CN114041226A - 电化学装置及包含其的电子装置 - Google Patents

电化学装置及包含其的电子装置 Download PDF

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CN114041226A
CN114041226A CN202080047061.7A CN202080047061A CN114041226A CN 114041226 A CN114041226 A CN 114041226A CN 202080047061 A CN202080047061 A CN 202080047061A CN 114041226 A CN114041226 A CN 114041226A
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positive electrode
particles
active material
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CN114041226B (zh
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岳影影
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Ningde Amperex Technology Ltd
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Ningde Amperex Technology Ltd
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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
    • H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
    • H01M4/131—Electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx
    • 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
    • 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
    • H01M4/48—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
    • H01M4/50—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese
    • H01M4/505—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy
    • 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
    • H01M2004/028—Positive electrodes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
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    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/04—Processes of manufacture in general
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    • H01M4/0404—Methods of deposition of the material by coating on electrode collectors
    • 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
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    • H01M4/36—Selection of substances as active materials, active masses, active liquids
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    • 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)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
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  • Battery Electrode And Active Subsutance (AREA)
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Abstract

本申请涉及电化学装置及包含其的电子装置。所述电化学装置包含正极，所述正极包含正极集流体和正极活性材料层，所述正极活性材料层包含颗粒A和颗粒B，所述颗粒A的圆形度为RA，截面积为SA；所述颗粒B的圆形度为RB，截面积为SB，其中RB＜0.4≤RA，SB＜20μm2≤SA，其中以所述正极活性材料层垂直于所述正极集流体方向的截面的总面积计，所述颗粒A的总面积占比与所述颗粒B的总面积占比的比值为1:9至8:2。本申请所述的电化学装置能够呈现出优异的电化学性能，尤其是能够降低产气并改善电化学装置的循环稳定性。

Description

PCT国内申请，说明书已公开。

Claims (11)

  1. PCT国内申请，权利要求书已公开。
CN202080047061.7A 2020-03-27 2020-03-27 电化学装置及包含其的电子装置 Active CN114041226B (zh)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023169210A1 (zh) * 2022-03-07 2023-09-14 比亚迪股份有限公司 磷酸铁锂正极活性材料及其制备方法、锂离子电池
CN118117036A (zh) * 2024-04-30 2024-05-31 宁德时代新能源科技股份有限公司 一种电池单体、电池、用电装置及电芯

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CN116111178A (zh) * 2021-11-09 2023-05-12 宁德时代新能源科技股份有限公司 二次电池、用于制备二次电池的方法、电池模块、电池包及用电装置

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CN103782417A (zh) * 2011-09-28 2014-05-07 松下电器产业株式会社 非水电解质二次电池用正极以及非水电解质二次电池
CN106099040A (zh) * 2011-12-08 2016-11-09 索尼公司 电极、二次电池、电池组、电动车辆以及电力储存系统
JP2017199591A (ja) * 2016-04-28 2017-11-02 Ｂａｓｆ戸田バッテリーマテリアルズ合同会社 非水電解質二次電池用の正極活物質粒子及びその製造方法、並びにそれを用いた非水電解質二次電池
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CN103782417A (zh) * 2011-09-28 2014-05-07 松下电器产业株式会社 非水电解质二次电池用正极以及非水电解质二次电池
CN106099040A (zh) * 2011-12-08 2016-11-09 索尼公司 电极、二次电池、电池组、电动车辆以及电力储存系统
CN108431998A (zh) * 2015-12-09 2018-08-21 株式会社村田制作所 正极活性物质、正极、电池、电池组、电子设备、电动车辆、蓄电装置及电力系统
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023169210A1 (zh) * 2022-03-07 2023-09-14 比亚迪股份有限公司 磷酸铁锂正极活性材料及其制备方法、锂离子电池
CN116779777A (zh) * 2022-03-07 2023-09-19 比亚迪股份有限公司 一种磷酸铁锂正极活性材料及其制备方法、正极极片及锂离子电池
CN118117036A (zh) * 2024-04-30 2024-05-31 宁德时代新能源科技股份有限公司 一种电池单体、电池、用电装置及电芯

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EP4131540A1 (en) 2023-02-08
US20230042151A1 (en) 2023-02-09

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