Analytical Expression for the Impedance Response of an Insertion Electrode Cell | Zendy

Godfrey Sikha | Zendy; Ralph E. White | Zendy

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Analytical Expression for the Impedance Response of an Insertion Electrode Cell

Author(s) -

Godfrey Sikha,

Ralph E. White

Publication year - 2006

Publication title -

journal of the electrochemical society

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.258

H-Index - 271

eISSN - 1945-7111

pISSN - 0013-4651

DOI - 10.1149/1.2372695

Subject(s) - anode , electrical impedance , cathode , electrode , materials science , separator (oil production) , diffusion layer , polypropylene , chemistry , diffusion , analytical chemistry (journal) , thermodynamics , composite material , chromatography , electrical engineering , physics , engineering

An analytical expression for the impedance response of an insertion cathode/separator/foil anode cell sandwich is presented. The analytical expression includes the impedance contributions from interfacial kinetics, double-layer adsorption, and solution-phase and solid-phase diffusion processes. The validity of the analytical solution is ascertained by comparison with the numerical solution obtained for a LiCoO2/polypropylene/lithium metal cell. The flexibility of the analytical solution is utilized to analyze various limiting conditions. An expression to estimate solid-phase diffusion coefficient of insertion species in a porous electrode

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