Title
Impact of lithium bis(fluorosulfonyl)imide (LiFSI) concentration on lithium intercalation into graphite monitored with Step Potential ElectroChemical Spectroscopy (SPECS)
Authors
[ 1 ] Instytut Chemii i Elektrochemii Technicznej, Wydział Technologii Chemicznej, Politechnika Poznańska | [ P ] employee
Scientific discipline (Law 2.0)
Year of publication
2023
Published in
Article type
scientific article
Publication language
english
Keywords
EN
- Lithium bis(fluorosulfonyl)imide
- Lithium-graphite intercalation
- Step potential electrochemical spectroscopy
- Galvanostatic intermittent titration technique
- Ions diffusion
Abstract
EN Step Potential Electrochemical Spectroscopy (SPECS) analysis of lithium intercalation into graphite was performed. Four different solutions of lithium bis(fluorosulfonyl)imide (LiFSI) salt in EC:DMC solvent (1:1, v:v) with various concentrations (0.1, 1, 5 and 10 mol L−1) were selected as electrolytes. SPECS allowed for calculating the capacity resulting from lithium intercalation between the graphite layers and the capacity that comes from the adsorption of ions on the outer electrode surface, resistance, as well as the diffusion coefficient. Additionally, to compare the results obtained, the galvanostatic intermittent titration technique (GITT) was performed under the same conditions. However, it turned out that initially, similar diffusion parameters are not identical in their meaning. Hence, SPECS can offer fresh insights into the lithium intercalation process in highly concentrated electrolytic solutions, enhancing existing approaches.
Date of online publication
29.06.2023
Pages (from - to)
142796-1 - 142796-9
Comments
Article number: 142796
License type
CC BY (attribution alone)
Open Access Mode
czasopismo hybrydowe
Open Access Text Version
final published version
Release date
29.06.2023
Date of Open Access to the publication
in press
Full text of article
Access level to full text
public
Ministry points / journal
100
Impact Factor
5,5
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