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Facile synthesis and electrochemical properties of alpha-phase ferric oxide hematite cocoons and rods as high-performance anodes for lithium-ion batteries

  • Wei An Ang (a1), Nutan Gupta (a2), Raghavan Prasanth (a3), Huey Hoon Hng (a4) and Srinivasan Madhavi (a5)...

Abstract

Unique cocoon- and rod-shaped alpha-phase ferric oxide, hematite (α-Fe2O3) is prepared by a simple, scalable and surfactant-free chimie douce synthesis. The structure and morphology is confirmed by x-ray diffraction, field-emission scanning electron microscopy and high-resolution transmission electron microscopy. The electrochemical properties of α-Fe2O3 anodes are investigated using cyclic voltammetry, galvanostatic charge-discharge cycling and electrochemical impedance spectroscopy. The mesoporous α-Fe2O3 exhibited an initial discharge capacity >1741 mAh/g with excellent cycling performance and rate capabilities. The solvent used for the preparation of α-Fe2O3 plays a key role in determining the morphology of the materials, which greatly influenced its electrochemical properties.

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a)Address all correspondence to this author. e-mail: madhavi@ntu.edu.sg

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Keywords

Facile synthesis and electrochemical properties of alpha-phase ferric oxide hematite cocoons and rods as high-performance anodes for lithium-ion batteries

  • Wei An Ang (a1), Nutan Gupta (a2), Raghavan Prasanth (a3), Huey Hoon Hng (a4) and Srinivasan Madhavi (a5)...

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