Kundu, Manab and Mahanty, Sourindra and Basu, Rajendra Nath (2011) Lithium hexaoxo antimonate as an anode for lithium-ion battery. Nanomaterials and Energy, 1 (1). pp. 51-56. ISSN 2045-9831

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The aims of this study were to synthesize lithium hexaoxo antimonate (Li7SbO6) by a solid-state method with thermal treatment at 700°C in a stream of dry oxygen and to investigate its electrochemical properties as an anode in lithium-ion coin cells. X-ray powder diffraction analyses confirm a rhombohedral crystal structure with lattice parameters of a = b = 0·5411 nm and c = 1·5030 nm. Li7SbO6 is electrochemically active with lithium intercalation and deintercalation potentials of ≈0·8 and ≈1·0 V against Li/Li+, respectively. While the initial reversible capacity is low (66 mA h g−1 at 0·05 mA cm−2), an excellent rate performance with no significant fading has been observed up to 100 continuous cycles. Even at very high rates of 5 mA cm−2 (37 C) and 10 mA cm−2 (106 C), 51% and 48% of capacity is retained, with nearly 100% Coulombic efficiency demonstrating the potential of this material for high-rate applications.

Item Type: Article
Uncontrolled Keywords: batteries; oxides; intercalation; Intercalation; Batteries; Oxides
Subjects: Electronics
Depositing User: Bidhan Chaudhuri
Date Deposited: 06 Feb 2012 12:04
Last Modified: 17 Feb 2012 12:23
URI: http://cgcri.csircentral.net/id/eprint/661

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