Synthesis of nanospherical Fe{sub 3}BO{sub 6} anode material for lithium-ion battery by the rheological phase reaction method
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072 (China)
This paper developed a novel method, the rheological phase reaction method, to synthesize nanospherical Fe{sub 3}BO{sub 6}. The sizes and morphologies of products vary with the calcination temperatures. Spherical particles with a uniform size about 40 nm in a monodisperse state were obtained at 800 deg. C, while the spherical particles with a larger size of 100-500 nm were obtained at 900 deg. C. The electrochemical properties of these Fe{sub 3}BO{sub 6} nanospheres were investigated. Sample synthesized at 800 deg. C delivers a high reversible capacity above 500 mAh g{sup -1}. Sample synthesized at 900 deg. C possesses relatively good cycleability with a capacity retaining of 376 mAh g{sup -1} after 10 cycles. The measurement of electrochemical impedance spectra for the first time indicated that smaller Fe{sub 3}BO{sub 6} nanoparticles intend to give higher impedance of solid-electrolyte interface layer and lower charge-transfer impedance after the first discharge. Additionally, it can be speculated that the increase of resistance charge-transfer is the possible reason for the capacity fading during cycling. - Graphical abstract: Nanospherical Fe{sub 3}BO{sub 6} anode material for lithium-ion battery has been synthesized by the rheological phase reaction method. The electrochemical properties of these Fe{sub 3}BO{sub 6} nanospheres show that sample synthesized at 800 deg. C delivers a high reversible capacity above 500 mAh g{sup -1}, and sample synthesized at 900 deg. C possesses relatively good cycleability with a capacity retaining of 376 mAh g{sup -1} after 10 cycles.
- OSTI ID:
- 21128436
- Journal Information:
- Journal of Solid State Chemistry, Vol. 181, Issue 9; Other Information: DOI: 10.1016/j.jssc.2008.05.025; PII: S0022-4596(08)00261-2; Copyright (c) 2008 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved; Country of input: International Atomic Energy Agency (IAEA); ISSN 0022-4596
- Country of Publication:
- United States
- Language:
- English
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