KR101822593B1 - 다공성 바인더 코팅층을 구비한 전극, 이의 제조 방법, 및 이를 포함하는 리튬 이차전지 - Google Patents
다공성 바인더 코팅층을 구비한 전극, 이의 제조 방법, 및 이를 포함하는 리튬 이차전지 Download PDFInfo
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- polyvinylidene fluoride
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- 239000011230 binding agent Substances 0.000 title claims abstract description 60
- 239000011247 coating layer Substances 0.000 title claims abstract description 30
- 238000000034 method Methods 0.000 title claims abstract description 23
- 229910052744 lithium Inorganic materials 0.000 title abstract description 17
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title abstract description 15
- 238000002360 preparation method Methods 0.000 title 1
- 239000010410 layer Substances 0.000 claims abstract description 28
- 239000011149 active material Substances 0.000 claims abstract description 19
- 239000000839 emulsion Substances 0.000 claims abstract description 17
- 238000007650 screen-printing Methods 0.000 claims abstract description 14
- 239000002612 dispersion medium Substances 0.000 claims abstract description 12
- 239000011248 coating agent Substances 0.000 claims abstract description 10
- 238000000576 coating method Methods 0.000 claims abstract description 10
- 229920000131 polyvinylidene Polymers 0.000 claims description 22
- 239000002033 PVDF binder Substances 0.000 claims description 16
- 229920002981 polyvinylidene fluoride Polymers 0.000 claims description 16
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 claims description 12
- 238000001035 drying Methods 0.000 claims description 11
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical group CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 9
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 claims description 9
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 claims description 9
- 229920000642 polymer Polymers 0.000 claims description 9
- 238000004804 winding Methods 0.000 claims description 8
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 claims description 6
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 239000005977 Ethylene Substances 0.000 claims description 4
- XDTMQSROBMDMFD-UHFFFAOYSA-N Cyclohexane Chemical compound C1CCCCC1 XDTMQSROBMDMFD-UHFFFAOYSA-N 0.000 claims description 3
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- 239000012790 adhesive layer Substances 0.000 abstract description 5
- 239000010409 thin film Substances 0.000 abstract description 4
- 230000006866 deterioration Effects 0.000 abstract 1
- 239000000758 substrate Substances 0.000 description 8
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 229910052759 nickel Inorganic materials 0.000 description 4
- 239000011255 nonaqueous electrolyte Substances 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- 229910003002 lithium salt Inorganic materials 0.000 description 3
- 239000012528 membrane Substances 0.000 description 3
- 229920005596 polymer binder Polymers 0.000 description 3
- 239000002491 polymer binding agent Substances 0.000 description 3
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 239000003792 electrolyte Substances 0.000 description 2
- 239000011888 foil Substances 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 229910001416 lithium ion Inorganic materials 0.000 description 2
- 159000000002 lithium salts Chemical group 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910052684 Cerium Inorganic materials 0.000 description 1
- 229910020366 ClO 4 Inorganic materials 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910012851 LiCoO 2 Inorganic materials 0.000 description 1
- 229910011281 LiCoPO 4 Inorganic materials 0.000 description 1
- 229910010707 LiFePO 4 Inorganic materials 0.000 description 1
- 229910015643 LiMn 2 O 4 Inorganic materials 0.000 description 1
- 229910013716 LiNi Inorganic materials 0.000 description 1
- 229910013210 LiNiMnCoO Inorganic materials 0.000 description 1
- 229910013290 LiNiO 2 Inorganic materials 0.000 description 1
- 229910018095 Ni-MH Inorganic materials 0.000 description 1
- 229910018477 Ni—MH Inorganic materials 0.000 description 1
- 108010000020 Platelet Factor 3 Proteins 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910021383 artificial graphite Inorganic materials 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000003575 carbonaceous material Substances 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- 239000008151 electrolyte solution Substances 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 125000002573 ethenylidene group Chemical group [*]=C=C([H])[H] 0.000 description 1
- XUCNUKMRBVNAPB-UHFFFAOYSA-N fluoroethene Chemical group FC=C XUCNUKMRBVNAPB-UHFFFAOYSA-N 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 239000010954 inorganic particle Substances 0.000 description 1
- -1 lithium salt anion Chemical class 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 229910021382 natural graphite Inorganic materials 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 238000005191 phase separation Methods 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
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Classifications
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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
- H01M4/0414—Methods of deposition of the material by screen printing
-
- 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
- H01M4/621—Binders
- H01M4/622—Binders being polymers
- H01M4/623—Binders being polymers fluorinated polymers
-
- 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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or 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
- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
-
- 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
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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
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M2004/021—Physical characteristics, e.g. porosity, surface area
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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- Electrochemistry (AREA)
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- Materials Engineering (AREA)
- Battery Electrode And Active Subsutance (AREA)
- Secondary Cells (AREA)
Abstract
Description
도 1은 일반적인 스크린 인쇄 공정을 개략적으로 도시한 모식도이다.
도 2는 본 발명의 일 실시예에 따라 전극의 제조 방법을 개략적으로 도시한 모식도이다.
도 3은 본 발명의 일 실시예에 따른 전극의 제조방법의 순서도이다.
도 4는 본 발명의 일 실시예에 따른 전극의 제조방법에 포함된 바인더 코팅층 형성단계의 순서도이다.
20 : 페이스트
30 : 스쿼지 또는 롤러
40 : 메쉬롤
50 : 전극
Claims (16)
- 삭제
- 삭제
- 삭제
- 삭제
- (S10) 집전체의 적어도 일면에 형성된 활물질층을 포함하는 전극을 준비하는 단계;
(S20) 바인더를 분산매에 첨가하여 바인더 에멀션을 수득하는 단계; 및
(S30) 상기 전극의 활물질층 표면에 단계 (S20)에서 수득한 상기 바인더 에멀션을 메쉬(mesh) 롤(roll)을 이용하는 스크린 인쇄 방식으로 코팅하여 다공성 구조의 바인더 코팅층을 형성하는 단계를 포함하고,
상기 단계 (S30)이
(S31) 상기 전극을 활물질층이 상기 메쉬 롤과 대면하도록 배치하는 단계,
(S32) 상기 메쉬 롤을 회전시키면서 상기 전극을 메쉬 롤의 회전 방향의 역방향으로 와인딩하는 단계, 및
(S33) 상기 메쉬 롤의 회전 및 상기 전극의 와인딩 동안에 상기 바인더 에멀션을 투입하여 상기 전극의 활물질층 표면에 바인더 에멀션을 메쉬 패턴으로 코팅하는 단계를 포함하며, 코팅된 메쉬 패턴이 상기 메쉬 롤의 회전 및 상기 전극의 와인딩 동안에 건조되는 것을 특징으로 하는, 다공성 바인더 코팅층을 구비하는 전극의 제조 방법. - 삭제
- 삭제
- 삭제
- 제5항에 있어서,
상기 건조가 25 내지 300℃ 에서 수행되는 것을 특징으로 하는 방법. - 제 5항에 있어서,
상기 건조가 기류(air flow)를 이용하여 수행되며, 상기 기류를 형성하는 수증기량이 1 내지 589 g/m3 인 것을 특징으로 하는 방법. - 제5항에 있어서,
상기 바인더 코팅층이 0.5 내지 5 ㎛의 두께로 형성되는 것을 특징으로 하는 방법. - 제5항에 있어서,
단계 (S20)에서, 상기 바인더와 상기 분산매는 1:99 내지 99:1의 중량비로 사용되는 것을 특징으로 하는 방법. - 제5항에 있어서,
상기 바인더가 폴리비닐리덴 플루오라이드(PVdF)계 고분자인 것을 특징으로 하는 방법. - 제13항에 있어서,
상기 PVdF계 고분자가 폴리비닐리덴 플루로라이드-코-헥사플루오로프로필렌, 폴리비닐리덴 플루오라이드-코-트라이클로로에틸렌, 폴리비닐리덴 플루로라이드-코-테트라플루오로에틸렌, 폴리비닐리덴 플루로라이드-코-트리플루오로에틸렌, 폴리비닐리덴 플루로라이드-코-트리플루오로클로로에틸렌, 폴리비닐리덴 플루로라이드-코-에틸렌, 및 이들 중 2 이상의 혼합물로 이루어진 군으로부터 선택되는 것을 특징으로 하는 방법. - 제5항에 있어서,
상기 분산매가 아세톤, 테트라하이드로퓨란, 메틸렌클로라이드, 클로로포름, 다이메틸포름아미드, N-메틸-2-피롤리돈(NMP), 사이클로헥산, 물 또는 이들의 혼합물인 것을 특징으로 하는 방법. - 삭제
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KR1020150036784A KR101822593B1 (ko) | 2015-03-17 | 2015-03-17 | 다공성 바인더 코팅층을 구비한 전극, 이의 제조 방법, 및 이를 포함하는 리튬 이차전지 |
US15/544,451 US10468663B2 (en) | 2015-03-17 | 2016-03-11 | Electrode with porous binder coating layer, method for manufacturing the same, and lithium secondary battery comprising the same |
PCT/KR2016/002453 WO2016148447A1 (ko) | 2015-03-17 | 2016-03-11 | 다공성 바인더 코팅층을 구비한 전극, 이의 제조 방법, 및 이를 포함하는 리튬 이차전지 |
JP2017537418A JP6607947B2 (ja) | 2015-03-17 | 2016-03-11 | 多孔性バインダーコーティング層を備えた電極、その製造方法及びそれを含むリチウム二次電池 |
CN201680007183.7A CN107431187B (zh) | 2015-03-17 | 2016-03-11 | 具有多孔粘合剂涂层的电极、其制造方法和包括它的电池 |
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KR102570263B1 (ko) * | 2016-10-14 | 2023-08-24 | 삼성에스디아이 주식회사 | 리튬 전지용 전극, 이를 포함하는 리튬 전지, 및 상기 리튬 전지의 제조방법 |
EP3664196A1 (en) | 2018-12-06 | 2020-06-10 | Nederlandse Organisatie voor toegepast- natuurwetenschappelijk onderzoek TNO | Battery cells comprising elastic compressible functional layers and manufacturing process |
CN112840480B (zh) * | 2019-01-28 | 2024-06-18 | 株式会社Lg新能源 | 负极和包含所述负极的锂二次电池 |
CN112375169B (zh) * | 2020-07-31 | 2022-08-02 | 万向一二三股份公司 | 一种粘结剂合成方法 |
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