WO2024013560A1 - Batterie entièrement solide - Google Patents

Batterie entièrement solide Download PDF

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Publication number
WO2024013560A1
WO2024013560A1 PCT/IB2023/000405 IB2023000405W WO2024013560A1 WO 2024013560 A1 WO2024013560 A1 WO 2024013560A1 IB 2023000405 W IB2023000405 W IB 2023000405W WO 2024013560 A1 WO2024013560 A1 WO 2024013560A1
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Prior art keywords
negative electrode
solid
electrolyte
region
porous sheet
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PCT/IB2023/000405
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English (en)
Japanese (ja)
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博基 田口
和史 大谷
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日産自動車株式会社
ルノー エス．ア．エス．
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Publication of WO2024013560A1 publication Critical patent/WO2024013560A1/fr

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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
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/052—Li-accumulators
    • 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
    • H01M10/0562—Solid materials
    • 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
    • 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

Definitions

  • the present invention relates to an all-solid-state battery.
  • An all-solid-state battery is a secondary battery made of solid materials including an electrolyte layer.
  • a positive electrode and a negative electrode are provided with a solid electrolyte layer sandwiched therebetween.
  • charging and discharging are generally performed by moving lithium ions between a positive electrode and a negative electrode.
  • an all-solid-state battery one having a structure in which a solid electrolyte is supported on a porous sheet is known. By supporting a solid electrolyte on a porous sheet, a thin but self-supporting electrolyte layer can be obtained.
  • Patent Document 1 JP2021-533542A.
  • Patent Document 1 discloses that a laminated structure is prepared by sequentially laminating a first protective layer, a first solid electrolyte material in the form of a film, a porous base material, a second solid electrolyte material in the form of a film, and a second protective layer.
  • a method for manufacturing a solid electrolyte membrane for an all-solid-state battery which includes a step of removing a protective layer and a second protective layer, and pressurization is performed by a roll press method.
  • This solid electrolyte membrane is a composite of a porous polymer material such as non-woven fabric and a solid electrolyte material, so it has excellent strength and can be manufactured in a thin film type of 70 ⁇ m or less, allowing the energy of the battery to be This is advantageous for improving density.
  • lithium may be excessively deposited at the end of the negative electrode during charging.
  • an object of the present invention is to provide an all-solid-state battery that can prevent cracking and chipping of the structure on the negative electrode side and prevent excessive precipitation of lithium at the negative end.
  • the all-solid-state battery according to the present invention includes a porous sheet having an electrolyte region supporting a solid electrolyte, and a positive electrode layer laminated on one surface of the porous sheet so as to be in contact with the porous sheet. and a negative electrode structure layer laminated on the other surface of the porous sheet so as to be in contact with the porous sheet.
  • the outer shape of the positive electrode layer and the outer shape of the negative electrode structure layer are the same when viewed along the stacking direction.
  • the electrolyte region expands in shape from the positive electrode layer side toward the negative electrode structure layer side.
  • the end A of the electrolyte region at the interface between the negative electrode structure layer and the electrolyte region is located inside the end of the negative electrode structure layer when viewed along the stacking direction.
  • FIG. 1 is a schematic cross-sectional view showing an all-solid-state battery according to a first embodiment.
  • FIG. 2 is a schematic diagram showing an all-solid-state battery according to a reference example.
  • FIG. 3 is a schematic cross-sectional view showing an all-solid-state battery according to the second embodiment.
  • FIG. 4 is a schematic cross-sectional view showing an all-solid-state battery according to a third embodiment.
  • FIG. 1 is a schematic cross-sectional view showing an all-solid-state battery 1 according to a first embodiment.
  • This all-solid-state battery 1 is a secondary battery that is charged and discharged by moving lithium ions between a positive electrode and a negative electrode.
  • the all-solid-state battery 1 includes a porous sheet 2, a positive electrode layer 3, a negative electrode structure layer 4, a positive electrode current collector 5, and a negative electrode current collector 6. These are laminated in this order: positive electrode current collector 5, positive electrode layer 3, porous sheet 2, negative electrode structure layer 4, and negative electrode current collector 6.
  • the porous sheet 2 is provided with an electrolyte region 7 in which a solid electrolyte is supported.
  • the electrolyte layer can be handled as a self-supporting membrane even if it is thin.
  • the electrolyte region 7 is provided in the center of the porous sheet 2.
  • the outer periphery of the porous sheet 2 is a region where no solid electrolyte is supported (non-supported region 8).
  • the positive electrode layer 3 is provided on one surface of the porous sheet 2 in contact with the porous sheet 2.
  • the negative electrode structure layer 4 is provided on the other surface of the porous sheet 2 in contact with the porous sheet 2 .
  • the positive electrode layer 3 and the negative electrode structure layer 4 are arranged so as to sandwich the electrolyte region 7 in the stacking direction.
  • the positive electrode layer 3 is a layer that functions as an electrode, and is configured to release lithium ions during charging and occlude lithium during discharging.
  • the negative electrode structure layer 4 is defined as a layer provided on the negative electrode side of the porous sheet 2 in contact with the porous sheet 2.
  • the negative electrode structure layer 4 may be the electrode (negative electrode) itself that serves as a place where battery reactions proceed during charging and discharging, but it does not need to be the negative electrode itself.
  • the negative electrode layer may be formed directly on the electrolyte layer.
  • the negative electrode layer itself corresponds to the negative electrode structure layer 4 in this embodiment.
  • the structure formed directly on the negative electrode side of the electrolyte layer is sometimes a "negative electrode protective layer.”
  • the negative electrode protective layer has a structure employed in, for example, "all-deposition type” batteries.
  • a "all-precipitation type” all-solid-state battery means that in a fully discharged state, there is no lithium as a negative electrode active material on the negative electrode side, and upon charging, lithium ions move from the positive electrode side to the negative electrode side and are deposited on the negative electrode current collector. This is a battery configured to deposit metallic lithium. In such a battery, if metallic lithium deposited during charging comes into contact with the electrolyte layer, the electrolyte layer may be damaged.
  • a negative electrode protective layer is sometimes provided in contact with the electrolyte layer.
  • the negative electrode protective layer itself may not function as an electrode, but since the layer formed directly on the electrolyte layer is the negative electrode protective layer, the negative electrode protective layer is the negative electrode structure in this embodiment. Corresponds to layer 4.
  • the positive electrode current collector 5 and the negative electrode current collector 6 are provided outside the positive electrode layer 3 and the negative electrode structure layer 4, respectively.
  • the positive electrode current collector 5 and the negative electrode current collector 6 are provided to electrically connect the all-solid-state battery 1 to the outside.
  • the outer shape (outline) of the negative electrode structure layer 4 when viewed along the stacking direction is aligned with that of the positive electrode layer 3. That is, the positive electrode layer 3 and the negative electrode structure layer 4 have the same shape when viewed along the stacking direction, and are arranged so that their outer peripheral edges coincide with each other.
  • the electrolyte region 7 expands so that its outer shape expands from the positive electrode layer 3 side toward the negative electrode structure layer 4 side. Specifically, the electrolyte region 7 expands from the positive electrode layer 3 side toward the negative electrode structure layer 4 side so that the end surface becomes tapered.
  • the end A of the electrolyte region 7 at the interface between the negative electrode structure layer 4 and the electrolyte region 7 is located inside the end of the negative electrode structure layer 4 when viewed along the stacking direction. positioned.
  • FIG. 2 is a schematic diagram showing an all-solid-state battery according to a reference example, and is a diagram showing the state during roll pressing.
  • the outer shape of the negative electrode is often made larger than the outer shape of the positive electrode when viewed along the stacking direction.
  • the porous sheet 2 usually has flexibility. Therefore, at the ends of the negative electrode structure layer 4, the load during roll pressing is intensively applied to the negative electrode structure layer 4, and cracks and chips are likely to occur.
  • the outer shape of the positive electrode layer 3 and the outer shape of the negative electrode structure layer 4 are the same. Therefore, during roll pressing, the load is less likely to be concentrated on the ends of the negative electrode structure layer 4, and cracking or chipping of the negative electrode structure layer 4 can be prevented.
  • the outer shape of the negative electrode structure layer 4 is aligned with the outer shape of the positive electrode layer 3, the end of the negative electrode and the end of the positive electrode will be aligned, and lithium will precipitate at the end of the negative electrode during charging. It becomes easier.
  • the electrolyte region 7 expands from the positive electrode layer 3 side toward the negative electrode structure layer 4 side so that its outer shape expands. Therefore, at the end, the amount of lithium ions conducted from the positive electrode side to the negative electrode side during charging is dispersed, and concentrated precipitation of lithium is prevented.
  • the end A of the electrolyte region 7 is located inside the end of the negative electrode structure layer 4 . Therefore, also from this point of view, lithium becomes difficult to precipitate at the end of the negative electrode.
  • the outer shape of the positive electrode layer 3 and the outer shape of the negative electrode structure layer 4 are “aligned” when viewed along the stacking direction.
  • aligned means that the outer shapes are “substantially” aligned with each other. That is, it is sufficient that the external shapes are aligned to such an extent that no cracks or chips occur in the negative electrode structure layer 4 during manufacturing.
  • the area of the positive electrode layer 3 is taken as 100%
  • the area of the negative electrode structure layer 4 is 90 to 100%
  • a region of 85% or more of the area of the positive electrode layer 3 is the negative electrode structure layer 4. If they overlap, it can be said that the external shapes are substantially the same.
  • the area of the negative electrode structure layer 4 is 95 to 100%, and 90% or more of the area of the positive electrode layer 3 overlaps with the negative electrode structure layer 4. ing. More preferably, when the area of the positive electrode layer 3 is taken as 100%, the area of the negative electrode structure layer 4 is 98 to 100%, and 95% or more of the area of the positive electrode layer 3 is covered by the negative electrode structure layer 4. overlapping. More preferably, 100% of the area of the positive electrode layer 3 overlaps with the negative electrode structure layer 4.
  • the end of the electrolyte region 7 at the interface between the positive electrode layer 3 and the electrolyte region 7 is defined as an end B, the end when viewed along the stacking direction.
  • the distance D between the portion A and the end portion B is at least three times the thickness t of the porous sheet 2 in the electrolyte region 7.
  • the number of units in the all-solid-state battery 1 may be plural.
  • the all-solid-state battery 1 may be provided as an assembled battery having a configuration in which a plurality of stacked units are electrically connected.
  • porous sheet The material constituting the porous sheet 2 is not particularly limited as long as it can support the solid electrolyte.
  • a porous material having communicating pores can support a solid electrolyte.
  • porous materials having communicating holes include nonwoven fabrics, porous separators, and sheets in which communicating holes are formed by lithography processing.
  • the nonwoven fabric for example, polyester nonwoven fabric, polyethylene nonwoven fabric, cellulose fiber nonwoven fabric, etc. can be used.
  • the thickness of the porous sheet 2 is not particularly limited.
  • the thickness of the porous sheet 2 is 5 to 100 ⁇ m, preferably 10 to 60 ⁇ m.
  • the method for supporting the solid electrolyte on the porous sheet 2 is also not particularly limited.
  • the solid electrolyte can be supported by preparing a slurry containing a solid electrolyte, applying the prepared slurry to the porous sheet 2, and drying it.
  • the method for producing the electrolyte region 7 having a tapered end surface is also not particularly limited. For example, while moving the nozzle on the porous sheet 2, slurry is supplied from the nozzle to the porous sheet 2. At this time, by moving the nozzle while changing the amount of slurry supplied in the region that is scheduled to become the end of the electrolyte region 7, the electrolyte region 7 having a tapered end surface can be obtained.
  • the content of the solid electrolyte in the electrolyte region 7 of the porous sheet 2 is not particularly limited, but is, for example, 25% by mass or more and 99% by mass or less.
  • the content of the solid electrolyte is 25% by mass or more, the electrolyte region 7 sufficiently functions as an electrolyte layer of a secondary battery.
  • the content of the solid electrolyte is 99% by mass or less, the flexibility of the porous sheet 2 is sufficiently maintained, and the porous sheet 2 is less likely to be damaged during roll pressing or the like.
  • the solid electrolyte supported in the electrolyte region 7 may be any solid electrolyte as long as it is solid and functions as an electrolyte.
  • a sulfide solid electrolyte, an oxide solid electrolyte, etc. can be used as the solid electrolyte.
  • the solid electrolyte is a sulfide solid electrolyte.
  • the sulfide solid electrolyte include LPS-based (eg, argyrodite (Li 6 PS 5 Cl)) and LGPS-based (eg, Li 10 GeP 2 S 12 ) materials.
  • the positive electrode layer 3 may be formed of a material that can release lithium ions during charging and occlude lithium ions during discharging.
  • the positive electrode layer 3 is formed of, for example, a material containing a resin binder and a positive electrode active material dispersed in the resin binder.
  • the positive electrode active material for example, lithium metal composite oxide or the like can be used.
  • lithium metal composite oxides include layered rock salt type compounds such as LiCoO 2 , LiMnO 2 , LiNiO 2 , LiVO 2 , and Li(Ni-Mn-Co)O 2 , LiMn 2 O 4 , and LiNi 0.5
  • lithium metal composite oxides include layered rock salt type compounds such as LiCoO 2 , LiMnO 2 , LiNiO 2 , LiVO 2 , and Li(Ni-Mn-Co)O 2 , LiMn 2 O 4 , and LiNi 0.5
  • spinel-type compounds such as Mn 1.5 O 4
  • olivine-type compounds such as LiFePO 4 and LiMnPO 4
  • Si-containing compounds such as Li 2 FeSiO 4 and Li 2 MnSiO 4 .
  • Li 4 Ti 5 O 12 or the like can also be used.
  • the thickness of the positive electrode layer 3 is not particularly limited, but is, for example, 10 to 500 ⁇ m, preferably 50 to 200 ⁇ m.
  • the negative electrode structure layer 4 may be a negative electrode layer, a negative electrode protective layer, or the like.
  • the thickness of the negative electrode structure layer 4 is, for example, 1 to 100 ⁇ m, preferably 5 to 80 ⁇ m.
  • the negative electrode layer may be any layer that is configured to occlude lithium (or deposit lithium) during charging and release lithium ions during discharging.
  • the negative electrode layer can be formed from a material containing a resin binder and a negative electrode active material dispersed in the resin binder.
  • the negative electrode active material for example, lithium metal, silicon material (silicon), tin material, compounds containing silicon or tin (oxides, nitrides, alloys with other metals), and carbon materials (graphite, etc.) are used. be able to.
  • the negative electrode protective layer may be any layer that can protect the electrolyte region 7 from lithium metal deposited on the negative electrode side.
  • the negative electrode protective layer a layer containing one or more materials selected from the group consisting of carbon materials such as graphite and metal materials such as silver can be used.
  • a layer containing one or more materials selected from the group consisting of carbon materials such as graphite and metal materials such as silver can be used.
  • such a material may also function as an electrode that inserts and releases lithium ions.
  • lithium halides lithium fluoride (LiF), lithium chloride (LiCl), lithium bromide (LiBr), lithium iodide (LiI)), lithium ion conductive polymer, Li-M-O (M is one or more metal elements selected from the group consisting of Mg, Au, Al, Sn, and Zn); and Li-Ba-TiO 3 composite oxide. At least one selected from the group consisting of: All of these materials are particularly stable with respect to reductive decomposition upon contact with lithium metal, and therefore are preferable from the viewpoint of protecting the electrolyte layer.
  • the negative electrode protective layer may have a structure in which these materials are dispersed in a resin binder.
  • the thickness of the negative electrode protective layer is, for example, 1 to 100 ⁇ m, preferably 5 to 80 ⁇ m.
  • the positive electrode current collector 5 and the negative electrode current collector 6 are provided to electrically connect the all-solid-state battery 1 to an external device.
  • the positive electrode current collector 5 and the negative electrode current collector 6 are each formed of a conductive thin film.
  • the method for manufacturing the all-solid-state battery 1 according to this embodiment is not particularly limited.
  • the all-solid-state battery 1 can be manufactured using a method as described below.
  • a slurry containing a positive electrode active material is prepared. Then, the prepared slurry is applied onto the positive electrode current collector 5 and dried. Thereby, a positive electrode current collector 5 on which a positive electrode layer 3 is formed is obtained.
  • a slurry containing a solid electrolyte is partially applied to a porous sheet having communicating holes and dried. Thereby, a porous sheet 2 having an electrolyte region 7 and a non-supporting region 8 is obtained.
  • a slurry of the material constituting the negative electrode structure layer 4 is prepared, and the prepared slurry is applied onto the negative electrode current collector 6. After application, let dry. As a result, a negative electrode current collector 6 on which a negative electrode structure layer 4 is formed is obtained.
  • the positive electrode current collector 5 on which the positive electrode layer 3 is formed, the porous sheet 2 on which the electrolyte region 7 is formed, and the negative electrode current collector 6 on which the negative electrode structure layer 4 is formed are arranged to overlap. Then, pressure is applied using a roll press to obtain a laminate. At this time, as described above, in this embodiment, the outer shape of the positive electrode layer 3 and the outer shape of the negative electrode structure layer 4 are aligned, so that cracking or chipping of the negative electrode structure layer 4 is prevented.
  • a plurality of the above-mentioned laminates are stacked as necessary. Furthermore, a positive electrode tab and a negative electrode tab are connected to the positive electrode current collector 5 and the negative electrode current collector 6, respectively. Furthermore, the laminate is housed in a laminate film made of aluminum or the like, and vacuum sealed. As a result, an all-solid-state battery 1 is obtained.
  • the all-solid-state battery 1 includes a porous sheet 2 having an electrolyte region 7 supporting a solid electrolyte, and a porous sheet 2 laminated on one surface of the porous sheet 2 so as to be in contact with the porous sheet 2. It has a positive electrode layer 3 and a negative electrode structure layer 4 laminated on the other surface of the porous sheet 2 so as to be in contact with the porous sheet 2.
  • the outer shape of the positive electrode layer 3 and the outer shape of the negative electrode structure layer 4 are the same when viewed along the stacking direction.
  • the electrolyte region 7 expands from the positive electrode layer 3 side toward the negative electrode structure layer 4 side so that its outer shape expands.
  • An end A of the electrolyte region 7 at the interface between the negative electrode structure layer 4 and the electrolyte region 7 is located inside the end of the negative electrode structure layer 4 when viewed along the stacking direction. According to such a configuration, since the outer shape of the positive electrode layer 3 and the outer shape of the negative electrode structure layer 4 are aligned, damage to the negative electrode structure layer 4 during pressurization such as roll pressing is prevented. Furthermore, since the electrolyte region 7 has a shape that expands from the positive electrode layer 3 side toward the negative electrode structure layer 4 side, the amount of lithium ion conduction at the negative end portion is dispersed, and excessive lithium at the end portion is dispersed. Precipitation is prevented. Furthermore, since the end of the electrolyte region 7 on the negative electrode side (end A) is located inside the end of the negative electrode structure layer 4, lithium is prevented from being deposited on the end surface of the negative electrode.
  • the content of the solid electrolyte in the electrolyte region 7 is 25% by mass or more and 99% by mass or less. According to such a configuration, the electrolyte region 7 can sufficiently function as an electrolyte of the secondary battery. Moreover, the flexibility of the porous sheet 2 is also maintained.
  • the distance between the end A and the end B when viewed along the stacking direction is defined as an end B
  • the distance D is three times or more the thickness t of the porous sheet in the electrolyte region 7.
  • FIG. 3 is a schematic cross-sectional view showing the all-solid-state battery 1 according to the present embodiment.
  • the structure of the non-supporting region 8 in the porous sheet 2 is devised.
  • the non-carrying area 8 is provided with a communicating area 12 and a non-communicating area 11.
  • the non-communicating region 11 is a region where both sides of the porous sheet 2 in the thickness direction are not communicating with each other.
  • the non-communicating region 11 is provided at a position surrounding the electrolyte region 7 and is continuous with the electrolyte region 7 .
  • the non-communicating region 11 can be formed, for example, by blocking the communicating holes in the porous sheet 2 having communicating holes. For example, by arranging a covering material on the upper surface and/or lower surface of the porous sheet 2, the communicating holes can be closed and the non-communicating region 11 can be formed.
  • a covering material tape materials such as polyimide films, coating agents, inorganic particle materials, etc. can be used.
  • the communicating holes can be closed by heating a portion of the porous sheet 2 to melt it.
  • the communicating holes of the porous sheet 2 can be filled with a resin material or the like to close the communicating holes.
  • the communication region 12 is a region where both sides of the porous sheet 2 in the thickness direction are in communication.
  • the communication region 12 may or may not exist.
  • the entire non-carrying region 8 may be the non-communicating region 11 .
  • FIG. 4 is a schematic cross-sectional view showing the all-solid-state battery 1 according to this embodiment.
  • the shape of the end face of the electrolyte region 7 is changed from the previously described embodiments. Specifically, the electrolyte region 7 expands from the positive electrode layer 3 side toward the negative electrode structure layer 4 side so that the end surface has a step-like shape.
  • the electrolyte region 7 having a stepped end face can be obtained, for example, by the method described below. First, a plurality of porous sheet elements are prepared. A layer of solid electrolyte is then disposed on each porous sheet element. In this case, layers of solid electrolyte of different sizes are arranged on different porous sheet elements. Then, these are stacked in order of the size of the solid electrolyte layer. The obtained laminate is integrated by pressing or the like. As a result, the solid electrolyte enters each porous sheet element, and it is possible to obtain a porous sheet 2 provided with an electrolyte region 7 having a step-like end surface as a whole.

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  • Manufacturing & Machinery (AREA)
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Abstract

La présente invention concerne une batterie entièrement solide comprenant : une feuille poreuse avec une région d'électrolyte ; et une couche de structure d'électrode négative et une couche d'électrode positive empilées de manière à être en contact avec la feuille poreuse. Les contours de la couche d'électrode positive et de la couche de structure d'électrode négative sont alignés. La région d'électrolyte s'élargit depuis le côté de couche d'électrode positive vers le côté de couche de structure d'électrode négative. Au niveau de l'interface entre la couche de structure d'électrode négative et la région d'électrolyte, les bords de la région d'électrolyte sont situés plus loin vers l'intérieur que les bords de la couche de structure d'électrode négative.
PCT/IB2023/000405 2022-07-13 2023-07-06 Batterie entièrement solide WO2024013560A1 (fr)

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JP2022112193 2022-07-13
JP2022-112193 2022-07-13

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015069775A (ja) * 2013-09-27 2015-04-13 株式会社村田製作所 全固体電池およびその製造方法
JP2015153460A (ja) * 2014-02-10 2015-08-24 古河機械金属株式会社 固体電解質シート、全固体型リチウムイオン電池、および固体電解質シートの製造方法
JP2017183120A (ja) * 2016-03-31 2017-10-05 日立造船株式会社 全固体二次電池およびその製造方法
JP2021533542A (ja) * 2018-12-21 2021-12-02 エルジー・ケム・リミテッド 固体電解質膜、その製造方法及びそれを含む全固体電池
JP2021534564A (ja) * 2019-05-03 2021-12-09 エルジー・ケム・リミテッド 固体電解質膜、その製造方法及びそれを含む全固体電池

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015069775A (ja) * 2013-09-27 2015-04-13 株式会社村田製作所 全固体電池およびその製造方法
JP2015153460A (ja) * 2014-02-10 2015-08-24 古河機械金属株式会社 固体電解質シート、全固体型リチウムイオン電池、および固体電解質シートの製造方法
JP2017183120A (ja) * 2016-03-31 2017-10-05 日立造船株式会社 全固体二次電池およびその製造方法
JP2021533542A (ja) * 2018-12-21 2021-12-02 エルジー・ケム・リミテッド 固体電解質膜、その製造方法及びそれを含む全固体電池
JP2021534564A (ja) * 2019-05-03 2021-12-09 エルジー・ケム・リミテッド 固体電解質膜、その製造方法及びそれを含む全固体電池

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