Extraordinarily Efficient Conduction in a Redox-Active Ionic Liquid
(2011) In ChemPhysChem 12(1). p.145-149- Abstract
- Iodine added to iodide-based ionic liquids leads to extraordinarily efficient charge transport, vastly exceeding that expected for such viscous systems. Using terahertz time-domain spectroscopy, in conjunction with dc conductivity, diffusivity and viscosity measurements we unravel the conductivity pathways in 1-methyl-3-propylimidazolium iodide melts. This study presents evidence of the Grotthuss mechanism as a significant contributor to the conductivity, and provides new insights into ion pairing processes as well as the formation of polyiodides. The terahertz and transport results are reunited in a model providing a quantitative description of the conduction by physical diffusion and the Grotthuss bond-exchange process. These novel... (More)
- Iodine added to iodide-based ionic liquids leads to extraordinarily efficient charge transport, vastly exceeding that expected for such viscous systems. Using terahertz time-domain spectroscopy, in conjunction with dc conductivity, diffusivity and viscosity measurements we unravel the conductivity pathways in 1-methyl-3-propylimidazolium iodide melts. This study presents evidence of the Grotthuss mechanism as a significant contributor to the conductivity, and provides new insights into ion pairing processes as well as the formation of polyiodides. The terahertz and transport results are reunited in a model providing a quantitative description of the conduction by physical diffusion and the Grotthuss bond-exchange process. These novel results are important for the fundamental understanding of conduction in molten salts and for applications where ionic liquids are used as charge-transporting media such as in batteries and dye-sensitized solar cells. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/1790807
- author
- Thorsmolle, Verner K. ; Rothenberger, Guido ; Topgaard, Daniel LU ; Brauer, Jan C. ; Kuang, Dai-Bin ; Zakeeruddin, Shaik M. ; Lindman, Björn LU ; Graetzel, Michael and Moser, Jacques-E.
- organization
- publishing date
- 2011
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- electrolyte, conducting materials, ion pairs, ionic liquids, terahertz, spectroscopy
- in
- ChemPhysChem
- volume
- 12
- issue
- 1
- pages
- 145 - 149
- publisher
- John Wiley & Sons Inc.
- external identifiers
-
- wos:000286441700024
- scopus:78651425238
- ISSN
- 1439-7641
- DOI
- 10.1002/cphc.201000819
- language
- English
- LU publication?
- yes
- id
- 8cf550f9-ebac-4cd1-b64b-e5fdc2a8a31e (old id 1790807)
- date added to LUP
- 2016-04-01 11:02:57
- date last changed
- 2022-04-20 08:39:55
@article{8cf550f9-ebac-4cd1-b64b-e5fdc2a8a31e, abstract = {{Iodine added to iodide-based ionic liquids leads to extraordinarily efficient charge transport, vastly exceeding that expected for such viscous systems. Using terahertz time-domain spectroscopy, in conjunction with dc conductivity, diffusivity and viscosity measurements we unravel the conductivity pathways in 1-methyl-3-propylimidazolium iodide melts. This study presents evidence of the Grotthuss mechanism as a significant contributor to the conductivity, and provides new insights into ion pairing processes as well as the formation of polyiodides. The terahertz and transport results are reunited in a model providing a quantitative description of the conduction by physical diffusion and the Grotthuss bond-exchange process. These novel results are important for the fundamental understanding of conduction in molten salts and for applications where ionic liquids are used as charge-transporting media such as in batteries and dye-sensitized solar cells.}}, author = {{Thorsmolle, Verner K. and Rothenberger, Guido and Topgaard, Daniel and Brauer, Jan C. and Kuang, Dai-Bin and Zakeeruddin, Shaik M. and Lindman, Björn and Graetzel, Michael and Moser, Jacques-E.}}, issn = {{1439-7641}}, keywords = {{electrolyte; conducting materials; ion pairs; ionic liquids; terahertz; spectroscopy}}, language = {{eng}}, number = {{1}}, pages = {{145--149}}, publisher = {{John Wiley & Sons Inc.}}, series = {{ChemPhysChem}}, title = {{Extraordinarily Efficient Conduction in a Redox-Active Ionic Liquid}}, url = {{http://dx.doi.org/10.1002/cphc.201000819}}, doi = {{10.1002/cphc.201000819}}, volume = {{12}}, year = {{2011}}, }