Please use this identifier to cite or link to this item:
|Title:||Studies on Bare and Mg-doped LiCoO2 as a cathode material for Lithium ion Batteries||Authors:||Reddy, M.V.
Molten salt method
|Issue Date:||10-May-2014||Citation:||Reddy, M.V., Jie, T.W., Jafta, C.J., Ozoemena, K.I., Mathe, M.K., Nair, A.S., Peng, S.S., Idris, M.S., Balakrishna, G., Ezema, F.I., Chowdari, B.V.R. (2014-05-10). Studies on Bare and Mg-doped LiCoO2 as a cathode material for Lithium ion Batteries. Electrochimica Acta 128 : 192-197. ScholarBank@NUS Repository. https://doi.org/10.1016/j.electacta.2013.10.192||Abstract:||In this paper, we report on the preparation of bare and Mg-doped Li(Mg xCo1-x)O2 (x = 0, 0.03, 0.05) phases by a molten salt method and their electrochemical properties. They were prepared at 800 °C for 6 h in air. Rietveld refined X-Ray Diffraction data of bare (x = 0) and Mg-doped (x = 0.03, 0.05) compounds show a well-ordered hexagonal layer-type structure (a ∼ 2.81 Å, c ∼ 14.05 Å). Scanning Electron Microscopy (SEM) show hexagonal type morphology at 800°C. Powder density was close to 5.02 gcm-3, which compares well with the theoretical value. Electrochemical properties were studied in the voltage range of 2.5-4.3 V vs. Li using Cyclic Voltammetry (CV) and galvanostatic cycling. CV studies on bare and Mg-doped LiCoO2 show main cathodic and anodic redox peaks at ∼ 3.9 V and ∼ 4.0 V, respectively. Galvanostatic cycling of Li(MgxCo1-x)O2 (x = 0, 0.03, 0.05) showed reversible capacity values at the 60th cycle to be: 147 (±3) mAh g-1 (x = 0), 127 (±3) mAh g-1 (x = 0.03), and 131 (±3) mAh g-1 (x = 0.05) cycled at a current density of 30 mA g-1. Capacity retention is also favourable at 98.5%. © 2013 Published by Elsevier Ltd. All rights reserved.||Source Title:||Electrochimica Acta||URI:||http://scholarbank.nus.edu.sg/handle/10635/98075||ISSN:||00134686||DOI:||10.1016/j.electacta.2013.10.192|
|Appears in Collections:||Staff Publications|
Show full item record
Files in This Item:
There are no files associated with this item.
checked on Aug 14, 2019
WEB OF SCIENCETM
checked on Aug 6, 2019
checked on Aug 17, 2019
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.