CN113748546A - 负极极片、二次电池及其装置 - Google Patents

负极极片、二次电池及其装置 Download PDF

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CN113748546A
CN113748546A CN202080005544.0A CN202080005544A CN113748546A CN 113748546 A CN113748546 A CN 113748546A CN 202080005544 A CN202080005544 A CN 202080005544A CN 113748546 A CN113748546 A CN 113748546A
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layer
current collector
active material
secondary battery
composite current
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李铖
黄起森
刘欣
盛长亮
王铈汶
刘向辉
彭佳
李铭领
梁成都
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Contemporary Amperex Technology Co Ltd
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Abstract

一种负极极片、二次电池及其装置。该二次电池包括负极极片(30)，该负极极片包括复合集流体(10)和设置于复合集流体(10)的至少一个表面上的负极活性材料层(20)，负极活性材料层(20)包含硅基活性材料，所述硅基活性材料占负极活性材料层(20)总质量的0.5wt％～50wt％，复合集流体(10)包含聚合物支撑层(101)以及设置于聚合物支撑层(101)的至少一个表面上的金属导电层(102)，复合集流体(10)的脆性参数C在0.03～0.5范围内。该二次电池和负极极片(30)实现了集流体(10)与负极活性材料层(20)之间的良好匹配，改善硅基负极极片(30)在充放电过程中的粉化脱落问题，从而获得了较高的重量能量密度，同时提高二次电池的循环寿命。

Description

PCT国内申请，说明书已公开。

Claims (16)

  1. PCT国内申请，权利要求书已公开。
CN202080005544.0A 2020-04-17 2020-04-17 负极极片、二次电池及其装置 Pending CN113748546A (zh)

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114361463A (zh) * 2021-12-17 2022-04-15 合肥国轩高科动力能源有限公司 一种复合集流体的制备方法
CN114479146A (zh) * 2022-02-17 2022-05-13 江阴纳力新材料科技有限公司 聚多酚改性的聚合物膜及其制备方法、金属化聚合物膜
CN114744203A (zh) * 2022-04-20 2022-07-12 江阴纳力新材料科技有限公司 具有金属立体网络结构的复合集流体及其制备方法、电极极片和电池
CN114824441A (zh) * 2022-05-09 2022-07-29 江苏正力新能电池技术有限公司 一种电芯、电池模组和电池包
CN115133231A (zh) * 2022-06-28 2022-09-30 昆山卓微得焊接科技有限公司 基于镍补偿的多层复合集流体与极耳的连接结构及制备方法
CN115188921A (zh) * 2022-06-24 2022-10-14 江苏正力新能电池技术有限公司 一种硅基负极极片、二次电池和用电装置
CN115188922A (zh) * 2022-06-24 2022-10-14 江苏正力新能电池技术有限公司 硅基负极极片及含该负极极片的二次电池、用电装置
CN115832242A (zh) * 2022-07-19 2023-03-21 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、电池包及用电装置
CN115832193A (zh) * 2022-09-19 2023-03-21 宁德时代新能源科技股份有限公司 极片、电极组件、电池单体和电池
WO2024011536A1 (zh) * 2022-07-14 2024-01-18 扬州纳力新材料科技有限公司 铜复合集流体及其制备方法和应用

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CN115810760A (zh) * 2022-11-30 2023-03-17 宁德时代新能源科技股份有限公司 集流体及其制备方法、电极片、二次电池及用电装置

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CN110943227A (zh) * 2019-05-31 2020-03-31 宁德时代新能源科技股份有限公司 复合集流体、电极极片及电化学装置

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CN108832134A (zh) * 2018-06-28 2018-11-16 清陶（昆山）新能源材料研究院有限公司 一种柔性集流体及其制备方法以及在锂离子电池中的应用
CN110660998B (zh) * 2018-09-17 2020-12-04 宁德时代新能源科技股份有限公司 集流体、电极极片及电化学装置
CN111180735B (zh) * 2019-05-31 2021-05-07 宁德时代新能源科技股份有限公司 负极集流体、负极极片及电化学装置

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Publication number Priority date Publication date Assignee Title
JP2015185407A (ja) * 2014-03-25 2015-10-22 三洋電機株式会社 非水電解質二次電池
CN105845978A (zh) * 2016-03-30 2016-08-10 宁德时代新能源科技股份有限公司 锂离子电池
CN109461880A (zh) * 2018-10-17 2019-03-12 宁德时代新能源科技股份有限公司 负极极片及电池
CN110943222A (zh) * 2019-04-15 2020-03-31 宁德时代新能源科技股份有限公司 一种电极极片和电化学装置
CN110943227A (zh) * 2019-05-31 2020-03-31 宁德时代新能源科技股份有限公司 复合集流体、电极极片及电化学装置

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114361463A (zh) * 2021-12-17 2022-04-15 合肥国轩高科动力能源有限公司 一种复合集流体的制备方法
CN114479146A (zh) * 2022-02-17 2022-05-13 江阴纳力新材料科技有限公司 聚多酚改性的聚合物膜及其制备方法、金属化聚合物膜
CN114744203A (zh) * 2022-04-20 2022-07-12 江阴纳力新材料科技有限公司 具有金属立体网络结构的复合集流体及其制备方法、电极极片和电池
CN114824441A (zh) * 2022-05-09 2022-07-29 江苏正力新能电池技术有限公司 一种电芯、电池模组和电池包
CN115188921A (zh) * 2022-06-24 2022-10-14 江苏正力新能电池技术有限公司 一种硅基负极极片、二次电池和用电装置
CN115188922A (zh) * 2022-06-24 2022-10-14 江苏正力新能电池技术有限公司 硅基负极极片及含该负极极片的二次电池、用电装置
CN115133231A (zh) * 2022-06-28 2022-09-30 昆山卓微得焊接科技有限公司 基于镍补偿的多层复合集流体与极耳的连接结构及制备方法
WO2024011536A1 (zh) * 2022-07-14 2024-01-18 扬州纳力新材料科技有限公司 铜复合集流体及其制备方法和应用
CN115832242A (zh) * 2022-07-19 2023-03-21 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、电池包及用电装置
CN115832193A (zh) * 2022-09-19 2023-03-21 宁德时代新能源科技股份有限公司 极片、电极组件、电池单体和电池

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