Anisotropic MRI contrast reveals enhanced ionic transport in plastic crystals

Romanenko,K, Jin,L, Madsen,LA, Pringle,JM, O'Dell,LA and Forsyth,M 2014, Anisotropic MRI contrast reveals enhanced ionic transport in plastic crystals, Journal of the American chemical society, vol. 136, no. 44, pp. 15638-15645, doi: 10.1021/ja508290z.

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Title Anisotropic MRI contrast reveals enhanced ionic transport in plastic crystals
Author(s) Romanenko,K
Pringle,JMORCID iD for Pringle,JM
O'Dell,LAORCID iD for O'Dell,LA
Forsyth,MORCID iD for Forsyth,M
Journal name Journal of the American chemical society
Volume number 136
Issue number 44
Start page 15638
End page 15645
Publisher American Chemical Society
Place of publication Washington, DC
Publication date 2014-11-05
ISSN 1520-5126
Keyword(s) Science & Technology
Physical Sciences
Chemistry, Multidisciplinary
Summary Organic ionic plastic crystals (OIPCs) are attractive as solid-state electrolytes for electrochemical devices such as lithium-ion batteries and solar and fuel cells. OIPCs offer high ionic conductivity, nonflammability, and versatility of molecular design. Nevertheless, intrinsic ion transport behavior of OIPCs is not fully understood, and their measured properties depend heavily on thermal history. Solid-state magnetic resonance imaging experiments reveal a striking image contrast anisotropy sensitive to the orientation of grain boundaries in polycrystalline OIPCs. Probing triethyl(methyl)phosphonium bis(fluorosulfonyl)imide (P1222FSI) samples with different thermal history demonstrates vast variations in microcrystallite alignment. Upon slow cooling from the melt, microcrystallites exhibit a preferred orientation throughout the entire sample, leading to an order of magnitude increase in conductivity as probed using impedance spectroscopy. This investigation describes both a new conceptual window and a new characterization method for understanding polycrystalline domain structure and transport in plastic crystals and other solid-state conductors.
Language eng
DOI 10.1021/ja508290z
Field of Research 030604 Electrochemistry
091205 Functional Materials
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
Grant ID FL110100013
Copyright notice ©2014, American Chemical Society
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Document type: Journal Article
Collections: Institute for Frontier Materials
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