Abstract
Cyclic voltammetry, galvanostatic charge–discharge technique, potentiostatic intermittent titration technique (PITT), and electrochemical impedance spectroscopy (EIS) were used to study the behavior of a LiMn1.95Cr0.05O4 (substituted lithium–manganese spinel) electrode in nonaqueous electrolytes at 25 °C. Quantitative and qualitative changes of the electrode transport parameters as functions of lithium concentration were analyzed. Several equivalent circuits are discussed; the results obtained by different methods are compared. The PITT and EIS results are in good agreement; the chemical diffusion coefficient D varies within 10−14–10−9 cm2 s−1 depending on the lithium content in the LixMn1.95Cr0.05O4 electrode.
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The authors would like to gratefully acknowledge the Russian Foundation for Basic Research (project #10-03-00301).
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Churikov, A.V., Romanova, V.O. An electrochemical study on the substituted spinel LiMn1.95Cr0.05O4 . Ionics 18, 837–844 (2012). https://doi.org/10.1007/s11581-012-0741-9
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DOI: https://doi.org/10.1007/s11581-012-0741-9