This title appears in the Scientific Report :
2023
Please use the identifier:
http://dx.doi.org/10.1039/D3TA01217D in citations.
Please use the identifier: http://dx.doi.org/10.34734/FZJ-2023-05449 in citations.
Ionic conductivity, viscosity, and self-diffusion coefficients of novel imidazole salts for lithium-ion battery electrolytes
Ionic conductivity, viscosity, and self-diffusion coefficients of novel imidazole salts for lithium-ion battery electrolytes
Lithium-ion battery performance and longevity depend critically on the conducting salt utilized in the electrolyte.With new avenues for multifunctional integration and optimization of functional properties, conducting saltsbeyond lithium hexafluorophosphate (LiPF6) need to be studied. Herein we eluc...
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Personal Name(s): | Szczęsna-Chrzan, Anna |
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Vogler, Monika / Yan, Peng / Żukowska, Grażyna Zofia / Wölke, Christian / Ostrowska, Agnieszka / Szymańska, Sara / Marcinek, Marek / Winter, Martin / Cekic-Laskovic, Isidora (Corresponding author) / Wieczorek, Władysław (Corresponding author) / Stein, Helge S. (Corresponding author) | |
Contributing Institute: |
Helmholtz-Institut Münster Ionenleiter für Energiespeicher; IEK-12 |
Published in: | Journal of materials chemistry / A, 11 (2023) 25, S. 13483 - 13492 |
Imprint: |
London [u.a.]
RSC
2023
|
DOI: |
10.1039/D3TA01217D |
DOI: |
10.34734/FZJ-2023-05449 |
Document Type: |
Journal Article |
Research Program: |
BATTERY 2030+ large-scale research initiative: At the heart of a connected green society Battery Interface Genome - Materials Acceleration Platform Fundamentals and Materials |
Link: |
OpenAccess |
Publikationsportal JuSER |
Please use the identifier: http://dx.doi.org/10.34734/FZJ-2023-05449 in citations.
Lithium-ion battery performance and longevity depend critically on the conducting salt utilized in the electrolyte.With new avenues for multifunctional integration and optimization of functional properties, conducting saltsbeyond lithium hexafluorophosphate (LiPF6) need to be studied. Herein we elucidate on viscosity, ionicity,anion self-diffusion and ionic conductivity through variation of the length of the perfluoroalkyl side chainpresent in the anions of the used lithium imidazole salts. Specifically, we study LiPF6 in comparison withlithium 4,5-dicyano-2-(trifluoromethyl)imidazolide (LiTDI), lithium 4,5-dicyano-2-(pentafluoroethyl)imidazolide (LiPDI), and lithium 4,5-dicyano-2-(n-heptafluoropropyl)imidazolide (LiHDI). We find that the ionmobility of LiPF6 depends the least on viscosity and its ionicity is the highest among the electrolytesinvestigated here. LiTDI shows the strongest correlation between ion mobility and viscosity and the lowestionicity. LiPDI and LiHDI range between these two regarding their ionicity and the correlation of mobility withviscosity. The previously rarely studied anion self-diffusion coefficients exhibit a strong correlation withviscosity as it was to be expected. Differences between the LiTDI, LiPDI and LiHDI salts are minute. |