CN115298854A - 负极材料、负极极片、电化学装置和电子装置 - Google Patents

负极材料、负极极片、电化学装置和电子装置 Download PDF

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Publication number
CN115298854A
CN115298854A CN202080098582.5A CN202080098582A CN115298854A CN 115298854 A CN115298854 A CN 115298854A CN 202080098582 A CN202080098582 A CN 202080098582A CN 115298854 A CN115298854 A CN 115298854A
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silicon
negative electrode
based material
test
capacity
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Pending
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CN202080098582.5A
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English (en)
Inventor
王超
廖群超
崔航
谢远森
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Ningde Amperex Technology Ltd
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Ningde Amperex Technology Ltd
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Publication of CN115298854A publication Critical patent/CN115298854A/zh
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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
    • H01M4/48—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
    • H01M4/485—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of mixed oxides or hydroxides for inserting or intercalating light metals, e.g. LiTi2O4 or LiTi2OxFy
    • 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
    • H01M2004/021—Physical characteristics, e.g. porosity, surface area
    • 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
    • H01M2004/026—Electrodes composed of, or comprising, active material characterised by the polarity
    • H01M2004/027—Negative electrodes
    • 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

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

Abstract

本公开提供了负极材料、负极极片、电化学装置和电子装置。负极材料包括硅基材料，其中，对含有负极材料的电极与由金属锂构成的对电极组合而成的试验电池，试验电池的首次效率为81％～86％，并且其中，试验电池中的电极的电势成为0.17V时的放电容量在试验电池的首次放电容量的35％～65％的范围内。本公开通过限定硅基材料颗粒的嵌锂平台，使得硅基负极材料在试验半电池中电势成为0.17V时的嵌锂容量在试验半电池首次嵌锂容量的35％～65％的范围内，从而保证硅基材料的非晶特性，显著改善负极材料的循环性能，并且降低电极组件在循环过程中的膨胀率。

Description

PCT国内申请，说明书已公开。

Claims (10)

  1. PCT国内申请，权利要求书已公开。
CN202080098582.5A 2020-03-25 2020-03-25 负极材料、负极极片、电化学装置和电子装置 Pending CN115298854A (zh)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2020/081047 WO2021189284A1 (zh) 2020-03-25 2020-03-25 负极材料、负极极片、电化学装置和电子装置

Publications (1)

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CN115298854A true CN115298854A (zh) 2022-11-04

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CN202080098582.5A Pending CN115298854A (zh) 2020-03-25 2020-03-25 负极材料、负极极片、电化学装置和电子装置

Country Status (4)

Country Link
US (1) US20230034212A1 (zh)
EP (1) EP4131493A1 (zh)
CN (1) CN115298854A (zh)
WO (1) WO2021189284A1 (zh)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104852019A (zh) * 2014-02-14 2015-08-19 北京有色金属研究总院 一种锂离子电池用硅金属复合负极材料及其制备方法
KR101586816B1 (ko) * 2015-06-15 2016-01-20 대주전자재료 주식회사 비수전해질 이차전지용 음극재, 이의 제조방법, 및 이를 포함하는 비수전해질 이차전지

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US20230034212A1 (en) 2023-02-02
WO2021189284A1 (zh) 2021-09-30
EP4131493A1 (en) 2023-02-08

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