JP7061120B2 - 耐屈曲性に優れた二次電池用電解銅箔及びその製造方法 - Google Patents
耐屈曲性に優れた二次電池用電解銅箔及びその製造方法 Download PDFInfo
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title claims description 135
- 239000011889 copper foil Substances 0.000 title claims description 121
- 238000004519 manufacturing process Methods 0.000 title claims description 30
- 238000005452 bending Methods 0.000 title description 30
- 229910052785 arsenic Inorganic materials 0.000 claims description 35
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 claims description 35
- 229910017052 cobalt Inorganic materials 0.000 claims description 32
- 239000010941 cobalt Substances 0.000 claims description 32
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 32
- 238000007747 plating Methods 0.000 claims description 28
- 238000009713 electroplating Methods 0.000 claims description 20
- 238000000034 method Methods 0.000 claims description 20
- 239000010949 copper Substances 0.000 claims description 16
- 229910052802 copper Inorganic materials 0.000 claims description 14
- 238000012360 testing method Methods 0.000 claims description 12
- 239000006182 cathode active material Substances 0.000 claims description 10
- 239000011248 coating agent Substances 0.000 claims description 6
- 238000000576 coating method Methods 0.000 claims description 6
- 239000000243 solution Substances 0.000 description 19
- 230000000052 comparative effect Effects 0.000 description 15
- 239000011149 active material Substances 0.000 description 13
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 8
- 238000007599 discharging Methods 0.000 description 8
- 239000008151 electrolyte solution Substances 0.000 description 8
- 230000000704 physical effect Effects 0.000 description 8
- 239000000654 additive Substances 0.000 description 7
- 239000000853 adhesive Substances 0.000 description 7
- 230000001070 adhesive effect Effects 0.000 description 7
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 6
- JPVYNHNXODAKFH-UHFFFAOYSA-N Cu2+ Chemical compound [Cu+2] JPVYNHNXODAKFH-UHFFFAOYSA-N 0.000 description 6
- 230000008859 change Effects 0.000 description 6
- 239000000460 chlorine Substances 0.000 description 6
- 229910052801 chlorine Inorganic materials 0.000 description 6
- 229910001431 copper ion Inorganic materials 0.000 description 6
- 239000011888 foil Substances 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 239000013078 crystal Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 230000002265 prevention Effects 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 230000008602 contraction Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- 230000003746 surface roughness Effects 0.000 description 3
- 238000004381 surface treatment Methods 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005868 electrolysis reaction Methods 0.000 description 2
- 239000003792 electrolyte Substances 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 238000001095 inductively coupled plasma mass spectrometry Methods 0.000 description 2
- 238000009864 tensile test Methods 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- 229910021591 Copper(I) chloride Inorganic materials 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 229910000978 Pb alloy Inorganic materials 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- -1 and the ratio of TOC Chemical compound 0.000 description 1
- 239000006183 anode active material Substances 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 229910000365 copper sulfate Inorganic materials 0.000 description 1
- OXBLHERUFWYNTN-UHFFFAOYSA-M copper(I) chloride Chemical compound [Cu]Cl OXBLHERUFWYNTN-UHFFFAOYSA-M 0.000 description 1
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- HTXDPTMKBJXEOW-UHFFFAOYSA-N dioxoiridium Chemical compound O=[Ir]=O HTXDPTMKBJXEOW-UHFFFAOYSA-N 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910000457 iridium oxide Inorganic materials 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 229920001690 polydopamine Polymers 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C9/00—Alloys based on copper
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D3/00—Electroplating: Baths therefor
- C25D3/02—Electroplating: Baths therefor from solutions
- C25D3/38—Electroplating: Baths therefor from solutions of copper
-
- 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
- H01M4/64—Carriers or collectors
- H01M4/66—Selection of materials
- H01M4/661—Metal or alloys, e.g. alloy coatings
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D1/00—Electroforming
- C25D1/04—Wires; Strips; Foils
-
- 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
- H01M4/0404—Methods of deposition of the material by coating on electrode collectors
-
- 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
- H01M4/0438—Processes of manufacture in general by electrochemical processing
- H01M4/045—Electrochemical coating; Electrochemical impregnation
- H01M4/0452—Electrochemical coating; Electrochemical impregnation from solutions
-
- 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
- H01M4/134—Electrodes based on metals, Si or alloys
-
- 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
- H01M4/1395—Processes of manufacture of electrodes based on metals, Si or alloys
-
- 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
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/38—Selection of substances as active materials, active masses, active liquids of elements or alloys
-
- 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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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- General Chemical & Material Sciences (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Cell Electrode Carriers And Collectors (AREA)
- Battery Electrode And Active Subsutance (AREA)
Description
前記電解銅箔は、MIT屈曲性テストでの屈曲回数が110回以上であることを特徴とする。
前記電解銅箔は、MIT屈曲性テストでの屈曲回数が110回以上であることを特徴とする。
前記ステップ(2)を介する電解めっきによって形成された電解銅箔は、前記ドラムと接する一面と、前記一面の反対面である他面からなり、前記一面及び他面のRz粗さは、2.0μm以下であることを特徴とする。
前記TOCとコバルト及びヒ素の割合が1.30未満である場合、めっき液に投入されるコバルト及びヒ素の含有量が増加して、めっき液内のTOCが、グレインが異常成長するのを防止する効果を抑制するので、好ましくなく、前記割合が1.30を超える場合、電解銅箔内の過多なTOC含有量によりグレイン内に応力が発生して、めっき後、電解銅箔内のグレインが異常成長して、耐屈曲性に有利な結晶構造が形成されることが妨げられる。従って、二次電池用電解銅箔の耐屈曲性を向上するためには、コバルト及びヒ素とTOCの割合が前記式1のように1.30乃至1.55の間の範囲を維持することが好ましい。
(実施例1)
銅イオン100g/L、硫酸110g/L、塩素30ppm、TOC340ppm、コバルト0.025g/L及びヒ素0.045g/L(コバルト及びヒ素の合計が0.775g/Lである)を含むめっき液を用意して、50℃、90ASDの電流密度で、ドラムを利用して電解めっきを実行し、電解めっきによって形成された電解銅箔に陰極活物質をコーティングした。
めっき液内に含まれるTOCの濃度、コバルト及びヒ素の量を下記表3のように実行することを除いて実施例1と同様に製造した。
比較例1乃至比較例4は、めっき液の製造の時、TOCの濃度、コバルト及びヒ素の量を下記表3のように実行することを除いて実施例1と同じ条件で電解銅箔を製造した。
1)状態:原箔
2)屈曲半径(R):0.38mm
3)屈曲角度:135°
4)屈曲速度:175回/分
5)荷重(load):500g
電池評価条件は、下記のように設定して実験し、セル(Cell)の設計、陽極、陰極、セパレーター(separator)、電解液の条件は、下記表1のように設定して実験した。
1)定電流充電:電流値1C、充電終止電圧4.2V
2)20分間休止
3)定電流放電:電流値1C、充電終止電圧:2.5V cut off
4)1C=487mAh
5)Cycle:300cycle評価、温度:55℃
Claims (6)
- 二次電池用電解銅箔の製造方法であって、
(1)銅、TOC、コバルト及びヒ素を含むめっき液を用意するステップと、
(2)温度が30℃乃至70℃である条件で、電流密度30ASD乃至150ASDを加え、ドラムを利用して電解めっきを実行するステップと、及び
(3)前記電解めっきによって形成された電解銅箔に陰極活物質をコーティングするステップとを含み、
ここで、前記めっき液中に含まれるTOCの濃度は、100ppm以上であり、前記めっき液中に含まれるコバルトの濃度は、1mg/L乃至50mg/Lであり、前記めっき液中に含まれるヒ素の濃度は、ヒ素は10mg/L乃至80mg/Lであり、
前記電解銅箔に含まれるTOCとコバルト及びヒ素の割合は、下記式1に従い、
下記式1のTOCとコバルト及びヒ素は、質量比である、
前記二次電池用電解銅箔の製造方法。
式1:TOC/(コバルト+ヒ素)=1.30~1.55 - 前記電解銅箔は、MIT屈曲性テストでの屈曲回数が110回以上である、
請求項1に記載の二次電池用電解銅箔の製造方法。 - 前記ステップ(2)を介する電解めっきによって形成された電解銅箔は、前記ドラムと接する一面と、前記一面の反対面である他面からなり、
前記一面及び他面のRz粗さは、2.0μm以下である、
請求項1に記載の二次電池用電解銅箔の製造方法。 - 前記電解銅箔の引張強度は、30kgf/mm2乃至51kgf/mm2である、
請求項1に記載の二次電池用電解銅箔の製造方法。 - 前記電解銅箔の延伸率は、2%乃至15%である、
請求項1に記載の二次電池用電解銅箔の製造方法。 - 前記電解銅箔の厚さは、4μm乃至10μmである、
請求項2に記載の二次電池用電解銅箔の製造方法。
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KR1020160150362A KR101734840B1 (ko) | 2016-11-11 | 2016-11-11 | 내굴곡성이 우수한 이차전지용 전해동박 및 그의 제조방법 |
KR10-2016-0150362 | 2016-11-11 | ||
PCT/KR2017/003374 WO2018088645A1 (ko) | 2016-11-11 | 2017-03-28 | 내굴곡성이 우수한 이차전지용 전해동박 및 그의 제조방법 |
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US (2) | US11142838B2 (ja) |
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US11142838B2 (en) | 2021-10-12 |
EP3540836A1 (en) | 2019-09-18 |
TW201818594A (zh) | 2018-05-16 |
TWI614933B (zh) | 2018-02-11 |
JP2022050471A (ja) | 2022-03-30 |
WO2018088645A1 (ko) | 2018-05-17 |
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