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A layer-by-layer assembly route to [Mn 1/3Co 1/3Ni 1/3]O 2 hollow spheres with electrochemical activity

Title
A layer-by-layer assembly route to [Mn 1/3Co 1/3Ni 1/3]O 2 hollow spheres with electrochemical activity
Authors
Lee Y.R.Woo M.A.Lee K.M.Kim T.W.Choy J.-H.Hwang S.-J.
Ewha Authors
최진호황성주
SCOPUS Author ID
최진호scopus; 황성주scopus
Issue Date
2012
Journal Title
Journal of Physics and Chemistry of Solids
ISSN
0022-3697JCR Link
Citation
vol. 73, no. 12, pp. 1492 - 1495
Indexed
SCI; SCIE; SCOPUS WOS scopus
Abstract
The monolayered nanosheets of layered [Mn 1/3Co 1/3Ni 1/3]O 2 are prepared by the exfoliation of protonated Li[Mn 1/3Co 1/3Ni 1/3]O 2 compound and applied as a precursor for synthesizing the hollow spheres of manganese cobalt nickel oxide. The hollow spheres of layered [Mn 1/3Co 1/3Ni 1/3]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 [Mn 1/3Co 1/3Ni 1/3]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 [Mn 1/3Co 1/3Ni 1/3]O 2 hollow spheres is verified by cyclic voltammetry. © 2012 ElsevierLtd.Allrightsreserved.
DOI
10.1016/j.jpcs.2011.11.037
Appears in Collections:
자연과학대학 > 화학·나노과학전공 > Journal papers
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