Modeling of Diffusion of Metal Ions in Carbon Electrodes for Lithium-Ion Cells
[ 1 ] Politechnika Poznańska | [ 2 ] Instytut Chemii i Elektrochemii Technicznej, Wydział Technologii Chemicznej, Politechnika Poznańska | [ 3 ] Instytut Silników Spalinowych i Napędów, Wydział Inżynierii Lądowej i Transportu, Politechnika Poznańska | [ S ] student | [ P ] employee
[2.7] Civil engineering, geodesy and transport[7.6] Chemical sciences
2023
scientific article
english
- diffusion coefficient
- ionic conductivity
- electrochemical impedance spectroscopy (EIS)
- carbon electrodes
EN The main purpose of these studies is to compare the diffusion coefficient and ionic conductivity of carbon-based anode materials (graphene and corn starch carbon, graphene nanoplatelets) at different temperatures. The tests were carried out using electrochemical impedance spectroscopy (EIS) in a temperature chamber, which allows the assessment of important parameters during the cell's operation and optimization, as well as the thermodynamic and kinetic response of the system to various conditions, which are important parameters taking into account the cell's safety. An interesting method was proposed to determine thermodynamic and kinetic parameters for the development of two models of lithium ion diffusion during half-cell charging. It has been shown that the lithiation process is thermodynamically endothermic and forced. Various carbon materials were used, including corn starch-based carbon as an anode material that equates to the slogans of biodegradability, lower cost and ecology.
2401 - 2417
CC BY (attribution alone)
czasopismo hybrydowe
final published version
at the time of publication
public
70
2,6