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https://hdl.handle.net/2440/74711
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Type: | Journal article |
Title: | Hydrothermal synthesis of cubic a-Fe2O3 microparticles using glycine: Surfacecharacterization, reaction mechanism and electrochemical activity |
Author: | Yin, C. Minakshi, M. Ralph, D. Jiang, Z. Xie, Z. Guo, H. |
Citation: | Journal of Alloys and Compounds, 2011; 509(41):9821-9825 |
Publisher: | Elsevier Science Sa |
Issue Date: | 2011 |
ISSN: | 0925-8388 |
Statement of Responsibility: | Chun-Yang Yina, Manickam Minakshi, David E. Ralph, Zhong-Tao Jiang, Zonghan Xie, Hua Guo |
Abstract: | Cubic α-Fe2O3 (hematite) microparticles (side lengths = 0.3-1.3 μm) have been synthesized using glycine and ferric chloride via a simple one-step hydrothermal reaction. Their morphological, mineralogical and surface properties have been determined using scanning electron microscopy (SEM), atomic force microscopy (AFM), X-ray diffractometry (XRD) and X-ray photoelectron spectroscopy (XPS). XRD analysis indicated that the synthesized α-Fe2O3 microparticles were minerallogically pure. An increase in hydrothermal reaction duration from 10 to 24 h increased the atomic percentages of α-Fe2O3 on the surface of the microparticles by almost 8%. The mechanism concerning reactions of species to produce this microparticles precipitate was elucidated based on thermodynamics and ionic equilibrium aspects. In the electrochemical analysis, the synthesized α-Fe2O3 microparticles (as cathode material) exhibit an approximate charge capacity of 160 mAh/g and excellent coulombic efficiency of 94%. © 2011 Elsevier B.V. |
Keywords: | Energy storage materials Oxide materials Crystal growth α-Fe2O3 microparticles Hydrothermal synthesis |
Rights: | © 2011 Elsevier B.V. All rights reserved. |
DOI: | 10.1016/j.jallcom.2011.08.048 |
Grant ID: | http://purl.org/au-research/grants/arc/DP1092543 |
Published version: | http://dx.doi.org/10.1016/j.jallcom.2011.08.048 |
Appears in Collections: | Aurora harvest 4 Materials Research Group publications Mechanical Engineering publications |
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