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CN113875049A - 二次电池、其制备方法和含有该二次电池的装置 - Google Patents

二次电池、其制备方法和含有该二次电池的装置 Download PDF

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CN113875049A
CN113875049A CN202080005630.1A CN202080005630A CN113875049A CN 113875049 A CN113875049 A CN 113875049A CN 202080005630 A CN202080005630 A CN 202080005630A CN 113875049 A CN113875049 A CN 113875049A
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negative electrode
active material
silicon
film layer
secondary battery
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王育文
武宝珍
叶永煌
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Contemporary Amperex Technology Co Ltd
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    • H—ELECTRICITY
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    • H01M4/36—Selection of substances as active materials, active masses, active liquids
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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、其制备方法和含有该二次电池的装置，所述二次电池包括负极极片，所述负极极片包括负极集流体及负极膜片；所述负极膜片包括第一负极膜层和第二负极膜层；所述第一负极膜层设置于所述负极集流体至少一个表面上且包括第一负极活性材料，所述第一负极活性材料包括石墨，且所述第一负极活性材料包括或不包括硅基材料；所述第二负极膜层设置于所述第一负极膜层的表面上且包括第二负极活性材料，所述第二负极活性材料包括人造石墨和硅基材料；所述硅基材料在所述第一负极活性材料中的质量占比记为W1，所述硅基材料在所述第二负极活性材料中的质量占比记为W2，所述负极极片满足：W2≥W1。

Description

PCT国内申请，说明书已公开。

Claims (17)

  1. PCT国内申请，权利要求书已公开。
CN202080005630.1A 2020-04-30 2020-04-30 二次电池、其制备方法和含有该二次电池的装置 Pending CN113875049A (zh)

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CN114649500A (zh) * 2022-04-01 2022-06-21 宁德新能源科技有限公司 负极极片、电化学装置及电子设备
CN114975860A (zh) * 2022-06-28 2022-08-30 重庆冠宇电池有限公司 一种负极片和电池
CN115377354A (zh) * 2022-08-30 2022-11-22 惠州锂威新能源科技有限公司 一种含硅基材料负极片和二次电池
CN116364860A (zh) * 2023-06-01 2023-06-30 宁德时代新能源科技股份有限公司 二次电池及其制备方法和用电装置
WO2023134486A1 (zh) * 2022-01-13 2023-07-20 宁德时代新能源科技股份有限公司 负极极片及其制备方法、二次电池、电池模块、电池包和用电装置
CN116830282A (zh) * 2022-09-30 2023-09-29 宁德时代新能源科技股份有限公司 负极极片及其制备方法、二次电池和用电装置
CN116888751A (zh) * 2023-01-03 2023-10-13 宁德时代新能源科技股份有限公司 负极极片以及包含其的电极组件、电池单体、电池和用电装置
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WO2023240612A1 (zh) * 2022-06-17 2023-12-21 宁德时代新能源科技股份有限公司 负极极片、二次电池、电池模块、电池包和用电装置
US11936037B2 (en) 2018-10-02 2024-03-19 Lg Energy Solution, Ltd. Multi-layered anode containing silicon-based compound and lithium secondary battery including the same
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
WO2025025412A1 (zh) * 2023-07-31 2025-02-06 宁德时代新能源科技股份有限公司 二次电池和用电装置

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EP4503165A1 (en) * 2022-09-29 2025-02-05 Contemporary Amperex Technology Co., Limited Secondary battery and electric device
CN115911259A (zh) * 2022-11-21 2023-04-04 江苏正力新能电池技术有限公司 一种电池极组及二次电池
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KR20240116201A (ko) * 2023-01-20 2024-07-29 에스케이온 주식회사 리튬 이차 전지용 음극 및 이를 포함하는 리튬 이차 전지
CN116964770A (zh) * 2023-02-13 2023-10-27 宁德时代新能源科技股份有限公司 二次电池及用电装置
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KR20240153758A (ko) * 2023-04-17 2024-10-24 에스케이온 주식회사 리튬 이차 전지용 음극 및 이를 포함하는 리튬 이차 전지
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