WO2023047795A1 - Batterie au lithium-ion avec film barrière et procédé de production d'une batterie au lithium-ion avec film barrière - Google Patents

Batterie au lithium-ion avec film barrière et procédé de production d'une batterie au lithium-ion avec film barrière Download PDF

Info

Publication number
WO2023047795A1
WO2023047795A1 PCT/JP2022/029106 JP2022029106W WO2023047795A1 WO 2023047795 A1 WO2023047795 A1 WO 2023047795A1 JP 2022029106 W JP2022029106 W JP 2022029106W WO 2023047795 A1 WO2023047795 A1 WO 2023047795A1
Authority
WO
WIPO (PCT)
Prior art keywords
barrier film
battery
barrier
buffer layer
layer
Prior art date
Application number
PCT/JP2022/029106
Other languages
English (en)
Japanese (ja)
Inventor
高佳 藤元
誠樹 森
Original Assignee
東レエンジニアリング株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 東レエンジニアリング株式会社 filed Critical 東レエンジニアリング株式会社
Publication of WO2023047795A1 publication Critical patent/WO2023047795A1/fr

Links

Images

Classifications

    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
    • C23C16/22—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the deposition of inorganic material, other than metallic material
    • C23C16/30—Deposition of compounds, mixtures or solid solutions, e.g. borides, carbides, nitrides
    • C23C16/42—Silicides
    • 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
    • H01M10/058—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
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/116—Primary casings; Jackets or wrappings characterised by the material
    • H01M50/117—Inorganic material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/116—Primary casings; Jackets or wrappings characterised by the material
    • H01M50/124—Primary casings; Jackets or wrappings characterised by the material having a layered structure
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/183—Sealing members
    • H01M50/184—Sealing members characterised by their shape or structure
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/183—Sealing members
    • H01M50/19—Sealing members characterised by the material
    • H01M50/191—Inorganic material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/183—Sealing members
    • H01M50/19—Sealing members characterised by the material
    • H01M50/197—Sealing members characterised by the material having a layered structure
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/183—Sealing members
    • H01M50/19—Sealing members characterised by the material
    • H01M50/198—Sealing members characterised by the material characterised by physical properties, e.g. adhesiveness or hardness
    • 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

Definitions

  • the present invention relates to a lithium-ion battery with a barrier film in which a barrier film is formed at a predetermined position of the lithium-ion battery, and a method for manufacturing the lithium-ion battery with a barrier film.
  • a lithium ion battery 910 is formed by a chemical vapor deposition method or an atomic layer deposition method as shown in FIG.
  • a barrier film 920 is formed so as to cover it. This prevents moisture from entering the lithium ion battery 910 .
  • a lithium ion battery 910 has a portion that cannot be covered with a barrier film 920 for electrical connection with an external circuit. Therefore, there is a possibility that a small amount of moisture may enter the lithium ion battery 910 . Although this small amount of moisture cannot be prevented from entering, it is allowed because it has little direct effect on deterioration of the lithium ion battery 910 .
  • the barrier film 920 is etched by hydrogen fluoride generated when a small amount of water enters the lithium ion battery 910 .
  • the barrier film 920 loses its barrier properties, and it is no longer possible to prevent moisture from entering the lithium ion battery 910 .
  • the present invention has been made in view of the above problems, and provides a barrier film-equipped lithium ion battery and a method for producing a barrier film-equipped lithium ion battery that can suppress etching by hydrogen fluoride and maintain barrier properties. It is intended to
  • the barrier film has a barrier layer that suppresses the infiltration of moisture into the battery portion and a buffer layer that has higher etching resistance to hydrogen fluoride than the barrier layer. Since it is formed on at least a part of the outer peripheral surface of the battery section so as to be in contact with the barrier layer, etching of the barrier layer can be prevented even if hydrogen fluoride is generated from the battery section. Therefore, the barrier properties of the barrier film can be maintained, and the penetration of moisture into the battery section can be suppressed.
  • a lithium ion battery with a barrier film according to the present invention for solving the above-mentioned problems is a barrier in which a battery portion is formed on a substrate, and a barrier film is formed at least partly between the battery portion and the substrate.
  • the barrier film has a barrier layer that suppresses permeation of moisture into the battery portion, and a buffer layer that has higher etching resistance to hydrogen fluoride than the barrier layer. and the barrier film is formed so that the buffer layer is in contact with the battery portion.
  • the buffer layer may contain Si, C, H, and O as components, and at least the content of O may be less than the content of C.
  • the buffer layer is mainly formed of SiC, which has high etching resistance to hydrogen fluoride, the etching resistance to hydrogen fluoride is increased. Therefore, etching of the barrier layer can be prevented.
  • the buffer layer may contain Si, C or Si, N as a component.
  • the buffer layer is mainly formed of SiC and SiN, which have high etching resistance to hydrogen fluoride, so the etching resistance to hydrogen fluoride is high. Therefore, etching of the barrier layer can be prevented.
  • the buffer layer may be in contact with any part of the battery section containing a lithium salt.
  • the barrier film is formed so that the portion containing the lithium salt that generates hydrogen fluoride and the buffer layer are in contact with each other, the barrier film is positioned near the portion containing the lithium salt that frequently generates hydrogen fluoride. It is possible to prevent the barrier layer to be etched by hydrogen fluoride.
  • a method for manufacturing a lithium-ion battery with a barrier film according to the present invention for solving the above-mentioned problems comprises a battery part forming apparatus for forming a battery part, a barrier layer that suppresses permeation of moisture into the battery part, and the barrier layer.
  • the barrier film having a barrier layer that suppresses the infiltration of moisture into the battery portion and a buffer layer that has a higher etching resistance to hydrogen fluoride than the barrier layer is formed. Since the barrier film is formed by laminating the barrier layer and the buffer layer on at least a part of the outer peripheral surface of the battery part so as to be in contact with the battery part, even if hydrogen fluoride is generated from the battery part, the barrier film is formed. It is possible to prevent the layer from being etched. Therefore, the barrier properties of the barrier film can be maintained, and the penetration of moisture into the battery section can be suppressed.
  • a method for manufacturing a lithium ion battery with a barrier film according to the present invention for solving the above problems comprises a battery part forming apparatus for forming a battery part on a base material, and a barrier layer that suppresses the infiltration of moisture into the battery part. and a buffer layer having higher etching resistance to hydrogen fluoride than the barrier layer, and a film forming apparatus for forming a barrier film at a predetermined position of the base material. and forming the barrier film by the film forming apparatus by laminating the barrier layer and the buffer layer at a predetermined position on the base material so that the buffer layer is the outermost surface. and forming the battery part on the barrier film formed on the substrate by the battery part forming apparatus.
  • the barrier film having a barrier layer that suppresses the infiltration of moisture into the battery portion and a buffer layer that has a higher etching resistance to hydrogen fluoride than the barrier layer is formed. It is formed at a predetermined position on the base material so as to be the outermost surface, and the battery portion is formed on this formed barrier film, so even if hydrogen fluoride is generated from the battery portion, the barrier layer will not be etched. can be prevented. Therefore, the barrier properties of the barrier film can be maintained, and the penetration of moisture into the battery portion from the substrate side can be suppressed.
  • the structure may include a step of modifying the surface of the barrier film formed on the base material so as to increase the lyophilic property before forming the battery portion.
  • the surface of the barrier film is modified so as to increase the lyophilic property, it is possible to make it difficult for the barrier film and the battery portion to separate.
  • etching by hydrogen fluoride can be suppressed and barrier properties can be maintained.
  • FIG. 1 is a diagram showing a lithium-ion battery with a barrier film according to one embodiment of the present invention
  • FIG. FIG. 4 is a diagram for explaining a method for manufacturing a lithium ion battery with a barrier film according to one embodiment of the present invention
  • FIG. 4 is a diagram for explaining a method for manufacturing a lithium ion battery with a barrier film according to one embodiment of the present invention
  • FIG. 4 is a diagram showing variations of the barrier film-equipped lithium-ion battery according to one embodiment of the present invention.
  • 1 is a diagram showing a conventional lithium-ion battery with a barrier film
  • Lithium-ion battery with barrier film A lithium ion battery with a barrier film according to one embodiment of the present invention will be described with reference to the drawings.
  • the three axes of the orthogonal coordinate system are X, Y, and Z, the horizontal direction is expressed as the X-axis direction and the Y-axis direction, and the direction perpendicular to the XY plane (that is, the vertical direction) is the Z-axis. expressed as direction.
  • FIG. 1 is a diagram showing a lithium ion battery 100 with a barrier film according to this embodiment, showing a cross-sectional view of the lithium ion battery 100 with a barrier film in the Y-axis direction.
  • the lithium ion battery 100 with a barrier film according to the present embodiment is a lithium ion battery on which a barrier film is formed in order to suppress the infiltration of moisture. As shown in FIG. 1 and a barrier film 2 .
  • the base material W in this embodiment is a long film-like member, and is preferably a resin film such as polyethylene naphthalate (PEN), polyimide resin (PI), or polyethylene terephthalate (PET).
  • PEN polyethylene naphthalate
  • PI polyimide resin
  • PET polyethylene terephthalate
  • the base material W is transported to the step of forming the battery part 1 and the barrier film 2 by a transport device (not shown).
  • the conveying device is, for example, a roll-to-roll type conveying device, and conveys the base material W to a battery part forming device (not shown) described later and a film forming device (not shown) described later.
  • the battery section 1 in this embodiment is a lithium ion battery composed of a positive electrode current collector 11, a positive electrode active material layer 12, an electrolyte layer 13, a negative electrode active material layer 14, and a negative electrode current collector 15. As shown, it is formed on a first barrier film 21, which will be described later, formed on the substrate W. As shown in FIG.
  • the positive electrode current collector 11 is in electrical contact with an external circuit, and is formed on the first barrier film 21 formed on the substrate W as shown in FIG.
  • This positive electrode current collector 11 is made of aluminum.
  • the cathode active material layer 12 is formed on the cathode current collector 11 as shown in FIG.
  • the cathode active material layer 12 is made of lithium ion-containing transition metal oxides such as LiCoO 2 , LiNiO 2 and LiMn 2 O 4 .
  • the cathode active material layer 12 is not limited to the lithium ion-containing transition metal oxide, and may be made of a non-oxide such as LiFePO 4 .
  • the barrier film 2 in the present embodiment is for suppressing the infiltration of moisture into the battery portion 1, and as shown in FIG. It is formed on part of the surface.
  • the barrier film 2 formed between the base material W and the battery portion 1 will be referred to as the first barrier film 21, and the barrier film 2 formed on part of the outer peripheral surface of the battery portion 1 will be referred to as the second barrier film. 2 barrier film 22 .
  • the second barrier film 22 is for suppressing the infiltration of moisture into the battery portion 1 from the outside other than the substrate W side, and is formed on the outer peripheral surface of the battery portion 1 as shown in FIG. there is Like the first barrier film 21, the second barrier film 22 has a barrier layer 22a and a buffer layer 22b. 22a is deposited so as to be laminated on the buffer layer 22b. These barrier layer 22a and buffer layer 22b contain the same components as those of the barrier layer 21a and the buffer layer 21b in the first barrier film 21, respectively.
  • the second barrier film 22 is preferably formed so that the positive electrode current collector 11 and the negative electrode current collector 15 of the battery section 1 are partially exposed so that they can be connected to an external circuit.
  • the buffer layer 21b and/or the buffer layer 22b are in contact with at least the portion of the battery section 1 containing lithium salt (the electrolyte layer 13 in this embodiment). This can prevent the barrier layer 21a and/or the barrier layer 22a located in the vicinity of the portion where hydrogen fluoride is frequently generated from being etched.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Electrochemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Secondary Cells (AREA)
  • Chemical Vapour Deposition (AREA)
  • Sealing Battery Cases Or Jackets (AREA)

Abstract

Le but de la présente invention est de fournir une batterie au lithium-ion avec un film barrière qui est capable de supprimer la gravure par le fluorure d'hydrogène et de maintenir des propriétés de barrière, et un procédé de production de la batterie au lithium-ion avec un film barrière. La batterie au lithium-ion comprend un film barrière dans laquelle le film barrière est formé sur au moins une partie de la surface périphérique externe d'une partie de batterie, le film barrière ayant une couche barrière qui supprime l'infiltration d'humidité dans la partie de batterie, et une couche tampon ayant une résistance à la gravure au fluorure d'hydrogène supérieure à celle de la couche barrière, et le film barrière est formé de telle sorte que la couche tampon est en contact avec la partie de batterie.
PCT/JP2022/029106 2021-09-22 2022-07-28 Batterie au lithium-ion avec film barrière et procédé de production d'une batterie au lithium-ion avec film barrière WO2023047795A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2021-153838 2021-09-22
JP2021153838A JP2023045437A (ja) 2021-09-22 2021-09-22 バリア膜付きリチウムイオン電池およびバリア膜付きリチウムイオン電池の製造方法

Publications (1)

Publication Number Publication Date
WO2023047795A1 true WO2023047795A1 (fr) 2023-03-30

Family

ID=85720502

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2022/029106 WO2023047795A1 (fr) 2021-09-22 2022-07-28 Batterie au lithium-ion avec film barrière et procédé de production d'une batterie au lithium-ion avec film barrière

Country Status (2)

Country Link
JP (1) JP2023045437A (fr)
WO (1) WO2023047795A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010090124A1 (fr) * 2009-02-03 2010-08-12 ソニー株式会社 Batterie secondaire au lithium à couche mince semi-conductrice et son procédé de fabrication
JP2013016286A (ja) * 2011-06-30 2013-01-24 Ulvac Japan Ltd 薄膜リチウム二次電池形成装置
JP2014049205A (ja) * 2012-08-29 2014-03-17 Ulvac Japan Ltd 薄膜リチウム二次電池製造方法、マスク、薄膜リチウム二次電池製造装置
JP2015026563A (ja) * 2013-07-29 2015-02-05 富士通株式会社 全固体二次電池とその製造方法、及び電子機器

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010090124A1 (fr) * 2009-02-03 2010-08-12 ソニー株式会社 Batterie secondaire au lithium à couche mince semi-conductrice et son procédé de fabrication
JP2013016286A (ja) * 2011-06-30 2013-01-24 Ulvac Japan Ltd 薄膜リチウム二次電池形成装置
JP2014049205A (ja) * 2012-08-29 2014-03-17 Ulvac Japan Ltd 薄膜リチウム二次電池製造方法、マスク、薄膜リチウム二次電池製造装置
JP2015026563A (ja) * 2013-07-29 2015-02-05 富士通株式会社 全固体二次電池とその製造方法、及び電子機器

Also Published As

Publication number Publication date
JP2023045437A (ja) 2023-04-03

Similar Documents

Publication Publication Date Title
TWI591875B (zh) 用於薄膜電池之電芯
Li et al. Air‐stable protective layers for lithium anode achieving safe lithium metal batteries
US9373869B2 (en) Bipolar all-solid-state battery
JP5372954B2 (ja) 構造および／または電気化学特性のための均質二重層の固体薄膜蒸着
KR102357946B1 (ko) 올레핀 분리기가 없는 Li-이온 배터리
US9109286B2 (en) Method of manufacturing power storage device
US20120135292A1 (en) Conformal solid state package method and device for a battery device
JP2010245031A (ja) 蓄電デバイス及びその作製方法
KR20100032312A (ko) 캡슐화층을 포함하는 리튬 마이크로전지 및 제조 방법
JP6936670B2 (ja) リチウムイオン電池用セパレータ
WO2023047795A1 (fr) Batterie au lithium-ion avec film barrière et procédé de production d'une batterie au lithium-ion avec film barrière
US10903498B2 (en) Hybrid electrolyte design for lithium titanate based lithium ion battery
JP2018081820A (ja) 電池
JP2008021443A (ja) 積層型電池
WO2020004453A1 (fr) Électrode négative pour batterie ion-lithium, batterie ion-lithium utilisant ladite électrode négative et procédé de production de batterie ion-lithium
JP2010080395A (ja) リチウムイオン二次電池用電極板及びリチウムイオン二次電池
JP2020004663A5 (fr)
US11271195B2 (en) Hybrid electrolyte design for titanium niobium oxide based lithium battery
KR20190108295A (ko) 운송 수단용 전고체 전지
JP7469086B2 (ja) 蓄電装置及びその製造方法
US20230411686A1 (en) Layered gel-polymer electrolytes and methods of forming thereof
KR20230119212A (ko) 애노드 구조를 제조하는 방법, 진공 증착 시스템, 애노드구조 및 리튬 배터리 층 스택
KR20220145298A (ko) 전지 셀 및 이를 포함하는 전지 모듈
KR20120079690A (ko) 전극조립체의 제조방법
JP6063247B2 (ja) 車両用非水電解液電池およびその使用方法

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 22872551

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE