Effect of Mg Dopant on the Electrochemical Performance of LiNi0.5Mn0.5O2 Cathode Materials for Lithium Rechargeable Batteries

作者: C. Nithya , R. Lakshmi , S. Gopukumar

DOI: 10.1149/2.086208JES

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摘要: Positive electrode materials, LiMg x Ni0.5−x Co0.5O2 (x = 0 < 0.5), have been successfully synthesized by microwave-assisted solution technique. The precursor has analyzed TG/DTA and the powder was calcined at 850 °C. XRD patterns reveal that materials exhibit hexagonal layered structure corresponding to \( {R}\overline{3} m \) space group. Coin cells of 2016 type fabricated using material as cathode active lithium foil used counter reference electrode. Test were operated in potential limits between 2.7 4.3 V 1 M LiPF6 1:1 EC/DEC electrolyte. LiMg0.2Ni0.3Co0.5O2 delivers an average discharge capacity around 165 mA hg−1 0.1 C rate over investigated 20 cycles.

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