WO2022101002A2 - Procédé de production d'une électrode pour une batterie à ions métalliques alcalins aqueux ou une batterie à ions hybrides aqueux - Google Patents

Procédé de production d'une électrode pour une batterie à ions métalliques alcalins aqueux ou une batterie à ions hybrides aqueux Download PDF

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Publication number
WO2022101002A2
WO2022101002A2 PCT/EP2021/079667 EP2021079667W WO2022101002A2 WO 2022101002 A2 WO2022101002 A2 WO 2022101002A2 EP 2021079667 W EP2021079667 W EP 2021079667W WO 2022101002 A2 WO2022101002 A2 WO 2022101002A2
Authority
WO
WIPO (PCT)
Prior art keywords
carbon
layer
ion battery
carrier film
paste
Prior art date
Application number
PCT/EP2021/079667
Other languages
German (de)
English (en)
Other versions
WO2022101002A3 (fr
Inventor
Thomas DR. KRAUSSE
Original Assignee
BlueSky Energy Entwicklungs- und ProduktionsGmbH
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 BlueSky Energy Entwicklungs- und ProduktionsGmbH filed Critical BlueSky Energy Entwicklungs- und ProduktionsGmbH
Priority to EP21801858.8A priority Critical patent/EP4244913A2/fr
Publication of WO2022101002A2 publication Critical patent/WO2022101002A2/fr
Publication of WO2022101002A3 publication Critical patent/WO2022101002A3/fr

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Classifications

    • 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
    • H01M4/04—Processes of manufacture in general
    • 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
    • H01M4/36—Selection of substances as active materials, active masses, active liquids
    • H01M4/58—Selection of substances as active materials, active masses, active liquids of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy; of polyanionic structures, e.g. phosphates, silicates or borates
    • H01M4/583—Carbonaceous material, e.g. graphite-intercalation compounds or CFx
    • 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
    • H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
    • 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 invention relates to a method for producing an electrode according to the preamble of claim 1.
  • a battery with an aqueous alkaline electrolyte is described in EP 2 826083 B1, for example. Electrodes are described there that are assembled from a stack of separate, plate-shaped parts.
  • This structure is complex and difficult to produce, particularly with regard to the contact between the individual parts.
  • this object is achieved by its characterizing features.
  • a method according to the invention is characterized in that a carbon-containing paste is applied to a conductive carrier film and this layered structure is then heated and pressed.
  • this measure enables a manufacturing process for a layered structure that is mounted as a unit in the battery, which simplifies the structure of the battery and thus its manufacture.
  • a metal foil can be used as the carrier foil, as in the case of collectors for batteries according to the prior art, with this foil now being able to be made thinner since it no longer has to be handled as a separate part.
  • Heating and pressing can be carried out simultaneously or sequentially.
  • Temporal overlapping in which the two method steps are only carried out at the same time from time to time, is also conceivable.
  • a porous surface and/or a porous carbon layer is formed on the side opposite the carrier film. This significantly increases the contact surface of the electrode, which is soaked in the battery with the aqueous electrolyte, which improves the storage, ie the so-called intercalation, of charge carriers such as alkali ions from the electrolyte and the capacity of the battery can be increased.
  • a carbon powder can be applied and bonded to the layer created by the carbonaceous paste. Depending on the amount of carbon powder, only the surface is made porous by this process step or a porous layer is applied with a certain layer thickness.
  • connection of the porous carbon powder can be carried out, for example, by sprinkling the carbon powder on the layer formed by heating and pressing the carbonaceous paste and heating and/or pressing again.
  • the carbon powder is applied to the carrier film after or when the carbon-containing paste is applied to this paste and is heated and pressed together with it.
  • connection to the carrier film and the formation of the porous surface and/or the porous carbon layer are carried out in one operation.
  • a further advantageous embodiment of the invention results from the fact that one or more of the above-mentioned method steps for constructing an electrode are carried out on both sides of the carrier film. This can cause a battery to build up
  • Contacting the carrier film serving as a collector can easily be used to connect two opposite battery cells in parallel. It has proven successful in experiments to use a temperature greater than 50 degrees Celsius during heating and/or a pressure greater than 1 kg/cm 2 during compression.
  • pastes made of carbon black or graphite or activated carbon can be used as the carbon-containing paste.
  • the connection to the carrier film can be improved if the paste contains one or more solvents.
  • the paste can thus be given a viscosity that is easy to process, with the solvent(s) then evaporating during heating and/or pressing.
  • the layer structure and the connection to the carrier film can be improved by using a carbon-containing paste with or without a solvent, which paste contains one or more polymers.
  • the polymer or polymers can form a bond with the carbon and thereby mechanically stabilize the layer.
  • Polymers can also produce improved adhesion to the carrier film.
  • the contact can thus be mechanically stable on a smooth contact surface. This also improves the electrical contact and thus further reduces the internal resistance. In particular, when using one or more electrically conductive polymers, the electrical contact is further improved.
  • the production of the electrodes according to the invention can be carried out with a carrier film strip running continuously through the various work stations, with the individual electrodes then being isolated, in particular punched or cut.
  • a wound electrode can be manufactured by winding the layered structure according to the claims. This structure is advantageous, for example, when using a cup-shaped counter electrode filled with electrolyte.
  • FIG. 1 shows a block diagram for the process sequence of a first exemplary embodiment
  • Fig. 2 is a block diagram for the process flow of a second embodiment
  • FIG. 3 shows a schematic illustration of a continuous process flow.
  • the method according to Figure 1 comprises three steps, i.e. that
  • Carrier film in particular made of metal, the sprinkling 2 of a
  • connection 3 takes place in two successive method steps, i.e. the heating 3a and the subsequent pressing 3b.
  • the schematic sequence according to FIG. 3 comprises the unrolling of a carrier film 4 with the subsequent application of a carbon-containing paste 5 from a slotted nozzle 6. Subsequently, a carbon powder 8 is scattered via a scattering nozzle 9, which is also in the form of a slot.
  • This layer structure is heated in a continuous furnace 9, then pressed over a press roller 10 and finally fed to a stamping die 11 for separating individual electrodes.
  • electrodes can of course also be individually layered, heated and pressed in the same sequence of process steps.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Inorganic Chemistry (AREA)
  • Battery Electrode And Active Subsutance (AREA)

Abstract

L'invention concerne un procédé de production d'une électrode pour une batterie à ions métalliques alcalins aqueux ou une batterie à ions hybrides aqueux. La production d'une électrode est caractérisée en ce qu'une pâte contenant du carbone (5) est appliquée sur une feuille de support conductrice (4), et cette construction de couches est ensuite liée par chauffage et compression.
PCT/EP2021/079667 2020-11-12 2021-10-26 Procédé de production d'une électrode pour une batterie à ions métalliques alcalins aqueux ou une batterie à ions hybrides aqueux WO2022101002A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP21801858.8A EP4244913A2 (fr) 2020-11-12 2021-10-26 Procédé de production d'une électrode pour une batterie à ions métalliques alcalins aqueux ou une batterie à ions hybrides aqueux

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102020129924.9 2020-11-12
DE102020129924.9A DE102020129924A1 (de) 2020-11-12 2020-11-12 Verfahren zur Herstellung einer Elektrode für eine wässrige Alkali-Ionen Batterie oder eine wässrige Hybrid-Ionen Batterie

Publications (2)

Publication Number Publication Date
WO2022101002A2 true WO2022101002A2 (fr) 2022-05-19
WO2022101002A3 WO2022101002A3 (fr) 2022-12-22

Family

ID=78500606

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2021/079667 WO2022101002A2 (fr) 2020-11-12 2021-10-26 Procédé de production d'une électrode pour une batterie à ions métalliques alcalins aqueux ou une batterie à ions hybrides aqueux

Country Status (3)

Country Link
EP (1) EP4244913A2 (fr)
DE (1) DE102020129924A1 (fr)
WO (1) WO2022101002A2 (fr)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2826083B1 (fr) 2012-03-15 2017-07-12 Aquion Energy Inc. Module et logement de dispositif de stockage d'énergie électrochimique grand format

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010097830A (ja) * 2008-10-16 2010-04-30 Nippon Zeon Co Ltd 電気化学素子用電極の製造方法
EP3654424A4 (fr) * 2017-07-12 2021-04-14 Zeon Corporation Procédé de production d'un élément destiné à des éléments électrochimiques, et stratifié destiné à des éléments électrochimiques
CN111342053A (zh) * 2020-03-02 2020-06-26 太仓中科赛诺新能源科技有限公司 一种柔性一体化电极片及其制备方法与应用

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2826083B1 (fr) 2012-03-15 2017-07-12 Aquion Energy Inc. Module et logement de dispositif de stockage d'énergie électrochimique grand format

Also Published As

Publication number Publication date
DE102020129924A1 (de) 2022-05-12
WO2022101002A3 (fr) 2022-12-22
EP4244913A2 (fr) 2023-09-20

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