Ionization state and ion migration mechanism of room temperature molten dialkylimidazolium fluorohydrogenates

Article Abstract:

The ionization state of room temperature molten salts, alkylimizolium fluorohydrogenates is evaluated from the observed diffusion coefficient and viscosity, using the Stokes-Einstein relation. An idea that the degree of ordering of cations and anions is more suitable to represent the ionization state without solvent species is proposed.

Japan, Analytical Laboratory Instrument Manufacturing, Analytical instruments, Electrochemical Instruments, Observations, Ionization, Electrochemical apparatus, Structure, Hydrogenation

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Carrier diffusivity in porous membranes

Article Abstract:

Carrier diffusivity of a lithium electrolyte solution in porous membranes evaluated by observation of diffusion behavior of ionic species using NMR spectroscopy is discussed. In the conclusion, echo attenuation of the carrier diffusion in PE porous separator membranes showed the characteristics feature of a downward convex curve.

All Other Basic Inorganic Chemical Manufacturing, Industrial inorganic chemicals, not elsewhere classified, Lithium Compounds, Nuclear magnetic resonance spectroscopy, Porous materials

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The effect of the anionic fraction on the physicochemical properties of EMIm(HF)(sub n)F (n =1.0-2.6)

Article Abstract:

A series of molten salts EMIm(HF)(sub n)F's with different n values are synthesized by the reaction of EMImHF(sub 2) and anhydrous hydrogen fluoride. A phase diagram of EMIm(HF)(sub n)F's (n = 1.0-2.6) are constructed which suggests the presence of stoichiometric compounds, EMIm(HF)(sub 1.5)F and EMIm(HF)(sub 2)F, in this range.

Stoichiometry, Anions, Hydrogen fluoride

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