Microwave Synthesis of SnO sub(2)/Fe sub(2)O sub(3 ) Nanocomposites for Lithium-Ion Batteries

SnO sub(2)/Fe sub(2)O sub(3) nanocomposites were successfully synthesized by microwave heating. SEM-EDX and XRD analyses and Raman spectroscopy revealed that nanosized SnO sub(2) was deposited on rod-shaped alpha -Fe sub(2)O sub(3) crystals. The SnO sub(2)/Fe sub(2)O sub(3 ) nanocomposites worked as a rechargeable electrode material. The initial insertion capacity of the SnO sub(2)/Fe sub(2)O sub(3 ) nanocomposites achieved 1522 mAh/g that is larger than the theoretical capacity, and the rechargeable capacity at 10 cycles was 862 mAh/g. The initial charge-discharge reaction of the SnO sub(2)/Fe sub(2)O sub(3 ) nanocomposites was caused by the redox reactions of SnO sub(2) and Fe sub(2)O sub(3) and alloying-dealloying reaction of Sn with Li.