An electrochemical impedance spectroscopy study of new lithiated manganese oxides for 3 V application in rechargeable Li-batteries
作者： S Franger , S Bach , J Farcy , J.-P Pereira-Ramos , N Baffier
DOI: 10.1016/S0013-4686(02)00785-5
关键词:
摘要: The main electrochemical properties of 3 V manganese oxides Li0.45MnO2.1 and Li0.45Mn0.85Co0.15O2.3 synthesized via a solution technique are reported. These materials characterized by an attractive cycle life with stable specific capacity in the voltage range 4.2–2 between 165 195 mAh g−1 depending C rate compound. Impedance spectroscopy is used to evaluate chemical diffusion coefficient lithium both cathodic materials. DLi found be twofold higher Co-doped compound little affected Li concentration composition 0.45
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