期刊
JOURNAL OF ALLOYS AND COMPOUNDS
卷 695, 期 -, 页码 329-336出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2016.10.174
关键词
Co3O4; Nanostructures; Solvothermal method; Cyclic voltammetry; Li-ion batteries; Field emission scanning electron microscopy
资金
- National Research Foundation of Korea (NRF) grant - Korea government (MSIP) [2014R1A2A1A11052414]
- Deanship of Scientific Research at king Saud University [1437-006]
The self-assembled Co3O4 microspheres made of nanoplatelets were prepared by a novel and simple solvothermal route. The crystal structure and morphology were characterized by X-ray diffraction (XRD) and field emission scanning electron microscopy (FESEM), respectively. The FESEM shows that the average diameter of the microspheres is about 8 mm and the thickness of individual nanoplatelets is 30 -70 nm. X-ray photoelectron spectroscopy (XPS) studies reveal two strong peaks appearing at 780.6 and 797.0 eV, corresponding to the core level electrons for Co 2p(3/2) and Co 2p(1/2), which are characteristic XPS peaks of Co3O4 phase. The electrochemical properties of cobalt oxide nanoplatelets modified electrodes were scrutinized by cyclic voltammetry (CV) and charge-discharge profile with cycles, showing a stable reversible capacity of 620 mA h/g after 40 cycles. (C) 2016 Elsevier B.V. All rights reserved.
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