一种基于飞秒激光的镁电极表面加工方法
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- BEIJING UNIV OF TECH
- Filing Date
- 2024-11-02
- Publication Date
- 2026-07-17
AI Technical Summary
The actual discharge performance of magnesium-air batteries differs significantly from the theoretical value, mainly due to the reactive chemical properties of magnesium, which leads to corrosion and self-corrosion hydrogen evolution reactions, reducing the utilization efficiency of the negative electrode and the energy density of the battery. Existing methods for constructing electrode microstructures are complex and affect the bulk grain composition.
Femtosecond lasers are used to precisely process the surface of magnesium electrodes, constructing periodic micro-nano strip structures while maintaining the bulk grain size and microstructure characteristics, thereby enhancing the contact area between the electrode and the electrolyte and reducing the interfacial resistance.
It significantly improves the discharge voltage and specific energy of magnesium-air batteries while maintaining the utilization efficiency of the negative electrode, simplifies the processing, and avoids affecting the bulk grains.
Smart Images
Figure CN119407482B_ABST