Physicochemical properties of N-propyl-N-methylpyrrolidinium bis(fluorosulfonyl)imide for sodium metal battery applications.

Yoon, Hyungook, Zhu, Haijin, Hervault, Aziliz, Armand, Michel, MacFarlane, Douglas R and Forsyth, Maria 2014, Physicochemical properties of N-propyl-N-methylpyrrolidinium bis(fluorosulfonyl)imide for sodium metal battery applications., Physical Chemistry Chemical Physics, vol. 16, no. 24, pp. 12350-12355, doi: 10.1039/c4cp00365a.

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Title Physicochemical properties of N-propyl-N-methylpyrrolidinium bis(fluorosulfonyl)imide for sodium metal battery applications.
Author(s) Yoon, Hyungook
Zhu, HaijinORCID iD for Zhu, Haijin orcid.org/0000-0001-6352-7633
Hervault, Aziliz
Armand, Michel
MacFarlane, Douglas R
Forsyth, MariaORCID iD for Forsyth, Maria orcid.org/0000-0002-4273-8105
Journal name Physical Chemistry Chemical Physics
Volume number 16
Issue number 24
Start page 12350
End page 12355
Publisher Royal Society of Chemistry
Place of publication England
Publication date 2014
ISSN 1463-9084
Keyword(s) 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
Summary 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.
Language eng
DOI 10.1039/c4cp00365a
Field of Research 091205 Functional Materials
030604 Electrochemistry
Socio Economic Objective 850602 Energy Storage (excl. Hydrogen)
HERDC Research category C1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Copyright notice ©2014, Royal Society of Chemistry
Persistent URL http://hdl.handle.net/10536/DRO/DU:30068261

Document type: Journal Article
Collection: Institute for Frontier Materials
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