Separation of predominant processes in electrochemical impedance spectra of lithium-ion batteries with nickel-manganese-cobalt cathodes
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DOI: 10.1016/j.jpowsour.2019.03.068
Abstract: Abstract Impedance spectra of a high energy lithium-ion battery (graphite vs. NMC) are investigated in detail, using the distribution of relaxation times (DRT) and complementary methods. Two predominant processes are found, one at lower frequencies… read more here.
Keywords: impedance spectra; lithium ion; impedance; predominant processes ... See more keywords
Non-invasive investigation of predominant processes in the impedance spectra of high energy lithium-ion batteries with nickel–cobalt–aluminum cathodes
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DOI: 10.1016/j.jpowsour.2020.228189
Abstract: Abstract Analysis and prediction of the state of health (SOH) of batteries in the electromobility sector is of supreme importance. In this regard, non-invasive techniques present unique opportunities. Electrochemical impedance spectroscopy (EIS) allows detailed investigations… read more here.
Keywords: spectra high; high energy; non invasive; impedance spectra ... See more keywords