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二次电池、二次电池用负极极片的制备方法和用电装置

InventionUnknown
11Claims · 3 independent
§ Ⅰ

Dossier Overview

Inventor

罗祥华; 董晓斌; 万淑云; 聂兰蘅; 王家政

Filing Date

Apr 7, 2025

Publication Date

Oct 16, 2026

IPC Classification

H01M 10/058 (2010.01)H01M 10/0525 (2010.01)H01M 10/054 (2010.01)H01M 4/13 (2010.01)H01M 4/139 (2010.01)

本申请公开了二次电池、二次电池用负极极片的制备方法和用电装置。所述二次电池包括负极极片,所述负极极片包括负极集流体和位于所述负极集流体至少一侧的负极活性材料层,基于X射线光电子能谱分析对所述负极活性材料层的测试结果,氧的原子百分含量≤6%。由此,负极活性材料层中,氧的含量较低,负极活性材料层表面的含氧官能团较少,有利于减少充放电过程中活性离子(例如锂离子、钠离子等)的不可逆损耗,从而有利于改善二次电池的循环性能、延长二次电池的使用寿命。

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