Original Research
Synthesis and Electrochemical Properties of Porous α-Co(OH)2 and Co3O4 Microspheres

https://doi.org/10.1016/j.pnsc.2017.03.001Get rights and content
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Abstract

Both α-Co(OH)2 and Co3O4 porous microspheres have been synthesized by the simple solvothermal process as well as subsequent treatment. The morphologies and structures of the as-synthesized products were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and X-ray photoelectron spectroscopy (XPS). Both samples have spherical structures consisting of nanosheets, with similar crystallinity. The electrochemical properties of both samples were further investigated. Both samples show excellent electrochemical performances including high specific capacity, good cycling stability and rate capability. All results show that these microspheres exhibit potential applications in energy storage field.

Keywords

α-Co(OH)2 microspheres
Co3O4 porous microspheres
Supercapacitor
Cycling stability
Rate capability

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Peer review under responsibility of Chinese Materials Research Society.

1

The first two authors contributed equally to this work.

© 2017 Chinese Materials Research Society. Published by Elsevier B.V.