JP6793720B2 - カーボンナノチューブ分散液およびその製造方法 - Google Patents
カーボンナノチューブ分散液およびその製造方法 Download PDFInfo
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- JP6793720B2 JP6793720B2 JP2018512190A JP2018512190A JP6793720B2 JP 6793720 B2 JP6793720 B2 JP 6793720B2 JP 2018512190 A JP2018512190 A JP 2018512190A JP 2018512190 A JP2018512190 A JP 2018512190A JP 6793720 B2 JP6793720 B2 JP 6793720B2
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- Prior art keywords
- carbon nanotube
- weight
- dispersion liquid
- nitrile rubber
- partially hydrogenated
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims description 168
- 239000002041 carbon nanotube Substances 0.000 title claims description 164
- 229910021393 carbon nanotube Inorganic materials 0.000 title claims description 164
- 239000006185 dispersion Substances 0.000 title claims description 89
- 239000007788 liquid Substances 0.000 title claims description 63
- 238000004519 manufacturing process Methods 0.000 title claims description 26
- 229920000459 Nitrile rubber Polymers 0.000 claims description 70
- 239000002612 dispersion medium Substances 0.000 claims description 41
- 239000011267 electrode slurry Substances 0.000 claims description 31
- 239000002245 particle Substances 0.000 claims description 28
- 150000001993 dienes Chemical class 0.000 claims description 20
- 239000011230 binding agent Substances 0.000 claims description 17
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- 238000009826 distribution Methods 0.000 claims description 13
- 239000000126 substance Substances 0.000 claims description 11
- 239000002131 composite material Substances 0.000 claims description 6
- 239000013543 active substance Substances 0.000 claims description 5
- 238000000465 moulding Methods 0.000 claims description 4
- 229910052799 carbon Inorganic materials 0.000 claims description 2
- 239000002071 nanotube Substances 0.000 claims 1
- 238000000034 method Methods 0.000 description 17
- 239000007772 electrode material Substances 0.000 description 10
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- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 1
- SBASXUCJHJRPEV-UHFFFAOYSA-N 2-(2-methoxyethoxy)ethanol Chemical compound COCCOCCO SBASXUCJHJRPEV-UHFFFAOYSA-N 0.000 description 1
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- GTAKOUPXIUWZIA-UHFFFAOYSA-N 2-[2-[2-(2-ethoxyethoxy)ethoxy]ethoxy]ethanol Chemical compound CCOCCOCCOCCOCCO GTAKOUPXIUWZIA-UHFFFAOYSA-N 0.000 description 1
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- GYDSPAVLTMAXHT-UHFFFAOYSA-N pentyl 2-methylprop-2-enoate Chemical compound CCCCCOC(=O)C(C)=C GYDSPAVLTMAXHT-UHFFFAOYSA-N 0.000 description 1
- ULDDEWDFUNBUCM-UHFFFAOYSA-N pentyl prop-2-enoate Chemical compound CCCCCOC(=O)C=C ULDDEWDFUNBUCM-UHFFFAOYSA-N 0.000 description 1
- PNJWIWWMYCMZRO-UHFFFAOYSA-N pent‐4‐en‐2‐one Natural products CC(=O)CC=C PNJWIWWMYCMZRO-UHFFFAOYSA-N 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000003495 polar organic solvent Substances 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001223 polyethylene glycol Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 229920000166 polytrimethylene carbonate Polymers 0.000 description 1
- 239000001267 polyvinylpyrrolidone Substances 0.000 description 1
- 239000007774 positive electrode material Substances 0.000 description 1
- 239000011164 primary particle Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- BOQSSGDQNWEFSX-UHFFFAOYSA-N propan-2-yl 2-methylprop-2-enoate Chemical compound CC(C)OC(=O)C(C)=C BOQSSGDQNWEFSX-UHFFFAOYSA-N 0.000 description 1
- LYBIZMNPXTXVMV-UHFFFAOYSA-N propan-2-yl prop-2-enoate Chemical compound CC(C)OC(=O)C=C LYBIZMNPXTXVMV-UHFFFAOYSA-N 0.000 description 1
- 229960000380 propiolactone Drugs 0.000 description 1
- NHARPDSAXCBDDR-UHFFFAOYSA-N propyl 2-methylprop-2-enoate Chemical compound CCCOC(=O)C(C)=C NHARPDSAXCBDDR-UHFFFAOYSA-N 0.000 description 1
- PNXMTCDJUBJHQJ-UHFFFAOYSA-N propyl prop-2-enoate Chemical compound CCCOC(=O)C=C PNXMTCDJUBJHQJ-UHFFFAOYSA-N 0.000 description 1
- 239000011163 secondary particle Substances 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
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- 229940080264 sodium dodecylbenzenesulfonate Drugs 0.000 description 1
- DAJSVUQLFFJUSX-UHFFFAOYSA-M sodium;dodecane-1-sulfonate Chemical compound [Na+].CCCCCCCCCCCCS([O-])(=O)=O DAJSVUQLFFJUSX-UHFFFAOYSA-M 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000000600 sorbitol Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
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- ZIBGPFATKBEMQZ-UHFFFAOYSA-N triethylene glycol Chemical compound OCCOCCOCCO ZIBGPFATKBEMQZ-UHFFFAOYSA-N 0.000 description 1
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- 229920002554 vinyl polymer Polymers 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
- 229920003169 water-soluble polymer Polymers 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
- 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
- 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
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/15—Nano-sized carbon materials
- C01B32/158—Carbon nanotubes
- C01B32/168—After-treatment
- C01B32/174—Derivatisation; Solubilisation; Dispersion in solvents
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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
- H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
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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
- H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
- H01M4/621—Binders
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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
- H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
- H01M4/624—Electric conductive fillers
- H01M4/625—Carbon or graphite
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/51—Particles with a specific particle size distribution
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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
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion 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
- 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
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- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Nanotechnology (AREA)
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- Carbon And Carbon Compounds (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Description
[数式1]
RDB(重量%)=BD重量/(BD重量+HBD重量)×100
前記数式1において、BDは共役ジエン由来構造単位を、HBDは水素化された共役ジエン由来構造単位をそれぞれ意味する。
[数式1]
RDB(重量%)=BD重量/(BD重量+HBD重量)×100
前記数式1において、BDは共役ジエン由来構造単位を、HBDは水素化された共役ジエン由来構造単位をそれぞれ意味する。
N−メチルピロリドン(NMP)溶媒に、単位体の直径10−30nm、BET200m2/gのエンタングル型カーボンナノチューブおよび下記表1の部分水素化ニトリルゴムを、下記表2のような含有量で混合してカーボンナノチューブ分散液を製造した。表1の重量%は、部分水素化ニトリルゴム100重量%を基準としたものであり、表2の重量%は、カーボンナノチューブ分散液100重量%を基準としたものである。この時、ビーズミル(beads mill)を用いた。製造された分散液の分散粒径および粘度を測定して、下記表3に示した。
−検出器:Malvern社のViscotek TDA302RID
−カラム:Agilent社のPLgel Olexis2つとPLgel mixed C1つ使用
−溶媒:THF
−カラム温度:40℃
−流速:1ml/min
−サンプルの濃度:1mg/mL、100μL注入
−標準試料:ポリスチレン(Mp:3900000、723000、316500、70950、31400、8450、3940、485)
分析プログラムは、Malvern社のOmmiSECを用い、GPCによって重量平均分子量(Mw)、数平均分子量(Mn)を求めた後、重量平均分子量/数平均分子量(Mw/Mn)から分子量分布(PDI)を計算した。
接着力測定のために、前記のように製造された正極極板(電池の製造前)を15mmX150mmの同じ大きさに切ってスライドガラスに固定させた後、集電体から剥がして180度剥がし強度を測定した。評価は、5個以上の剥がし強度を測定して平均値として定めた。接着力測定の結果を下記表3に示した。
前記製造された電池を、常温で1.0C/1.0C充放電を3回進行させ、最後の放電容量基準でSOCを設定した。SOC50において、6.5Cで放電パルス(pulse)を加えて10秒抵抗を測定した。
Claims (11)
- エンタングル型カーボンナノチューブ、分散媒、および下記数式1により計算される残留二重結合(RDB)値が0.5〜40重量%の部分水素化ニトリルゴムを含むカーボンナノチューブ分散液において、
前記カーボンナノチューブ分散液全体100重量%を基準として前記エンタングル型カーボンナノチューブを1〜10重量%含み、
前記エンタングル型カーボンナノチューブ100重量部に対して前記部分水素化ニトリルゴム20〜30重量部含み、
前記エンタングル型カーボンナノチューブの分散粒径は、粒径分布のD50が2〜5μmであり、D10が0.5〜1.5μmであり、D90が6〜10μmであることを特徴とするカーボンナノチューブ分散液:
[数式1]
RDB(重量%)=BD重量/(BD重量+HBD重量)×100
前記数式1において、BDは共役ジエン由来構造単位を、HBDは水素化された共役ジエン由来構造単位をそれぞれ意味する。 - 前記部分水素化ニトリルゴムは、α,β−不飽和ニトリル由来構造単位、共役ジエン由来構造単位、および水素化された共役ジエン由来構造単位を含むものである、請求項1に記載のカーボンナノチューブ分散液。
- 前記部分水素化ニトリルゴムは、部分水素化ニトリルゴムの総重量に対して、前記α,β−不飽和ニトリル由来構造単位が20〜50重量%含まれるものである、請求項2に記載のカーボンナノチューブ分散液。
- 前記カーボンナノチューブ分散液は、前記エンタングル型カーボンナノチューブの表面に前記部分水素化ニトリルゴムが導入されたカーボンナノチューブ複合体を含むものである、請求項1〜3のいずれか1項に記載のカーボンナノチューブ分散液。
- 前記エンタングル型カーボンナノチューブの分散粒径は、粒径分布のD50が3〜5μmであり、D10が0.9〜1.3μmであり、D90が7.5〜10μmである、請求項1〜4のいずれか1項に記載のカーボンナノチューブ分散液。
- 前記部分水素化ニトリルゴムは、下記化学式1の単位、下記化学式2の単位、および下記化学式3の単位を含むものである、請求項1〜5のいずれか1項に記載のカーボンナノチューブ分散液:
- 前記部分水素化ニトリルゴムは、重量平均分子量が10,000〜700,000g/molである、請求項1〜6のいずれか1項に記載のカーボンナノチューブ分散液。
- 前記部分水素化ニトリルゴムは、2〜6の多分散指数PDI(Mw/Mn)の比を有するものである、請求項1〜7のいずれか1項に記載のカーボンナノチューブ分散液。
- 請求項1〜8のいずれか1項に記載のカーボンナノチューブ分散液の製造方法であって、エンタングル型カーボンナノチューブ、分散媒、および前述の部分水素化ニトリルゴムを混合するステップを含む、カーボンナノチューブ分散液の製造方法。
- 請求項1〜8のいずれか1項に記載のカーボンナノチューブ分散液、電極活性物質、およびバインダー樹脂を混合するステップを含む電極スラリーの製造方法。
- 請求項1〜8のいずれか1項に記載のカーボンナノチューブ分散液、電極活性物質、およびバインダー樹脂を混合して電極スラリーを製造するステップと、前記電極スラリーを用いて電極を成形するステップとを含む電極の製造方法。
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JP6413242B2 (ja) | 2014-01-15 | 2018-10-31 | 日本ゼオン株式会社 | 二次電池正極用スラリーの製造方法、二次電池用正極の製造方法、及び二次電池の製造方法 |
KR102022399B1 (ko) * | 2015-09-09 | 2019-09-18 | 주식회사 엘지화학 | 탄소 나노튜브 분산액 및 이의 제조방법 |
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EP3355392A1 (en) | 2018-08-01 |
US10686185B2 (en) | 2020-06-16 |
KR101888749B1 (ko) | 2018-08-16 |
EP3355392A4 (en) | 2018-10-24 |
JP2018534220A (ja) | 2018-11-22 |
EP3355392B1 (en) | 2019-11-13 |
PL3355392T3 (pl) | 2020-05-18 |
CN108370037B (zh) | 2021-02-23 |
WO2017052087A1 (ko) | 2017-03-30 |
KR20170037510A (ko) | 2017-04-04 |
CN108370037A (zh) | 2018-08-03 |
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