Numerical simulations of cyclic voltammetry for lithium-ion intercalation in nanosized systems:finiteness of diffusion versus electrode kinetics

Gavilán-Arriazu, E.M. and Mercer, M.P. and Pinto, O.A. and Oviedo, O.A. and Barraco, D.E. and Hoster, H.E. and Leiva, E.P.M. (2020) Numerical simulations of cyclic voltammetry for lithium-ion intercalation in nanosized systems:finiteness of diffusion versus electrode kinetics. Journal of Solid State Electrochemistry. ISSN 1432-8488

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Abstract

The voltammetric behavior of Li(+)intercalation/deintercalation in/from LiMn(2)O(4)thin films and single particles is simulated, supporting very recent experimental results. Experiments and calculations both show that particle size and geometry are crucial for the electrochemical response. A remarkable outcome of this research is that higher potential sweep rates, of the order of several millivolts per second, may be used to characterize nanoparticles by voltammetry sweeps, as compared with macroscopic systems. This is in line with previous conclusions drawn for related single particle systems using kinetic Monte Carlo simulations. The impact of electrode kinetics and finite space diffusion on the reversibility of the process and the finiteness of the diffusion in ion Li / LiMn2O4(de)intercalation is also discussed in terms of preexisting modeling.

Item Type:
Journal Article
Journal or Publication Title:
Journal of Solid State Electrochemistry
Additional Information:
The final publication is available at Springer via http://dx.doi.org/10.1007/s10008-020-04717-9
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/3100/3104
Subjects:
ID Code:
145443
Deposited By:
Deposited On:
10 Aug 2020 10:35
Refereed?:
Yes
Published?:
Published
Last Modified:
22 Sep 2020 05:06