Journal
INTERNATIONAL JOURNAL OF MODERN PHYSICS B
Volume 34, Issue 1-3, Pages -Publisher
WORLD SCIENTIFIC PUBL CO PTE LTD
DOI: 10.1142/S0217979220400111
Keywords
Lithium ion battery; silicon-based; carbon source; electrochemical performance
Funding
- Fundamental Research Funds for the Central Universities [51772278]
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Silicon, an anode material for lithium ion batteries, has the highest theoretical specific capacity (similar to 4200 mAh/g). The actual lithium storage capacity of similar to 3579 mAh/g is about 10 times that of the graphite anode materials class. This study involves magnesium heat reduction of the SiO2 preparation of silicon carbon composites. The Si/SiC composite shows a high initial specific capacity of 1406.7 mAh/g with a current density of 0.1 A/g. The morphology and pore size inherited from the SiO2 aerogel counteracts the volume expansion during the lithiation/delithiation process. This paper provides an articulate methodology for designing silicon anode material for high-performance rechargeable lithium-ion batteries.
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