Please use this identifier to cite or link to this item:
Title: Anodic properties of tin oxides with pyrochlore structure for lithium ion batteries
Authors: Sharma, N. 
Subba Rao, G.V. 
Chowdari, B.V.R. 
Keywords: Electrochemical properties
Li-ion batteries
Tin oxides
Issue Date: 13-Sep-2006
Citation: Sharma, N., Subba Rao, G.V., Chowdari, B.V.R. (2006-09-13). Anodic properties of tin oxides with pyrochlore structure for lithium ion batteries. Journal of Power Sources 159 (1 SPEC. ISS.) : 340-344. ScholarBank@NUS Repository.
Abstract: Mixed tin oxides, M2Sn2O7 (M = Y, Nd), with cubic pyrochlore structure were synthesized and characterized by X-ray diffraction and SEM. Galvanostatic cycling versus Li metal in the voltage range, 0.005-1.0 V at the current density of 60 mA g-1 showed that the first-discharge capacities are 913 and 722 mA hg-1 whereas the first-charge capacities are 350 and 265 (±3) mA hg-1, for M = Y and Nd, respectively. The corresponding number of moles of recyclable Li are 3.4 and 3.2 for M = Y and Nd. Crystal structure destruction occurs during the first-discharge leading to the formation of nano-particles of Sn-metal and finally Li4.4Sn in a matrix of Li-M-O. After 50 cycles, both compounds showed a capacity-retention of 89 (±1)% of the 10th cycle reversible capacity. The coulombic efficiency is ∼98%. The average charge and discharge voltages in both compounds are 0.5 and 0.25 V, respectively. Cyclic voltammograms complement the galvanostatic results and showed that a good operating voltage range is 0.005-1.0 V. The electrodic performances of M2Sn2O7 have been compared with those exhibited by other crystalline ternary tin oxides. © 2006 Elsevier B.V. All rights reserved.
Source Title: Journal of Power Sources
ISSN: 03787753
DOI: 10.1016/j.jpowsour.2006.04.050
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.


checked on Jan 21, 2022


checked on Sep 28, 2021

Page view(s)

checked on Jan 20, 2022

Google ScholarTM



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.