Physicochemical properties of N-propyl-N-methylpyrrolidinium bis(fluorosulfonyl)imide for sodium metal battery applications.
Data(s) |
01/01/2014
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Resumo |
The physicochemical properties of a range of NaNTf2 (or NaTFSI) salt concentrations in N-propyl-N-methylpyrrolidinium bis(fluorosulfonyl)imide (or C3mpyrFSI) ionic liquid were investigated by DSC, conductivity, cyclic voltammetry and diffusivity studies. Cyclic voltammetry indicated a stable sodium plating behavior with a current of 5 mA cm(-2) at 25 °C to 20 mA cm(-2) at 100 °C, along with high reversibility identifying this electrolyte as a possible candidate for sodium-ion or sodium metal battery applications. (23)Na NMR chemical shifts and spectral linewidths (FWHM) indicate a complex coordination of the Na(+) ion which is dependent on both temperature and salt concentration with an apparently stronger coordination to the NTf2 anion upon increasing the NaNTf2 concentration. Temperature dependent PFG-NMR diffusion measurements show that both FSI and NTf2 have a comparable behaviour although the smaller FSI anion is more diffusive. |
Identificador | |
Idioma(s) |
eng |
Publicador |
Royal Society of Chemistry |
Relação |
http://dro.deakin.edu.au/eserv/DU:30068261/t123721-11-Yoon-H-physicochemical-proper.pdf http://www.dx.doi.org/10.1039/c4cp00365a http://www.ncbi.nlm.nih.gov/pubmed/24824026 |
Direitos |
2014, Royal Society of Chemistry |
Palavras-Chave | #Science & Technology #Physical Sciences #Chemistry, Physical #Physics, Atomic, Molecular & Chemical #Chemistry #Physics #TEMPERATURE IONIC LIQUID #ENERGY-STORAGE #SECONDARY BATTERIES #GRAPHITE-ELECTRODES #LITHIUM #ELECTROLYTES #CONDUCTIVITY #VISCOSITY #BEHAVIOR #CATHODE |
Tipo |
Journal Article |