Models of lithium transport as applied to determination of diffusion characteristics of intercalation electrodes
| Autor: | Aleksandr V. Ivanishchev, Arseni V. Ushakov, Alexei V. Churikov, M. J. Sneha, Ambesh Dixit, I. A. Ivanishcheva, Prince Babbar |
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| Rok vydání: | 2017 |
| Předmět: |
Chemistry
Intercalation (chemistry) Analytical chemistry 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Electrochemistry 01 natural sciences 0104 chemical sciences Chemical physics Electrode Particle Surface layer Diffusion (business) Cyclic voltammetry 0210 nano-technology Spectroscopy |
| Zdroj: | Russian Journal of Electrochemistry. 53:706-712 |
| ISSN: | 1608-3342 1023-1935 |
| DOI: | 10.1134/s1023193517070047 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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