Novel ionic liquids and plastic crystals utilizing the cyanate anion

Janikowski, Judith; Forsyth, Craig M.; MacFarlane, Douglas R.; Pringle, Jennifer M.

doi:10.1039/c1jm14055h

Cited by 28 publications

(17 citation statements)

References 54 publications

(66 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…22 The mixture was stirred at room temperature for 24 h. Subsequently, ethanol and water were distilled off at 60 °C under reduced pressure. [P 66614 ][OCN] and [CCNmim][Tf 2 N] (CCNmim=1‐methyl‐3‐(2‐cyanoethyl)imidazolium) were prepared by the procedures reported by Pringle et al 32. and Carlisle et al.,33 respectively.…”

Section: Methodsmentioning

confidence: 99%

Tuning the Basicity of Cyano‐Containing Ionic Liquids to Improve SO₂ Capture through Cyano–Sulfur Interactions

Cui

Zhang

Zhou

et al. 2015

Chemistry A European J

View full text Add to dashboard Cite

A new approach has been developed to improve SO2 sorption by cyano-containing ionic liquids (ILs) through tuning the basicity of ILs and cyano-sulfur interaction. Several kinds of cyano-containing ILs with different basicity were designed, prepared, and used for SO2 capture. The interaction between these cyano-containing ILs and SO2 was investigated by FTIR and NMR methods. Spectroscopic investigations and quantum chemical calculations showed that dramatic effects on SO2 capacity originate from the basicity of the ILs and enhanced cyano-sulfur interaction. Furthermore, the captured SO2 was easy to release by heating or bubbling N2 through the ILs. This efficient and reversible process, achieved by tuning the basicity of ILs, is an excellent alternative to current technologies for SO2 capture.

show abstract

Section: Methodsmentioning

confidence: 99%

Tuning the Basicity of Cyano‐Containing Ionic Liquids to Improve SO₂ Capture through Cyano–Sulfur Interactions

Cui

Zhang

Zhou

et al. 2015

Chemistry A European J

View full text Add to dashboard Cite

show abstract

“…1). 33 Plastic crystals were formed with both imidazolium and pyrrolidinium cations and all showed relatively high solid state ionic conductivities; the highest for [C 33 A second CN-based anion, the dicyanomethanide (dcnm, Fig. 1), has also been utilised in OIPCs for the first time.…”

Section: Anionsmentioning

confidence: 99%

Recent progress in the development and use of organic ionic plastic crystal electrolytes

Pringle

2013

Phys. Chem. Chem. Phys.

Self Cite

191

219

View full text Add to dashboard Cite

Significant progress has been made recently in the development of Organic Ionic Plastic Crystals (OIPCs), a unique family of solid state electrolytes with applications in electrochemical devices such as lithium batteries and dye-sensitised solar cells. The negligible volatility of OIPCs renders them more suitable than molecular species for long-term device use, while the high thermal and electrochemical stability of many OIPCs fulfils an essential requirement for solid state electrolytes for many device applications. However, the complex mechanisms of conduction through these materials, both in their pure state and in the presence of a small amount of a second component (such as lithium salts to enable their use in lithium batteries) are still not fully understood. At the same time, the range of anions and cations utilised in the synthesis of plastic crystal phases continues to increase. This perspective concentrates on recent research into both fundamental and device-oriented aspects of these materials. Important fundamental understanding of the physical properties and transport mechanisms of different OIPCs has been achieved through use of techniques including variable temperature solid-state NMR and crystallographic analysis, as well as detailed molecular dynamics simulations. In parallel, the applicability of these materials as electrolytes for dye-sensitised solar cells and lithium batteries is being more widely demonstrated. The possibility of using OIPCs as solid state electrolytes for fuel cells is also discussed.

show abstract

“…1 202020201) ] + probably increases the asymmetry making it harder for the ions to pack together in an ordered fashion. 32 Changing the anion can also have an impact on the melting point of the IL. It is well known in the field that the [NTf 2 ] anion often tends to produce lower melting points.…”

Section: Physical and Thermal Propertiesmentioning

confidence: 99%

Chelating ionic liquids for reversible zinc electrochemistry

Kar

Winther‐Jensen

Forsyth

et al. 2013

Phys. Chem. Chem. Phys.

Self Cite

View full text Add to dashboard Cite

Advanced, high energy-density, metal-air rechargeable batteries, such as zinc-air, are of intense international interest due to their important role in energy storage applications such as electric and hybrid vehicles, and to their ability to deal with the intermittency of renewable energy sources such as solar and wind. Ionic liquids offer a number of ideal thermal and physical properties as potential electrolytes in such large-scale energy storage applications. We describe here the synthesis and characterisation of a family of novel "chelating" ILs designed to chelate and solubilize the zinc ions to create electrolytes for this type of battery. These are based on quaternary alkoxy alkyl ammonium cations of varying oligo-ether side chains and anions such as p-toluene sulfonate, bis(trifluoromethylsulfonyl)amide and dicyanoamides. This work shows that increasing the ether chain length in the cation from two to four oxygens can increase the ionic conductivity and reduce the melting point from 67 °C to 15 °C for the tosylate system. Changing the anion also plays a significant role in the nature of the zinc deposition electrochemistry. We show that zinc can be reversibly deposited from [N(222(20201))][NTf2] and [N(222(202020201))][NTf2] beginning at -1.4 V and -1.7 V vs. SHE, respectively, but not in the case of tosylate based ILs. This indicates that the [NTf2] is a weaker coordinating anion with the zinc cation, compared to the tosylate anion, allowing the coordination of the ether chain to dominate the behavior of the deposition and stripping of zinc ions.

show abstract

Novel ionic liquids and plastic crystals utilizing the cyanate anion

Cited by 28 publications

References 54 publications

Tuning the Basicity of Cyano‐Containing Ionic Liquids to Improve SO₂ Capture through Cyano–Sulfur Interactions

Tuning the Basicity of Cyano‐Containing Ionic Liquids to Improve SO₂ Capture through Cyano–Sulfur Interactions

Recent progress in the development and use of organic ionic plastic crystal electrolytes

Chelating ionic liquids for reversible zinc electrochemistry

Contact Info

Product

Resources

About

Novel ionic liquids and plastic crystals utilizing the cyanate anion

Cited by 28 publications

References 54 publications

Tuning the Basicity of Cyano‐Containing Ionic Liquids to Improve SO2 Capture through Cyano–Sulfur Interactions

Tuning the Basicity of Cyano‐Containing Ionic Liquids to Improve SO2 Capture through Cyano–Sulfur Interactions

Recent progress in the development and use of organic ionic plastic crystal electrolytes

Chelating ionic liquids for reversible zinc electrochemistry

Contact Info

Product

Resources

About

Tuning the Basicity of Cyano‐Containing Ionic Liquids to Improve SO₂ Capture through Cyano–Sulfur Interactions

Tuning the Basicity of Cyano‐Containing Ionic Liquids to Improve SO₂ Capture through Cyano–Sulfur Interactions