Room temperature reduction and hydrolysis of <font>FeCl</font>3⋅6<font>H</font>2<font>O</font> on self-sacrifice microscale <font>Cu</font>2<font>O</font> octahedron template: A mild chemical synthesis of pseudocapacitor electrode materials

Fe ( OH )x (x = 2, 3) colloidal aggregations were synthesized at room temperature via a reduction and hydrolysis of FeCl 3⋅6 H 2 O on microscale Cu 2 O octahedron, which functions as a self-sacrifice template. We herein proposed the growth of Fe ( OH )x colloidal aggregation by redox etching Cu 2 O octahedron while two critical reactions of both redox and precipitation were well employed in this work. As-synthesized Fe ( OH )x samples exhibited high specific capacitance of 242.7 F/g, which was higher than those available data of iron oxides and hydroxides.