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Synthesis of SnO 2 Hierarchical Structures Assembled from Nanosheets and Their Lithium Storage Properties

2011; American Chemical Society; Volume: 115; Issue: 50 Linguagem: Inglês

10.1021/jp208158m

1932-7455

Hao Bin Wu, Jun Song Chen, Xiong Wen Lou, Huey Hoon Hng,

ZnO doping and properties

In this work, we have developed a facile hydrothermal method to synthesize various 3D hierarchical structures assembled from 2D SnO2 nanosheets. The samples were thoroughly characterized by FESEM/TEM/XRD/BET techniques. Through in-depth investigation of experimental conditions, it is discovered that the oxidation process is crucial for the formation of the nanosheet structure. The electrochemical properties of the sample were subsequently studied by cyclic voltammetry and charge–discharge cycling. When compared to SnO2 nanoparticles from a commercial source, the result shows that the as-prepared hierarchical SnO2 nanostructure exhibits much better lithium storage properties with higher reversible capacities and improved cyclic capacity retention for extended cycling.