JP4300172B2 - 非水電解質二次電池 - Google Patents
非水電解質二次電池 Download PDFInfo
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- JP4300172B2 JP4300172B2 JP2004278278A JP2004278278A JP4300172B2 JP 4300172 B2 JP4300172 B2 JP 4300172B2 JP 2004278278 A JP2004278278 A JP 2004278278A JP 2004278278 A JP2004278278 A JP 2004278278A JP 4300172 B2 JP4300172 B2 JP 4300172B2
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- 229910052782 aluminium Inorganic materials 0.000 claims description 9
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- 229910052744 lithium Inorganic materials 0.000 description 4
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- 238000013329 compounding Methods 0.000 description 2
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- 238000010586 diagram Methods 0.000 description 2
- JBTWLSYIZRCDFO-UHFFFAOYSA-N ethyl methyl carbonate Chemical compound CCOC(=O)OC JBTWLSYIZRCDFO-UHFFFAOYSA-N 0.000 description 2
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- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Chemical compound O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 description 2
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- BWGNESOTFCXPMA-UHFFFAOYSA-N Dihydrogen disulfide Chemical compound SS BWGNESOTFCXPMA-UHFFFAOYSA-N 0.000 description 1
- MBMLMWLHJBBADN-UHFFFAOYSA-N Ferrous sulfide Chemical compound [Fe]=S MBMLMWLHJBBADN-UHFFFAOYSA-N 0.000 description 1
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- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
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- 229910008240 SnB0.4P0.6O3.1 Inorganic materials 0.000 description 1
- 229910005790 SnSiO Inorganic materials 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
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- PFYQFCKUASLJLL-UHFFFAOYSA-N [Co].[Ni].[Li] Chemical compound [Co].[Ni].[Li] PFYQFCKUASLJLL-UHFFFAOYSA-N 0.000 description 1
- OHOIHSTWKIMQNC-UHFFFAOYSA-N [Li].[P]=O Chemical compound [Li].[P]=O OHOIHSTWKIMQNC-UHFFFAOYSA-N 0.000 description 1
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- BTFOWJRRWDOUKQ-UHFFFAOYSA-N [Si]=O.[Sn] Chemical compound [Si]=O.[Sn] BTFOWJRRWDOUKQ-UHFFFAOYSA-N 0.000 description 1
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- IEJIGPNLZYLLBP-UHFFFAOYSA-N dimethyl carbonate Chemical compound COC(=O)OC IEJIGPNLZYLLBP-UHFFFAOYSA-N 0.000 description 1
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- 229910052731 fluorine Chemical group 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- RUTXIHLAWFEWGM-UHFFFAOYSA-H iron(3+) sulfate Chemical compound [Fe+3].[Fe+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O RUTXIHLAWFEWGM-UHFFFAOYSA-H 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000011244 liquid electrolyte Substances 0.000 description 1
- 229910000625 lithium cobalt oxide Inorganic materials 0.000 description 1
- GELKBWJHTRAYNV-UHFFFAOYSA-K lithium iron phosphate Chemical compound [Li+].[Fe+2].[O-]P([O-])([O-])=O GELKBWJHTRAYNV-UHFFFAOYSA-K 0.000 description 1
- 229910021441 lithium nickel cobalt complex oxide Inorganic materials 0.000 description 1
- 229910003002 lithium salt Inorganic materials 0.000 description 1
- 159000000002 lithium salts Chemical class 0.000 description 1
- GLNWILHOFOBOFD-UHFFFAOYSA-N lithium sulfide Chemical compound [Li+].[Li+].[S-2] GLNWILHOFOBOFD-UHFFFAOYSA-N 0.000 description 1
- ACFSQHQYDZIPRL-UHFFFAOYSA-N lithium;bis(1,1,2,2,2-pentafluoroethylsulfonyl)azanide Chemical compound [Li+].FC(F)(F)C(F)(F)S(=O)(=O)[N-]S(=O)(=O)C(F)(F)C(F)(F)F ACFSQHQYDZIPRL-UHFFFAOYSA-N 0.000 description 1
- BFZPBUKRYWOWDV-UHFFFAOYSA-N lithium;oxido(oxo)cobalt Chemical compound [Li+].[O-][Co]=O BFZPBUKRYWOWDV-UHFFFAOYSA-N 0.000 description 1
- 229910001092 metal group alloy Inorganic materials 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 description 1
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- 229910052759 nickel Inorganic materials 0.000 description 1
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- 150000002891 organic anions Chemical class 0.000 description 1
- 150000002892 organic cations Chemical class 0.000 description 1
- GNRSAWUEBMWBQH-UHFFFAOYSA-N oxonickel Chemical compound [Ni]=O GNRSAWUEBMWBQH-UHFFFAOYSA-N 0.000 description 1
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- 230000001737 promoting effect Effects 0.000 description 1
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- 239000010703 silicon Substances 0.000 description 1
- LIVNPJMFVYWSIS-UHFFFAOYSA-N silicon monoxide Chemical compound [Si-]#[O+] LIVNPJMFVYWSIS-UHFFFAOYSA-N 0.000 description 1
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- HXJUTPCZVOIRIF-UHFFFAOYSA-N sulfolane Chemical compound O=S1(=O)CCCC1 HXJUTPCZVOIRIF-UHFFFAOYSA-N 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
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- TXEYQDLBPFQVAA-UHFFFAOYSA-N tetrafluoromethane Chemical compound FC(F)(F)F TXEYQDLBPFQVAA-UHFFFAOYSA-N 0.000 description 1
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- 229910052723 transition metal Inorganic materials 0.000 description 1
- 150000003624 transition metals Chemical class 0.000 description 1
- ZNOKGRXACCSDPY-UHFFFAOYSA-N tungsten trioxide Chemical compound O=[W](=O)=O ZNOKGRXACCSDPY-UHFFFAOYSA-N 0.000 description 1
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- 239000012808 vapor phase Substances 0.000 description 1
Images
Classifications
-
- 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
Description
粘着テープは、基材及び基材の両面に備わる粘着材層、又は、粘着材層のみからなる。前者は、製造工程上粘着テープを張りやすいという利点があり、後者は、その柔軟性から緩衝効果が大きいという利点がある。
σ1t1>σ2t2かつε1<ε2 (式1)
を満たすことが好ましい。
t3+t4<t2<t3+t4+t5×2 (式2)
の範囲であることが好ましい。
正極は、正極集電体と、正極集電体の片面若しくは両面に担持され、正極活物質、正極導電剤及び結着剤を含む正極層と、を有する。
集電性能を高め、集電体との接触抵抗を抑えるための正極導電剤としては、例えばアセチレンブラック、カーボンブラック、人工黒鉛、天然黒鉛等を挙げることができる。
負極は、負極集電体と、負極集電体の片面若しくは両面に担持され、負極活物質、負極導電剤および結着剤を含む負極層と、を有する。
セパレータとしては、例えば、ポリエチレン、ポリプロピレン、セルロース、またはポリフッ化ビニリデン(PVdF)を含む多孔質フィルム、合成樹脂製不織布等を挙げることができる。中でも、ポリエチレン又はポリプロピレンからなる多孔質フィルムは、一定温度において溶融し、電流を遮断することが可能であり、安全性向上の観点から好ましい。
非水電解質としては、電解質を有機溶媒に溶解することにより調整される液状非水電解質、液状電解質と高分子材料を複合化したゲル状非水電解質が挙げられる。また、リチウムイオンを含有した常温溶融塩(イオン性融体)を使用してもよい。
外装材としては、肉厚0.2mm以下のラミネートフィルムや、肉厚0.5mm以下の金属製容器が挙げられる。肉厚0.2mm以下であるとより好ましい。
正極活物質としてリチウムコバルト酸化物(LiCoO2)と、導電剤として黒鉛粉末と、結着剤としてPVdFと、を重量比で87:8:5となるように配合し、NMP溶媒に分散してスラリーを調整した後、厚さ15μmのアルミニウム箔(純度99.99%)の両面に塗布、乾燥、プレス工程を経て厚さ80μmの正極を作成した。
アクリル系粘着材のみからなり、引張強度σ2=0.05MPa、伸びε2=10の粘着テープを使用した以外は、実施例1と同様に非水電解質二次電池を作製した。
基材を、厚さ100μmのPETとし、引張強度σ2=110MPa、伸びε2=0.9の粘着テープを使用した以外は、実施例1と同様に非水電解質二次電池を作製した。
粘着材の層を薄くし、t2=100μmとし、引張強度σ2=1.9MPa、伸びε2=4の粘着テープを使用した以外は、実施例1と同様に非水電解質二次電池を作製した。
粘着テープを用いない以外は、実施例1と同様に非水電解質二次電池を作製した。
2・・・負極端子
3・・・正極
4・・・負極
5・・・セパレータ
6・・・外装材
7・・・粘着テープ
7a・・・粘着テープの基材
7b・・・粘着材層
8・・・正極集電体
9・・・負極集電体
Claims (5)
- 外装材と、
前記外装材内に収納され、負極集電体及び前記負極集電体の表面に形成された負極活物質層を有する複数の負極と、正極集電体及び前記正極集電体の表面に形成された正極活物質層を有する複数の正極と、前記負極活物質層及び前記正極活物質層に挟まれ非水電解質が充填されたセパレータと、が積み重ねられた発電要素と、
前記発電要素から突出した前記負極集電体の延部の夫々に、電気的に接続した負極端子と、
前記発電要素から突出した前記正極集電体の延部の夫々に、電気的に接続した正極端子と、
各々の前記負極集電体の延部の隙間及び各々の前記正極集電体の延部の隙間を埋める粘着テープと、を具備することを特徴とする非水電解質二次電池。 - 外装材と、
前記外装材内に収納され、負極集電体及び前記負極集電体の表面に形成された負極活物質層を有する複数の負極と、正極集電体及び前記正極集電体の表面に形成された正極活物質層を有する複数の正極と、前記負極活物質層及び前記正極活物質層に挟まれ非水電解質が充填されたセパレータと、が積み重ねられた発電要素と、
前記発電要素から突出し端が互いに結合した前記負極集電体の延部に、電気的に接続した負極端子と、
前記発電要素から突出し端が互いに結合した前記正極集電体の延部に、電気的に接続した正極端子と、
各々の前記負極集電体の延部の隙間及び各々の前記正極集電体の延部の隙間を埋める粘着テープと、を具備することを特徴とする非水電解質二次電池。 - 前記粘着テープは、粘着材のみからなることを特徴とする請求項1または請求項2に記載の非水電解質二次電池。
- 前記粘着材テープの基材は、ポリエチレンもしくはポリプロピレンからなることを特徴とする請求項1または請求項2に記載の非水電解質二次電池。
- 前記負極集電体及び前記正極集電体は、アルミニウムもしくはアルミニウム合金からなることを特徴とする請求項1乃至4のいずれか1項に記載の非水電解質二次電池。
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JP5110832B2 (ja) * | 2006-08-31 | 2012-12-26 | Fdk株式会社 | 蓄電素子の製造方法 |
JP5270852B2 (ja) | 2007-03-20 | 2013-08-21 | 株式会社東芝 | 組電池および電池パック |
JP5424322B2 (ja) * | 2009-09-08 | 2014-02-26 | Necエナジーデバイス株式会社 | 非水系電解質二次電池 |
KR101590217B1 (ko) * | 2012-11-23 | 2016-01-29 | 주식회사 엘지화학 | 전극조립체의 제조 방법 및 이를 이용하여 제조된 전극조립체 |
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