JP4688527B2 - リチウム二次電池 - Google Patents
リチウム二次電池 Download PDFInfo
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- JP4688527B2 JP4688527B2 JP2005064877A JP2005064877A JP4688527B2 JP 4688527 B2 JP4688527 B2 JP 4688527B2 JP 2005064877 A JP2005064877 A JP 2005064877A JP 2005064877 A JP2005064877 A JP 2005064877A JP 4688527 B2 JP4688527 B2 JP 4688527B2
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- positive electrode
- negative electrode
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- secondary battery
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- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims description 31
- 229910052744 lithium Inorganic materials 0.000 title claims description 31
- 239000007774 positive electrode material Substances 0.000 claims description 12
- 238000007599 discharging Methods 0.000 claims description 10
- 229910052782 aluminium Inorganic materials 0.000 description 34
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 33
- 239000011888 foil Substances 0.000 description 32
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 31
- 229910001416 lithium ion Inorganic materials 0.000 description 31
- 239000000203 mixture Substances 0.000 description 18
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 13
- 239000011889 copper foil Substances 0.000 description 13
- 238000004804 winding Methods 0.000 description 9
- 239000007773 negative electrode material Substances 0.000 description 8
- 230000007423 decrease Effects 0.000 description 7
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 6
- 239000003792 electrolyte Substances 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- -1 polypropylene Polymers 0.000 description 6
- 238000003466 welding Methods 0.000 description 6
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 5
- 239000011255 nonaqueous electrolyte Substances 0.000 description 5
- 239000002033 PVDF binder Substances 0.000 description 4
- 239000011149 active material Substances 0.000 description 4
- 239000011230 binding agent Substances 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 239000013078 crystal Substances 0.000 description 4
- 238000011161 development Methods 0.000 description 4
- 230000014759 maintenance of location Effects 0.000 description 4
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 4
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 3
- KMTRUDSVKNLOMY-UHFFFAOYSA-N Ethylene carbonate Chemical compound O=C1OCCO1 KMTRUDSVKNLOMY-UHFFFAOYSA-N 0.000 description 3
- 229910003481 amorphous carbon Inorganic materials 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000012046 mixed solvent Substances 0.000 description 3
- 229910052759 nickel Inorganic materials 0.000 description 3
- 239000003960 organic solvent Substances 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- YEJRWHAVMIAJKC-UHFFFAOYSA-N 4-Butyrolactone Chemical compound O=C1CCCO1 YEJRWHAVMIAJKC-UHFFFAOYSA-N 0.000 description 2
- XTHFKEDIFFGKHM-UHFFFAOYSA-N Dimethoxyethane Chemical compound COCCOC XTHFKEDIFFGKHM-UHFFFAOYSA-N 0.000 description 2
- 229910013870 LiPF 6 Inorganic materials 0.000 description 2
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 2
- 239000005062 Polybutadiene Substances 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 2
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 2
- OJIJEKBXJYRIBZ-UHFFFAOYSA-N cadmium nickel Chemical compound [Ni].[Cd] OJIJEKBXJYRIBZ-UHFFFAOYSA-N 0.000 description 2
- IEJIGPNLZYLLBP-UHFFFAOYSA-N dimethyl carbonate Chemical compound COC(=O)OC IEJIGPNLZYLLBP-UHFFFAOYSA-N 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000008151 electrolyte solution Substances 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229910021445 lithium manganese complex oxide Inorganic materials 0.000 description 2
- 229910003002 lithium salt Inorganic materials 0.000 description 2
- 159000000002 lithium salts Chemical class 0.000 description 2
- 229910052748 manganese Inorganic materials 0.000 description 2
- 239000011572 manganese Substances 0.000 description 2
- 229920002857 polybutadiene Polymers 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- BQCIDUSAKPWEOX-UHFFFAOYSA-N 1,1-Difluoroethene Chemical compound FC(F)=C BQCIDUSAKPWEOX-UHFFFAOYSA-N 0.000 description 1
- LZDKZFUFMNSQCJ-UHFFFAOYSA-N 1,2-diethoxyethane Chemical compound CCOCCOCC LZDKZFUFMNSQCJ-UHFFFAOYSA-N 0.000 description 1
- OFHQVNFSKOBBGG-UHFFFAOYSA-N 1,2-difluoropropane Chemical compound CC(F)CF OFHQVNFSKOBBGG-UHFFFAOYSA-N 0.000 description 1
- WNXJIVFYUVYPPR-UHFFFAOYSA-N 1,3-dioxolane Chemical compound C1COCO1 WNXJIVFYUVYPPR-UHFFFAOYSA-N 0.000 description 1
- PPDFQRAASCRJAH-UHFFFAOYSA-N 2-methylthiolane 1,1-dioxide Chemical compound CC1CCCS1(=O)=O PPDFQRAASCRJAH-UHFFFAOYSA-N 0.000 description 1
- SBUOHGKIOVRDKY-UHFFFAOYSA-N 4-methyl-1,3-dioxolane Chemical compound CC1COCO1 SBUOHGKIOVRDKY-UHFFFAOYSA-N 0.000 description 1
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 1
- 229920002943 EPDM rubber Polymers 0.000 description 1
- 239000001856 Ethyl cellulose Substances 0.000 description 1
- ZZSNKZQZMQGXPY-UHFFFAOYSA-N Ethyl cellulose Chemical compound CCOCC1OC(OC)C(OCC)C(OCC)C1OC1C(O)C(O)C(OC)C(CO)O1 ZZSNKZQZMQGXPY-UHFFFAOYSA-N 0.000 description 1
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 description 1
- 229910015015 LiAsF 6 Inorganic materials 0.000 description 1
- 229910015044 LiB Inorganic materials 0.000 description 1
- 229910013063 LiBF 4 Inorganic materials 0.000 description 1
- 229910013684 LiClO 4 Inorganic materials 0.000 description 1
- 229920000459 Nitrile rubber Polymers 0.000 description 1
- 239000000020 Nitrocellulose Substances 0.000 description 1
- 239000004642 Polyimide Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 241000156302 Porcine hemagglutinating encephalomyelitis virus Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 229910021383 artificial graphite Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- MTAZNLWOLGHBHU-UHFFFAOYSA-N butadiene-styrene rubber Chemical compound C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 description 1
- 229920005549 butyl rubber Polymers 0.000 description 1
- 239000003575 carbonaceous material Substances 0.000 description 1
- YACLQRRMGMJLJV-UHFFFAOYSA-N chloroprene Chemical compound ClC(=C)C=C YACLQRRMGMJLJV-UHFFFAOYSA-N 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 238000003776 cleavage reaction Methods 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 239000006258 conductive agent Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 125000004093 cyano group Chemical group *C#N 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229920001249 ethyl cellulose Polymers 0.000 description 1
- 235000019325 ethyl cellulose Nutrition 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- XUCNUKMRBVNAPB-UHFFFAOYSA-N fluoroethene Chemical compound FC=C XUCNUKMRBVNAPB-UHFFFAOYSA-N 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 239000007770 graphite material Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 229910021439 lithium cobalt complex oxide Inorganic materials 0.000 description 1
- 229910021440 lithium nickel complex oxide Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910021382 natural graphite Inorganic materials 0.000 description 1
- 229920001220 nitrocellulos Polymers 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 239000005077 polysulfide Substances 0.000 description 1
- 229920001021 polysulfide Polymers 0.000 description 1
- 150000008117 polysulfides Polymers 0.000 description 1
- RUOJZAUFBMNUDX-UHFFFAOYSA-N propylene carbonate Chemical compound CC1COC(=O)O1 RUOJZAUFBMNUDX-UHFFFAOYSA-N 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 230000007017 scission Effects 0.000 description 1
- 229910052596 spinel Inorganic materials 0.000 description 1
- 239000011029 spinel Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 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
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 1
- 238000010792 warming Methods 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
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- Secondary Cells (AREA)
- Connection Of Batteries Or Terminals (AREA)
- Battery Electrode And Active Subsutance (AREA)
Description
以下、本実施形態のリチウムイオン二次電池20の作用等について説明する。
実施例1では、下表1に示すように、正極板の長さを2.85m、厚さを150μmに調整してアルミニウム箔比率を13.0%とした。電池の定格容量Cは6.8Ahであった。正極面積Sが0.228m2のため、比C/Sが29.8Ah/m2となる。なお、表1において、正極板単位面積あたりの正極集電体重量部はアルミニウム箔比率を示している。
実施例2では、表1に示すように、正極板の長さを3.30m、厚さを133μmに調整してアルミニウム箔比率を15.0%とした。電池の定格容量Cは6.6Ahであった。正極面積Sが0.264m2のため、比C/Sが25.0Ah/m2となる。
実施例3では、表1に示すように、正極板の長さを3.35m、厚さを124μmに調整してアルミニウム箔比率を16.1%とした。電池の定格容量Cは6.4Ahであった。正極面積Sが0.268m2のため、比C/Sが23.9Ah/m2となる。
実施例4では、表1に示すように、正極板の長さを3.65m、厚さを112μmに調整してアルミニウム箔比率を17.9%とした。電池の定格容量Cは6.2Ahであった。正極面積Sが0.292m2のため、比C/Sが21.2Ah/m2となる。
実施例5では、表1に示すように、正極板の長さを4.02m、厚さを100μmに調整してアルミニウム箔比率を20.0%とした。電池の定格容量Cは6.0Ahであった。正極面積Sが0.322m2のため、比C/Sが18.6Ah/m2となる。
実施例6では、表1に示すように、正極板の長さを4.2m、厚さを95μmに調整してアルミニウム箔比率を21.0%とした。電池の定格容量Cは5.8Ahであった。正極面積Sが0.336m2のため、比C/Sが17.3Ah/m2となる。
比較例1では、表1に示すように、正極板の長さを1.85m、厚さを240μmに調整してアルミニウム箔比率を8.0%とした。電池の定格容量Cは7.5Ahであった。正極面積Sが0.148m2のため、比C/Sが50.7Ah/m2となる。
作製した実施例及び比較例の各電池について、次のような高率放電試験を実施した。各電池を満充電状態とし、満充電状態から定格容量に対する1時間率放電電流値(1C)で完全放電した。次に再度満充電状態とし、満充電状態から定格容量に対する1時間率放電電流値の3倍の電流値(3C)で完全放電した。その後同様に、各電池を満充電状態から、1時間率放電電流値の5倍の電流値(5C)、1時間率放電電流値の10倍の電流値(10C)、1時間率放電電流値の20倍の電流値(20C)でそれぞれ完全放電した。各電流値での放電容量の1C放電時容量を基準(100%)とする相対値を容量維持率として求めた。高率放電試験の結果を図2に示す。
5 負極集電リング
6 捲回群(電極群)
7 電池缶(負極外部端子)
8 負極リード板
9 正極リード
18 電池蓋(正極外部端子)
20 円筒型リチウムイオン二次電池(リチウム二次電池)
Claims (3)
- 正極活物質が正極集電体に塗着された正極板と、負極板とが配置された電極群を備えたリチウム二次電池において、前記電極群から正負極外部端子までの電池内通電経路の許容電流値が定格容量に対する1時間率放電電流値の5倍以上であり、前記正極板の単位面積あたりの重量の100重量部に占める前記正極集電体の重量が13重量部以上であるとともに、前記定格容量をC(Ah)とし、前記正極板の前記正極活物質が塗着された面積をS(m 2 )としたときに、比C/Sが25.0(Ah/m 2 )以下であることを特徴とするリチウム二次電池。
- 前記正極板の単位面積あたりの重量の100重量部に占める前記正極集電体の重量が20重量部以上であることを特徴とする請求項1に記載のリチウム二次電池。
- 前記比C/Sが18.6(Ah/m2)以下であることを特徴とする請求項2に記載のリチウム二次電池。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005064877A JP4688527B2 (ja) | 2005-03-09 | 2005-03-09 | リチウム二次電池 |
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---|---|---|---|
JP2005064877A JP4688527B2 (ja) | 2005-03-09 | 2005-03-09 | リチウム二次電池 |
Publications (2)
Publication Number | Publication Date |
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JP2006252834A JP2006252834A (ja) | 2006-09-21 |
JP4688527B2 true JP4688527B2 (ja) | 2011-05-25 |
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JP2005064877A Active JP4688527B2 (ja) | 2005-03-09 | 2005-03-09 | リチウム二次電池 |
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JP (1) | JP4688527B2 (ja) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5177841B2 (ja) * | 2007-09-05 | 2013-04-10 | 善三 橋本 | 低抵抗の電池用集電体 |
KR100947071B1 (ko) | 2007-11-23 | 2010-03-12 | 삼성에스디아이 주식회사 | 이차 전지 |
US20150037658A1 (en) * | 2012-03-30 | 2015-02-05 | Sanyo Electric Co., Ltd. | Stack type battery |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2000311676A (ja) * | 1999-04-28 | 2000-11-07 | Shin Kobe Electric Mach Co Ltd | 円筒形リチウムイオン電池 |
JP2001118569A (ja) * | 1999-10-19 | 2001-04-27 | Hitachi Ltd | リチウム二次電池 |
JP2001176499A (ja) * | 1999-10-04 | 2001-06-29 | Japan Storage Battery Co Ltd | 非水電解質二次電池 |
JP2003123753A (ja) * | 2001-10-10 | 2003-04-25 | Japan Storage Battery Co Ltd | 非水系二次電池用正極活物質およびそれを用いた非水系二次電池 |
WO2005013408A1 (ja) * | 2003-07-31 | 2005-02-10 | Nec Lamilion Energy, Ltd. | リチウムイオン二次電池 |
-
2005
- 2005-03-09 JP JP2005064877A patent/JP4688527B2/ja active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2000311676A (ja) * | 1999-04-28 | 2000-11-07 | Shin Kobe Electric Mach Co Ltd | 円筒形リチウムイオン電池 |
JP2001176499A (ja) * | 1999-10-04 | 2001-06-29 | Japan Storage Battery Co Ltd | 非水電解質二次電池 |
JP2001118569A (ja) * | 1999-10-19 | 2001-04-27 | Hitachi Ltd | リチウム二次電池 |
JP2003123753A (ja) * | 2001-10-10 | 2003-04-25 | Japan Storage Battery Co Ltd | 非水系二次電池用正極活物質およびそれを用いた非水系二次電池 |
WO2005013408A1 (ja) * | 2003-07-31 | 2005-02-10 | Nec Lamilion Energy, Ltd. | リチウムイオン二次電池 |
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JP2006252834A (ja) | 2006-09-21 |
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