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Cathode material 0.5Li 2 MnO 3 ·0.5LiNi 0.5 Mn 0.5 O 2 is successfully synthesized by citrate acid assisted sol–gel method and shows pretty good electro-chemical performance. To elucidate the electro-chemical reactions and charge carrier transportation kinetics in the charge–discharge process, series of electro-chemical impedance spectra for the first and the...
The time domain transients of batteries comprised of LiFePO 4 cathode material exhibit large nonlinearity with the increasing discharging rates. Hence, the calculated overpotential transients match the experimental determined well only when the discharging current is low enough. The results of electrochemical impedance spectra at different OCV level indicate that the change of the parameters...
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