Li2NixFe1−xSiO4 (x = 0, 0.2, 0.4, 0.6, 0.8, and 1) samples were prepared by sol–gel process. The crystal structure of prepared samples of Li2NixFe1−xSiO4 was characterized by XRD. The different crystallographic parameters such as crystallite size and lattice cell parameters have been calculated. Scanning electron microscope (SEM) and Fourier transform infrared spectroscopy (FTIR) investigations were carried out explaining the morphology and function groups of the synthesized samples. Furthermore, electrochemical impedance spectra (EIS) measurements are applied. The obtained results indicated that the highest conductivity is achieved for Li2Ni0.4Fe0.6SiO4 electrode compound. It was observed that Li/Li2Ni0.4Fe0.6SiO4 battery has initial discharge capacity of 164 mAh g−1 at 0.1 C rate. The cycle life performance of all Li2NixFe1−xSiO4 batteries was ranged between 100 and 156 mAh g−1 with coulombic efficiency range between 70.9% and 93.9%.
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May 2017
Technical Briefs
Electrochemical Performance Optimization of Li2NixFe1−xSiO4 Cathode Materials for Lithium-Ion Batteries
Atef Y. Shenouda,
Atef Y. Shenouda
Central Metallurgical Research and
Development Institute (CMRDI),
Tebbin, P.O. Box 87,
Helwan, Cairo 11412, Egypt
e-mail: ayshenouda@yahoo.com
Development Institute (CMRDI),
Tebbin, P.O. Box 87,
Helwan, Cairo 11412, Egypt
e-mail: ayshenouda@yahoo.com
Search for other works by this author on:
M. M. S. Sanad
M. M. S. Sanad
Central Metallurgical Research and
Development Institute (CMRDI),
Tebbin, P.O. Box 87,
Helwan, Cairo 11412, Egypt
Development Institute (CMRDI),
Tebbin, P.O. Box 87,
Helwan, Cairo 11412, Egypt
Search for other works by this author on:
Atef Y. Shenouda
Central Metallurgical Research and
Development Institute (CMRDI),
Tebbin, P.O. Box 87,
Helwan, Cairo 11412, Egypt
e-mail: ayshenouda@yahoo.com
Development Institute (CMRDI),
Tebbin, P.O. Box 87,
Helwan, Cairo 11412, Egypt
e-mail: ayshenouda@yahoo.com
M. M. S. Sanad
Central Metallurgical Research and
Development Institute (CMRDI),
Tebbin, P.O. Box 87,
Helwan, Cairo 11412, Egypt
Development Institute (CMRDI),
Tebbin, P.O. Box 87,
Helwan, Cairo 11412, Egypt
Manuscript received January 5, 2017; final manuscript received March 19, 2017; published online May 9, 2017. Assoc. Editor: Kevin Huang.
J. Electrochem. En. Conv. Stor. May 2017, 14(2): 024501 (5 pages)
Published Online: May 9, 2017
Article history
Received:
January 5, 2017
Revised:
March 19, 2017
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Citation
Shenouda, A. Y., and Sanad, M. M. S. (May 9, 2017). "Electrochemical Performance Optimization of Li2NixFe1−xSiO4 Cathode Materials for Lithium-Ion Batteries." ASME. J. Electrochem. En. Conv. Stor. May 2017; 14(2): 024501. https://doi.org/10.1115/1.4036318
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