10.1021/acsomega.0c01565.s001
Kajari Chatterjee
Kajari
Chatterjee
Anil D. Pathak
Anil D.
Pathak
Kisor Kumar Sahu
Kisor Kumar
Sahu
Akhilesh Kumar Singh
Akhilesh Kumar
Singh
New Thiourea-Based Ionic Liquid as an Electrolyte
Additive to Improve Cell Safety and Enhance Electrochemical Performance
in Lithium-Ion Batteries
American Chemical Society
2020
LIB
electrolyte
lithium nickel cobalt manganese oxi...
additive
di-methyl carbonate mixtures
Enhance Electrochemical Performance
imidazole -3-ium hexafluorophosphate
batterie
NMC
performance
ethylene carbonate
IL
novel thiourea-based room temperature
2020-06-30 00:30:39
Journal contribution
https://acs.figshare.com/articles/journal_contribution/New_Thiourea-Based_Ionic_Liquid_as_an_Electrolyte_Additive_to_Improve_Cell_Safety_and_Enhance_Electrochemical_Performance_in_Lithium-Ion_Batteries/12585373
Our society is critically
dependent on lithium-ion batteries (LIBs)
as a power source for portable electronic gadgets. One of the major
problems with these batteries is the degradation of the materials
inside them. In addition to the reduced cell life, building-up of
these degraded products inside the cells is very detrimental to the
safe operation. Herein, we report the synthesis and characterization
of a novel thiourea-based room temperature ionic liquid (IL), 3-heptyl-1-(3-(3-heptyl-3-phenylthioureido)propyl)-1<i>H</i>-imidazole-3-ium hexafluorophosphate. Its electrochemical
and thermal properties including transport phenomena have been studied.
It is proposed to be used as a nominal additive to commercially used
electrolytes, ethylene carbonate and di-methyl carbonate mixtures.
The comparative performance characteristics of the LIBs in the presence
and the absence of this IL additive have been demonstrated with a
traditional lithium nickel cobalt manganese oxide cathode (NMC111),
a graphite anode, and an ethylene carbonate and di-methyl carbonate
(1:1, v/v) electrolyte. It is further demonstrated that use of this
electrolyte additive in batteries helps to address some of the major
concerns of the conventional electrolytes such as safety issues and
cycling performance as well as coulombic efficiency with enhanced
discharge capacities.