Facile synthesis and properties of iron oxide spheres coated with carbon

Abstract

In this study, we report the synthesis of iron oxide spheres covered by carbon shell (Fe2O3/C) in a two routs at high temperature reactions: (i) chemical vapor deposition, (ii) high temperature reaction in an autoclave (The obtained Fe2O3 spheres are ∼200 nm in diameter). The well-developed carbon layer on Fe2O3 surface may provide buffered spaces during charge/discharge resulting not only in excellent cycling performance, but also good charge/discharge at high current rates. Therefore, the samples have been tested as electrode material in supercapacitors.