Nonlinear ion transport in the supercooled ionic liquid 1-hexyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide: Frequency dependence of third-order and fifth-order conductivity coefficients

2015 ◽  
Vol 142 (6) ◽  
pp. 064505 ◽  
Author(s):  
L. N. Patro ◽  
O. Burghaus ◽  
B. Roling
Keyword(s):  
Ionic Liquid ◽  
Ion Transport ◽  
Frequency Dependence ◽  
Third Order ◽  
Nonlinear Ion Transport ◽  
Fifth Order

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.

Ion transport and relaxation in phosphonium poly(ionic liquid) homo‐ and co‐polymers

2021 ◽  
Author(s):  
Palash Banerjee ◽  
Pulak Pal ◽  
Aswini Ghosh ◽  
Tarun K. Mandal
Keyword(s):  
Ionic Liquid ◽  
Ion Transport ◽  
Poly Ionic Liquid

Ion transport properties of ionic liquid based gel electrolytes

2012 ◽  
Vol 60 ◽  
pp. 366-374 ◽  
Author(s):  
S.S. Sekhon ◽  
D.P. Kaur ◽  
J.-S. Park ◽  
K. Yamada
Keyword(s):  
Ionic Liquid ◽  
Ion Transport ◽  
Transport Properties ◽  
Gel Electrolytes

Frequency dependence of third-order nonlinear susceptibilities in polyarylenevinylene thin films

1992 ◽  
Vol 49 (1-3) ◽  
pp. 131-139 ◽  
Author(s):  
Hideyuki Murata ◽  
Noriyuki Takada ◽  
Tetsuo Tsutsui ◽  
Shogo Saito ◽  
Takashi Kurihara ◽  
...  
Keyword(s):  
Thin Films ◽  
Frequency Dependence ◽  
Third Order

scholarly journals Co-Poly(ionic liquid) Films via Anion Exchange for the Continuous Tunability of Ion Transport and Wettability

ACS Omega ◽  
2018 ◽  
Vol 3 (11) ◽  
pp. 16158-16164 ◽  
Author(s):  
Ian Njoroge ◽  
Brandon W. Bout ◽  
Maxwell W. Matson ◽  
Paul E. Laibinis ◽  
G. Kane Jennings
Keyword(s):  
Ionic Liquid ◽  
Ion Transport ◽  
Anion Exchange ◽  
Liquid Films ◽  
Poly Ionic Liquid ◽  
Continuous Tunability

scholarly journals Design and Analysis of a Repetitive Current Controller for a Single-Phase Bridgeless SEPIC PFC Converter

Energies ◽  
2018 ◽  
Vol 12 (1) ◽  
pp. 131 ◽  
Author(s):  
Jinwoo Kim ◽  
Sanghun Han ◽  
Wontae Cho ◽  
Younghoon Cho ◽  
Hyunsoo Koh
Keyword(s):  
Controller Design ◽  
Harmonic Distortion ◽  
Input Current ◽  
Order Model ◽  
Third Order ◽  
Current Controller ◽  
The Stability ◽  
Small Signal Modeling ◽  
Fifth Order ◽  
Repetitive Controller

This paper studies a repetitive controller design scheme for a bridgeless single-ended primary inductor converter (SEPIC) power factor correction (PFC) converter to mitigate input current distortions. A small signal modeling of the converter is performed by a fifth-order model. Since the fifth-order model is complex to be applied in designing a current controller, the model is approximated to a third-order model. Using the third-order model, the repetitive controller is designed to reduce the input current distortion. Then, the stability of the repetitive controller is verified with an error transfer function. The proposed controller performance is validated by simulation, and the experiment results show that the input current total harmonic distortion (THD) is improved by applying the proposed controller for an 800 W bridgeless SEPIC PFC converter prototype.

Non-trivial network driven modifications of ion transport in an ionic liquid confined inside a polymer system

2016 ◽  
Vol 1 (4) ◽  
pp. 391-401 ◽  
Author(s):  
Sudeshna Sen ◽  
Sneha Malunavar ◽  
Dhanya Radhakrishnan ◽  
Chandrabhas Narayana ◽  
Priscilla Soudant ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Ion Transport ◽  
Transport Mechanism ◽  
Polymer System ◽  
Gel Electrolyte ◽  
System P

The chemical specificities of a polymer in a gel electrolyte comprising of an ionic liquid confined inside a polymer system governs in a nontrivial manner the ion transport mechanism.

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