Negative electrode material, method for preparing the same, and secondary battery
By constructing a solid solution phase structure in the lithium metal anode and controlling the mass fraction of lithium metal, the problem of dendrite growth in the lithium metal anode was solved, realizing a secondary battery design with high lithium utilization and high energy density, and improving the cycle stability and safety of the battery.
CN119890252BActive Publication Date: 2026-05-29UNIV OF SCI & TECH OF CHINA
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- UNIV OF SCI & TECH OF CHINA
- Filing Date
- 2024-12-17
- Publication Date
- 2026-05-29
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Figure CN119890252B_ABST
Abstract
The present disclosure provides a negative electrode material, a preparation method thereof and a secondary battery. The negative electrode material comprises: lithium metal and a metal alloy, the metal alloy comprises a metal forming a solid solution with the lithium metal; the mass fraction of the lithium metal comprises 60% to 90%; the valence electron concentration of the metal alloy is less than 6.87; and the lithium metal utilization rate in the negative electrode material is higher than 35%.
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