Synthesis of Mesoporous Fe2O3 Nanorods and Their Electrochemical Performance

Abstract

We have successfully prepared mesoporous FeO(OH) nanorods by the solvothermal method using 2-butanone and water mixture solvent for the first time, which are about 30 nm in diameter and 50 nm in length, and it can be converted to mesoporous Fe2O3 nanorods via calcination at 300°C. The as-prepared samples were characterized using X-ray diffraction, scanning electron microscopy and transmission electron microscopy. The results showed that the product is mesoporous Fe2O3 and some of them are connected. Electrochemical tests demonstrated that the mesoporous Fe2O3 nanorods had an initial discharge capacity up to 1187 mA h g-1 and the discharge capacity of 570 mA h g-1 after 50 cycles at 200 mA g-1. After 100 cycles, the discharge capacity is still maintain at 503 mA h g-1.