%0 Journal Article
%A Kadyk, Thomas
%A Sun, Ying
%A Kaur, Jasmin
%A Kulikovsky, Andrei
%A Eikerling, Michael
%T Frequency response diagnostics of electrochemical energy devices
%J Current opinion in electrochemistry
%V 42
%@ 2451-9103
%C Amsterdam
%I Elsevier
%M FZJ-2023-03816
%P 101378
%D 2023
%X The development, fabrication, and operation of electrochemical energy devices like fuel cells, batteries, or electrolyzers require powerful diagnostic techniques. Frequency response analysis methods deconvolute and quantify reaction and transport processes based on their dynamics, extract properties such as conductivity, diffusivity, permeability, and electrocatalytic activity, and assess the state-of-health, stateof-charge of a battery, mass activity of an electrocatalytic layer, or the presence of faults. Taking nonlinear information into account improves process identifiability, while using differentinput or output signals increases the sensitivity towards specific processes. Sensitivity analyses and design of experiments techniques are valuable tools to evaluate different frequency response techniques and help building optimized test protocols.
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:001076855500001
%R 10.1016/j.coelec.2023.101378
%U https://juser.fz-juelich.de/record/1016832