scholarly journals LiFePO4/Mesoporous Carbon Hybrid Supercapacitor Based on LiTFSI/Imidazolium Ionic Liquid Electrolyte

2018 ◽  
Vol 122 (3) ◽  
pp. 1456-1465 ◽  
Author(s):  
Paulo F. R. Ortega ◽  
Garbas A. dos Santos Junior ◽  
Luciano A. Montoro ◽  
Glaura G. Silva ◽  
Clara Blanco ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Mesoporous Carbon ◽  
Liquid Electrolyte ◽  
Hybrid Supercapacitor ◽  
Imidazolium Ionic Liquid ◽  
Ionic Liquid Electrolyte

A safe Li–Se battery in an ionic liquid-based electrolyte operating at 25–70 °C by using a N,S,O tri-doped mesoporous carbon host material

2020 ◽  
Vol 4 (5) ◽  
pp. 2322-2332 ◽  
Author(s):  
Tiago C. Mendes ◽  
Cuong Nguyen ◽  
Anders J. Barlow ◽  
Pavel V. Cherepanov ◽  
Maria Forsyth ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Mesoporous Carbon ◽  
Liquid Electrolyte ◽  
Host Material ◽  
Thermally Stable ◽  
Carbon Cathode ◽  
Ionic Liquid Electrolyte

A Li–Se battery based on a Se-infused N,S,O tri-doped mesoporous carbon cathode is presented. A compatible and tunable ionic liquid electrolyte is introduced and a safer and thermally stable Li–Se battery that can operate up to 70 °C is demonstrated.

scholarly journals Electrode Properties in Mixed Imidazolium Ionic Liquid Electrolyte

2010 ◽  
Vol 78 (5) ◽  
pp. 370-374 ◽  
Author(s):  
Minato EGASHIRA ◽  
Akinori KANETOMO ◽  
Nobuko YOSHIMOTO ◽  
Masayuki MORITA
Keyword(s):  
Ionic Liquid ◽  
Liquid Electrolyte ◽  
Imidazolium Ionic Liquid ◽  
Ionic Liquid Electrolyte

High-performance Li-Ion hybrid supercapacitor based on LiMn2O4 in ionic liquid electrolyte

2019 ◽  
Vol 325 ◽  
pp. 134900 ◽  
Author(s):  
Garbas A. dos Santos Junior ◽  
Victor D.S. Fortunato ◽  
Glaura G. Silva ◽  
Paulo F.R. Ortega ◽  
Rodrigo L. Lavall
Keyword(s):  
Ionic Liquid ◽  
High Performance ◽  
Liquid Electrolyte ◽  
Hybrid Supercapacitor ◽  
Ionic Liquid Electrolyte ◽  
Li Ion

Enhanced Ion Transport in an Ether Aided Super Concentrated Ionic Liquid Electrolyte for Long-Life Practical Lithium Metal Battery Applications

2020 ◽  
Author(s):  
Urbi Pal ◽  
Fangfang Chen ◽  
Derick Gyabang ◽  
Thushan Pathirana ◽  
Binayak Roy ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Ion Transport ◽  
Current Density ◽  
Coulombic Efficiency ◽  
High Energy ◽  
Liquid Electrolyte ◽  
High Mass ◽  
Lithium Metal ◽  
Ionic Liquid Electrolyte ◽  
Lithium Metal Battery

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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