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Microwave-assisted hydrothermal synthesis of cobalt phosphide nanostructures for advanced supercapacitor electrodes

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Abstract

Cobalt phosphide (Co2P) nanoshuttles were synthesized via simple microwave-assisted hydrothermal treatment of cobalt chloride and yellow phosphorus at 220 °C for 30 min. Their crystalline structure and morphology were characterized by scanning electron microscopy, transmission electron microscopy, X-ray diffraction, and X-ray photoelectron spectroscopy. The as-prepared nanoshuttles were ∼20 μm long, and their diameter decreased from about 300 nm in the central part to <30 nm at their terminal tips. A combined oriented attachment and Ostwald ripening mechanism is proposed for the Co2P nanoshuttle formation, based on the experimental results and density functional theory calculations. The as-prepared Co2P nanoshuttles exhibited excellent electrochemical properties, e.g., a specific capacitance of 246 F g−1 at a discharge current density of 1 A g−1 along with excellent cycling stability, suggesting their great application potential in high-performance energy storage/conversion devices.

Graphical abstract: Microwave-assisted hydrothermal synthesis of cobalt phosphide nanostructures for advanced supercapacitor electrodes

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Publication details

The article was received on 12 Jan 2018, accepted on 21 Mar 2018 and first published on 21 Mar 2018


Article type: Paper
DOI: 10.1039/C8CE00054A
Citation: CrystEngComm, 2018, Advance Article
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    Microwave-assisted hydrothermal synthesis of cobalt phosphide nanostructures for advanced supercapacitor electrodes

    F. Liang, L. Huang, L. Tian, J. Li, H. Zhang and S. Zhang, CrystEngComm, 2018, Advance Article , DOI: 10.1039/C8CE00054A

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