Models of lithium transport as applied to determination of diffusion characteristics of intercalation electrodes
- Authors: Ivanishchev A.V.1,2, Churikov A.V.2, Ivanishcheva I.A.2, Ushakov A.V.2, Sneha M.J.3, Babbar P.3, Dixit A.3
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Affiliations:
- Center for Electrochemical Energy Storage, Skolkovo Institute of Science and Technology
- Institute of Chemistry
- Department of Physics, Center for Solar Energy
- Issue: Vol 53, No 7 (2017)
- Pages: 706-712
- Section: Article
- URL: https://journals.rcsi.science/1023-1935/article/view/188853
- DOI: https://doi.org/10.1134/S1023193517070047
- ID: 188853
Cite item
Abstract
In order to elucidate the mechanism of lithium transport in intercalation electrodes based on solid lithium-accumulating compounds and determine its parameters, the kinetic models are used which allow the combined analysis of electrode impedance spectroscopy, cyclic voltammetry, pulse chronoampero- and chronopotentiometry data to be carried out. The models describe the stages of consecutive lithium transport in the surface layer and bulk of electrode-material particles, including the accumulation of species in the bulk. The lithium transport stages that occur in the surface layer of an intercalation-material particle and in its bulk are both of the diffusion nature but substantially differ as regards their characteristic times and diffusion coefficients D. Taking account of this peculiarity and assessing adequately the geometrical configuration of intercalation system allow the diffusion parameters of lithium transport to be correctly determined.
About the authors
A. V. Ivanishchev
Center for Electrochemical Energy Storage, Skolkovo Institute of Science and Technology; Institute of Chemistry
Author for correspondence.
Email: ivanischevav@inbox.ru
Russian Federation, Moscow, 143026; Saratov, 410012
A. V. Churikov
Institute of Chemistry
Email: ivanischevav@inbox.ru
Russian Federation, Saratov, 410012
I. A. Ivanishcheva
Institute of Chemistry
Email: ivanischevav@inbox.ru
Russian Federation, Saratov, 410012
A. V. Ushakov
Institute of Chemistry
Email: ivanischevav@inbox.ru
Russian Federation, Saratov, 410012
M. J. Sneha
Department of Physics, Center for Solar Energy
Email: ivanischevav@inbox.ru
India, Jodhpur, Rajasthan, 342011
P. Babbar
Department of Physics, Center for Solar Energy
Email: ivanischevav@inbox.ru
India, Jodhpur, Rajasthan, 342011
A. Dixit
Department of Physics, Center for Solar Energy
Email: ivanischevav@inbox.ru
India, Jodhpur, Rajasthan, 342011