CN113875037A - 二次电池、其制备方法及含有该二次电池的装置 - Google Patents

二次电池、其制备方法及含有该二次电池的装置 Download PDF

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CN113875037A
CN113875037A CN202080006122.5A CN202080006122A CN113875037A CN 113875037 A CN113875037 A CN 113875037A CN 202080006122 A CN202080006122 A CN 202080006122A CN 113875037 A CN113875037 A CN 113875037A
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negative electrode
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CN113875037B (zh
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马建军
沈睿
何立兵
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Contemporary Amperex Technology Co Ltd
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Abstract

一种二次电池(5)、其制备方法及含有该二次电池(5)的装置。具体地，二次电池(5)中，负极膜层包括第一负极膜层(103)和第二负极膜层(102)，所述第一负极膜层(103)设置在负极集流体(101)至少一个表面上且包括第一负极活性材料，所述第二负极膜层(102)设置在第一负极膜层(103)上且包括第二负极活性材料；所述第一负极活性材料包括天然石墨，且所述第一负极活性材料满足：12％≤A≤18％；所述第二负极活性材料包括人造石墨，且所述第二负极活性材料满足：20％≤B≤30％；其中，A为当第一负极活性材料在受到15000N作用力后测试的反弹率，B为当第二负极活性材料在受到15000N作用力后测试的反弹率。该二次电池(5)可以在较高能量密度的前提下，兼顾较好的动力学性能和高温存储性能。

Description

PCT国内申请，说明书已公开。

Claims (12)

  1. PCT国内申请，权利要求书已公开。
CN202080006122.5A 2020-04-30 2020-04-30 二次电池、其制备方法及含有该二次电池的装置 Active CN113875037B (zh)

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CN116888793A (zh) * 2022-10-26 2023-10-13 宁德新能源科技有限公司 电化学装置及电子设备
CN118645586A (zh) * 2023-03-13 2024-09-13 宁德时代新能源科技股份有限公司 正极极片、电池和用电装置

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JP2003346788A (ja) * 2002-05-30 2003-12-05 Yuasa Corp 電池用負極およびそれを用いた電池
CN101047235A (zh) * 2006-03-30 2007-10-03 索尼株式会社 负极和二次电池
CN102931381A (zh) * 2011-08-12 2013-02-13 宁波杉杉新材料科技有限公司 一种各向同性的石墨二次颗粒及其制备方法和用途
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US11322739B2 (en) 2022-05-03
EP3926707A1 (en) 2021-12-22
KR102713119B1 (ko) 2024-10-07
JP2022527148A (ja) 2022-05-31
US20220052321A1 (en) 2022-02-17
CN113875037B (zh) 2023-08-04
JP7234403B2 (ja) 2023-03-07
KR20210134924A (ko) 2021-11-11
EP3926707A4 (en) 2022-04-20
WO2021217628A1 (zh) 2021-11-04

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