Tin negative electrodes using an FSA-based ionic liquid electrolyte: improved performance of potassium secondary batteries

2020 ◽  
Vol 56 (17) ◽  
pp. 2538-2541 ◽  
Author(s):  
Takayuki Yamamoto ◽  
Toshiyuki Nohira
Keyword(s):  
Ionic Liquid ◽  
Liquid Electrolyte ◽  
Ionic Liquid Electrolyte ◽  
Negative Electrodes ◽  
Improved Performance

Tin negative electrodes exhibited improved performance in an FSA-based ionic liquid electrolyte for potassium secondary batteries.

CuP2 /C Composite Negative Electrodes for Sodium Secondary Batteries Operating at Room-to-Intermediate Temperatures Utilizing Ionic Liquid Electrolyte

2018 ◽  
Vol 5 (10) ◽  
pp. 1340-1344 ◽  
Author(s):  
Shubham Kaushik ◽  
Jinkwang Hwang ◽  
Kazuhiko Matsumoto ◽  
Yuta Sato ◽  
Rika Hagiwara
Keyword(s):  
Ionic Liquid ◽  
Liquid Electrolyte ◽  
Ionic Liquid Electrolyte ◽  
Negative Electrodes

Graphite-Silicon-Polyacrylate Negative Electrodes in Ionic Liquid Electrolyte for Safer Rechargeable Li-Ion Batteries

2011 ◽  
Vol 1 (5) ◽  
pp. 759-765 ◽  
Author(s):  
Naoaki Yabuuchi ◽  
Keiji Shimomura ◽  
Yukako Shimbe ◽  
Tomoaki Ozeki ◽  
Jin-Young Son ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Liquid Electrolyte ◽  
Li Ion Batteries ◽  
Ionic Liquid Electrolyte ◽  
Negative Electrodes ◽  
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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