JP2021527915A - リチウムイオン電池製造で使用するための溶媒システム - Google Patents
リチウムイオン電池製造で使用するための溶媒システム Download PDFInfo
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- 239000002904 solvent Substances 0.000 title claims abstract description 70
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 37
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 34
- 238000004519 manufacturing process Methods 0.000 title abstract description 17
- 150000001875 compounds Chemical class 0.000 claims abstract description 39
- 238000000034 method Methods 0.000 claims abstract description 24
- 239000011230 binding agent Substances 0.000 claims abstract description 18
- 229920000642 polymer Polymers 0.000 claims abstract description 17
- 239000002033 PVDF binder Substances 0.000 claims abstract description 16
- 229920002981 polyvinylidene fluoride Polymers 0.000 claims abstract description 16
- 239000011149 active material Substances 0.000 claims abstract description 13
- 239000002002 slurry Substances 0.000 claims abstract description 13
- MBHINSULENHCMF-UHFFFAOYSA-N n,n-dimethylpropanamide Chemical compound CCC(=O)N(C)C MBHINSULENHCMF-UHFFFAOYSA-N 0.000 claims abstract description 5
- 125000000217 alkyl group Chemical group 0.000 claims description 31
- 125000003545 alkoxy group Chemical group 0.000 claims description 28
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 15
- 229910052739 hydrogen Inorganic materials 0.000 claims description 15
- 239000001257 hydrogen Substances 0.000 claims description 15
- LBVMWHCOFMFPEG-UHFFFAOYSA-N 3-methoxy-n,n-dimethylpropanamide Chemical group COCCC(=O)N(C)C LBVMWHCOFMFPEG-UHFFFAOYSA-N 0.000 claims description 9
- 239000006258 conductive agent Substances 0.000 claims description 8
- AJFDBNQQDYLMJN-UHFFFAOYSA-N n,n-diethylacetamide Chemical group CCN(CC)C(C)=O AJFDBNQQDYLMJN-UHFFFAOYSA-N 0.000 claims description 7
- 125000004432 carbon atom Chemical group C* 0.000 claims description 4
- 229910000625 lithium cobalt oxide Inorganic materials 0.000 abstract description 4
- BFZPBUKRYWOWDV-UHFFFAOYSA-N lithium;oxido(oxo)cobalt Chemical compound [Li+].[O-][Co]=O BFZPBUKRYWOWDV-UHFFFAOYSA-N 0.000 abstract description 4
- 239000006229 carbon black Substances 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 abstract description 3
- 239000003795 chemical substances by application Substances 0.000 abstract description 2
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 description 41
- 239000000203 mixture Substances 0.000 description 14
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 7
- 239000011888 foil Substances 0.000 description 7
- 239000000126 substance Substances 0.000 description 7
- 238000001704 evaporation Methods 0.000 description 5
- 230000008020 evaporation Effects 0.000 description 5
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 4
- 238000009835 boiling Methods 0.000 description 4
- 239000003792 electrolyte Substances 0.000 description 4
- 229910052744 lithium Inorganic materials 0.000 description 4
- -1 methoxy, ethoxy, benzyloxy, t-butoxy Chemical group 0.000 description 4
- GNWBLLYJQXKPIP-ZOGIJGBBSA-N (1s,3as,3bs,5ar,9ar,9bs,11as)-n,n-diethyl-6,9a,11a-trimethyl-7-oxo-2,3,3a,3b,4,5,5a,8,9,9b,10,11-dodecahydro-1h-indeno[5,4-f]quinoline-1-carboxamide Chemical compound CN([C@@H]1CC2)C(=O)CC[C@]1(C)[C@@H]1[C@@H]2[C@@H]2CC[C@H](C(=O)N(CC)CC)[C@@]2(C)CC1 GNWBLLYJQXKPIP-ZOGIJGBBSA-N 0.000 description 3
- 239000000654 additive Substances 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 2
- 229910021393 carbon nanotube Inorganic materials 0.000 description 2
- 239000002041 carbon nanotube Substances 0.000 description 2
- QHGJSLXSVXVKHZ-UHFFFAOYSA-N dilithium;dioxido(dioxo)manganese Chemical compound [Li+].[Li+].[O-][Mn]([O-])(=O)=O QHGJSLXSVXVKHZ-UHFFFAOYSA-N 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 125000001072 heteroaryl group Chemical group 0.000 description 2
- 125000000592 heterocycloalkyl group Chemical group 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 125000000959 isobutyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])* 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- GWCFTYITFDWLAY-UHFFFAOYSA-N 1-ethylazepan-2-one Chemical compound CCN1CCCCCC1=O GWCFTYITFDWLAY-UHFFFAOYSA-N 0.000 description 1
- KYWXRBNOYGGPIZ-UHFFFAOYSA-N 1-morpholin-4-ylethanone Chemical compound CC(=O)N1CCOCC1 KYWXRBNOYGGPIZ-UHFFFAOYSA-N 0.000 description 1
- VGTSJKBOTYPCLW-UHFFFAOYSA-N 1-propanoylazepan-2-one Chemical compound CCC(=O)N1CCCCCC1=O VGTSJKBOTYPCLW-UHFFFAOYSA-N 0.000 description 1
- CYUJQUXOKCNYFX-UHFFFAOYSA-N 3-butoxy-n-methylpropanamide Chemical compound CCCCOCCC(=O)NC CYUJQUXOKCNYFX-UHFFFAOYSA-N 0.000 description 1
- XMWRBQBLMFGWIX-UHFFFAOYSA-N C60 fullerene Chemical class C12=C3C(C4=C56)=C7C8=C5C5=C9C%10=C6C6=C4C1=C1C4=C6C6=C%10C%10=C9C9=C%11C5=C8C5=C8C7=C3C3=C7C2=C1C1=C2C4=C6C4=C%10C6=C9C9=C%11C5=C5C8=C3C3=C7C1=C1C2=C4C6=C2C9=C5C3=C12 XMWRBQBLMFGWIX-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910012851 LiCoO 2 Inorganic materials 0.000 description 1
- 229910010707 LiFePO 4 Inorganic materials 0.000 description 1
- 229910015643 LiMn 2 O 4 Inorganic materials 0.000 description 1
- 229910015014 LiNiCoAlO Inorganic materials 0.000 description 1
- 229910013210 LiNiMnCoO Inorganic materials 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 239000006230 acetylene black Substances 0.000 description 1
- 239000013543 active substance Substances 0.000 description 1
- 239000002671 adjuvant Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- NDPGDHBNXZOBJS-UHFFFAOYSA-N aluminum lithium cobalt(2+) nickel(2+) oxygen(2-) Chemical compound [Li+].[O--].[O--].[O--].[O--].[Al+3].[Co++].[Ni++] NDPGDHBNXZOBJS-UHFFFAOYSA-N 0.000 description 1
- 239000006256 anode slurry Substances 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 125000004104 aryloxy group Chemical group 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000011203 carbon fibre reinforced carbon Substances 0.000 description 1
- 239000006257 cathode slurry Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 125000000753 cycloalkyl group Chemical group 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 229910003472 fullerene Inorganic materials 0.000 description 1
- 229910021389 graphene Inorganic materials 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 150000002430 hydrocarbons Chemical group 0.000 description 1
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- OVAQODDUFGFVPR-UHFFFAOYSA-N lithium cobalt(2+) dioxido(dioxo)manganese Chemical compound [Li+].[Mn](=O)(=O)([O-])[O-].[Co+2] OVAQODDUFGFVPR-UHFFFAOYSA-N 0.000 description 1
- 150000002642 lithium compounds Chemical class 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
- 239000012528 membrane Substances 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- XAROAZKXMDRYAF-UHFFFAOYSA-N n,n-dibutylpropanamide Chemical compound CCCCN(C(=O)CC)CCCC XAROAZKXMDRYAF-UHFFFAOYSA-N 0.000 description 1
- YKOQQFDCCBKROY-UHFFFAOYSA-N n,n-diethylpropanamide Chemical compound CCN(CC)C(=O)CC YKOQQFDCCBKROY-UHFFFAOYSA-N 0.000 description 1
- ARCMPHHHUFVAOI-UHFFFAOYSA-N n,n-dipropylpropanamide Chemical compound CCCN(CCC)C(=O)CC ARCMPHHHUFVAOI-UHFFFAOYSA-N 0.000 description 1
- 125000004108 n-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 125000004123 n-propyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 238000012705 nitroxide-mediated radical polymerization Methods 0.000 description 1
- 230000009972 noncorrosive effect Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000000546 pharmaceutical excipient Substances 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 125000003808 silyl group Chemical group [H][Si]([H])([H])[*] 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 229920003048 styrene butadiene rubber Polymers 0.000 description 1
- 125000000547 substituted alkyl group Chemical group 0.000 description 1
- 125000003107 substituted aryl group Chemical group 0.000 description 1
- 125000005346 substituted cycloalkyl group Chemical group 0.000 description 1
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 230000002110 toxicologic effect Effects 0.000 description 1
- 231100000027 toxicology Toxicity 0.000 description 1
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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
- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
- H01M4/139—Processes of manufacture
-
- 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
- H01M4/131—Electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx
-
- 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
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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
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- H01M4/139—Processes of manufacture
- H01M4/1391—Processes of manufacture of electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx
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Abstract
【選択図】なし
Description
式2の第2の化合物のうちの1つ以上であって、
式3の第3の化合物のうちの1つ以上であって、
式4の第4の化合物のうちの1つ以上であって、
米国特許実務の目的のため、任意の参照される特許、特許出願、または公開の内容は、特に定義の開示(本開示に具体的に提供されるあらゆる定義と矛盾しない程度に)および当該技術分野における一般的知識に関して、それらの全体が参照により組み込まれる(またはその同等の米国版が参照によりそのように組み込まれる)。
図1は、NMPが溶媒として使用されるリチウムイオン電池のための従来の製造プロセスのフロー図を示す。NMPは、ポリフッ化ビニリデン(PVDF)のようなバインダーポリマーを溶解するための溶媒として使用され、その後導電剤、活物質、および他の添加剤のスラリーを形成するために使用される。代替的なバインダーポリマーには、セルロースならびにスチレンブタジエンゴム(SBR)グラフェンおよび/またはフラーレンが含まれるが、これらに限定されない。導電剤には、カーボンブラック、カーボンナノチューブが含まれるが、これらに限定されない。活物質には、コバルト酸リチウム(LiCoO2)、マンガン酸リチウム(LiMn2O4)、ニッケルマンガン酸コバルトリチウム(LiNiMnCoO2またはNMC)、リン酸鉄リチウム(LiFePO4)、リチウムニッケルコバルトアルミニウム酸化物(LiNiCoAlO2)、およびチタン酸リチウム(Li4Ti5O12)が含まれるが、これらに限定されない。次いで、スラリーをホイル、典型的にはカソードにはアルミニウム、アノードには銅上にコーティングし、次いで、コーティングされたホイルを乾燥させる。
本開示の実施において使用される溶媒は、図1に示されるようなリチウムイオン電池製造プロセスにおけるNMPの代替溶媒である。これらの溶媒は、本明細書にさらに記載されるような式1、2、3、または4の化合物のうちの1つ以上からなる、または本質的にそれらからなる。一実施形態では、溶媒は、式1、2、3、または4の任意の化合物のうちの1つのみからなる。一実施形態では、溶媒は、式1、2、3、または4の任意の2つの化合物の混合物からなる。一実施形態では、溶媒は、式1、2、3、または4の任意の3つの化合物の混合物からなる。一実施形態では、溶媒は、式1、2、3、または4の4つすべての化合物の混合物からなる。溶媒が、式1、2、3、または4の2つ以上の化合物の混合物からなるそれらの実施形態では、混合物中の化合物のいずれか1つの量は、混合物の重量の1〜99、または10〜90、または20〜80、または30〜70、または40〜60重量パーセント(重量%)の範囲であり得る。一実施形態では、溶媒の混合物中の各溶媒は、混合物中の他の溶媒のそれぞれの20、または15、または10、または5、または3、または1重量%以内の量で存在する。
バインダーポリマーは、Kurehaから入手可能なポリフッ化ビニリデン(PVDF)であるKUREHA(商標)7200であった。
95グラム(g)の比較または発明の溶媒サンプルを別々のビーカーに入れ、60℃に加熱する。5gのPVDF粉末を計量し、個々の加熱した溶媒に添加する。溶媒とPVDFとの混合物をビーカー内で60℃で撹拌し、PVDFが溶媒に完全に溶解した時間を記録する。次いで、PVDF溶液をブルックフィールド粘度計(no.#62スピンドル)で試験する。結果を表1に報告する。
Claims (12)
- リチウムイオン電池のカソードまたはアノードを作製するプロセスであって、前記プロセスが、活物質、導電剤、バインダーポリマー、および溶媒のスラリーを形成するステップを含み、前記溶媒が、本質的に式1の第1の化合物のうちの1つ以上であって、
式2の第2の化合物のうちの1つ以上であって、
式3の第3の化合物のうちの1つ以上であって、
式4の第4の化合物のうちの1つ以上であって、
- 前記溶媒が、式1の化合物からなる、請求項1に記載のプロセス。
- 前記溶媒が、N,N−ジメチルプロピオンアミドである、請求項2に記載のプロセス。
- 前記溶媒が、式2の化合物からなる、請求項1に記載のプロセス。
- 前記溶媒が、N,N−ジエチルアセトアミドである、請求項4に記載のプロセス。
- 前記溶媒が、式3の化合物からなる、請求項1に記載のプロセス。
- 前記溶媒が、3−メトキシ−N,N−ジメチルプロピオンアミドである、請求項6に記載のプロセス。
- 前記溶媒が、式4の化合物からなる、請求項1に記載のプロセス。
- 前記溶媒が、N,N−ジメチルブチルアミドである、請求項8に記載のプロセス。
- 前記バインダーポリマーが、ポリフッ化ビニリデンである、請求項1〜9のいずれか一項に記載のプロセス。
- 請求項1〜10のいずれか一項に記載のプロセスによって作製された、カソードまたはアノード。
- 請求項11に記載のカソードまたはアノードを備える、リチウムイオン電池。
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