CN113994513A - 正极极片与包含其的电化学装置及电子装置 - Google Patents

正极极片与包含其的电化学装置及电子装置 Download PDF

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CN113994513A
CN113994513A CN202080039526.4A CN202080039526A CN113994513A CN 113994513 A CN113994513 A CN 113994513A CN 202080039526 A CN202080039526 A CN 202080039526A CN 113994513 A CN113994513 A CN 113994513A
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material layer
positive electrode
lithium
pole piece
lithium ion
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CN113994513B (zh
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陈鹏伟
王梦
徐磊敏
王亮
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Ningde Amperex Technology Ltd
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    • H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
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Abstract

涉及正极极片(10)与包含其的电化学装置及电子装置。一些实施例提供了一种正极极片(10)，其包括：集流体(101)、第一材料层(102)以及第二材料层(103)。所述第一材料层(102)包含第一材料，以及所述第二材料层(103)包含第二材料。所述第二材料包含以下中的至少一种：通式M1PO4代表的磷酸盐和通式Li3Ti2‑xM2x(PO4)3代表的磷酸钛锂盐，且所述第二材料层(103)设置于所述集流体(101)与所述第一材料层(102)之间。正极极片(10)通过设置包含磷酸盐及磷酸钛锂盐中的至少一种的双层结构以避免正极极片(10)中的集流体(101)与负极材料层的直接接触，并优化第一材料层(102)的稳定性，使得电化学装置的循环性能、电化学稳定性及安全性能得到显著提升。

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。
CN202080039526.4A 2020-02-19 2020-02-19 正极极片与包含其的电化学装置及电子装置 Active CN113994513B (zh)

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WO2024092684A1 (zh) * 2022-11-04 2024-05-10 宁德时代新能源科技股份有限公司 正极极片、二次电池及用电装置
CN117285024B (zh) * 2023-11-03 2024-04-16 江苏珩创纳米科技有限公司 一种钌掺杂磷酸锰铁锂材料及其制备方法

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KR102488974B1 (ko) 2023-01-13
CN113994513B (zh) 2023-02-21
JP7221949B2 (ja) 2023-02-14
EP3896769A1 (en) 2021-10-20
KR20210108300A (ko) 2021-09-02
WO2021163926A1 (zh) 2021-08-26
JP2022524169A (ja) 2022-04-28
US20210257619A1 (en) 2021-08-19
US11862797B2 (en) 2024-01-02

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