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Green Fabrication of Hierarchical CuO Hollow Micro/Nanostructures and Enhanced Performance as Electrode Materials for Lithium-ion Batteries

2008; American Chemical Society; Volume: 112; Issue: 49 Linguagem: Inglês

10.1021/jp808545r

1932-7455

Shuyan Gao, Shuxia Yang, Jie Shu, Shuxia Zhang, Zhengdao Li, Jiang Kai,

ZnO doping and properties

Engineering hierarchical CuO hollow micro/nanostructures was realized by a tyrosine-assisted green strategy. The morphology, composition, and phase structure of as-prepared powders were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS), which showed that the sample was assembled from CuO nanosheets with average diameter of ca. 250 nm, self-wrapping to form hollow interiors with an outer diameter of 1.5−3 μm. The improved electrochemical performance toward Li uptake-release verifies their potential application as anode materials in lithium-ion batteries, which attributes to a three-dimensional current collector network and a chemical/mechanical robustness buffer of the as-formed novel CuO structure.