You are not logged in.

Elucidation of transport mechanism and enhanced alkali ion transference numbers in mixed alkali metal-organic ionic molten salts

Chen, Fangfang and Forsyth, Maria 2016, Elucidation of transport mechanism and enhanced alkali ion transference numbers in mixed alkali metal-organic ionic molten salts, Physical chemistry chemical physics, vol. 18, no. 28, pp. 19336-19344, doi: 10.1039/c6cp01411a.

Attached Files
Name Description MIMEType Size Downloads

Title Elucidation of transport mechanism and enhanced alkali ion transference numbers in mixed alkali metal-organic ionic molten salts
Author(s) Chen, Fangfang
Forsyth, MariaORCID iD for Forsyth, Maria orcid.org/0000-0002-4273-8105
Journal name Physical chemistry chemical physics
Volume number 18
Issue number 28
Start page 19336
End page 19344
Total pages 9
Publisher Royal Society of Chemistry
Place of publication Cambridge, Eng.
Publication date 2016-07-28
ISSN 1463-9084
Summary Mixed salts of Ionic Liquids (ILs) and alkali metal salts, developed as electrolytes for lithium and sodium batteries, have shown a remarkable ability to facilitate high rate capability for lithium and sodium electrochemical cycling. It has been suggested that this may be due to a high alkali metal ion transference number at concentrations approaching 50 mol% Li(+) or Na(+), relative to lower concentrations. Computational investigations for two IL systems illustrate the formation of extended alkali-anion aggregates as the alkali metal ion concentration increases. This tends to favor the diffusion of alkali metal ions compared with other ionic species in electrolyte solutions; behavior that has recently been reported for Li(+) in a phosphonium ionic liquid, thus an increasing alkali transference number. The mechanism of alkali metal ion diffusion via this extended coordination environment present at high concentrations is explained and compared to the dynamics at lower concentrations. Heterogeneous alkali metal ion dynamics are also evident and, somewhat counter-intuitively, it appears that the faster ions are those that are generally found clustered with the anions. Furthermore these fast alkali metal ions appear to correlate with fastest ionic liquid solvent ions.
Language eng
DOI 10.1039/c6cp01411a
Field of Research 030304 Physical Chemistry of Materials
02 Physical Sciences
03 Chemical Sciences
Socio Economic Objective 850604 Energy Transmission and Distribution (excl. Hydrogen)
HERDC Research category C1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Grant ID FL110100013
Copyright notice ©2016, Royal Society of Chemistry
Persistent URL http://hdl.handle.net/10536/DRO/DU:30084983

Document type: Journal Article
Collection: Institute for Frontier Materials
Connect to link resolver
 
Unless expressly stated otherwise, the copyright for items in DRO is owned by the author, with all rights reserved.

Versions
Version Filter Type
Citation counts: TR Web of Science Citation Count  Cited 7 times in TR Web of Science
Scopus Citation Count Cited 7 times in Scopus
Google Scholar Search Google Scholar
Access Statistics: 118 Abstract Views, 1 File Downloads  -  Detailed Statistics
Created: Tue, 19 Jul 2016, 12:40:56 EST

Every reasonable effort has been made to ensure that permission has been obtained for items included in DRO. If you believe that your rights have been infringed by this repository, please contact drosupport@deakin.edu.au.