Reddy, MVWei Jie, TJafta, CJOzoemena, KIMathe, Mahlanyane KSree Kumaran Nair, ASoon Peng, SSobri Idris, MBalakrishna, GEzema, FIChowdari, BVR2014-07-182014-07-182014-05Reddy, M.V, Wei Jie, T, Jafta, C.J, Ozoemena, K.I, Mathe, M.K, Sree Kumaran Nair, A, Soon Peng, S, Sobri Idris, M, Balakrishna, G, Ezema, F.I and Chowdari, B.V.R. 2014. Studies on bare and Mg-doped LiCoO2 as a cathode material for lithium ion batteries. Electrochimica Acta, vol. 128, pp 192-1970013-4686http://www.sciencedirect.com/science/article/pii/S0013468613021646/pdfft?md5=36e30313c5efadfbf635a441c837208b&pid=1-s2.0-S0013468613021646-main.pdfhttp://hdl.handle.net/10204/7507https://www.sciencedirect.com/science/article/pii/S0013468613021646https://doi.org/10.1016/j.electacta.2013.10.192Copyright: 2014 Elsevier. This is the pre/post print. The definitive version is published in Electrochimica Acta, vol. 128, pp 192-197In this paper, we report on the preparation of bare and Mg-doped Li(Mg(subx(Co(sub1-x)O(sub2) (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 (a2.81A° , c14.05A° ). Scanning Electron Microscopy (SEM) show hexagonal type morphology at 800 C. Powder density was close to 5.02 gcm(sup-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 LiCoO(sub2) show main cathodic and anodic redox peaks at 3.9 V and4.0 V, respectively. Galvanostatic cycling of Li(Mg(subx)Co(sub1-x)O(sub2) (x = 0, 0.03, 0.05) showed reversible charge capacity values at the 60th cycle to be: 147 (±3) mAh(sup g-1) (x = 0), 127 (±3) mAh(sup g-1) (x = 0.03), and 131 (±3) mAh(sup g-1) (x = 0.05) cycled at a current density of 30 mA(sup g-1). Capacity retention is also favourable at 98.5%.enMolten salt methodMg-doped LiCoO2CathodesElectrochemical propertiesArticleReddy, M., Wei Jie, T., Jafta, C., Ozoemena, K., Mathe, M. K., Sree Kumaran Nair, A., ... Chowdari, B. (2014). Studies on bare and Mg-doped LiCoO2 as a cathode material for lithium ion batteries. http://hdl.handle.net/10204/7507Reddy, MV, T Wei Jie, CJ Jafta, KI Ozoemena, Mahlanyane K Mathe, A Sree Kumaran Nair, S Soon Peng, et al "Studies on bare and Mg-doped LiCoO2 as a cathode material for lithium ion batteries." (2014) http://hdl.handle.net/10204/7507Reddy M, Wei Jie T, Jafta C, Ozoemena K, Mathe MK, Sree Kumaran Nair A, et al. Studies on bare and Mg-doped LiCoO2 as a cathode material for lithium ion batteries. 2014; http://hdl.handle.net/10204/7507.TY - Article AU - Reddy, MV AU - Wei Jie, T AU - Jafta, CJ AU - Ozoemena, KI AU - Mathe, Mahlanyane K AU - Sree Kumaran Nair, A AU - Soon Peng, S AU - Sobri Idris, M AU - Balakrishna, G AU - Ezema, FI AU - Chowdari, BVR AB - In this paper, we report on the preparation of bare and Mg-doped Li(Mg(subx(Co(sub1-x)O(sub2) (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 (a2.81A° , c14.05A° ). Scanning Electron Microscopy (SEM) show hexagonal type morphology at 800 C. Powder density was close to 5.02 gcm(sup-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 LiCoO(sub2) show main cathodic and anodic redox peaks at 3.9 V and4.0 V, respectively. Galvanostatic cycling of Li(Mg(subx)Co(sub1-x)O(sub2) (x = 0, 0.03, 0.05) showed reversible charge capacity values at the 60th cycle to be: 147 (±3) mAh(sup g-1) (x = 0), 127 (±3) mAh(sup g-1) (x = 0.03), and 131 (±3) mAh(sup g-1) (x = 0.05) cycled at a current density of 30 mA(sup g-1). Capacity retention is also favourable at 98.5%. DA - 2014-05 DB - ResearchSpace DP - CSIR KW - Molten salt method KW - Mg-doped LiCoO2 KW - Cathodes KW - Electrochemical properties LK - https://researchspace.csir.co.za PY - 2014 SM - 0013-4686 T1 - Studies on bare and Mg-doped LiCoO2 as a cathode material for lithium ion batteries TI - Studies on bare and Mg-doped LiCoO2 as a cathode material for lithium ion batteries UR - http://hdl.handle.net/10204/7507 ER -