JP2005135603A - 非水二次電池 - Google Patents
非水二次電池 Download PDFInfo
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- JP2005135603A JP2005135603A JP2003367257A JP2003367257A JP2005135603A JP 2005135603 A JP2005135603 A JP 2005135603A JP 2003367257 A JP2003367257 A JP 2003367257A JP 2003367257 A JP2003367257 A JP 2003367257A JP 2005135603 A JP2005135603 A JP 2005135603A
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- positive electrode
- negative electrode
- secondary battery
- lithium
- active material
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- 229910052744 lithium Inorganic materials 0.000 claims abstract description 32
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims abstract description 26
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 20
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 15
- 229910052802 copper Inorganic materials 0.000 claims abstract description 11
- 229910052738 indium Inorganic materials 0.000 claims abstract description 10
- 229910052718 tin Inorganic materials 0.000 claims abstract description 10
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 10
- 229910052787 antimony Inorganic materials 0.000 claims abstract description 9
- 229910000314 transition metal oxide Inorganic materials 0.000 claims abstract description 9
- URIIGZKXFBNRAU-UHFFFAOYSA-N lithium;oxonickel Chemical compound [Li].[Ni]=O URIIGZKXFBNRAU-UHFFFAOYSA-N 0.000 claims description 7
- 230000006866 deterioration Effects 0.000 abstract description 4
- 238000007599 discharging Methods 0.000 abstract 2
- 239000000203 mixture Substances 0.000 description 49
- 239000007773 negative electrode material Substances 0.000 description 20
- 239000007774 positive electrode material Substances 0.000 description 19
- 229910052751 metal Inorganic materials 0.000 description 14
- 239000002184 metal Substances 0.000 description 14
- 239000011888 foil Substances 0.000 description 11
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 10
- -1 LiCoO 2 Chemical compound 0.000 description 9
- 239000011230 binding agent Substances 0.000 description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 8
- 229910015915 LiNi0.8Co0.2O2 Inorganic materials 0.000 description 8
- 238000003490 calendering Methods 0.000 description 8
- 239000010949 copper Substances 0.000 description 8
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 7
- 239000002904 solvent Substances 0.000 description 7
- 239000003575 carbonaceous material Substances 0.000 description 6
- 239000002482 conductive additive Substances 0.000 description 6
- AMWRITDGCCNYAT-UHFFFAOYSA-L hydroxy(oxo)manganese;manganese Chemical compound [Mn].O[Mn]=O.O[Mn]=O AMWRITDGCCNYAT-UHFFFAOYSA-L 0.000 description 6
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 description 5
- 229910045601 alloy Inorganic materials 0.000 description 5
- 239000000956 alloy Substances 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 5
- 150000003839 salts Chemical class 0.000 description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- KMTRUDSVKNLOMY-UHFFFAOYSA-N Ethylene carbonate Chemical compound O=C1OCCO1 KMTRUDSVKNLOMY-UHFFFAOYSA-N 0.000 description 4
- 239000002033 PVDF binder Substances 0.000 description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 4
- 229920001577 copolymer Polymers 0.000 description 4
- JBTWLSYIZRCDFO-UHFFFAOYSA-N ethyl methyl carbonate Chemical compound CCOC(=O)OC JBTWLSYIZRCDFO-UHFFFAOYSA-N 0.000 description 4
- 229910052759 nickel Inorganic materials 0.000 description 4
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 4
- 239000010703 silicon Substances 0.000 description 4
- 239000011856 silicon-based particle Substances 0.000 description 4
- YEJRWHAVMIAJKC-UHFFFAOYSA-N 4-Butyrolactone Chemical compound O=C1CCCO1 YEJRWHAVMIAJKC-UHFFFAOYSA-N 0.000 description 3
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 3
- 229910012851 LiCoO 2 Inorganic materials 0.000 description 3
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 3
- 239000006229 carbon black Substances 0.000 description 3
- 235000019241 carbon black Nutrition 0.000 description 3
- 229910000428 cobalt oxide Inorganic materials 0.000 description 3
- IVMYJDGYRUAWML-UHFFFAOYSA-N cobalt(ii) oxide Chemical compound [Co]=O IVMYJDGYRUAWML-UHFFFAOYSA-N 0.000 description 3
- 239000011889 copper foil Substances 0.000 description 3
- 238000000151 deposition Methods 0.000 description 3
- 239000008151 electrolyte solution Substances 0.000 description 3
- 229910001410 inorganic ion Inorganic materials 0.000 description 3
- 229910001416 lithium ion Inorganic materials 0.000 description 3
- 230000014759 maintenance of location Effects 0.000 description 3
- 239000011572 manganese Substances 0.000 description 3
- 238000010298 pulverizing process Methods 0.000 description 3
- 229910052596 spinel Inorganic materials 0.000 description 3
- 239000011029 spinel Substances 0.000 description 3
- ZZXUZKXVROWEIF-UHFFFAOYSA-N 1,2-butylene carbonate Chemical compound CCC1COC(=O)O1 ZZXUZKXVROWEIF-UHFFFAOYSA-N 0.000 description 2
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 2
- XTHFKEDIFFGKHM-UHFFFAOYSA-N Dimethoxyethane Chemical compound COCCOC XTHFKEDIFFGKHM-UHFFFAOYSA-N 0.000 description 2
- 229920002943 EPDM rubber Polymers 0.000 description 2
- 229910015643 LiMn 2 O 4 Inorganic materials 0.000 description 2
- 229910013716 LiNi Inorganic materials 0.000 description 2
- 229910013290 LiNiO 2 Inorganic materials 0.000 description 2
- 229910013870 LiPF 6 Inorganic materials 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
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- 229910052748 manganese Inorganic materials 0.000 description 2
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- 229920001343 polytetrafluoroethylene Polymers 0.000 description 2
- RUOJZAUFBMNUDX-UHFFFAOYSA-N propylene carbonate Chemical compound CC1COC(=O)O1 RUOJZAUFBMNUDX-UHFFFAOYSA-N 0.000 description 2
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- WNXJIVFYUVYPPR-UHFFFAOYSA-N 1,3-dioxolane Chemical compound C1COCO1 WNXJIVFYUVYPPR-UHFFFAOYSA-N 0.000 description 1
- FZKPQHFEMFIDNR-UHFFFAOYSA-N 2-hydroxyethyl hydrogen sulfite Chemical compound OCCOS(O)=O FZKPQHFEMFIDNR-UHFFFAOYSA-N 0.000 description 1
- JWUJQDFVADABEY-UHFFFAOYSA-N 2-methyltetrahydrofuran Chemical compound CC1CCCO1 JWUJQDFVADABEY-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 1
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 229910017482 Cu 6 Sn 5 Inorganic materials 0.000 description 1
- 229910017755 Cu-Sn Inorganic materials 0.000 description 1
- 229910017927 Cu—Sn Inorganic materials 0.000 description 1
- OIFBSDVPJOWBCH-UHFFFAOYSA-N Diethyl carbonate Chemical compound CCOC(=O)OCC OIFBSDVPJOWBCH-UHFFFAOYSA-N 0.000 description 1
- 229920000663 Hydroxyethyl cellulose Polymers 0.000 description 1
- 239000004354 Hydroxyethyl cellulose Substances 0.000 description 1
- 229920002153 Hydroxypropyl cellulose Polymers 0.000 description 1
- RAXXELZNTBOGNW-UHFFFAOYSA-O Imidazolium Chemical compound C1=C[NH+]=CN1 RAXXELZNTBOGNW-UHFFFAOYSA-O 0.000 description 1
- 229910015015 LiAsF 6 Inorganic materials 0.000 description 1
- 229910013063 LiBF 4 Inorganic materials 0.000 description 1
- 229910013372 LiC 4 Inorganic materials 0.000 description 1
- 229910013684 LiClO 4 Inorganic materials 0.000 description 1
- 229910013275 LiMPO Inorganic materials 0.000 description 1
- 229910013825 LiNi0.33Co0.33Mn0.33O2 Inorganic materials 0.000 description 1
- 229910002991 LiNi0.5Co0.2Mn0.3O2 Inorganic materials 0.000 description 1
- 229910012513 LiSbF 6 Inorganic materials 0.000 description 1
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 description 1
- RJUFJBKOKNCXHH-UHFFFAOYSA-N Methyl propionate Chemical compound CCC(=O)OC RJUFJBKOKNCXHH-UHFFFAOYSA-N 0.000 description 1
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 1
- 229920001665 Poly-4-vinylphenol Polymers 0.000 description 1
- 239000005062 Polybutadiene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- 229910001128 Sn alloy Inorganic materials 0.000 description 1
- 229920002125 Sokalan® Polymers 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- DHKHKXVYLBGOIT-UHFFFAOYSA-N acetaldehyde Diethyl Acetal Natural products CCOC(C)OCC DHKHKXVYLBGOIT-UHFFFAOYSA-N 0.000 description 1
- 125000002777 acetyl group Chemical class [H]C([H])([H])C(*)=O 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- MYWGVEGHKGKUMM-UHFFFAOYSA-N carbonic acid;ethene Chemical compound C=C.C=C.OC(O)=O MYWGVEGHKGKUMM-UHFFFAOYSA-N 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 235000010980 cellulose Nutrition 0.000 description 1
- 239000006231 channel black Substances 0.000 description 1
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 1
- 230000001351 cycling effect Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000003795 desorption Methods 0.000 description 1
- 229920005994 diacetyl cellulose Polymers 0.000 description 1
- IEJIGPNLZYLLBP-UHFFFAOYSA-N dimethyl carbonate Chemical compound COC(=O)OC IEJIGPNLZYLLBP-UHFFFAOYSA-N 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 125000002573 ethenylidene group Chemical group [*]=C=C([H])[H] 0.000 description 1
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- 125000003709 fluoroalkyl group Chemical group 0.000 description 1
- 229920001973 fluoroelastomer Polymers 0.000 description 1
- 239000006232 furnace black Substances 0.000 description 1
- 150000004676 glycans Chemical class 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 235000019447 hydroxyethyl cellulose Nutrition 0.000 description 1
- 239000001863 hydroxypropyl cellulose Substances 0.000 description 1
- 235000010977 hydroxypropyl cellulose Nutrition 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 229910000765 intermetallic Inorganic materials 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 239000005001 laminate film Substances 0.000 description 1
- 239000006233 lamp black Substances 0.000 description 1
- 229920000126 latex Polymers 0.000 description 1
- 239000004816 latex Substances 0.000 description 1
- HEPLMSKRHVKCAQ-UHFFFAOYSA-N lead nickel Chemical compound [Ni].[Pb] HEPLMSKRHVKCAQ-UHFFFAOYSA-N 0.000 description 1
- 229910000625 lithium cobalt oxide Inorganic materials 0.000 description 1
- 229910002102 lithium manganese oxide Inorganic materials 0.000 description 1
- BFZPBUKRYWOWDV-UHFFFAOYSA-N lithium;oxido(oxo)cobalt Chemical compound [Li+].[O-][Co]=O BFZPBUKRYWOWDV-UHFFFAOYSA-N 0.000 description 1
- VLXXBCXTUVRROQ-UHFFFAOYSA-N lithium;oxido-oxo-(oxomanganiooxy)manganese Chemical compound [Li+].[O-][Mn](=O)O[Mn]=O VLXXBCXTUVRROQ-UHFFFAOYSA-N 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 229910052752 metalloid Inorganic materials 0.000 description 1
- 150000002738 metalloids Chemical class 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 229920000609 methyl cellulose Polymers 0.000 description 1
- 229940017219 methyl propionate Drugs 0.000 description 1
- 239000001923 methylcellulose Substances 0.000 description 1
- 235000010981 methylcellulose Nutrition 0.000 description 1
- 229910021382 natural graphite Inorganic materials 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- XYFCBTPGUUZFHI-UHFFFAOYSA-O phosphonium Chemical compound [PH4+] XYFCBTPGUUZFHI-UHFFFAOYSA-O 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 229920001084 poly(chloroprene) Polymers 0.000 description 1
- 229920001495 poly(sodium acrylate) polymer Polymers 0.000 description 1
- 229920002432 poly(vinyl methyl ether) polymer Polymers 0.000 description 1
- 229920002401 polyacrylamide Polymers 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
- 239000004584 polyacrylic acid Substances 0.000 description 1
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- 229920001690 polydopamine Polymers 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
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- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 229920001290 polyvinyl ester Polymers 0.000 description 1
- 229920000036 polyvinylpyrrolidone Polymers 0.000 description 1
- 239000001267 polyvinylpyrrolidone Substances 0.000 description 1
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 description 1
- 125000001453 quaternary ammonium group Chemical group 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 150000003377 silicon compounds Chemical class 0.000 description 1
- NNMHYFLPFNGQFZ-UHFFFAOYSA-M sodium polyacrylate Chemical compound [Na+].[O-]C(=O)C=C NNMHYFLPFNGQFZ-UHFFFAOYSA-M 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
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- 229920003048 styrene butadiene rubber Polymers 0.000 description 1
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- RWSOTUBLDIXVET-UHFFFAOYSA-O sulfonium Chemical compound [SH3+] RWSOTUBLDIXVET-UHFFFAOYSA-O 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 1
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- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
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- 229920002554 vinyl polymer Polymers 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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
Landscapes
- Secondary Cells (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
【解決手段】本発明の非水二次電池は、Al、Si、Cu、Zn、In、Sn、およびSbからなる群から選ばれる少なくとも1種の元素を含む負極と、リチウム含有遷移金属酸化物を含む正極とを備えた非水二次電池であって、電池電圧が1.8V〜3.2Vとなるまで放電した時の上記負極の電位がリチウム金属基準で1V以下となるように、前記正極の放電容量および前記負極の放電容量の設定がなされていることを特徴とする。
【選択図】 なし
Description
ヨコカワ、他4名、「ソリッド・ステイト・アイオニックス(Solid State Ionics)」、1998年、113−115巻、p.57
LiNi0.8Co0.2O2(正極活物質)94重量部と、カーボンブラック(導電助剤)3重量部と、ポリフッ化ビニリデン(結着剤)3重量部とを、N−メチルピロリドン(溶剤)中にて均一になるまで混合し、正極合剤含有ペーストを調製した。正極合剤含有ペーストを集電体となる厚さ20μmのアルミニウム箔の片面に単位面積あたりの合剤重量が18.8mg/cm2となるように塗布し乾燥して正極合剤層を形成し、続いて、カレンダー処理により、全体の厚さが81μm、電極密度3.1g/cm3となるように正極合剤層の厚みを調整した。その後41mm×25.5mmに20mm×5mmの端子部分を残した形状に切断して正極を作製した。
LiNi0.8Co0.2O2(正極活物質)に代えてLiNi0.5Co0.2Mn0.3O2(正極活物質)を用いて正極合剤含有ペーストを作製した。この正極合剤含有ペーストを集電体となるアルミニウム箔の片面に単位面積あたりの合剤重量が21.6mg/cm2となるように塗布し乾燥して正極合剤層を形成し、続いて、カレンダー処理により、全体の厚さが90μm、電極密度が3.1g/cm3となるように正極合剤層の厚みを調整した。以上のこと以外は、実施例1と同様にして非水二次電池を作製した。
LiNi0.8Co0.2O2(正極活物質)に代えてLiNi0.33Co0.33Mn0.33O2(正極活物質)を用いて正極合剤含有ペーストを作製した。この正極合剤含有ペーストを集電体となるアルミニウム箔の片面に単位面積あたりの合剤重量が23.0mg/cm2となるように塗布し乾燥して正極合剤層を形成し、続いて、カレンダー処理により、全体の厚さが72μm、電極密度3.2g/cm3となるように正極合剤層の厚みを調整した。以上のこと以外は、実施例1と同様にして非水二次電池を作製した。
LiNi0.8Co0.2O2(正極活物質)に代えて、LiNi0.8Co0.2O2とLiMn2O4とが8:2の重量割合で混合された正極活物質を用いて正極合剤含有ペーストを作製した。この正極合剤含有ペーストを集電体となるアルミニウム箔の片面に単位面積あたりの合剤重量が20.6mg/cm2となるように塗布し乾燥して正極合剤層を形成した後、続いて、カレンダー処理により、全体の厚さが89μm、電極密度3.0g/cm3となるように正極合剤層の厚みを調整して、アルミニウム箔の片面に正極合剤層を形成した。以上のこと以外は、実施例1と同様にして非水二次電池を作製した。
LiNi0.8Co0.2O2(正極活物質)に代えて、LiNi0.8Co0.2O2とLiCoO2とが8:2の重量割合で混合された正極活物質を用いて正極合剤含有ペーストを作製した。この正極合剤含有ペーストを集電体となるアルミニウム箔の片面に単位面積あたりの合剤重量が19.4mg/cm2となるように塗布し乾燥して正極合剤層を形成した後、続いて、カレンダー処理により、全体の厚さが61μm、電極密度3.2g/cm3となるように正極合剤層の厚みを調整した。以上のこと以外は、実施例1と同様にして非水二次電池を作製した。
厚さ15μmの銅箔の両面にSn0.063g(全重量)をメッキし、それを真空電気炉で200℃、17時間加熱して作製されたCu-Sn合金(Cu6Sn5)薄膜を負極として用いたこと以外は実施例1と同様に非水二次電池を作製した。
実施例1と同様にして非水二次電池を作製した。
実施例1において作製した正極合剤含有ペーストを、集電体となるアルミニウム箔の片面に単位面積あたりの合剤重量が18.0mg/cm2となるように塗布し乾燥して正極合剤層を形成した後、続いて、カレンダー処理により、全体の厚さが78μm、電極密度3.1g/cm3となるように正極合剤層の厚みを調整して、アルミニウム箔の片面に正極合剤層を形成した。以上のこと以外は、実施例1と同様にして非水二次電池を作製した。
LiNi0.8Co0.2O2(正極活物質)に代えて、LiCoO2を用いて正極合剤含有ペーストを作製した。この正極合剤含有ペーストを集電体となるアルミニウム箔の片面に単位面積あたりの合剤重量が25.0mg/cm2となるように塗布し乾燥して正極合剤層を形成し、続いて、カレンダー処理により、全体の厚さが76μm、電極密度3.3g/cm3となるように正極合剤層の厚みを調整した。以上のこと以外は、実施例1と同様にして非水二次電池を作製した。
(数1)
容量維持率(%)=(20サイクル目の放電容量/1サイクル目の放電容量)×100
Claims (3)
- Al、Si、Cu、Zn、In、Sn、およびSbからなる群から選ばれる少なくとも1種の元素を含む負極と、リチウム含有遷移金属酸化物を含む正極とを備えた非水二次電池であって、電池電圧が1.8V〜3.2Vとなるまで放電した時の上記負極の電位がリチウム金属基準で1V以下となるように、前記正極の放電容量および前記負極の放電容量の設定がなされていることを特徴とする非水二次電池。
- Al、Si、Cu、Zn、In、Sn、およびSbからなる群から選ばれる少なくとも1種の元素を含む負極と、リチウム含有遷移金属酸化物を含む正極とを備えた非水二次電池であって、前記正極の放電容量が前記負極の放電容量の95%以下であることを特徴とする請求項1に記載の非水二次電池。
- 前記リチウム含有遷移金属酸化物が、リチウムニッケル酸化物を含む請求項1または2に記載の非水二次電池。
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Cited By (8)
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JP2005317309A (ja) * | 2004-04-28 | 2005-11-10 | Sanyo Electric Co Ltd | リチウム二次電池 |
JP2006120612A (ja) * | 2004-09-24 | 2006-05-11 | Sanyo Electric Co Ltd | リチウム二次電池 |
WO2008018208A1 (fr) * | 2006-08-10 | 2008-02-14 | Mitsui Mining & Smelting Co., Ltd. | Accumulateur à électrolyte non aqueux |
WO2011111566A1 (ja) * | 2010-03-12 | 2011-09-15 | 住友電気工業株式会社 | 電池用負極材料、電池用負極前駆体材料、及び電池 |
JP2014086218A (ja) * | 2012-10-22 | 2014-05-12 | Toyota Motor Corp | 全固体電池システム |
WO2015037522A1 (ja) * | 2013-09-11 | 2015-03-19 | 日立マクセル株式会社 | 非水二次電池 |
JP2020155253A (ja) * | 2019-03-19 | 2020-09-24 | 三菱ケミカル株式会社 | 非水系電解液二次電池 |
JP7494346B2 (ja) | 2023-03-15 | 2024-06-03 | 三菱ケミカル株式会社 | 非水系電解液二次電池 |
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JP2000260472A (ja) * | 1999-03-11 | 2000-09-22 | Toyota Central Res & Dev Lab Inc | 非水電解質二次電池 |
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Publication number | Priority date | Publication date | Assignee | Title |
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JP2005317309A (ja) * | 2004-04-28 | 2005-11-10 | Sanyo Electric Co Ltd | リチウム二次電池 |
JP2006120612A (ja) * | 2004-09-24 | 2006-05-11 | Sanyo Electric Co Ltd | リチウム二次電池 |
KR101209338B1 (ko) | 2004-09-24 | 2012-12-06 | 산요덴키가부시키가이샤 | 리튬 이차 전지 |
WO2008018208A1 (fr) * | 2006-08-10 | 2008-02-14 | Mitsui Mining & Smelting Co., Ltd. | Accumulateur à électrolyte non aqueux |
WO2011111566A1 (ja) * | 2010-03-12 | 2011-09-15 | 住友電気工業株式会社 | 電池用負極材料、電池用負極前駆体材料、及び電池 |
JP2011192474A (ja) * | 2010-03-12 | 2011-09-29 | Sumitomo Electric Ind Ltd | 電池用負極材料、電池用負極前駆体材料、及び電池 |
JP2014086218A (ja) * | 2012-10-22 | 2014-05-12 | Toyota Motor Corp | 全固体電池システム |
WO2015037522A1 (ja) * | 2013-09-11 | 2015-03-19 | 日立マクセル株式会社 | 非水二次電池 |
JP2020155253A (ja) * | 2019-03-19 | 2020-09-24 | 三菱ケミカル株式会社 | 非水系電解液二次電池 |
JP7246981B2 (ja) | 2019-03-19 | 2023-03-28 | 三菱ケミカル株式会社 | 非水系電解液二次電池 |
JP7494346B2 (ja) | 2023-03-15 | 2024-06-03 | 三菱ケミカル株式会社 | 非水系電解液二次電池 |
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