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CN115836437A - 一种电化学装置及包含该电化学装置的电子装置 - Google Patents

一种电化学装置及包含该电化学装置的电子装置 Download PDF

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Publication number
CN115836437A
CN115836437A CN202080002006.6A CN202080002006A CN115836437A CN 115836437 A CN115836437 A CN 115836437A CN 202080002006 A CN202080002006 A CN 202080002006A CN 115836437 A CN115836437 A CN 115836437A
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electrochemical device
active material
polymer
positive
positive electrode
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刘奥
高潮
方占召
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Ningde Amperex Technology Ltd
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Ningde Amperex Technology Ltd
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    • H—ELECTRICITY
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    • H01M4/36—Selection of substances as active materials, active masses, active liquids
    • H01M4/48—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
    • H—ELECTRICITY
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    • H01M10/052—Li-accumulators
    • H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
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    • H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
    • H01M4/131—Electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx
    • H—ELECTRICITY
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    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
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    • H01M4/36—Selection of substances as active materials, active masses, active liquids
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    • H01M4/50—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese
    • H01M4/505—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy
    • H—ELECTRICITY
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  • Chemical & Material Sciences (AREA)
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Abstract

本申请提供了一种电化学装置及包含该电化学装置的电子装置，其中电化学装置包括：正极极片、负极极片、隔离膜和电解液，正极极片包含正极活性材料，正极活性材料包括化学式LiaCoxM1yM2zO2代表的锂过渡金属氧化物颗粒，其中，0.95≤a≤1.05，0.05<x<1，0≤y≤0.9，0<z≤0.2，x+y+z＝1，M1元素为选自Ni或Mn中的一种或两种，M2元素为选自Mg、Al、Ti、La、Y或Zr中的至少一种；隔离膜包括多孔基材和聚合物粘结层，聚合物粘结层设置在多孔基材和正极极片之间，聚合物粘结层对正极极片的粘结力为3N/m至100N/m。本申请的电化学装置能够有效提高正极活性材料的结构稳定性，还能避免因产气而导致的电池厚度膨胀问题。

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。
CN202080002006.6A 2020-03-18 2020-03-18 一种电化学装置及包含该电化学装置的电子装置 Pending CN115836437A (zh)

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CN115117318B (zh) * 2022-07-18 2023-07-21 大连交通大学 介孔羟基氧化铝硅包覆的锂电正极材料的制备工艺
CN115201075B (zh) * 2022-09-16 2022-12-09 江苏正力新能电池技术有限公司 一种测试活性颗粒物电化学过程体积变化率的方法

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US20230207966A1 (en) 2023-06-29

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