Article ID Journal Published Year Pages File Type
180827 Electrochemistry Communications 2010 4 Pages PDF
Abstract

Uniform α-Fe2O3 nanocapsules with a high surface area were synthesized by a novel wrap–bake–peel approach consisting of silica coating, heat treatment and finally the removal of the silica coating layer. The length, diameter and shell thickness of the hematite nanocapsules were about 65, 15 and 5 nm, respectively. The electrochemical properties of the α-Fe2O3 nanocapsules were investigated by cyclic voltammetry and charge/discharge measurements. The α-Fe2O3 nanocapsules showed a high reversible capacity of 888 mAh/g in the initial cycle and 740 mAh/g after 30 cycles as well as good capacity retention. This excellent electrochemical performance was attributed to the high surface area, thin shell and volume space of the hollow structure.

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Physical Sciences and Engineering Chemical Engineering Chemical Engineering (General)
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