Affiliation:
1. Poznań University of Technology
Abstract
Abstract
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.
Funder
European Research Council
Publisher
Research Square Platform LLC
Reference46 articles.
1. Energy-storage technologies and electricity generation;Hall PJ;Energy Policy,2008
2. Commercialization of sustainable energy technologies;Balachandra P;Renewable Energy,2010
3. S.R. Bull, Renewable energy today and tomorrow, Proceedings of the Ieee 89(8) (2001) 1216–1226.
4. B.P. Roberts, C. Sandberg, The Role of Energy Storage in Development of Smart Grids, Proceedings of the Ieee 99(6) (2011) 1139–1144.
5. Energy storage systems for automotive applications;Lukic SM;Ieee Transactions on Industrial Electronics,2008