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|Title:||Sol-gel derived nano-crystalline CaSnO3 as high capacity anode material for Li-ion batteries||Authors:||Sharma, N.
Subba Rao, G.V.
|Issue Date:||1-Dec-2002||Citation:||Sharma, N., Shaju, K.M., Subba Rao, G.V., Chowdari, B.V.R. (2002-12-01). Sol-gel derived nano-crystalline CaSnO3 as high capacity anode material for Li-ion batteries. Electrochemistry Communications 4 (12) : 947-952. ScholarBank@NUS Repository. https://doi.org/10.1016/S1388-2481(02)00495-2||Abstract:||CaSnO3 with the distorted-perovskite structure was prepared by sol-gel and high temperature solid-state reaction and electrochemical properties were studied in cell with Li as counter electrode. The sol-gel method gave uniform nano-crystallites (200-300 nm) of CaSnO3 and was shown to deliver a reversible capacity of 380 mAh/g (0.005-1.0 V; 60 mA/g) with good cycling stability up to 45 cycles. The observed capacity involved in the first-discharge and the reversible capacity values during subsequent charge-discharge cycles show that the electrochemical process in CaSnO3 is similar to other Sn-containing mixed oxide systems, viz., an initial structural reduction with Sn-metal formation followed by reversible Li-Sn alloy formation. The performance with respect to the attainable capacity, its retention on charge-discharge cycling and rate capability is better than the previously reported best-performing bulk Sn-oxide or ATCO starting materials which reveals that the perovskite structure and Ca-ion play a beneficial role. © 2002 Elsevier Science B.V. All rights reserved.||Source Title:||Electrochemistry Communications||URI:||http://scholarbank.nus.edu.sg/handle/10635/97960||ISSN:||13882481||DOI:||10.1016/S1388-2481(02)00495-2|
|Appears in Collections:||Staff Publications|
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