A facile method to fabricate a porous Si/C composite with excellent cycling stability for use as the anode in a lithium ion battery

Abstract

Porous Si/C has been fabricated by dehydrating Si/sucrose mixed powder with concentrated H₂SO₄. The obtained Si/C presents excellent cycling stability with a capacity retention of 85.6% in the 920th cycle at 100 mA g⁻¹, compared with only 13.2% for pure Si in the 100th cycle.