WO2023121323A1 - 2종의 고체전해질층을 포함하는 전고체전지 및 이의 제조방법 - Google Patents
2종의 고체전해질층을 포함하는 전고체전지 및 이의 제조방법 Download PDFInfo
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- WO2023121323A1 WO2023121323A1 PCT/KR2022/021011 KR2022021011W WO2023121323A1 WO 2023121323 A1 WO2023121323 A1 WO 2023121323A1 KR 2022021011 W KR2022021011 W KR 2022021011W WO 2023121323 A1 WO2023121323 A1 WO 2023121323A1
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- WIPO (PCT)
- Prior art keywords
- solid electrolyte
- electrolyte layer
- solid
- state battery
- negative electrode
- Prior art date
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Classifications
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- 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
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- H—ELECTRICITY
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- H01M10/05—Accumulators with non-aqueous electrolyte
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- 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
- H01M10/0562—Solid materials
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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
- H01M2300/00—Electrolytes
- H01M2300/0017—Non-aqueous electrolytes
- H01M2300/0065—Solid electrolytes
- H01M2300/0068—Solid electrolytes inorganic
- H01M2300/008—Halides
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2300/00—Electrolytes
- H01M2300/0088—Composites
- H01M2300/0091—Composites in the form of mixtures
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2300/00—Electrolytes
- H01M2300/0088—Composites
- H01M2300/0094—Composites in the form of layered products, e.g. coatings
-
- 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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- 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
Definitions
- the negative electrode may not include a negative electrode mixture layer.
- the binder is a component that assists in the bonding of the active material and the conductive material and the bonding with respect to the current collector, and is typically added in an amount of 1% to 30% by weight based on the total weight of the mixture including the positive electrode active material.
- binders include polyvinylidene fluoride, polyvinyl alcohol, carboxymethylcellulose (CMC), starch, hydroxypropylcellulose, regenerated cellulose, polyvinylpyrrolidone, polytetrafluoroethylene, It may include at least one selected from the group consisting of polyethylene, polypropylene, ethylene-propylene-diene monomer rubber (EPDM rubber), styrene butyrene rubber, fluororubber, and copolymers thereof.
- the binder may be, for example, polytetrafluoroethylene, polyethyleneoxide, polyethyleneglycol, polyacrylonitrile, polyvinylchloride, polymethylmethacrylate ( polymethylmethacrylate), polypropyleneoxide, polyphosphazene, polysiloxane, polydimethylsiloxane, polyvinylidenefluoride, polyvinylidene fluoride-hexafluoropropylene copolymer (PVDF-HFP), polyvinylidene fluoride-chlorotrifluoroethylene copolymer (PVDF-CTFE), polyvinylidene fluoride-tetrafluoroethylene copolymer (PVDF-TFE), polyvinylidenecarbonate At least one selected from the group consisting of polyvinylpyrrolidinone, styrene-butadiene rubber, nitrile-butadiene rubber, and hydrogenated nitrile butadiene rubber can include
- the amount of the binder included in the first solid electrolyte layer may be 0.2 wt % to 15 wt %, and specifically 1 wt % to 10 wt %, based on the weight of the total solids included in the first solid electrolyte layer. It may be included in %, and more specifically, it may be included in 1% to 5% by weight.
- agirodite Li 6 PS 5 Cl
- polytetrafluoroethylene as a binder are dispersed in Anisole at a weight ratio of 95: 5 and stirred to form a first solid An electrolyte layer slurry was prepared.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical Kinetics & Catalysis (AREA)
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- General Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
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Abstract
Description
이온전도도 (mS/cm) | |
제조예 1 | 0.6 |
제조예 2 | 0.7 |
제조예 3 | 0.4 |
참고예 | 2.0 |
초기 충전용량 (mAh) | 초기 방전용량 (mAh) | 충방전 효율(%) | 유지율 (%@5cycle) | |
실시예 1 | 27.0 | 24.2 | 89.6 | 99.9 |
실시예 2 | 28.7 | 25.8 | 89.9 | 99.7 |
실시예 3 | 26.8 | 23.8 | 88.8 | 99.7 |
실시예 4 | 27.2 | 24.4 | 89.7 | 99.9 |
비교예 1 | 23.4 | 20.3 | 86.8 | 92.8 |
비교예 2 | - | - | - | - |
비교예 3 | 27.3 | 24.3 | 89.0 | 94.9 |
비교예 4 | 부서짐 | - | - | - |
비교예 5 | 2층이 분리됨 | - | - | - |
비교예 6 | Short | - | - | - |
비교예 7 | Short | - | - | - |
Claims (14)
- 양극, 음극, 및 상기 양극과 음극 사이에 개재되는 고체전해질을 포함하고,상기 고체전해질은 바인더를 포함하는 제1고체전해질층, 및 바인더를 포함하지 않는 제2고체전해질층으로 구성되며,상기 제2고체전해질층이 상기 음극과 대면하는 전고체전지.
- 제1항에 있어서, 상기 바인더는 폴리테트라플루오로에틸렌(polytetrafluoroethylene), 폴리에틸렌옥사이드 (polyethyleneoxide), 폴리에틸렌글리콜(polyethyleneglycol), 폴리아크릴로니트릴(polyacrylonitrile), 폴리비닐클로라이드(polyvinylchloride), 폴리메틸메타크릴레이트(polymethylmethacrylate), 폴리프로필렌옥사이드(polypropyleneoxide), 폴리포스파젠(Polyphosphazene), 폴리실록산(Polysiloxane), 폴리디메틸실록산(polydimethylsiloxane), 폴리비닐리덴플루오라이드(polyvinylidenefluoride), 폴리비닐리덴플루오라이드-헥사플루오로프로필렌 공중합체(PVDF-HFP), 폴리비닐리덴플루오라이드-클로로트리플루오로에틸렌 공중합체(PVDF-CTFE), 폴리비닐리덴플루오라이드-테트라플루오로에틸렌 공중합체(PVDF-TFE), 폴리비닐리덴카보네이트(polyvinylidenecarbonate), 폴리비닐피롤리디논(polyvinylpyrrolidinone), 스티렌부타디엔 고무(styrene-butadiene rubber), 니트릴부타디엔 고무(nitrile-butadiene rubber), 및 수소화 니트릴부타디엔 고무(Hydrogenated nitrile butadiene rubber)로 이루어진 군에서 선택된 1종 이상인 전고체전지.
- 제1항에 있어서, 상기 제1고체전해질층과 상기 제2고체전해질층은 바인더를 제외한 나머지 구성 성분들이 서로 동일한 전고체전지.
- 제1항에 있어서, 상기 제1고체전해질층의 두께는 상기 제2고체전해질층의 두께와 동일하거나 더 두꺼운 전고체전지.
- 제1항에 있어서, 상기 제1고체전해질층에 포함되는 바인더의 함량은 상기 제1고체전해질층에 포함되는 전체 고형분의 중량을 기준으로 0.2 중량% 내지 15 중량%로 포함되는 전고체전지.
- 제1항에 있어서, 상기 제1고체전해질층과 제2고체전해질층은 접착된 상태인 전고체전지.
- 제1항에 있어서, 상기 음극은 음극 합제층을 포함하지 않는 전고체전지.
- 제1항에 있어서, 상기 음극은 코팅층과 이온 전달층을 포함하는 전고체전지.
- 제1항에 있어서, 상기 제2고체전해질층의 표면에 있는 고체전해질 입자들은 상기 음극과 접촉하고 있는 전고체전지.
- 제1항 내지 제9항 중 어느 한 항에 따른 전고체전지를 단위셀로 포함하는 전지모듈.
- 제1항 내지 제9항 중 어느 한 항에 따른 전고체전지의 제조방법으로서,(a) 제1고체전해질층 슬러리와 제2고체전해질층 슬러리를 제조하는 단계;(b) 상기 제1고체전해질층 슬러리 및 제2고체전해질층 슬러리를 각각의 이형 필름에 코팅하는 단계;(c) 상기 단계 (b)에서 제조된 제1고체전해질층 슬러리 코팅층과 제2고체전해질층 슬러리 코팅층을 건조하여 제1고체전해질층 및 제2고체전해질층을 형성하는 단계;(d) 상기 제1고체전해질층과 상기 제2고체전해질층이 대면하도록 적층하고 가압하는 단계;(e) 상기 이형 필름을 제거하여 고체전해질층을 수득하는 단계; 및(f) 양극과 음극 사이에 상기 고체전해질층을 배치하여 전고체전지를 조립하는 단계;를 포함하고,상기 제2고체전해질층이 상기 음극과 대면하도록 배치하는 전고체전지의 제조방법.
- 제11항에 있어서, 상기 단계 (d)는 등방압 가압방법으로 진행되는 전고체전지의 제조방법.
- 제12항에 있어서, 등방압 가압시 압력은 10 MPa 내지 100MPa인 전고체전지의 제조방법.
- 제11항에 있어서, 상기 단계 (d)의 온도는 5 ℃ 내지 150 ℃인 전고체전지의 제조방법.
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US18/575,747 US20240356063A1 (en) | 2021-12-24 | 2022-12-21 | All-solid-state battery comprising two types of solid electrolyte layers and method for manufacturing same |
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Citations (7)
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JP5930035B2 (ja) | 2012-07-11 | 2016-06-08 | トヨタ自動車株式会社 | 全固体電池及びその製造方法 |
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CN111430789A (zh) * | 2019-11-29 | 2020-07-17 | 蜂巢能源科技有限公司 | 降低固态电解质层孔隙率的方法及其应用 |
KR20210022197A (ko) * | 2019-08-19 | 2021-03-03 | 한국생산기술연구원 | 이중구조의 복합 고체 전해질층, 그를 포함하는 전고체 리튬이차전지 및 그의 제조방법 |
JP6936661B2 (ja) * | 2017-08-25 | 2021-09-22 | 日立造船株式会社 | 全固体電池の製造方法 |
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JP5930035B2 (ja) | 2012-07-11 | 2016-06-08 | トヨタ自動車株式会社 | 全固体電池及びその製造方法 |
KR20170055325A (ko) | 2015-11-11 | 2017-05-19 | 현대자동차주식회사 | 전고체 배터리용 전해질층 및 이를 이용한 전고체 배터리의 제조방법 |
KR20190111996A (ko) * | 2017-01-31 | 2019-10-02 | 히다치 조센 가부시키가이샤 | 전고체 전지 및 그 제조방법 |
JP6936661B2 (ja) * | 2017-08-25 | 2021-09-22 | 日立造船株式会社 | 全固体電池の製造方法 |
KR20200042344A (ko) * | 2018-10-15 | 2020-04-23 | 주식회사 엘지화학 | 전고체 전지 제조 방법 |
KR20210022197A (ko) * | 2019-08-19 | 2021-03-03 | 한국생산기술연구원 | 이중구조의 복합 고체 전해질층, 그를 포함하는 전고체 리튬이차전지 및 그의 제조방법 |
CN111430789A (zh) * | 2019-11-29 | 2020-07-17 | 蜂巢能源科技有限公司 | 降低固态电解质层孔隙率的方法及其应用 |
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