Studies on Bare and Mg-doped LiCoO2 as a cathode material for Lithium ion Batteries
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2014
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my.unimap-353552014-06-11T05:12:21Z Studies on Bare and Mg-doped LiCoO2 as a cathode material for Lithium ion Batteries Reddy, M. V. Thor, Wei Jiea Jafta, Charl Jeremy Ozoemena, Kenneth Iyke Mathe, Mkhulu Kenny Nair, A. Sreekumaran Soo, Soon Peng Mohd Sobri, Idris, Dr. Balakrishna, Geetha R. Ezema, Fabian I. Chowdari, B. V R phymvvr@nus.edu.sg kozoemena@csir.co.za kmathe@csir.co.za sreekumarannair@aims.amrita.edu sobri@unimap.edu.my geethabalakrishna@yahoo.co.in Cathode Electrochemical properties Molten salt method Link to publisher's homepage at http://www.elsevier.com 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%. 2014-06-11T05:12:21Z 2014-06-11T05:12:21Z 2014-05 Article Electrochimica Acta, vol. 128, 2014, pages 192-197 0013-4686 http://www.sciencedirect.com/science/article/pii/S0013468613021646 http://dspace.unimap.edu.my:80/dspace/handle/123456789/35355 10.1016/j.electacta.2013.10.192 en Elsevier Ltd. |
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Cathode Electrochemical properties Molten salt method |
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Cathode Electrochemical properties Molten salt method Reddy, M. V. Thor, Wei Jiea Jafta, Charl Jeremy Ozoemena, Kenneth Iyke Mathe, Mkhulu Kenny Nair, A. Sreekumaran Soo, Soon Peng Mohd Sobri, Idris, Dr. Balakrishna, Geetha R. Ezema, Fabian I. Chowdari, B. V R Studies on Bare and Mg-doped LiCoO2 as a cathode material for Lithium ion Batteries |
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Link to publisher's homepage at http://www.elsevier.com |
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phymvvr@nus.edu.sg |
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phymvvr@nus.edu.sg Reddy, M. V. Thor, Wei Jiea Jafta, Charl Jeremy Ozoemena, Kenneth Iyke Mathe, Mkhulu Kenny Nair, A. Sreekumaran Soo, Soon Peng Mohd Sobri, Idris, Dr. Balakrishna, Geetha R. Ezema, Fabian I. Chowdari, B. V R |
| format |
Article |
| author |
Reddy, M. V. Thor, Wei Jiea Jafta, Charl Jeremy Ozoemena, Kenneth Iyke Mathe, Mkhulu Kenny Nair, A. Sreekumaran Soo, Soon Peng Mohd Sobri, Idris, Dr. Balakrishna, Geetha R. Ezema, Fabian I. Chowdari, B. V R |
| author_sort |
Reddy, M. V. |
| title |
Studies on Bare and Mg-doped LiCoO2 as a cathode material for Lithium ion Batteries |
| title_short |
Studies on Bare and Mg-doped LiCoO2 as a cathode material for Lithium ion Batteries |
| title_full |
Studies on Bare and Mg-doped LiCoO2 as a cathode material for Lithium ion Batteries |
| title_fullStr |
Studies on Bare and Mg-doped LiCoO2 as a cathode material for Lithium ion Batteries |
| title_full_unstemmed |
Studies on Bare and Mg-doped LiCoO2 as a cathode material for Lithium ion Batteries |
| title_sort |
studies on bare and mg-doped licoo2 as a cathode material for lithium ion batteries |
| publisher |
Elsevier Ltd. |
| publishDate |
2014 |
| url |
http://dspace.unimap.edu.my:80/dspace/handle/123456789/35355 |
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1643797773220315136 |