In situ MRI of operating solid-state Lithium metal cells based on ionic plastic crystal electrolytes

Romanenko, Konstantin, Jin, Liyu, Howlett, Patrick and Forsyth, Maria 2016, In situ MRI of operating solid-state Lithium metal cells based on ionic plastic crystal electrolytes, Chemistry of materials, vol. 28, no. 8, pp. 2844-2851, doi: 10.1021/acs.chemmater.6b00797.

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Title In situ MRI of operating solid-state Lithium metal cells based on ionic plastic crystal electrolytes
Author(s) Romanenko, Konstantin
Jin, Liyu
Howlett, PatrickORCID iD for Howlett, Patrick
Forsyth, MariaORCID iD for Forsyth, Maria
Journal name Chemistry of materials
Volume number 28
Issue number 8
Start page 2844
End page 2851
Total pages 8
Publisher American Chemical Society
Place of publication Washington, D.C.
Publication date 2016
ISSN 0897-4756
Keyword(s) Science & Technology
Physical Sciences
Chemistry, Physical
Materials Science, Multidisciplinary
Materials Science
Summary Solid-state ion conductors based on organic ionic plastic crystals (OIPCs) are a promising alternative to conventional liquid electrolytes in lithium battery applications. The OIPC-based electrolytes are safe (nonflammable) and flexible in terms of design and operating conditions. Magnetic resonance imaging (MRI) is a powerful noninvasive method enabling visualization of various chemical phenomena. Here, we report a first quantitative in situ MRI study of operating solid-state lithium cells. Lithium ion transfer into the OIPC matrix during the ongoing discharge of the anode results in partial liquefaction of the electrolyte at the metal interface. The developed liquid component enhances the ion transport across the interface and overall battery performance. Displacement of the liquefaction front is accompanied by a faster Li transfer through the grain boundaries and depletion at the cathode. The demonstrated solid-liquid hybrid properties, inherent in many OIPCs, combine benefits of highly conductive ionic liquids with safety and flexibility of solids.
Language eng
DOI 10.1021/acs.chemmater.6b00797
Field of Research 030604 Electrochemistry
091205 Functional Materials
03 Chemical Sciences
09 Engineering
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 LE11010014
Copyright notice ©2016, ACS
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