WO2010117195A3 - 다공성 코팅층을 포함하는 세퍼레이터, 그 제조방법 및 이를 구비한 전기화학소자 - Google Patents

다공성 코팅층을 포함하는 세퍼레이터, 그 제조방법 및 이를 구비한 전기화학소자 Download PDF

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WO2010117195A3
WO2010117195A3 PCT/KR2010/002106 KR2010002106W WO2010117195A3 WO 2010117195 A3 WO2010117195 A3 WO 2010117195A3 KR 2010002106 W KR2010002106 W KR 2010002106W WO 2010117195 A3 WO2010117195 A3 WO 2010117195A3
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coating layer
porous coating
woven fabric
separator
fabric base
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PCT/KR2010/002106
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WO2010117195A2 (ko
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윤수진
박필규
김종훈
유진녕
김인철
이상영
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주식회사 엘지화학
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Priority to JP2012503340A priority Critical patent/JP5415609B2/ja
Priority to EP10761856.3A priority patent/EP2418712B1/en
Priority to CN201080016180.2A priority patent/CN102388485B/zh
Publication of WO2010117195A2 publication Critical patent/WO2010117195A2/ko
Publication of WO2010117195A3 publication Critical patent/WO2010117195A3/ko
Priority to US13/243,081 priority patent/US8986892B2/en
Priority to US14/622,303 priority patent/US9559345B2/en

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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
    • 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
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    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/22—After-treatment of expandable particles; Forming foamed products
    • 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
    • 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
    • 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
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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
    • 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
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    • 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
    • H01M50/426—Fluorocarbon polymers
    • H—ELECTRICITY
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    • H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
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    • H01M50/431—Inorganic material
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    • 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
    • H01M50/431—Inorganic material
    • H01M50/434—Ceramics
    • H—ELECTRICITY
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    • 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
    • H01M50/44—Fibrous material
    • H—ELECTRICITY
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    • 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
    • H01M50/443—Particulate material
    • H—ELECTRICITY
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    • 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
    • H01M50/446—Composite material consisting of a mixture of organic and inorganic materials
    • H—ELECTRICITY
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    • 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
    • H01M50/451—Separators, membranes or diaphragms characterised by the material having a layered structure comprising layers of only organic material and layers containing inorganic 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
    • H01M50/454—Separators, membranes or diaphragms characterised by the material having a layered structure comprising a non-fibrous layer and a fibrous layer superimposed on one another
    • 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
    • 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
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  • Inorganic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Composite Materials (AREA)
  • Ceramic Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Cell Separators (AREA)

Abstract

본 발명의 세퍼레이터는 (a) 기공들을 갖는 부직포 기재; (b) 상기 부직포 기재의 기공들 내부에 위치하고, 상기 기공들의 평균입경보다 작은 평균입경을 가지며 상기 부직포 기재의 융점 또는 분해점보다 낮은 융점을 갖는 열가소성 미세분말들; 및 (c) 상기 부직포 기재의 적어도 일면 위에 위치하고, 무기물 입자들과 상기 열가소성 미세분말의 융점보다 높은 융점 또는 분해점을 갖는 바인더 고분자의 혼합물을 포함하며, 상기 무기물 입자들이 상기 바인더 고분자에 의해 서로 연결 및 고정되어 있고 상기 무기물 입자들 간의 빈공간(interstitial volume)으로 인해 형성된 기공들을 갖는 다공성 코팅층을 포함한다. 본 발명에 따르면, 부직포 기재에 형성된 큰 기공들을 열가소성 미세분말로 먼저 채운 후에 다공성 코팅층을 형성하므로서, 균일한 다공성 코팅층이 형성된 세퍼레이터를 얻을 수 있다. 이에 따라, 부직포 기재를 세퍼레이터로 사용함에 따라 충전이 되지 않거나 누설전류(leak current)의 발생에 의해 CV 구간이 길어지는 문제점을 방지할 수 있다. 또한, 열가소성 미세분말들로 인해 본 발명의 세퍼레이터는 셧다운 기능을 가지며, 열폭주시에도 균일한 다공성 코팅층으로 인해 전지의 안전성이 유지된다.
PCT/KR2010/002106 2009-04-10 2010-04-06 다공성 코팅층을 포함하는 세퍼레이터, 그 제조방법 및 이를 구비한 전기화학소자 WO2010117195A2 (ko)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP2012503340A JP5415609B2 (ja) 2009-04-10 2010-04-06 多孔性コーティング層を含むセパレータ、その製造方法、及びそれを備える電気化学素子
EP10761856.3A EP2418712B1 (en) 2009-04-10 2010-04-06 Separator with porous coating layer, manufacturing method therefor and electrochemical device comprising same
CN201080016180.2A CN102388485B (zh) 2009-04-10 2010-04-06 包含多孔涂层的隔膜、制备该隔膜的方法以及包含该隔膜的电化学装置
US13/243,081 US8986892B2 (en) 2009-04-10 2011-09-23 Separator including porous coating layer, method for manufacturing the separator and electrochemical device including the separator
US14/622,303 US9559345B2 (en) 2009-04-10 2015-02-13 Separator including porous coating layer, method for manufacturing the separator and electrochemical device including the separator

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
KR20090031234 2009-04-10
KR10-2009-0031234 2009-04-10
KR10-2010-0030996 2010-04-05
KR1020100030996A KR101055536B1 (ko) 2009-04-10 2010-04-05 다공성 코팅층을 포함하는 세퍼레이터, 그 제조방법 및 이를 구비한 전기화학소자

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US13/243,081 Continuation US8986892B2 (en) 2009-04-10 2011-09-23 Separator including porous coating layer, method for manufacturing the separator and electrochemical device including the separator

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WO2010117195A2 WO2010117195A2 (ko) 2010-10-14
WO2010117195A3 true WO2010117195A3 (ko) 2010-12-23

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PCT/KR2010/002106 WO2010117195A2 (ko) 2009-04-10 2010-04-06 다공성 코팅층을 포함하는 세퍼레이터, 그 제조방법 및 이를 구비한 전기화학소자

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US (2) US8986892B2 (ko)
EP (1) EP2418712B1 (ko)
JP (1) JP5415609B2 (ko)
KR (1) KR101055536B1 (ko)
CN (1) CN102388485B (ko)
WO (1) WO2010117195A2 (ko)

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