Yurii V. Shmatok, Nataliya I. Globa, Vitalii A. Sirosh, Iryna V. Romanova, Sviatoslav A. Kirillov
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引用次数: 0
Abstract
Fe-doped lithium-manganese spinel of the composition LiFe0.05Mn1.95O4 was synthesized by means of a citric acid-aided route. The influence of annealing temperature on structural and morphological characteristics LiFe0.05Mn1.95O4 is investigated by XRD and SEM methods. Specific and kinetic electrochemical characteristics of LiFe0.05Mn1.95O4 in organic and aqueous electrolyte solutions were studied by galvanostatic cycling method and cyclic voltammetry. LiFe0.05Mn1.95O4 samples annealed at temperatures of 700, 750, and 800 °C demonstrate specific capacity of 114, 102, and 109 mAh g−1 at the cycling current density of 0.5 C, respectively. The best cycling stability and rate performance with discharge currents up to 50 C were obtained in a case of the sample annealed at 750 °C.
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