CN113728466A - 负极材料、负极极片、电化学装置和电子装置 - Google Patents

负极材料、负极极片、电化学装置和电子装置 Download PDF

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CN113728466A
CN113728466A CN202080030134.1A CN202080030134A CN113728466A CN 113728466 A CN113728466 A CN 113728466A CN 202080030134 A CN202080030134 A CN 202080030134A CN 113728466 A CN113728466 A CN 113728466A
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silicon
based material
negative electrode
conductive agent
carbon
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CN113728466B (zh
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陈聪荣
陈志焕
崔航
谢远森
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Ningde Amperex Technology Ltd
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Abstract

本公开提供了负极材料、负极极片、电化学装置和电子装置。负极材料包括硅基材料，其中，硅基材料的颗粒具有至少一个凹部，凹部的宽度为50nm～20μm，深度为50nm～10μm。本公开通过采用具有凹陷结构的硅基材料，这种凹陷结构给硅基材料留出一定的膨胀空间，解决了硅基材料的体积膨胀大的问题。另外，凹陷结构的硅基材料在与碳材料、导电剂等复合制成负极极片时，较小的碳材料颗粒和导电剂嵌入硅基材料的凹部，解决了凹陷结构的硅基负极材料压实密度不高的问题，弥补了凹陷结构体积能量密度低的缺陷。

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。
CN202080030134.1A 2020-03-31 2020-03-31 负极材料、负极极片、电化学装置和电子装置 Active CN113728466B (zh)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130089783A1 (en) * 2011-10-05 2013-04-11 Ha-Na Yoo Negative Active Material and Lithium Battery Containing the Negative Active Material
CN105047892A (zh) * 2015-08-03 2015-11-11 中国科学院宁波材料技术与工程研究所 多孔硅材料、其制备方法与应用
CN107482206A (zh) * 2017-09-10 2017-12-15 绵阳梨坪科技有限公司 一种锂离子电池用稳定性佳复合负极材料的制备方法
CN108306006A (zh) * 2018-01-31 2018-07-20 北京国能电池科技股份有限公司 负极材料、负极片及其制备方法、锂离子电池及其制备方法
CN108336342A (zh) * 2018-02-28 2018-07-27 宁波富理电池材料科技有限公司 Si/SiOx/C复合负极材料、其制备方法及锂离子电池

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8148011B2 (en) * 2006-05-31 2012-04-03 Uchicago Argonne, Llc Surface stabilized electrodes for lithium batteries
CN110137485B (zh) * 2019-06-26 2021-02-09 珠海冠宇电池股份有限公司 一种含有表面修饰膜的硅负极材料的制备方法

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130089783A1 (en) * 2011-10-05 2013-04-11 Ha-Na Yoo Negative Active Material and Lithium Battery Containing the Negative Active Material
CN105047892A (zh) * 2015-08-03 2015-11-11 中国科学院宁波材料技术与工程研究所 多孔硅材料、其制备方法与应用
CN107482206A (zh) * 2017-09-10 2017-12-15 绵阳梨坪科技有限公司 一种锂离子电池用稳定性佳复合负极材料的制备方法
CN108306006A (zh) * 2018-01-31 2018-07-20 北京国能电池科技股份有限公司 负极材料、负极片及其制备方法、锂离子电池及其制备方法
CN108336342A (zh) * 2018-02-28 2018-07-27 宁波富理电池材料科技有限公司 Si/SiOx/C复合负极材料、其制备方法及锂离子电池

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EP4131486A4 (en) 2023-05-10
CN113728466B (zh) 2024-05-14
WO2021195914A1 (zh) 2021-10-07
US20230052928A1 (en) 2023-02-16

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