Connection of CVs and impedance spectra of reversible redox systems, as used for the validation of a dynamic electrochemical impedance spectrum measurement system
Sign Up to like & getrecommendations! Published in 2020 at "Journal of Solid State Electrochemistry"
DOI: 10.1007/s10008-020-04661-8
Abstract: With the purpose of fast characterization of electrode reactions, a dynamic electrochemical impedance spectrum (dEIS) measurement system has been assembled which permits the continuous collection of audio-frequency impedance spectra while performing cyclic voltammetry measurements with… read more here.
Keywords: system; electrochemical impedance; dynamic electrochemical; impedance spectra ... See more keywords
Investigation of the influence of different bracing of automotive pouch cells on cyclic liefetime and impedance spectra
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Energy Storage"
DOI: 10.1016/j.est.2018.11.019
Abstract: Abstract Lithium-Ion pouch cells are types of cells with great potential regarding energy and power densities to design of battery systems and battery modules in electromobility. These cells pose a high demand on their placement… read more here.
Keywords: pouch cells; impedance; impedance spectra; investigation influence ... See more keywords
Separation of predominant processes in electrochemical impedance spectra of lithium-ion batteries with nickel-manganese-cobalt cathodes
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Power Sources"
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
Sign Up to like & getrecommendations! Published in 2018 at "Journal of Power Sources"
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
Understanding the validity of impedance and modulus spectroscopy on exploring electrical heterogeneity in dielectric ceramics
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DOI: 10.1063/1.5081842
Abstract: Combined modulus and impedance spectra are widely employed to explore electrical inhomogeneity and carriers' behaviors in dielectric ceramics based on equivalent circuit. However, discrepancies are found between practical dielectric responses and widely proposed equivalent circuits.… read more here.
Keywords: frequency; impedance spectra; modulus impedance; spectroscopy ... See more keywords