CN115917816A - 锂二次电池及含有其的电池模块、电池包和用电装置 - Google Patents

锂二次电池及含有其的电池模块、电池包和用电装置 Download PDF

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CN115917816A
CN115917816A CN202080102371.4A CN202080102371A CN115917816A CN 115917816 A CN115917816 A CN 115917816A CN 202080102371 A CN202080102371 A CN 202080102371A CN 115917816 A CN115917816 A CN 115917816A
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lithium
secondary battery
active material
equal
positive electrode
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陈兴布
孙信
陈晓
陈政伦
谢浩添
王帮润
李庚�
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Contemporary Amperex Technology Co Ltd
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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
    • H01M4/36—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
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    • H01M10/056—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes
    • H01M10/0564—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes the electrolyte being constituted of organic materials only
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    • H—ELECTRICITY
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    • 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
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    • 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
    • H01M4/133—Electrodes based on carbonaceous material, e.g. graphite-intercalation compounds or CFx
    • H—ELECTRICITY
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    • 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
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    • H01M4/48—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
    • H01M4/483—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides for non-aqueous cells
    • H—ELECTRICITY
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    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
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    • 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
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    • H01M4/583—Carbonaceous material, e.g. graphite-intercalation compounds or CFx
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Abstract

本申请公开了一种二次电池、含有该二次电池的电池模块、电池包和装置。正极包括正极活性物质层，该正极活性物质层含有锂补偿剂，锂补偿剂的分子式为LixNiaCu1‑a‑bMbO2，其中1≤x≤2，0<a<1，0≤b＜0.1，M选自Zn、Sn、Mg、Fe和Mn中的一种或几种。负极活性物质包括石墨和硅材料。电解液中含有氟代碳酸乙烯酯(FEC)。锂补偿剂、负极硅含量、以及氟代碳酸乙烯酯(FEC)的质量占比满足0.2×WSi≤WFEC≤7.5％‑0.6×WL。由此，能够提高循环寿命，并获得较佳的充放电比容量，而且能够降低电池自放电的量。

Description

PCT国内申请，说明书已公开。

Claims (13)

  1. PCT国内申请，权利要求书已公开。
CN202080102371.4A 2020-12-24 2020-12-24 锂二次电池及含有其的电池模块、电池包和用电装置 Pending CN115917816A (zh)

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PCT/CN2020/139182 WO2022133961A1 (zh) 2020-12-24 2020-12-24 锂二次电池及含有其的电池模块、电池包和用电装置

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WO2024074565A1 (en) * 2022-10-05 2024-04-11 Northvolt Ab A lithium ion battery cell

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JP3229425B2 (ja) * 1993-03-29 2001-11-19 松下電器産業株式会社 リチウム二次電池用正極およびその製造法
GB9722006D0 (en) 1997-10-18 1997-12-17 King Reginald A Anti-personnel mine clearance
CN105981210B (zh) * 2014-02-28 2020-09-18 三洋电机株式会社 非水电解质二次电池
CN108807980A (zh) * 2018-09-04 2018-11-13 桑德集团有限公司 正极材料、正极及锂离子电池
CN111668470A (zh) * 2020-06-19 2020-09-15 北京物科清能科技有限公司 一种正极补锂材料及其制备方法与应用
CN112038574B (zh) * 2020-08-31 2021-10-22 蜂巢能源科技有限公司 一种极片膜及其制备方法和用途

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EP4075558A4 (en) 2023-04-05
US20220367871A1 (en) 2022-11-17
WO2022133961A1 (zh) 2022-06-30
US11605816B2 (en) 2023-03-14
EP4075558A1 (en) 2022-10-19

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