CN109661739A - 二次电池及其阴极极片 - Google Patents

二次电池及其阴极极片 Download PDF

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Publication number
CN109661739A
CN109661739A CN201680088979.XA CN201680088979A CN109661739A CN 109661739 A CN109661739 A CN 109661739A CN 201680088979 A CN201680088979 A CN 201680088979A CN 109661739 A CN109661739 A CN 109661739A
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active material
cathode
priming coat
secondary cell
material layer
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CN109661739B (zh
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李振华
邹武元
金海族
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Contemporary Amperex Technology Co 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
    • H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
    • H01M4/136—Electrodes based on inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy
    • 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
    • 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
    • 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
    • H01M4/5825—Oxygenated metallic salts or polyanionic structures, e.g. borates, phosphates, silicates, olivines
    • 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
    • H01M4/621—Binders
    • H01M4/622—Binders being polymers
    • 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
    • H01M4/626—Metals
    • 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
    • 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
    • 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)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Battery Electrode And Active Subsutance (AREA)

Abstract

本发明公开了一种二次电池及其使用的阴极极片。所述阴极极片包括阴极集流体和三元活性物质层，三元活性物质层中包含阴极活性物质；还包括设置在阴极集流体上的底涂层，三元活性物质层设置在底涂层上；所述底涂层包括阴极活性物质、导电剂和粘结剂，底涂层中阴极活性物质的比表面积是三元活性物质层中阴极活性物质比表面积的1.2倍以上。与现有技术相比，本发明二次电池在阴极集流体和三元活性物质层之间设置有底涂层，且底涂层中阴极活性物质的比表面积是三元活性物质层中阴极活性物质比表面积的1.2倍以上，这增加了底涂层和三元活性物质层的接触面积，有利于降低界面接触阻抗，从而有利于提高二次电池的循环性能，降低电池使用过程中的内阻增加。

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。
CN201680088979.XA 2016-09-21 2016-09-21 二次电池及其阴极极片 Active CN109661739B (zh)

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PCT/CN2016/099552 WO2018053699A1 (zh) 2016-09-21 2016-09-21 二次电池及其阴极极片

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114825562A (zh) * 2022-06-27 2022-07-29 宁德新能源科技有限公司 电源模块以及用电装置

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018224908A1 (en) 2017-06-07 2018-12-13 3M Innovative Properties Company Fluids for immersion cooling
CN112802992B (zh) * 2020-12-30 2022-10-14 珠海冠宇电池股份有限公司 一种极片和锂离子电池

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US20110183203A1 (en) * 2010-01-27 2011-07-28 Molecular Nanosystems, Inc. Polymer supported electrodes
CN103378352A (zh) * 2012-04-25 2013-10-30 协鑫动力新材料（盐城）有限公司 锂离子电池正极极片及其制备方法
CN103378351A (zh) * 2012-04-17 2013-10-30 协鑫动力新材料（盐城）有限公司 电池正极极片及制备方法
CN103633291A (zh) * 2012-08-23 2014-03-12 万向电动汽车有限公司 一种锂离子电池正极极片及制作方法
CN103811727A (zh) * 2013-12-18 2014-05-21 上海航天电源技术有限责任公司 一种安全型锂离子电池正极片及其制备方法
CN104300123A (zh) * 2014-03-20 2015-01-21 中航锂电（洛阳）有限公司 一种混合正极材料、使用该正极材料的正极片及锂离子电池

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JP5150966B2 (ja) * 2007-05-28 2013-02-27 Ｎｅｃエナジーデバイス株式会社 非水電解液二次電池用正極およびそれを用いた非水電解液二次電池
CN102792491A (zh) * 2010-09-30 2012-11-21 株式会社Lg化学 用于锂二次电池的阴极和包含所述阴极的锂二次电池

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110183203A1 (en) * 2010-01-27 2011-07-28 Molecular Nanosystems, Inc. Polymer supported electrodes
CN103378351A (zh) * 2012-04-17 2013-10-30 协鑫动力新材料（盐城）有限公司 电池正极极片及制备方法
CN103378352A (zh) * 2012-04-25 2013-10-30 协鑫动力新材料（盐城）有限公司 锂离子电池正极极片及其制备方法
CN103633291A (zh) * 2012-08-23 2014-03-12 万向电动汽车有限公司 一种锂离子电池正极极片及制作方法
CN103811727A (zh) * 2013-12-18 2014-05-21 上海航天电源技术有限责任公司 一种安全型锂离子电池正极片及其制备方法
CN104300123A (zh) * 2014-03-20 2015-01-21 中航锂电（洛阳）有限公司 一种混合正极材料、使用该正极材料的正极片及锂离子电池

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114825562A (zh) * 2022-06-27 2022-07-29 宁德新能源科技有限公司 电源模块以及用电装置
CN114825562B (zh) * 2022-06-27 2022-11-25 宁德新能源科技有限公司 电源模块以及用电装置
WO2024001571A1 (zh) * 2022-06-27 2024-01-04 宁德新能源科技有限公司 电源模块以及用电装置

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CN109661739B (zh) 2021-11-02
WO2018053699A1 (zh) 2018-03-29
EP3518329A1 (en) 2019-07-31
EP3518329B1 (en) 2023-06-28
EP3518329A4 (en) 2020-09-16

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