scholarly journals Dependence of Anionic Species on Li/LiCoO2 Cell Performance Using Ionic Liquids composed of N,N-Diethyl-N-methyl-N-(2-methoxyethyl)ammonium

2008 ◽  
Keyword(s):  
Ionic Liquids ◽  
Cell Performance ◽  
Anionic Species

scholarly journals Mixed Chlorometallate Ionic Liquids as C4 Alkylation Catalysts: A Quantitative Study of Acceptor Properties

Catalysts ◽  
2018 ◽  
Vol 8 (11) ◽  
pp. 498
Author(s):  
Xiaoying Pang ◽  
Ying Liu ◽  
Juanfang Wang
Keyword(s):  
Ionic Liquids ◽  
Lewis Acidity ◽  
Alkylation Reaction ◽  
Triethylamine Hydrochloride ◽  
Metal Chlorides ◽  
Molar Ratios ◽  
Anionic Species ◽  
Triethylphosphine Oxide ◽  
The Relationship ◽  
Acceptor Numbers

The acceptor properties of mixed chlorometallate ionic liquids for isobutane-butene alkylation (C4 alkylation) reaction were studied. These ionic liquids were prepared by mixing metal chlorides with either triethylamine hydrochloride or 1-butyl-3-methylimidazolium chloride in various molar ratios. Using triethylphosphine oxide as a probe, Gutmann Acceptor Numbers (AN) of the catalysts were determined, and the Lewis acidity of mixed chlorometallate ionic liquids was quantitatively measured. Additionally, AN value was developed to determine the relationship between Lewis acidity and catalytic selectivity. The favorite AN value for the C4 alkylation reaction should be around 93.0. The [(C2H5)3NH]Cl–AlCl3−CuCl appears to be more Lewis acidity than that of [(C2H5)3NH]Cl–AlCl3. The correlation of the acceptor numbers to speciation of the mixed chlorometallate ionic liquids has also been investigated. [AlCl4]−, [Al2Cl7]−, and [MAlCl5]− (M = Cu, Ag) are the main anionic species of the mixed chlorometallate ILs. While the presence of [(C2H5)3N·M]+ cation always decreases the acidity of the [(C2H5)3NH]Cl−AlCl3−MCl ionic liquids.

Copolymers of ionic liquids with polymeric or metallocomplex chromophores for quasi-solid-state DSSC applications

RSC Advances ◽  
2016 ◽  
Vol 6 (10) ◽  
pp. 8256-8266 ◽  
Author(s):  
Panagiotis Giannopoulos ◽  
Aikaterini K. Andreopoulou ◽  
Charalampos Anastasopoulos ◽  
Dimitrios Raptis ◽  
Georgia Sfyri ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Solid State ◽  
Cell Performance ◽  
Hole Transporting ◽  
Ionic Nature

Polymeric and copolymeric ionic liquids were prepared and tested in quasi solid DSSCs as additives of a P3HT hole transporting layer. The morphology and the increased ionic nature of the blends played decisive roles on the cell performance.

Physicochemical Properties and Structures of Room Temperature Ionic Liquids. 1. Variation of Anionic Species

2004 ◽  
Vol 108 (42) ◽  
pp. 16593-16600 ◽  
Author(s):  
Hiroyuki Tokuda ◽  
Kikuko Hayamizu ◽  
Kunikazu Ishii ◽  
Md. Abu Bin Hasan Susan ◽  
Masayoshi Watanabe
Keyword(s):  
Ionic Liquids ◽  
Physicochemical Properties ◽  
Room Temperature ◽  
Room Temperature Ionic Liquids ◽  
Anionic Species

Temperature dependence of the electrode potential of a cobalt-based redox couple in ionic liquid electrolytes for thermal energy harvesting

2016 ◽  
Vol 190 ◽  
pp. 205-218 ◽  
Author(s):  
Jiangjing He ◽  
Danah Al-Masri ◽  
Douglas R. MacFarlane ◽  
Jennifer M. Pringle
Keyword(s):  
Ionic Liquids ◽  
Waste Heat ◽  
Thermal Response ◽  
Thermodynamic Quantity ◽  
Redox System ◽  
Cell Performance ◽  
Redox Couple ◽  
Seebeck Coefficients ◽  
A Cell ◽  
Current Densities

Increasing the application of technologies for harvesting waste heat could make a significant contribution to sustainable energy production. Thermoelectrochemical cells are one such emerging technology, where the thermal response of a redox couple in an electrolyte is used to generate a potential difference across a cell when a temperature gradient exists. The unique physical properties of ionic liquids make them ideal for application as electrolytes in these devices. One of the keys to utilizing these media in efficient thermoelectrochemical cells is achieving high Seebeck coefficients, Se: the thermodynamic quantity that determines the magnitude of the voltage achieved per unit temperature difference. Here, we report the Se and cell performance of a cobalt-based redox couple in a range of different ionic liquids, to investigate the influence of the nature of the IL on the thermodynamics and cell performance of the redox system. The results reported include the highest Se to-date for an IL-based electrolyte. The effect of diluting the different ILs with propylene carbonate is also reported, which results in a significant increase in the output powers and current densities of the device.

scholarly journals Effect of Counteranions on the Conformational Equilibrium of 1-Butyl-3-methylimidazolium-Based Ionic Liquids

2011 ◽  
Vol 2011 ◽  
pp. 1-5 ◽  
Author(s):  
Naohiro Hatano ◽  
Takahiro Takekiyo ◽  
Hiroshi Abe ◽  
Yukihiro Yoshimura
Keyword(s):  
Raman Spectroscopy ◽  
Ionic Liquids ◽  
Room Temperature ◽  
Conformational Equilibrium ◽  
Conformational Stability ◽  
Enthalpy Change ◽  
Room Temperature Ionic Liquids ◽  
Anion Effect ◽  
Anionic Species ◽  
Entropic Contribution

We have investigated the nonspherical anion effect on the trans-trans (TT) and gauche-trans (GT) equilibrium in pure 1-butyl-3-methylimidazolium ([bmim]+)-based room temperature ionic liquids (RTILs) by the Raman spectroscopy. The intensity ratio of the [bmim]+ cation in [bmim]+-based RTILs having nonspherical anions changes with nature of the anions. However, the enthalpy change of the [bmim]+ cation is approximately −1.0 kJ/mol for all [bmim]+-based RTILs used in this study and is independent of the anionic species. The present results indicate that the conformational stability of the [bmim]+ cation in [bmim]+-based RTILs including nonspherical anions is driven by the entropic contribution associated with the orientation and configuration of the [bmim]+ cation with respect to the counteranion.

Influence of Ionic Liquids in Quasi-Solid State Electrolyte on Dye-Sensitized Solar Cell Performance

2006 ◽  
Vol 462 (1) ◽  
pp. 75-81 ◽  
Author(s):  
Hyun-Jeong Lee ◽  
Jin-Kook Lee ◽  
Mi-Ra Kim ◽  
Won Suk Shin ◽  
Sung-Ho Jin ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Solar Cell ◽  
Solid State ◽  
Cell Performance ◽  
Dye Sensitized Solar Cell ◽  
Solar Cell Performance ◽  
Solid State Electrolyte ◽  
Dye Sensitized
Sign in / Sign up

Export Citation Format

Share Document