期刊
MICRO & NANO LETTERS
卷 7, 期 8, 页码 757-761出版社
INST ENGINEERING TECHNOLOGY-IET
DOI: 10.1049/mnl.2012.0399
关键词
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资金
- University Natural Scientific Foundation of Jiangsu Province [11KJB150003]
- Foundation of Jiangsu Teachers University of Technology [KYZ11032, KYY11062]
- Practice and Innovation Project for Jiangsu Undergraduates
Hollow urchin-like alpha-FeOOH was successfully prepared without template or surfactant, employing a facile route incorporating hydrothermal treatment with ammonium iron (III) sulphate solution. alpha-FeOOH was characterised by X-ray diffraction, thermal gravimetric analysis, scanning electron microscopy, transmission electron microscopy (TEM), high-resolution TEM (HRTEM) and Fourier transform infrared spectroscopy. The Ostwald ripening process was believed to be the main driving force for the formation of hollow urchin-like architectures. Furthermore, the electrochemical properties of hollow urchin-like a-FeOOH were investigated by cyclic voltammetry (CV) and galvanostatic charge-discharge measurements. The CV results implied that the capacitance was mainly associated with the redox mechanism. The specific capacitance value was 88.5 F/g calculated from the discharge curve at the current density of 0.5 A. g. The hollow urchin-like alpha-FeOOH shows a good electrochemical performance.
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