一种负极材料、负极极片、二次电池及用电装置

By adjusting various parameters of the negative electrode material and optimizing the negative electrode structure, the problem of insufficient cycle performance of secondary batteries was solved, and the performance improvement of lithium-ion batteries with high energy density and low cost was achieved.

CN116779848BActive Publication Date: 2026-07-17NINGDE AMPEREX TECHNOLOGY LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
NINGDE AMPEREX TECHNOLOGY LTD
Filing Date
2023-03-08
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

How to improve the cycle performance of secondary batteries to meet market demand for more cycles and reduce the cost per cycle.

Method used

By synergistically controlling parameters such as Cap.C, Cap.D, BET, Dn10, Dv50, Dv90, Dv99, degree of graphitization, tap density, and OI value of the negative electrode material, the structure and performance of the negative electrode sheet can be optimized within a specific range, thereby improving the cycle performance of the secondary battery.

Benefits of technology

It achieves excellent cycle performance of secondary batteries, improves energy density and kinetic performance, reduces the risk of negative electrode delamination, reduces electrolyte consumption, and enhances the overall performance of lithium-ion batteries.

✦ Generated by Eureka AI based on patent content.

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Abstract

本申请提供了一种负极材料、负极极片、二次电池及用电装置，其中，包含该负极材料的扣式电池的充电克容量为Cap.C mAh / g，扣式电池放电克容量为Cap.D mAh / g，满足13≤Cap.C‑Cap.D≤18，且335.0≤Cap.C≤355.0，320.0≤Cap.D≤340.0，应用该负极材料的二次电池具有优异的循环性能。
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