Metallic element modified phosphorus-based negative electrode material and preparation method thereof
By generating a metal-phosphorus intermediate phase in situ within a phosphorus-based matrix, the volume expansion and conductivity issues of phosphorus-based anode materials were resolved, resulting in a high-capacity, long-life lithium-ion battery anode material.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- HUAIYIN TEACHERS COLLEGE
- Filing Date
- 2026-04-10
- Publication Date
- 2026-07-17
AI Technical Summary
Existing phosphorus-based anode materials exhibit high volume expansion rate, high electron transport resistance, and are prone to side reactions with the electrolyte during lithium intercalation, leading to rapid degradation of cycle performance. Furthermore, existing modification methods have failed to effectively address the interface stability issue.
By introducing elemental metal particles into a phosphorus matrix to react in situ with phosphorus to form a continuous metal-phosphorus intermediate phase, a three-dimensional conductive network is constructed, which suppresses the side reactions between phosphorus and electrolyte and alleviates volume expansion.
It improves the conductivity and interfacial stability of the material, extends cycle life, and enhances the stability of the electrode structure and the high energy density performance of the battery.
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Abstract
Citation Information
Patent Citations
CN107293725B
CN113336206A