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WO2024142885A1 - Procédé de fabrication de matériau actif d'électrode positive pour batterie secondaire - Google Patents

Procédé de fabrication de matériau actif d'électrode positive pour batterie secondaire Download PDF

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Publication number
WO2024142885A1
WO2024142885A1 PCT/JP2023/044250 JP2023044250W WO2024142885A1 WO 2024142885 A1 WO2024142885 A1 WO 2024142885A1 JP 2023044250 W JP2023044250 W JP 2023044250W WO 2024142885 A1 WO2024142885 A1 WO 2024142885A1
Authority
WO
WIPO (PCT)
Prior art keywords
sulfonic acid
cake
acid compound
positive electrode
transition metal
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/JP2023/044250
Other languages
English (en)
Japanese (ja)
Inventor
悠平 桑名
かおる 長田
毅 小笠原
勝哉 井之上
晃宏 河北
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Energy Co Ltd
Original Assignee
Panasonic Energy Co Ltd
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 Panasonic Energy Co Ltd filed Critical Panasonic Energy Co Ltd
Priority to CN202380088434.9A priority Critical patent/CN120390993A/zh
Priority to JP2024567415A priority patent/JPWO2024142885A1/ja
Publication of WO2024142885A1 publication Critical patent/WO2024142885A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G53/00—Compounds of nickel
    • 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
    • H01M4/48—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
    • H01M4/52—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron
    • H01M4/525—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy
    • 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

  • This disclosure relates to a method for producing a positive electrode active material for a secondary battery.
  • the lithium transition metal oxide used as the positive electrode active material for secondary batteries preferably contains Ni, for example, from the viewpoint of increasing the capacity of the battery.
  • Ni-containing lithium transition metal oxide is used as the positive electrode active material for secondary batteries, the reaction resistance of the positive electrode increases, and the direct current resistance of the battery may increase.
  • a positive electrode active material for secondary batteries in which a sulfonic acid compound is attached to the particle surface of lithium transition metal oxide is known, but its manufacturing method has not been established. Therefore, even if a positive electrode active material in which a sulfonic acid compound is attached to the particle surface of lithium transition metal oxide is used, the discharge capacity and charge/discharge efficiency of the battery may decrease. This is thought to be caused by the fact that when manufacturing a positive electrode active material in which a sulfonic acid compound is attached to the particle surface of lithium transition metal oxide, the sulfonic acid compound cannot be dispersed and attached to the entire lithium transition metal oxide, and the sulfonic acid compound is unevenly distributed in a part of the lithium transition metal oxide.
  • the present disclosure therefore aims to provide a method for producing a positive electrode active material for a secondary battery in which a sulfonic acid compound is attached to the particle surface of a lithium transition metal oxide, which produces a positive electrode active material for a secondary battery that can suppress the decrease in the discharge capacity and charge/discharge efficiency of the battery.
  • a positive electrode active material for a secondary battery can be obtained that can suppress the decrease in the discharge capacity and charge/discharge efficiency of the battery.
  • the method for producing a positive electrode active material for a secondary battery according to this embodiment includes a washing step of mixing a Ni-containing lithium transition metal oxide with water or an aqueous solution to obtain a slurry, stirring the slurry to wash the Ni-containing lithium transition metal oxide with water, a solid-liquid separation step of performing solid-liquid separation of the slurry to obtain a cake containing the Ni-containing lithium transition metal oxide, an addition step of adding a solution containing a sulfonic acid compound to the cake, a mixing step of mixing the cake with the solution containing the sulfonic acid compound, and a drying step of drying the mixture containing the cake and the solution containing the sulfonic acid compound.
  • a washing step of mixing a Ni-containing lithium transition metal oxide with water or an aqueous solution to obtain a slurry stirring the slurry to wash the Ni-containing lithium transition metal oxide with water
  • a solid-liquid separation step of performing solid-liquid separation of the slurry to obtain a cake containing the
  • the water-washing step is a step of mixing the Ni-containing lithium transition metal oxide with water or an aqueous solution to obtain a slurry, and stirring the slurry to wash the Ni-containing lithium transition metal oxide with water.
  • lithium compounds e.g., lithium carbonate, etc.
  • water washing step it is possible to remove the unreacted lithium compounds remaining on the particle surface of the Ni-containing lithium transition metal oxide. This increases the number of pores on the particle surface of the Ni-containing lithium transition metal oxide and the surface area of the particles, which promotes the attachment of the sulfonic acid compound to the particle surface of the Ni-containing lithium transition metal oxide in the subsequent addition step of adding a solution containing a sulfonic acid compound.
  • the moisture content of the cake obtained by solid-liquid separation is preferably 3% by mass or more and 10% by mass or less.
  • the cake is usually transported to the next process by belt conveyor, but if the moisture content of the cake exceeds 10% by mass, the cake may adhere to the belt conveyor, reducing transportability by belt conveyor.
  • the electrolyte has, for example, ion conductivity (for example, lithium ion conductivity).
  • the electrolyte may be a liquid electrolyte (electrolytic solution) or a solid electrolyte.
  • Example 1 A Ni-containing lithium transition metal oxide ( LiNi0.9Co0.05Al0.05O2 ) was obtained by mixing an oxide mainly composed of Ni with lithium hydroxide and then calcining the mixture. 1,000 kg of the resulting Ni-containing lithium transition metal oxide was mixed with 1,000 L of pure water to form a slurry, which was stirred and subjected to a water washing process for 30 minutes.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Battery Electrode And Active Subsutance (AREA)

Abstract

Procédé de fabrication d'un matériau actif d'électrode positive pour une batterie secondaire qui, selon la présente invention, est caractérisé en ce qu'il comprend une étape de lavage consistant à agiter une suspension qui est obtenue par mélange d'un oxyde de métal de transition de lithium contenant du Ni et d'eau ou d'une solution aqueuse, une étape de séparation solide-liquide consistant à séparer la suspension en composants solides et liquides pour produire un gâteau qui comprend l'oxyde de métal de transition de lithium contenant du Ni, une étape d'ajout consistant à ajouter une solution qui contient un composé d'acide sulfonique au gâteau, une étape de mélange consistant à mélanger le gâteau et la solution qui contient le composé d'acide sulfonique, et une étape de séchage consistant à sécher le mélange contenant le gâteau et la solution qui contient le composé d'acide sulfonique, la teneur en eau du gâteau qui est obtenu à l'étape de séparation solide-liquide étant d'au moins 3 % en masse, et le composé d'acide sulfonique étant exprimé par la formule générale [I] (où : A représente H, Li ou Na ; et R représente H ou un groupe hydrocarboné).
PCT/JP2023/044250 2022-12-28 2023-12-11 Procédé de fabrication de matériau actif d'électrode positive pour batterie secondaire Ceased WO2024142885A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN202380088434.9A CN120390993A (zh) 2022-12-28 2023-12-11 二次电池用正极活性物质的制造方法
JP2024567415A JPWO2024142885A1 (fr) 2022-12-28 2023-12-11

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2022-211603 2022-12-28
JP2022211603 2022-12-28

Publications (1)

Publication Number Publication Date
WO2024142885A1 true WO2024142885A1 (fr) 2024-07-04

Family

ID=91717560

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2023/044250 Ceased WO2024142885A1 (fr) 2022-12-28 2023-12-11 Procédé de fabrication de matériau actif d'électrode positive pour batterie secondaire

Country Status (3)

Country Link
JP (1) JPWO2024142885A1 (fr)
CN (1) CN120390993A (fr)
WO (1) WO2024142885A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11139830A (ja) * 1997-11-10 1999-05-25 Nippon Telegr & Teleph Corp <Ntt> ニッケル酸化物の製造方法、及びその方法により製造したニッケル酸化物を用いる電池
JP2011124086A (ja) * 2009-12-10 2011-06-23 Nippon Chem Ind Co Ltd リチウム二次電池用正極活物質、その製造方法及びリチウム二次電池
WO2018003439A1 (fr) * 2016-06-30 2018-01-04 パナソニックＩｐマネジメント株式会社 Matériau actif d'électrode positive et batterie rechargeable à électrolyte non aqueux

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11139830A (ja) * 1997-11-10 1999-05-25 Nippon Telegr & Teleph Corp <Ntt> ニッケル酸化物の製造方法、及びその方法により製造したニッケル酸化物を用いる電池
JP2011124086A (ja) * 2009-12-10 2011-06-23 Nippon Chem Ind Co Ltd リチウム二次電池用正極活物質、その製造方法及びリチウム二次電池
WO2018003439A1 (fr) * 2016-06-30 2018-01-04 パナソニックＩｐマネジメント株式会社 Matériau actif d'électrode positive et batterie rechargeable à électrolyte non aqueux

Also Published As

Publication number Publication date
JPWO2024142885A1 (fr) 2024-07-04
CN120390993A (zh) 2025-07-29

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