WO2022007402A1 - Poudre contenant du silicium pour matériau d'électrode négative de batterie au lithium-ion et son procédé de préparation - Google Patents

Poudre contenant du silicium pour matériau d'électrode négative de batterie au lithium-ion et son procédé de préparation Download PDF

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Publication number
WO2022007402A1
WO2022007402A1 PCT/CN2021/075669 CN2021075669W WO2022007402A1 WO 2022007402 A1 WO2022007402 A1 WO 2022007402A1 CN 2021075669 W CN2021075669 W CN 2021075669W WO 2022007402 A1 WO2022007402 A1 WO 2022007402A1
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WO
WIPO (PCT)
Prior art keywords
silicon
containing powder
negative electrode
powder
lithium ion
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Application number
PCT/CN2021/075669
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English (en)
Chinese (zh)
Inventor
胡亮
张少波
方伟
曹德福
夏永生
Original Assignee
马鞍山科达普锐能源科技有限公司
安徽科达铂锐能源科技有限公司
安徽科达新材料有限公司
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Application filed by 马鞍山科达普锐能源科技有限公司, 安徽科达铂锐能源科技有限公司, 安徽科达新材料有限公司 filed Critical 马鞍山科达普锐能源科技有限公司
Publication of WO2022007402A1 publication Critical patent/WO2022007402A1/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
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/36—Selection of substances as active materials, active masses, active liquids
    • H01M4/362—Composites
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B82—NANOTECHNOLOGY
    • B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
    • B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B82—NANOTECHNOLOGY
    • B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
    • B82Y40/00—Manufacture or treatment of nanostructures
    • 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
    • H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
    • 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
    • H01M4/38—Selection of substances as active materials, active masses, active liquids of elements or alloys
    • H01M4/386—Silicon or alloys based on silicon
    • 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
    • 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
    • H01M4/624—Electric conductive fillers
    • H01M4/625—Carbon or graphite
    • 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
    • H01M4/628—Inhibitors, e.g. gassing inhibitors, corrosion inhibitors
    • 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

Abstract

La présente invention concerne le domaine technique des batteries au lithium-ion, et concerne spécifiquement une poudre contenant du silicium pour un matériau d'électrode négative de batterie au lithium-ion et un procédé de préparation associé. La poudre contenant du silicium contient de 50 à 90 % en poids de silicium, de 5 à 30 % en poids d'oxygène et de 5 à 20 % en poids de zirconium. La taille moyenne des particules D50 de la poudre contenant du silicium est inférieure ou égale à 110 nm. La poudre contenant du silicium est analysée au moyen de motifs de diffraction des rayons X en fonction de la largeur de demi-pic des pics de diffraction attribués à Si (111) proche de 2θ = 28,4°, et la taille de grain du silicium calculée par la formule de Scherrer est inférieure à 12 nm. Par rapport à la technologie existante, la poudre contenant du silicium préparée par la présente invention peut fournir une capacité spécifique élevée et une excellente performance cyclique lorsqu'elle est utilisée dans un matériau d'électrode négative.
PCT/CN2021/075669 2020-07-06 2021-02-06 Poudre contenant du silicium pour matériau d'électrode négative de batterie au lithium-ion et son procédé de préparation WO2022007402A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202010639814.5 2020-07-06
CN202010639814.5A CN111755679A (zh) 2020-07-06 2020-07-06 一种锂离子电池负极材料用含硅粉末及其制备方法

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WO2022007402A1 true WO2022007402A1 (fr) 2022-01-13

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WO (1) WO2022007402A1 (fr)

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CN111755679A (zh) * 2020-07-06 2020-10-09 马鞍山科达普锐能源科技有限公司 一种锂离子电池负极材料用含硅粉末及其制备方法

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CN111755681A (zh) * 2020-07-06 2020-10-09 马鞍山科达普锐能源科技有限公司 一种锂离子电池用硅碳负极材料及其制备方法
CN111755679A (zh) * 2020-07-06 2020-10-09 马鞍山科达普锐能源科技有限公司 一种锂离子电池负极材料用含硅粉末及其制备方法

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