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A multivariate method for predicting state of charge, from electrochemical data, of a nickel-metal hydride (NiMH)-battery is presented. Partial least square (PLS) regression is used to evaluate electrochemical impedance spectra and predict state of charge. The impedance spectra are analysed in the frequency range 239-0.6 Hz. The impedance is measured for different states of charge at open-circuit...
Quaternary spinels doped with chemically modified chromium oxide (mCrO 2.65 ) LiCr y Mn 2-y O 4 with y=0.02, 0.05 and 0.1 completely stabilize the spinel structure. Cyclic voltammograms of pure spinel exhibit high irreversibility compared with that obtained initially. The spinel doped with chemically modified chrome oxide mCrO 2. ...
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