期刊
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
卷 17, 期 6, 页码 4656-4663出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c4cp05333h
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资金
- ARC (Australian Research Council)
- CSIRO's Energy Transformed National Research Flagship
- Australian Research Council under the Australian Laureate Fellowship scheme
Electrolytes based on bis(fluorosulfonyl) imide (FSI) with a range of LiFSI salt concentrations were characterized using physical property measurements, as well as NMR, FT-IR and Raman spectroscopy. Different from the behavior at lower concentrations, the FSI electrolyte containing 1:1 salt to IL mole ratio showed less deviation from the KCl line in the Walden plot, suggesting greater ionic dissociation. Diffusion measurements show higher mobility of lithium ions compared to the other ions, which suggests that the partial conductivity of Li+ is higher at this higher composition. Changes in the FT-IR and Raman peaks indicate that the cis-FSI conformation is preferred with increasing Li salt concentration.
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