Please use this identifier to cite or link to this item:
|Title:||Anodic behaviour and X-ray photoelectron spectroscopy of ternary tin oxides||Authors:||Sharma, N.
ASnO3 (A = Sr, Ba)
X-ray photoelectron speclroscopy
|Issue Date:||4-Jan-2005||Citation:||Sharma, N., Shaju, K.M., Rao, G.V.S., Chowdari, B.V.R. (2005-01-04). Anodic behaviour and X-ray photoelectron spectroscopy of ternary tin oxides. Journal of Power Sources 139 (1-2) : 250-260. ScholarBank@NUS Repository. https://doi.org/10.1016/j.jpowsour.2004.06.057||Abstract:||The compounds SrSnO3, BaSnO3 and Ca 2SnO4 have been synthesized by solid-state and/or sol-gel methods, characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and scanning electron microscopy (SEM) and their electrochemical properties studied as cathodes versus Li metal in the range 0.005-1.0 V. ASnO3 (A = Sr, Ba), adopt the perovskite structure whereas Ca2SnO4 has the Sr2PbO4 structure. The discharge capacities (mAh g-1) (moles of equivalent Li) on the 20th cycle at a current rate of 30 mA g-1 are: SrSnO 3 (solid-state) (144 (1.4)), SrSnO3 (sol-gel) (222 (2.1)), BaSnO3 (solid-state) (190 (2.2)), BaSnO3 (sol-gel) (156 (1.8)) and Ca2SnO4 (247 (2.4)). The SrSnO3 (sol-gel) with nano-particle morphology displays better galvanostatic cycling performance than SrSnO3 (solid-state). The cycling behaviour of SrSnO3 and BaSnO3 is inferior to that of Ca 2SnO4 and CaSnO3, which demonstrates that 'Ca' is superior as a matrix element than Sr or Ba. The inferior electrochemical performance of Ca2SnO4 in comparison to CaSnO3 reveals that the higher Ca:Sn ratio in the former is not advantageous and the perovskite structure is preferable to that of Sr2PbO4 structure. The coulombic efficiencies are >98% in all cases. Cyclic voltammetry (CV) compliments the observed cycling behaviour. © 2004 Elsevier B.V. All rights reserved.||Source Title:||Journal of Power Sources||URI:||http://scholarbank.nus.edu.sg/handle/10635/95795||ISSN:||03787753||DOI:||10.1016/j.jpowsour.2004.06.057|
|Appears in Collections:||Staff Publications|
Show full item record
Files in This Item:
There are no files associated with this item.
checked on Sep 21, 2020
WEB OF SCIENCETM
checked on Sep 21, 2020
checked on Sep 27, 2020
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.