JP5482858B2 - リチウムイオン二次電池 - Google Patents
リチウムイオン二次電池 Download PDFInfo
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- JP5482858B2 JP5482858B2 JP2012230070A JP2012230070A JP5482858B2 JP 5482858 B2 JP5482858 B2 JP 5482858B2 JP 2012230070 A JP2012230070 A JP 2012230070A JP 2012230070 A JP2012230070 A JP 2012230070A JP 5482858 B2 JP5482858 B2 JP 5482858B2
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- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims description 70
- 229910001416 lithium ion Inorganic materials 0.000 title claims description 65
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 61
- 229910002804 graphite Inorganic materials 0.000 claims description 52
- 239000010439 graphite Substances 0.000 claims description 52
- 239000007773 negative electrode material Substances 0.000 claims description 34
- 238000002156 mixing Methods 0.000 claims description 19
- 239000002131 composite material Substances 0.000 claims description 13
- 150000001875 compounds Chemical class 0.000 claims description 12
- 229910044991 metal oxide Inorganic materials 0.000 claims description 9
- 150000004706 metal oxides Chemical class 0.000 claims description 9
- 229910012735 LiCo1/3Ni1/3Mn1/3O2 Inorganic materials 0.000 claims description 5
- 229910013733 LiCo Inorganic materials 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 3
- LIVNPJMFVYWSIS-UHFFFAOYSA-N silicon monoxide Chemical compound [Si-]#[O+] LIVNPJMFVYWSIS-UHFFFAOYSA-N 0.000 description 135
- 238000012360 testing method Methods 0.000 description 26
- 239000011230 binding agent Substances 0.000 description 21
- 239000011347 resin Substances 0.000 description 20
- 229920005989 resin Polymers 0.000 description 20
- 239000002002 slurry Substances 0.000 description 19
- 239000011149 active material Substances 0.000 description 18
- 239000003575 carbonaceous material Substances 0.000 description 18
- 239000007774 positive electrode material Substances 0.000 description 16
- 239000011247 coating layer Substances 0.000 description 13
- -1 polytetrafluoroethylene Polymers 0.000 description 11
- 239000002904 solvent Substances 0.000 description 11
- 230000007423 decrease Effects 0.000 description 10
- 239000003981 vehicle Substances 0.000 description 10
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 9
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 description 9
- 239000010410 layer Substances 0.000 description 9
- 229910052744 lithium Inorganic materials 0.000 description 9
- 238000000034 method Methods 0.000 description 9
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 8
- 239000008151 electrolyte solution Substances 0.000 description 8
- 239000000843 powder Substances 0.000 description 8
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 7
- 239000011888 foil Substances 0.000 description 7
- 238000010438 heat treatment Methods 0.000 description 7
- 229910004298 SiO 2 Inorganic materials 0.000 description 6
- 229910052782 aluminium Inorganic materials 0.000 description 6
- 238000000576 coating method Methods 0.000 description 6
- 239000002482 conductive additive Substances 0.000 description 6
- 239000003792 electrolyte Substances 0.000 description 6
- 239000002245 particle Substances 0.000 description 6
- KMTRUDSVKNLOMY-UHFFFAOYSA-N Ethylene carbonate Chemical compound O=C1OCCO1 KMTRUDSVKNLOMY-UHFFFAOYSA-N 0.000 description 5
- 239000012752 auxiliary agent Substances 0.000 description 5
- 230000003247 decreasing effect Effects 0.000 description 5
- 239000003273 ketjen black Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- OIFBSDVPJOWBCH-UHFFFAOYSA-N Diethyl carbonate Chemical compound CCOC(=O)OCC OIFBSDVPJOWBCH-UHFFFAOYSA-N 0.000 description 4
- 239000006230 acetylene black Substances 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000000748 compression moulding Methods 0.000 description 4
- 239000011572 manganese Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 229910052710 silicon Inorganic materials 0.000 description 4
- 229910052814 silicon oxide Inorganic materials 0.000 description 4
- 239000002210 silicon-based material Substances 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 229910012851 LiCoO 2 Inorganic materials 0.000 description 3
- 229910013870 LiPF 6 Inorganic materials 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 239000002033 PVDF binder Substances 0.000 description 3
- 239000004743 Polypropylene Substances 0.000 description 3
- ZYXUQEDFWHDILZ-UHFFFAOYSA-N [Ni].[Mn].[Li] Chemical compound [Ni].[Mn].[Li] ZYXUQEDFWHDILZ-UHFFFAOYSA-N 0.000 description 3
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- 239000011248 coating agent Substances 0.000 description 3
- 239000011889 copper foil Substances 0.000 description 3
- IEJIGPNLZYLLBP-UHFFFAOYSA-N dimethyl carbonate Chemical compound COC(=O)OC IEJIGPNLZYLLBP-UHFFFAOYSA-N 0.000 description 3
- 238000007323 disproportionation reaction Methods 0.000 description 3
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- 229920000049 Carbon (fiber) Polymers 0.000 description 2
- XTHFKEDIFFGKHM-UHFFFAOYSA-N Dimethoxyethane Chemical compound COCCOC XTHFKEDIFFGKHM-UHFFFAOYSA-N 0.000 description 2
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 2
- 229910013063 LiBF 4 Inorganic materials 0.000 description 2
- 229910013684 LiClO 4 Inorganic materials 0.000 description 2
- OFOBLEOULBTSOW-UHFFFAOYSA-N Malonic acid Chemical compound OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 2
- NTIZESTWPVYFNL-UHFFFAOYSA-N Methyl isobutyl ketone Chemical compound CC(C)CC(C)=O NTIZESTWPVYFNL-UHFFFAOYSA-N 0.000 description 2
- UIHCLUNTQKBZGK-UHFFFAOYSA-N Methyl isobutyl ketone Natural products CCC(C)C(C)=O UIHCLUNTQKBZGK-UHFFFAOYSA-N 0.000 description 2
- 239000004962 Polyamide-imide Substances 0.000 description 2
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- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 2
- 229910052787 antimony Inorganic materials 0.000 description 2
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- 229910052790 beryllium Inorganic materials 0.000 description 2
- 229910052797 bismuth Inorganic materials 0.000 description 2
- 229910052793 cadmium Inorganic materials 0.000 description 2
- 229910052792 caesium Inorganic materials 0.000 description 2
- 229910052791 calcium Inorganic materials 0.000 description 2
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- 238000013329 compounding Methods 0.000 description 2
- 125000004122 cyclic group Chemical group 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- XBDQKXXYIPTUBI-UHFFFAOYSA-N dimethylselenoniopropionate Natural products CCC(O)=O XBDQKXXYIPTUBI-UHFFFAOYSA-N 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 150000002170 ethers Chemical class 0.000 description 2
- 229910052730 francium Inorganic materials 0.000 description 2
- 229910052733 gallium Inorganic materials 0.000 description 2
- GAEKPEKOJKCEMS-UHFFFAOYSA-N gamma-valerolactone Chemical compound CC1CCC(=O)O1 GAEKPEKOJKCEMS-UHFFFAOYSA-N 0.000 description 2
- 229910052732 germanium Inorganic materials 0.000 description 2
- 229910052738 indium Inorganic materials 0.000 description 2
- 229910052745 lead Inorganic materials 0.000 description 2
- 229910003002 lithium salt Inorganic materials 0.000 description 2
- 159000000002 lithium salts Chemical class 0.000 description 2
- 229910052749 magnesium Inorganic materials 0.000 description 2
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Chemical compound O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 description 2
- 150000002736 metal compounds Chemical class 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 150000002894 organic compounds Chemical class 0.000 description 2
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- 229910052700 potassium Inorganic materials 0.000 description 2
- 239000002243 precursor Substances 0.000 description 2
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- 229910052701 rubidium Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 229910052712 strontium Inorganic materials 0.000 description 2
- 229910052718 tin Inorganic materials 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- ZZXUZKXVROWEIF-UHFFFAOYSA-N 1,2-butylene carbonate Chemical compound CCC1COC(=O)O1 ZZXUZKXVROWEIF-UHFFFAOYSA-N 0.000 description 1
- LZDKZFUFMNSQCJ-UHFFFAOYSA-N 1,2-diethoxyethane Chemical compound CCOCCOCC LZDKZFUFMNSQCJ-UHFFFAOYSA-N 0.000 description 1
- VAYTZRYEBVHVLE-UHFFFAOYSA-N 1,3-dioxol-2-one Chemical compound O=C1OC=CO1 VAYTZRYEBVHVLE-UHFFFAOYSA-N 0.000 description 1
- RYHBNJHYFVUHQT-UHFFFAOYSA-N 1,4-Dioxane Chemical compound C1COCCO1 RYHBNJHYFVUHQT-UHFFFAOYSA-N 0.000 description 1
- GDXHBFHOEYVPED-UHFFFAOYSA-N 1-(2-butoxyethoxy)butane Chemical compound CCCCOCCOCCCC GDXHBFHOEYVPED-UHFFFAOYSA-N 0.000 description 1
- JWUJQDFVADABEY-UHFFFAOYSA-N 2-methyltetrahydrofuran Chemical compound CC1CCCO1 JWUJQDFVADABEY-UHFFFAOYSA-N 0.000 description 1
- OMQHDIHZSDEIFH-UHFFFAOYSA-N 3-Acetyldihydro-2(3H)-furanone Chemical compound CC(=O)C1CCOC1=O OMQHDIHZSDEIFH-UHFFFAOYSA-N 0.000 description 1
- 229910017115 AlSb Inorganic materials 0.000 description 1
- 229910004706 CaSi2 Inorganic materials 0.000 description 1
- 229910019001 CoSi Inorganic materials 0.000 description 1
- 229910019974 CrSi Inorganic materials 0.000 description 1
- QGLBZNZGBLRJGS-UHFFFAOYSA-N Dihydro-3-methyl-2(3H)-furanone Chemical compound CC1CCOC1=O QGLBZNZGBLRJGS-UHFFFAOYSA-N 0.000 description 1
- 229910005329 FeSi 2 Inorganic materials 0.000 description 1
- 229910015015 LiAsF 6 Inorganic materials 0.000 description 1
- 229910002991 LiNi0.5Co0.2Mn0.3O2 Inorganic materials 0.000 description 1
- 229910011328 LiNi0.6Co0.2Mn0.2O2 Inorganic materials 0.000 description 1
- 229910015915 LiNi0.8Co0.2O2 Inorganic materials 0.000 description 1
- 229910012573 LiSiO Inorganic materials 0.000 description 1
- 229910012404 LiSnO Inorganic materials 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- 229910019018 Mg 2 Si Inorganic materials 0.000 description 1
- 229910019021 Mg 2 Sn Inorganic materials 0.000 description 1
- 229910017028 MnSi Inorganic materials 0.000 description 1
- 229910016006 MoSi Inorganic materials 0.000 description 1
- 229910005881 NiSi 2 Inorganic materials 0.000 description 1
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 1
- 239000004642 Polyimide Substances 0.000 description 1
- 229910005790 SnSiO Inorganic materials 0.000 description 1
- 229910008484 TiSi Inorganic materials 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- KLARSDUHONHPRF-UHFFFAOYSA-N [Li].[Mn] Chemical compound [Li].[Mn] KLARSDUHONHPRF-UHFFFAOYSA-N 0.000 description 1
- XHCLAFWTIXFWPH-UHFFFAOYSA-N [O-2].[O-2].[O-2].[O-2].[O-2].[V+5].[V+5] Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[V+5].[V+5] XHCLAFWTIXFWPH-UHFFFAOYSA-N 0.000 description 1
- 125000003545 alkoxy group Chemical group 0.000 description 1
- 125000005370 alkoxysilyl group Chemical group 0.000 description 1
- 229910021417 amorphous silicon Inorganic materials 0.000 description 1
- 229910021486 amorphous silicon dioxide Inorganic materials 0.000 description 1
- 239000012298 atmosphere Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
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- CKFRRHLHAJZIIN-UHFFFAOYSA-N cobalt lithium Chemical compound [Li].[Co] CKFRRHLHAJZIIN-UHFFFAOYSA-N 0.000 description 1
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- 230000006866 deterioration Effects 0.000 description 1
- QLVWOKQMDLQXNN-UHFFFAOYSA-N dibutyl carbonate Chemical compound CCCCOC(=O)OCCCC QLVWOKQMDLQXNN-UHFFFAOYSA-N 0.000 description 1
- 238000003618 dip coating Methods 0.000 description 1
- VUPKGFBOKBGHFZ-UHFFFAOYSA-N dipropyl carbonate Chemical compound CCCOC(=O)OCCC VUPKGFBOKBGHFZ-UHFFFAOYSA-N 0.000 description 1
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- 125000002573 ethenylidene group Chemical group [*]=C=C([H])[H] 0.000 description 1
- JBTWLSYIZRCDFO-UHFFFAOYSA-N ethyl methyl carbonate Chemical compound CCOC(=O)OC JBTWLSYIZRCDFO-UHFFFAOYSA-N 0.000 description 1
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- RSNHXDVSISOZOB-UHFFFAOYSA-N lithium nickel Chemical compound [Li].[Ni] RSNHXDVSISOZOB-UHFFFAOYSA-N 0.000 description 1
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- RCYJPSGNXVLIBO-UHFFFAOYSA-N sulfanylidenetitanium Chemical compound [S].[Ti] RCYJPSGNXVLIBO-UHFFFAOYSA-N 0.000 description 1
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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
Description
本発明のリチウムイオン二次電池は、正極と、SiOx(0.5≦x≦1.5)及び黒鉛を含む負極活物質を有する負極と、を有する。
中でもLiCo1/3Ni1/3Mn1/3O2は、熱安定性の点で好ましい。
正極の集電体として20μmのアルミニウム箔を用意し、正極活物質としてLiCo1/3Ni1/3Mn1/3O2(日亜化学社製)を用意し、正極のバインダー樹脂としてポリフッ化ビニリデン(PVDF)、正極の導電助剤としてアセチレンブラック(電気化学工業製)を準備した。
負極活物質として、D50が4μmのSiO(アルドリッチ社製)及び黒鉛(D50が20μmの天然黒鉛(日立化成工業株式会社製))を準備した。 バインダー樹脂としてアルコキシ基含有シラン変性ポリアミドイミド樹脂(荒川化学工業株式会社製、商品名コンポセラン、品番H900−2、溶剤組成:N-メチルピロリドン(NMP)/キシレン(Xyl)、硬化残分30%、粘度8000mPa・s、硬化残分中のシリカ、4質量%、硬化残分とは樹脂硬化させ揮発性成分を除いた固形分を意味する)を準備した。
(試験例1)
上記正極及び上記負極No.1を用いて、試験例1のラミネート型リチウムイオン二次電池を作製した。
負極として上記負極No.2を用いた以外は試験例1と同様にして、試験例2のラミネート型リチウムイオン二次電池を作製した。
負極として上記負極No.3を用いた以外は試験例1と同様にして、試験例3のラミネート型リチウムイオン二次電池を作製した。
負極として上記負極No.4を用いた以外は試験例1と同様にして、試験例4のラミネート型リチウムイオン二次電池を作製した。
試験例1〜4のリチウムイオン二次電池について、25℃にて充放電試験を行った。
Claims (5)
- 正極と、
SiOx(0.5≦x≦1.5)及び黒鉛を含む負極活物質を有する負極と、
を有し、
前記SiOx及び前記黒鉛を100質量%としたときのSiOxの配合割合は27質量%〜51質量%である(ただし27質量%〜30質量%を除く)ことを特徴とするリチウムイオン二次電池。 - 前記正極は、一般式: LiCopNiqMnrO2 (p+q+r=1、0<p<1、0≦q<1、0≦r<1)で表される複合金属酸化物を含む正極活物質を有する請求項1に記載のリチウムイオン二次電池。
- 前記複合金属酸化物はLiCo1/3Ni1/3Mn1/3O2である請求項2に記載のリチウムイオン二次電池。
- 前記SiOx及び前記黒鉛を100質量%としたときのSiOxの配合割合は、27質量%〜45質量%である(ただし27質量%〜30質量%を除く)ことを特徴とする請求項1〜3のいずれか1項に記載のリチウムイオン二次電池。
- 正極と、
Siおよび/またはSi化合物と、黒鉛とを含む負極活物質を有する負極とを有し、
前記黒鉛と前記Siおよび/またはSi化合物とを100質量%としたときの前記Siおよび/またはSi化合物の配合割合は27質量%〜51質量%である(ただし27質量%〜30質量%を除く)ことを特徴とするリチウムイオン二次電池。
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