Synthesis and Electrochemical Performance of Urea Assisted Pristine LiMn2O4 Cathode for Li Ion Batteries
- Authors: Iqbal A.1,2, Iqbal Y.2, Khan A.M.3, Ahmed S.1
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Affiliations:
- Department of Chemistry
- Institute of Chemical Sciences
- General Studies Department
- Issue: Vol 91, No 13 (2017)
- Pages: 2671-2679
- Section: Colloid Chemistry and Electrochemistry
- URL: https://journals.rcsi.science/0036-0244/article/view/169844
- DOI: https://doi.org/10.1134/S0036024417130040
- ID: 169844
Cite item
Abstract
We report the synthesis of electrochemically active LiMn2O4 nanoparticles at varied temperature and pH values by sol–gel method using urea as a chelating and combusting agent. The effect of pH and annealing temperature on the structure, morphology and electrochemical performance was evaluated. The results obtained by XRD, SEM, TEM, and FTIR show that LiMn2O4 has uniform porous morphology and highly crystalline particles that can be obtained at pH 7.0 and 8.0 and at a relatively lower temperature of 600°C. Cyclic voltammetry measurements showed reversible redox reactions with fast kinetics corresponding to Li ions intercalation/deintercalation at 600°C at neutral pH 7.0. Charge/discharge studies carried out at a current rate of 40 mA g–1 reveal that LiMn2O4 synthesized at 600°C and pH 7.0 has the best structural stability and excellent cycling performance.
About the authors
Azhar Iqbal
Department of Chemistry; Institute of Chemical Sciences
Email: safeerad@qau.edu.pk
Pakistan, Islamabad, 45320; Peshawar
Yousaf Iqbal
Institute of Chemical Sciences
Email: safeerad@qau.edu.pk
Pakistan, Peshawar
Abdul Majeed Khan
General Studies Department
Email: safeerad@qau.edu.pk
Saudi Arabia, Jubail Industrial City, 31961
Safeer Ahmed
Department of Chemistry
Author for correspondence.
Email: safeerad@qau.edu.pk
Pakistan, Islamabad, 45320