Abstract
The synthesis of nano-sized Si with various microstructures has been studied intensively to produce anode materials for Li-rechargeable batteries. Methods such as chemical/physical vapor deposition (CVD/PVD) and wet-chemical processes are currently used to produce nano-sized Si; however, the complicated synthesis procedures and low production yields are critical problems that hinder commercialization. We present a method for producing large quantities of mesoporous nano-sized Si through the reduction of amorphous SiO2 with Mg metal, by using a high-energy mechanical milling process (i.e., magnesio-mechanochemical processing) for 1h. A mesoporous nano-sized Si electrode shows excellent electrochemical performance as an anode for Li-ion batteries, achieving a capacity greater than 1600mAhg-1 over 30cycles.
Original language | English (US) |
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Pages (from-to) | 327-331 |
Number of pages | 5 |
Journal | Energy Technology |
Volume | 1 |
Issue number | 5-6 |
DOIs | |
State | Published - Jun 1 2013 |
Externally published | Yes |
Keywords
- Electrochemistry
- Li-ion batteries
- Mesoporous materials
- Milling
- Silicon
ASJC Scopus subject areas
- General Energy