細多孔性分離膜。
- 上記微細多孔性分離膜は、非多孔性フィルム形態に押し出し後、アニリング、常温延伸、90〜150℃での高温延伸の工程を経て微細多孔性分離膜に製造されることを特徴とする、請求項1に記載のリチウム二次電池用微細多孔性分離膜。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR10-2011-0139156 | 2011-12-21 | ||
KR1020110139156A KR101268231B1 (ko) | 2011-12-21 | 2011-12-21 | 셧다운 특성을 갖는 리튬 이차전지용 분리막 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2013131500A JP2013131500A (ja) | 2013-07-04 |
JP5744831B2 true JP5744831B2 (ja) | 2015-07-08 |
Family
ID=48637952
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2012278493A Active JP5744831B2 (ja) | 2011-12-21 | 2012-12-20 | シャットダウン特性を有するリチウム二次電池用分離膜 |
Country Status (5)
Country | Link |
---|---|
US (1) | US8920961B2 (ja) |
JP (1) | JP5744831B2 (ja) |
KR (1) | KR101268231B1 (ja) |
CN (1) | CN103178228B (ja) |
TW (1) | TWI473326B (ja) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10573933B2 (en) * | 2015-05-15 | 2020-02-25 | Samsung Electronics Co., Ltd. | Lithium metal battery |
CN104966806A (zh) * | 2015-06-26 | 2015-10-07 | 深圳市星源材质科技股份有限公司 | 一种爽滑性锂离子电池隔膜及隔膜的加工方法 |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TW297171B (ja) | 1994-12-20 | 1997-02-01 | Hoechst Celanese Corp | |
JP2000007819A (ja) * | 1998-04-21 | 2000-01-11 | Tokuyama Corp | 多孔性フィルムおよびその製造方法 |
EP1153968B1 (en) * | 1998-10-01 | 2004-02-25 | Tonen Chemical Corporation | Microporous polyolefin film and process for producing the same |
TW595035B (en) * | 2000-08-30 | 2004-06-21 | Sumitomo Chemical Co | Separator for non-aqueous electrolyte secondary battery, and non-aqueous electrolyte secondary battery |
KR100612107B1 (ko) | 2004-10-29 | 2006-08-11 | 삼성토탈 주식회사 | 프로필렌의 중합방법 |
KR100612108B1 (ko) | 2004-10-29 | 2006-08-11 | 삼성토탈 주식회사 | 프로필렌 중합용 촉매 및 이를 이용한 프로필렌의 중합방법 |
KR100612106B1 (ko) | 2004-10-29 | 2006-08-11 | 삼성토탈 주식회사 | 프로필렌의 중합방법 |
JP4546910B2 (ja) * | 2005-09-22 | 2010-09-22 | 三菱樹脂株式会社 | 多孔積層体の製造方法および多孔積層体 |
EP2306552B1 (en) * | 2008-07-16 | 2014-11-26 | Toray Industries, Inc. | Separator for electricity storage device |
DE102008061746A1 (de) * | 2008-12-12 | 2010-06-24 | Treofan Germany Gmbh & Co. Kg | Einschichtige mikroporöse Folie für Batterien mit Abschaltfunktion |
DE102008061748A1 (de) * | 2008-12-12 | 2010-06-24 | Treofan Germany Gmbh & Co. Kg | Mehrschichtige mikroporöse Folie für Batterien mit Abschaltfunktion |
KR101592075B1 (ko) * | 2009-03-09 | 2016-02-04 | 아사히 가세이 이-매터리얼즈 가부시키가이샤 | 적층 세퍼레이터, 폴리올레핀 미다공막 및 축전 디바이스용 세퍼레이터 |
US20110319511A1 (en) * | 2009-03-17 | 2011-12-29 | Toray Industries, Inc. | Porous polypropylene film and production method thereof |
US8592071B2 (en) * | 2010-02-26 | 2013-11-26 | Mitsubishi Plastics, Inc. | Laminated porous film and separator for battery |
-
2011
- 2011-12-21 KR KR1020110139156A patent/KR101268231B1/ko active IP Right Grant
-
2012
- 2012-12-05 TW TW101145567A patent/TWI473326B/zh active
- 2012-12-20 US US13/722,360 patent/US8920961B2/en active Active
- 2012-12-20 JP JP2012278493A patent/JP5744831B2/ja active Active
- 2012-12-21 CN CN201210559740.XA patent/CN103178228B/zh active Active
Also Published As
Publication number | Publication date |
---|---|
US8920961B2 (en) | 2014-12-30 |
TW201330364A (zh) | 2013-07-16 |
TWI473326B (zh) | 2015-02-11 |
JP2013131500A (ja) | 2013-07-04 |
CN103178228A (zh) | 2013-06-26 |
US20130164597A1 (en) | 2013-06-27 |
KR101268231B1 (ko) | 2013-05-31 |
CN103178228B (zh) | 2015-11-18 |
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