Please use this identifier to cite or link to this item:
|Title:||Lithium-storage and cycleability of nano-CdSnO3 as an anode material for lithium-ion batteries|
Subba Rao, G.V.
|Citation:||Sharma, Y., Sharma, N., Subba Rao, G.V., Chowdari, B.V.R. (2009-07-15). Lithium-storage and cycleability of nano-CdSnO3 as an anode material for lithium-ion batteries. Journal of Power Sources 192 (2) : 627-635. ScholarBank@NUS Repository. https://doi.org/10.1016/j.jpowsour.2009.02.096|
|Abstract:||Nano-CdSnO3 is prepared by thermal decomposition of the precursor, CdSn(OH)6 at 600 °C for 6 h in air. The material is characterized physically by X-ray diffraction (XRD), high-resolution transmission electron microscopy (HR-TEM) and selected-area electron diffraction (SAED) techniques. Nano-CdSnO3 exhibits a reversible and stable capacity of 475(±5) mAh g-1 (∼5 mol of cycleable Li per mole of CdSnO3) for at least 40 cycles between 0.005 and 1.0 V at a current rate of 0.13 C. Extensive capacity fading is found when cycling in the range 0.005-1.3 V. Cyclic voltammetry studies complement galvanostatic cycling data and reveal average discharge and charge potentials of 0.2 and 0.4 V, respectively. The proposed reaction mechanism is supported by ex situ XRD, TEM and SAED studies. The electrochemical impedance spectra taken during 1st and 10th cycle are fitted with an equivalent circuit to evaluate impedance parameters and the apparent chemical diffusion coefficient (DL i+) of Li. The bulk impedance, Rb, dominates at low voltages (≤0.25 V), whereas the combined surface film and charge-transfer impedance (R(sf+ct)) and the Warburg impedance dominate at higher voltages, ≥0.25 V. The DL i+ is in the range of (0.5-0.9) × 10-13 cm2 s-1 at V = 0.5-1.0 V during the 10th cycle. © 2009 Elsevier B.V. All rights reserved.|
|Source Title:||Journal of Power Sources|
|Appears in Collections:||Staff Publications|
Show full item record
Files in This Item:
There are no files associated with this item.
checked on Jul 13, 2018
WEB OF SCIENCETM
checked on Jun 12, 2018
checked on Jul 6, 2018
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.