Electrochemical and structural characterization of Mg ion intercalation into RuO2 using an ionic liquid electrolyte

2012 ◽  
Vol 79 ◽  
pp. 170-174 ◽  
Author(s):  
Thomas E. Sutto ◽  
Teresa T. Duncan
2014 ◽  
Vol 61 (27) ◽  
pp. 79-85 ◽  
Author(s):  
C. Cama ◽  
R. A. DiLeo ◽  
K. J. Takeuchi ◽  
A. C. Marschilok ◽  
E. S. Takeuchi

2014 ◽  
Vol 7 (10) ◽  
pp. 3412-3423 ◽  
Author(s):  
Sergej Rothermel ◽  
Paul Meister ◽  
Guido Schmuelling ◽  
Olga Fromm ◽  
Hinrich-W. Meyer ◽  
...  

We present highly promising results for the use of graphite as both electrodes in a “dual-carbon” cell. An ionic liquid-based electrolyte mixture allows stable and highly reversible ion intercalation/de-intercalation into/from the electrodes.


Proceedings ◽  
2019 ◽  
Vol 32 (1) ◽  
pp. 15
Author(s):  
Sheng Yong ◽  
Nicholas Hiller ◽  
Kai Yang ◽  
Stephen Beeby

This paper reports the design fabrication and characterization of a flexible supercapacitor fabricated in a single layer of polyester-cotton fabric. The fabric and flexible supercapacitors were implemented with spray coated inexpensive carbon electrodes and low hazardous ionic liquid electrolyte. The encapsulated devices demonstrated an area capacitance of 20.6 mF·cm−2.


2020 ◽  
Author(s):  
Urbi Pal ◽  
Fangfang Chen ◽  
Derick Gyabang ◽  
Thushan Pathirana ◽  
Binayak Roy ◽  
...  

We explore a novel ether aided superconcentrated ionic liquid electrolyte; a combination of ionic liquid, <i>N</i>-propyl-<i>N</i>-methylpyrrolidinium bis(fluorosulfonyl)imide (C<sub>3</sub>mpyrFSI) and ether solvent, <i>1,2</i> dimethoxy ethane (DME) with 3.2 mol/kg LiFSI salt, which offers an alternative ion-transport mechanism and improves the overall fluidity of the electrolyte. The molecular dynamics (MD) study reveals that the coordination environment of lithium in the ether aided ionic liquid system offers a coexistence of both the ether DME and FSI anion simultaneously and the absence of ‘free’, uncoordinated DME solvent. These structures lead to very fast kinetics and improved current density for lithium deposition-dissolution processes. Hence the electrolyte is used in a lithium metal battery against a high mass loading (~12 mg/cm<sup>2</sup>) LFP cathode which was cycled at a relatively high current rate of 1mA/cm<sup>2</sup> for 350 cycles without capacity fading and offered an overall coulombic efficiency of >99.8 %. Additionally, the rate performance demonstrated that this electrolyte is capable of passing current density as high as 7mA/cm<sup>2</sup> without any electrolytic decomposition and offers a superior capacity retention. We have also demonstrated an ‘anode free’ LFP-Cu cell which was cycled over 50 cycles and achieved an average coulombic efficiency of 98.74%. The coordination chemistry and (electro)chemical understanding as well as the excellent cycling stability collectively leads toward a breakthrough in realizing the practical applicability of this ether aided ionic liquid electrolytes in lithium metal battery applications, while delivering high energy density in a prototype cell.


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