Hydrothermal synthesis of cubic a-Fe2O3 microparticles using glycine: Surfacecharacterization, reaction mechanism and electrochemical activity

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dc.contributor.authorYin, C.
dc.contributor.authorMinakshi, M.
dc.contributor.authorRalph, D.
dc.contributor.authorJiang, Z.
dc.contributor.authorXie, Z.
dc.contributor.authorGuo, H.
dc.date.issued2011
dc.description.abstractCubic α-Fe<inf>2</inf>O<inf>3</inf> (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-Fe<inf>2</inf>O<inf>3</inf> microparticles were minerallogically pure. An increase in hydrothermal reaction duration from 10 to 24 h increased the atomic percentages of α-Fe<inf>2</inf>O<inf>3</inf> 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-Fe<inf>2</inf>O<inf>3</inf> microparticles (as cathode material) exhibit an approximate charge capacity of 160 mAh/g and excellent coulombic efficiency of 94%. © 2011 Elsevier B.V.
dc.description.statementofresponsibilityChun-Yang Yina, Manickam Minakshi, David E. Ralph, Zhong-Tao Jiang, Zonghan Xie, Hua Guo
dc.identifier.citationJournal of Alloys and Compounds, 2011; 509(41):9821-9825
dc.identifier.doi10.1016/j.jallcom.2011.08.048
dc.identifier.issn0925-8388
dc.identifier.urihttp://hdl.handle.net/2440/74711
dc.language.isoen
dc.publisherElsevier Science Sa
dc.relation.granthttp://purl.org/au-research/grants/arc/DP1092543
dc.rights© 2011 Elsevier B.V. All rights reserved.
dc.source.urihttps://doi.org/10.1016/j.jallcom.2011.08.048
dc.subjectEnergy storage materials
dc.subjectOxide materials
dc.subjectCrystal growth
dc.subjectα-Fe2O3 microparticles
dc.subjectHydrothermal synthesis
dc.titleHydrothermal synthesis of cubic a-Fe2O3 microparticles using glycine: Surfacecharacterization, reaction mechanism and electrochemical activity
dc.typeJournal article
pubs.publication-statusPublished

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