Transport properties in two pyrrolidinium-based protic ionic liquids as determined by conductivity, viscosity and NMR self-diffusion measurements

2010 ◽  
Vol 299 (2) ◽  
pp. 229-237 ◽  
Author(s):  
Mériem Anouti ◽  
Patrice Porion ◽  
Catherine Brigouleix ◽  
Hervé Galiano ◽  
Daniel Lemordant
Keyword(s):  
Ionic Liquids ◽  
Transport Properties ◽  
Protic Ionic Liquids ◽  
Self Diffusion

Rheological and Ionic Transport Properties of Nanocomposite Electrolytes Based on Protic Ionic Liquids and Silica Nanoparticles

Langmuir ◽  
2019 ◽  
Vol 36 (1) ◽  
pp. 148-158 ◽  
Author(s):  
Mayeesha Marium ◽  
Mahfuzul Hoque ◽  
Muhammed Shah Miran ◽  
Morgan L. Thomas ◽  
Izuru Kawamura ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Transport Properties ◽  
Silica Nanoparticles ◽  
Ionic Transport ◽  
Protic Ionic Liquids ◽  
Nanocomposite Electrolytes

scholarly journals Liquid Structures and Transport Properties of Lithium Bis(fluorosulfonyl)amide/Glyme Solvate Ionic Liquids for Lithium Batteries

2019 ◽  
Vol 72 (2) ◽  
pp. 70 ◽  
Author(s):  
Shoshi Terada ◽  
Kohei Ikeda ◽  
Kazuhide Ueno ◽  
Kaoru Dokko ◽  
Masayoshi Watanabe
Keyword(s):  
Ionic Liquids ◽  
Transport Properties ◽  
Lithium Batteries ◽  
Diffusion Coefficients ◽  
The Self ◽  
Metal Anode ◽  
Self Diffusion ◽  
Molar Ratios ◽  
Li Metal Anode ◽  
A Current

The liquid structures and transport properties of electrolytes composed of lithium bis(fluorosulfonyl)amide (Li[FSA]) and glyme (triglyme (G3) or tetraglyme (G4)) were investigated. Raman spectroscopy indicated that the 1:1 mixtures of Li[FSA] and glyme (G3 or G4) are solvate ionic liquids (SILs) comprising a cationic [Li(glyme)]+ complex and the [FSA]− anion. In Li[FSA]-excess liquids with Li[FSA]/glyme molar ratios greater than 1, anionic Lix[FSA]y(y–x)– complexes were formed in addition to the cationic [Li(glyme)]+ complex. Pulsed field gradient NMR measurements revealed that the self-diffusion coefficients of Li+ (DLi) and glyme (Dglyme) are identical in the Li[FSA]/glyme=1 liquid, suggesting that Li+ and glyme diffuse together and that a long-lived cationic [Li(glyme)]+ complex is formed in the SIL. The ratio of the self-diffusion coefficients of [FSA]− and Li+, DFSA/DLi, was essentially constant at ~1.1–1.3 in the Li[FSA]/glyme<1 liquid. However, DFSA/DLi increased rapidly as the amount of Li[FSA] increased in the Li[FSA]/glyme>1 liquid, indicating that the ion transport mechanism in the electrolyte changed at the composition of Li[FSA]/glyme=1. The oxidative stability of the electrolytes was enhanced as the Li[FSA] concentration increased. Furthermore, Al corrosion was suppressed in the electrolytes for which Li[FSA]/glyme>1. A battery consisting of a Li metal anode, a LiNi1/3Mn1/3Co1/3O2 cathode, and Li[FSA]/G3=2 electrolyte exhibited a discharge capacity of 105mAhg−1 at a current density of 1.3mAcm−2, regardless of its low ionic conductivity of 0.2mScm−1.

NMR Relaxation and Self-Diffusion Study at High and Low Magnetic Fields of Ionic Association in Protic Ionic Liquids

2010 ◽  
Vol 114 (35) ◽  
pp. 11436-11443 ◽  
Author(s):  
Geoffrey L. Burrell ◽  
Iko M. Burgar ◽  
Qingxia Gong ◽  
Noel F. Dunlop ◽  
Frances Separovic
Keyword(s):  
Ionic Liquids ◽  
Magnetic Fields ◽  
Nmr Relaxation ◽  
Ionic Association ◽  
Diffusion Study ◽  
Protic Ionic Liquids ◽  
Self Diffusion

NMR Characterization of Ionicity and Transport Properties for a Series of Diethylmethylamine Based Protic Ionic Liquids

2016 ◽  
Vol 120 (18) ◽  
pp. 4279-4285 ◽  
Author(s):  
Stephen K. Davidowski ◽  
Forrest Thompson ◽  
Wei Huang ◽  
Mohammad Hasani ◽  
Samrat A. Amin ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Transport Properties ◽  
Protic Ionic Liquids ◽  
Nmr Characterization

DFT Study on the Chemical Absorption Mechanism of CO2 in Diamino Protic Ionic Liquids

2021 ◽  
Vol 125 (5) ◽  
pp. 1416-1428
Author(s):  
Jing Ma ◽  
Yutong Wang ◽  
Xueqing Yang ◽  
Mingxuan Zhu ◽  
Baohe Wang
Keyword(s):  
Ionic Liquids ◽  
Dft Study ◽  
Protic Ionic Liquids ◽  
Absorption Mechanism ◽  
Chemical Absorption

scholarly journals The Synthesis of Poly(Vinyl Alcohol) Grafted with Fluorinated Protic Ionic Liquids Containing Sulfo Functional Groups

Molecules ◽  
2021 ◽  
Vol 26 (14) ◽  
pp. 4158
Author(s):  
Patrycja Glińska ◽  
Andrzej Wolan ◽  
Wojciech Kujawski ◽  
Edyta Rynkowska ◽  
Joanna Kujawa
Keyword(s):  
Ionic Liquids ◽  
Vinyl Alcohol ◽  
Proton Exchange ◽  
Polymer Materials ◽  
Polymerization Reaction ◽  
Poly Vinyl Alcohol ◽  
Hydroxyl Groups ◽  
Protic Ionic Liquids ◽  
Synthesis Route ◽  
Sulfo Groups

There has been an ongoing need to develop polymer materials with increased performance as proton exchange membranes (PEMs) for middle- and high-temperature fuel cells. Poly(vinyl alcohol) (PVA) is a highly hydrophilic and chemically stable polymer bearing hydroxyl groups, which can be further altered. Protic ionic liquids (proticILs) have been found to be an effective modifying polymer agent used as a proton carrier providing PEMs’ desirable proton conductivity at high temperatures and under anhydrous conditions. In this study, the novel synthesis route of PVA grafted with fluorinated protic ionic liquids bearing sulfo groups (–SO3H) was elaborated. The polymer functionalization with fluorinated proticILs was achieved by the following approaches: (i) the PVA acylation and subsequent reaction with fluorinated sultones and (ii) free-radical polymerization reaction of vinyl acetate derivatives modified with 1-methylimidazole and sultones. These modifications resulted in the PVA being chemically modified with ionic liquids of protic character. The successfully grafted PVA has been characterized using 1H, 19F, and 13C-NMR and FTIR-ATR. The presented synthesis route is a novel approach to PVA functionalization with imidazole-based fluorinated ionic liquids with sulfo groups.

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