Please use this identifier to cite or link to this item:
|Title:||Effect of 0.5 M NaNO 3: 0.5 M KNO 3 and 0.88 M LiNO 3:0.12 M LiCl molten salts, and heat treatment on electrochemical properties of TiO 2||Authors:||Reddy, M.V.
Valerie Teoh, X.W.
Michelle Lim, Y.Y.
|Issue Date:||2012||Citation:||Reddy, M.V., Valerie Teoh, X.W., Nguyen, T.B., Michelle Lim, Y.Y., Chowdari, B.V.R. (2012). Effect of 0.5 M NaNO 3: 0.5 M KNO 3 and 0.88 M LiNO 3:0.12 M LiCl molten salts, and heat treatment on electrochemical properties of TiO 2. Journal of the Electrochemical Society 159 (6) : A762-A769. ScholarBank@NUS Repository.||Abstract:||The compounds, TiO 2-1 -2 were synthesized by 0.5 M NaNO 3: 0.5 M KNO 3 (I) and 0.88 M LiNO 3:0.12 MLiCl (II) salts at 510°C and 280°C, resp., XRD studies show single anatase phase with characteristic tetragonal lattice parameter values of a ∼3.78 Å and c ∼ 9.51 Å. The TEM images show aggregates of 10-30 nm sized nanosquares (TiO 2-1) and spherical particles (TiO 2-2). Surface area of the TiO 2 powders were 74 and 200 m 2 g -1 , resp. for 1 and 2. Upon heat-treatment (TiO 2-2) from 500°C to 850°C, the surface area decreases from 80 to 0.7 m 2 g -1. Cyclic voltammetry studies show cathodic and anodic peaks at ∼1.7 and ∼ 2.0 V, resp. for both bare and heat treated TiO 2 up to 750°C. Galvanostatic cycling studies show that the first discharge-charge capacity values are 244 and 198 (±3) mAh g -1 resp. for TiO 2-1 at a current of 33 mA g -1 in the voltage window, 1.0-2.8 V vs. LiLi +. TiO 2-2 nanoparticles show a less capacity fade during cycling and delivered first discharge-charge capacity values of 340 and 253 (±3) mAh g -1, resp. at a current rate of 33 mA g -1. The effects of heat-treatment and Li-cycling at a cutoff voltage (0.005 V) were studied and discussed reaction mechanism. © 2012 The Electrochemical Society.||Source Title:||Journal of the Electrochemical Society||URI:||http://scholarbank.nus.edu.sg/handle/10635/96288||ISSN:||00134651|
|Appears in Collections:||Staff Publications|
Show full item record
Files in This Item:
There are no files associated with this item.
checked on Mar 6, 2018
WEB OF SCIENCETM
checked on Dec 31, 2018
checked on May 21, 2019
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.