A layer-by-layer assembly route to [Mn1/3Co1/3Ni1/3]O-2 hollow spheres with electrochemical activity

作者：Lee Yu Ri; Woo Myong A; Lee Kyung Min; Kim Tae Woo; Choy Jin Ho; Hwang Seong Ju^*

来源：Journal of Physics and Chemistry of Solids, 2012, 73(12): 1492-1495.

DOI：10.1016/j.jpcs.2011.11.037

• Nanostructures
• Electrochemical properties
• Oxides
• Inorganic compounds
• Chemical synthesis

The monolayered nanosheets of layered [Mn1/3Co1/3Ni1/3]O-2 are prepared by the exfoliation of protonated Li[Mn1/3Co1/3Ni1/3]O-2 compound and applied as a precursor for synthesizing the hollow spheres of manganese cobalt nickel oxide. The hollow spheres of layered [Mn1/3Co1/3Ni1/3]O-2 are synthesized via the layer-by-layer (LBL) coating of the nanosheets and polycations on the polystyrene (PS) beads and the following heat-treatment. According to powder X-ray diffraction and diffuse reflectance UV-vis spectroscopy, the layered crystal structure and optical property of [Mn1/3Co1/3Ni1/3]O-2 nanosheets are well-maintained upon the coating on the PS beads. The high-resolution transmission electron microscopy clearly demonstrates the hollow sphere morphology of the obtained material. The electrode functionality of the [Mn1/3Co1/3Ni1/3]O-2 hollow spheres is verified by cyclic voltammetry.

• 出版日期2012-12