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Effect of a novel amphipathic ionic liquid on lithium deposition in gel polymer electrolytes

Title
Effect of a novel amphipathic ionic liquid on lithium deposition in gel polymer electrolytes
Author
김동원
Keywords
Dimeric ionic liquid; Gel polymer electrolyte; Ionic conductivity; Interfacial resistance; Lithium dendrite; AIR BATTERIES; LI; ELECTRODES; BEHAVIOR; DENSITY; METAL; MODEL; SALT
Issue Date
2011-08
Publisher
PERGAMON-ELSEVIER SCIENCE LTD, THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
Citation
In Electrochimica Acta 2011 56(21):7249-7255
Abstract
A novel dimeric ionic liquid based on imidazolium cation and bis(trifluoromethanesulfonyl) imide (TFSI) anion has been synthesized through a metathesis reaction. its chemical shift values and thermal properties are identified via I H nuclear magnetic resonance (NMR) imaging and differential scanning calorimetry (DSC). The effect of the synthesized dimeric ionic liquid on the interfacial resistance of gel polymer electrolytes is described. Differences in the SEM images of lithium electrodes after lithium deposition with and without the 1,1'-pentyl-bis(2,3-dimethylimidazolium) bis(trifluoromethane-sulfonyl)imide (PDMITFSI) ionic liquid in gel polymer electrolytes are clearly discernible. This occurs because the PDMITFSI ionic liquid with hydrophobic moieties and polar groups modulates lithium deposit pathways onto the lithium metal anode. Moreover, high anodic stability for a gel polymer electrolyte with the PDMITFSI ionic liquid was clearly observed. (C) 2011 Elsevier Ltd. All rights reserved.
URI
https://www.sciencedirect.com/science/article/pii/S0013468611009443?via%3Dihubhttp://hdl.handle.net/20.500.11754/36111
ISSN
0013-4686
DOI
10.1016/j.electacta.2011.06.058
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > CHEMICAL ENGINEERING(화학공학과) > Articles
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