高含氮碳骨架材料制备方法及其在钠金属电池阳极保护中的应用
The high-nitrogen-content carbon framework material prepared by freeze-drying and secondary carbonization processes solves the problems of uneven deposition and dendrite growth in sodium metal anodes, achieving high energy density and safety in sodium metal batteries, and is suitable for anode protection in sodium metal batteries.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- HUAZHONG UNIV OF SCI & TECH
- Filing Date
- 2023-05-04
- Publication Date
- 2026-07-17
AI Technical Summary
Existing sodium metal anode materials suffer from problems such as uneven sodium ion deposition, sodium dendrite growth, and short circuits and thermal runaway caused by the reaction of metallic sodium with organic electrolytes during battery operation, making it difficult to meet the requirements for high energy density and safety.
A method for preparing high-nitrogen-content carbon framework materials was adopted, which involves freeze-drying and secondary carbonization processes to form a high-nitrogen-content carbon framework material with rich microstructure and self-support. This material is used for anode protection of sodium metal batteries and is combined with conductive agents and binders to form a composite electrode.
It achieves uniform deposition of sodium metal, avoids the formation of sodium dendrites, improves coulombic efficiency and cycle life, and has good conductivity and stability, making it suitable for large-scale industrial production.
Smart Images
Figure CN116639677B_ABST