JP2022545706A - 全固体電池用リチウム金属単位セルの製造方法及びそれによって製造された単位セル - Google Patents
全固体電池用リチウム金属単位セルの製造方法及びそれによって製造された単位セル Download PDFInfo
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- JP2022545706A JP2022545706A JP2022512835A JP2022512835A JP2022545706A JP 2022545706 A JP2022545706 A JP 2022545706A JP 2022512835 A JP2022512835 A JP 2022512835A JP 2022512835 A JP2022512835 A JP 2022512835A JP 2022545706 A JP2022545706 A JP 2022545706A
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- unit cell
- lithium metal
- solid
- state battery
- lithium
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- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 91
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 claims abstract description 35
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- 238000003825 pressing Methods 0.000 claims description 43
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 19
- 229910052782 aluminium Inorganic materials 0.000 claims description 12
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 10
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 10
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- 229910052759 nickel Inorganic materials 0.000 claims description 10
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 8
- 229910000733 Li alloy Inorganic materials 0.000 claims description 6
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- 229910010864 LiI—Li3PO4—P2S5 Inorganic materials 0.000 description 1
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- 229910013709 LiNi 1-x M Inorganic materials 0.000 description 1
- 229910015872 LiNi0.8Co0.1Mn0.1O2 Inorganic materials 0.000 description 1
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- 229910015103 LixWO2 Inorganic materials 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
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- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- QDDVNKWVBSLTMB-UHFFFAOYSA-N [Cu]=O.[Li] Chemical compound [Cu]=O.[Li] QDDVNKWVBSLTMB-UHFFFAOYSA-N 0.000 description 1
- KFDQGLPGKXUTMZ-UHFFFAOYSA-N [Mn].[Co].[Ni] Chemical compound [Mn].[Co].[Ni] KFDQGLPGKXUTMZ-UHFFFAOYSA-N 0.000 description 1
- XHCLAFWTIXFWPH-UHFFFAOYSA-N [O-2].[O-2].[O-2].[O-2].[O-2].[V+5].[V+5] Chemical class [O-2].[O-2].[O-2].[O-2].[O-2].[V+5].[V+5] XHCLAFWTIXFWPH-UHFFFAOYSA-N 0.000 description 1
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- 229910000411 antimony tetroxide Inorganic materials 0.000 description 1
- ADCOVFLJGNWWNZ-UHFFFAOYSA-N antimony trioxide Inorganic materials O=[Sb]O[Sb]=O ADCOVFLJGNWWNZ-UHFFFAOYSA-N 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 229910021383 artificial graphite Inorganic materials 0.000 description 1
- 229910000417 bismuth pentoxide Inorganic materials 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- OJIJEKBXJYRIBZ-UHFFFAOYSA-N cadmium nickel Chemical compound [Ni].[Cd] OJIJEKBXJYRIBZ-UHFFFAOYSA-N 0.000 description 1
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- NJLLQSBAHIKGKF-UHFFFAOYSA-N dipotassium dioxido(oxo)titanium Chemical compound [K+].[K+].[O-][Ti]([O-])=O NJLLQSBAHIKGKF-UHFFFAOYSA-N 0.000 description 1
- 150000002019 disulfides Chemical class 0.000 description 1
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- PVADDRMAFCOOPC-UHFFFAOYSA-N germanium monoxide Inorganic materials [Ge]=O PVADDRMAFCOOPC-UHFFFAOYSA-N 0.000 description 1
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- KWGKDLIKAYFUFQ-UHFFFAOYSA-M lithium chloride Inorganic materials [Li+].[Cl-] KWGKDLIKAYFUFQ-UHFFFAOYSA-M 0.000 description 1
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- QEXMICRJPVUPSN-UHFFFAOYSA-N lithium manganese(2+) oxygen(2-) Chemical class [O-2].[Mn+2].[Li+] QEXMICRJPVUPSN-UHFFFAOYSA-N 0.000 description 1
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- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or manufacture
- H01M10/0585—Construction or manufacture of accumulators having only flat construction elements, i.e. flat positive electrodes, flat negative electrodes and flat separators
-
- 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
- H01M10/056—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes
- H01M10/0561—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes the electrolyte being constituted of inorganic materials only
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- H—ELECTRICITY
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- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
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- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
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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
- H01M10/00—Secondary cells; Manufacture thereof
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- H01M10/056—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes
- H01M10/0564—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes the electrolyte being constituted of organic materials only
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
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- 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
- H01M4/134—Electrodes based on metals, Si or alloys
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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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- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/38—Selection of substances as active materials, active masses, active liquids of elements or alloys
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- H—ELECTRICITY
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- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
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- H01M4/38—Selection of substances as active materials, active masses, active liquids of elements or alloys
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- 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
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- 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
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Abstract
Description
前記リチウム金属は、純粋リチウム、リチウム合金及びリチウム金属複合酸化物のうちの少なくとも1種以上を含むことができる。前記リチウム合金は、Al、Mg、K、Na、Ca、Sr、Ba、Si、Ge、Sb、Pb、In及びZnからなる群から選択されるものを含むことができる。前記リチウム金属複合酸化物は、リチウムとSi、Sn、Zn、Mg、Cd、Ce、Ni、W及びFeからなる群から選択されるいずれか1種の金属(Me)酸化物(MeOx)であり、一例としてLixFe2O3(0<x≦1)又はLixWO2(0<x≦1)であることができる。
固体電解質は、硫化物系固体電解質、酸化物系固体電解質及び有機固体電解質のうちの少なくとも1種以上を含むことができる。本発明による固体電解質としては、表面がコーティングされるか改質された粒子を使うことができる。
前記正極電極は、例えば正極集電体に正極活物質粒子からなる正極活物質と導電材及びバインダーが混合された正極合剤を塗布して製造することができ、必要によっては前記正極合剤に充填剤をさらに添加することができる。
本発明による全固体電池用リチウム金属単位セルの製造方法は、前述したリチウム金属、固体電解質、正極電極を順に積層して積層体を形成する。前記積層体は、前記リチウム金属、前記固体電解質、前記正極電極を1種以上含むことができる。一例として、前記積層体は、リチウム金属/固体電解質/正極電極からなるフルセルを構成する積層体、リチウム金属/固体電解質/正極電極/固体電解質/リチウム金属からなるC型バイセルを構成する積層体、正極電極/固体電解質/リチウム金属/固体電解質/正極電極からなるA型バイセルを構成する積層体であることができる。
本発明による実施例及び比較例は、まず、1)リチウム金属上に硫化物系固体電解質及び正極電極を積層して積層体を形成する。
気孔度は、押圧前後の積層体の厚さを測定した後、押圧前後のリチウム金属と固体電解質層の厚さを除いた正極の厚さを換算して測定した。
Claims (13)
- (S1)リチウム金属、固体電解質及び正極電極を積層した積層体を形成する段階と、
(S2)前記積層体を100MPa超過470MPa未満で1分~30分間押圧する段階と、
を含む、全固体電池用リチウム金属単位セルの製造方法。 - 前記(S2)の押圧する段階は、前記積層体を470MPaで1分間押圧する段階に代替される、請求項1に記載の全固体電池用リチウム金属単位セルの製造方法。
- 前記押圧する段階で、前記リチウム金属、固体電解質及び正極電極を一度に押圧する、請求項1に記載の全固体電池用リチウム金属単位セルの製造方法。
- 前記押圧する段階は、前記積層体を1分以内に目的圧力まで押圧した後、同じ圧力でずっと押圧する、請求項1に記載の全固体電池用リチウム金属単位セルの製造方法。
- 前記押圧する段階は、熱間等方圧プレス(WIP、Warm Isostatic Press)又は冷間等方圧プレス(CIP、Cold Isostatic Press)を用いて遂行する、請求項1に記載の全固体電池用リチウム金属単位セルの製造方法。
- 前記冷間等方圧プレスは湿式冷間等方圧プレス法である、請求項5に記載の全固体電池用リチウム金属単位セルの製造方法。
- 前記押圧する段階は常温又は高温で遂行する、請求項1に記載の全固体電池用リチウム金属単位セルの製造方法。
- 前記リチウム金属は、純粋リチウム、リチウム金属複合酸化物及びリチウム合金のうちの少なくとも1種以上を含む、請求項1に記載の全固体電池用リチウム金属単位セルの製造方法。
- 前記固体電解質は、硫化物系固体電解質、酸化物系固体電解質及び有機固体電解質のうちの少なくとも1種以上を含む、請求項1に記載の全固体電池用リチウム金属単位セルの製造方法。
- 前記正極電極は、ステンレススチール、アルミニウム、ニッケル、チタン及びアルミニウム又はステンレススチールの表面にカーボン、ニッケル、チタン若しくは銀で表面処理したものの中で少なくとも1種以上を集電体として使用する、請求項1に記載の全固体電池用リチウム金属単位セルの製造方法。
- 請求項1から10のいずれか一項に記載の全固体電池用リチウム金属単位セルの製造方法で製造された、全固体電池用リチウム金属単位セル。
- 前記全固体電池用リチウム金属単位セルは、フルセル、C型バイセル及びA型バイセルのうちのいずれか一つである、請求項11に記載の全固体電池用リチウム金属単位セル。
- 請求項11に記載の全固体電池用リチウム金属単位セルを含む、電極組立体。
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KR1020200035639A KR20210119140A (ko) | 2020-03-24 | 2020-03-24 | 전고체전지용 리튬금속 단위셀의 제조방법 및 그에 의해 제조된 단위셀 |
PCT/KR2021/001006 WO2021194078A1 (ko) | 2020-03-24 | 2021-01-26 | 전고체전지용 리튬금속 단위셀의 제조방법 및 그에 의해 제조된 단위셀 |
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