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Ionic Liquid as an Effective Additive for Rechargeable Magnesium Batteries

Journal Article · · Journal of the Electrochemical Society
DOI:https://doi.org/10.1149/2.1551704jes· OSTI ID:1373600

Here, the effect of the addition of an ionic liquid DEME•TFSI to an electrolyte solution of Mg(HMDS)2-MgCl2 in THF was studied electrochemically and spectroscopically. Reversible magnesium deposition/dissolution was achieved with the DEME•TFSI-modified electrolyte. This electrolyte shows higher ionic conductivity, and a linear relationship was observed between the ionic conductivity and the concentration of DEME•TFSI in THF solution of Mg(HMDS)2-MgCl2. Mg-Mo6S8 coin cells have also been successfully cycled using Mg(HMDS)2-MgCl2 electrolyte with the addition of DEME•TFSI. Raman and NMR spectroscopy suggest that DEME•TFSI facilitates magnesium deposition/dissolution by improving ionic conductivity of the electrolyte.

Research Organization:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22), Joint Center for Energy Storage Research (JCESR)
Grant/Contract Number:
AC02-06CH11357
OSTI ID:
1373600
Journal Information:
Journal of the Electrochemical Society, Journal Name: Journal of the Electrochemical Society Journal Issue: 4 Vol. 164; ISSN 0013-4651
Publisher:
The Electrochemical SocietyCopyright Statement
Country of Publication:
United States
Language:
English

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Cited By (4)

Mg Cathode Materials and Electrolytes for Rechargeable Mg Batteries: A Review journal January 2019
Rechargeable Magnesium Batteries using Conversion-Type Cathodes: A Perspective and Minireview journal July 2018
Strategic combination of Grignard reagents and allyl-functionalized ionic liquids as an advanced electrolyte for rechargeable magnesium batteries journal January 2018
Novel and versatile room temperature ionic liquids for energy storage journal January 2019

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