CN114207899A - 二次电池及含有该二次电池的装置 - Google Patents

二次电池及含有该二次电池的装置 Download PDF

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CN114207899A
CN114207899A CN201980098409.2A CN201980098409A CN114207899A CN 114207899 A CN114207899 A CN 114207899A CN 201980098409 A CN201980098409 A CN 201980098409A CN 114207899 A CN114207899 A CN 114207899A
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secondary battery
additive
electrolyte
equal
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吴则利
韩昌隆
付成华
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Contemporary Amperex Technology Co Ltd
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Abstract

本申请提供了一种二次电池及含有该二次电池的装置，二次电池包括负极极片及电解液，所述负极极片包括负极活性材料；所述电解液包括电解质盐、有机溶剂以及添加剂；其中，负极活性材料包括硅基材料；有机溶剂包括碳酸乙烯酯(EC)和碳酸二乙酯(DEC)，碳酸乙烯酯(EC)在有机溶剂中的质量占比≤20％，碳酸二乙酯(DEC)在有机溶剂中的质量占比≤20％；添加剂包括添加剂A和添加剂B；添加剂A选自式1、式2所示的化合物中的一种或几种；添加剂B选自式3的化合物中的一种或几种。本申请的二次电池及含有该二次电池的装置在较高能量密度的前提下，可以同时兼顾较好的高温循环性能、高温存储性能及较低的直流内阻。
Figure DDA0003467184980000011

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。
CN201980098409.2A 2019-12-24 2019-12-24 二次电池及含有该二次电池的装置 Pending CN114207899A (zh)

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Publication number Priority date Publication date Assignee Title
CN116259927A (zh) * 2023-05-15 2023-06-13 蔚来电池科技(安徽)有限公司 二次电池和装置
CN116259927B (zh) * 2023-05-15 2023-08-04 蔚来电池科技(安徽)有限公司 二次电池和装置

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