Effect of charge density gradient on characteristics of electric double layer for salt melts

Towards Understanding the Solvent‐Dynamic Control of the Transport and Heterogeneous Electron‐Transfer Processes in Ionic Liquids

“…Also, it has been reported that the double‐layer capacitances in these media increase with increasing temperature ,. This trend is the same as has been observed in molten salts and confirms the validity of more elaborate theoretical double‐layer models proposed for Ils . For ILs, the origin could be the increasing agitation with temperature weakening several forces responsible for ion association.…”

“…[120,121] Also, it has been reported that the double-layer capacitances in these media increase with increasing temperature. [34,[122][123] This trend is the same as has been observed in molten salts [124][125][126] and confirms the validity of more elaborate theoretical doublelayer modelsp roposed for Ils. [127][128][129] For ILs, the origin could be the increasing agitation with temperature weakening several forces responsible for ion association.B efore analysing the rate constant,w ed iscuss the mass transport in the concentrated solution in which interactions take place.…”

Orientation and mutual location of ions at the surface of ionic liquids

“…Among these are the size and/or charge differences of the ions which comprise the ionically-conducting phase. 40,42,43 It is particularly significant for this work that the charge separation is expected to increase as the difference in anion and cation sizes increases. 40,43 The observations made here that anions and cations are not uniformly distributed at various ionic liquid/vacuum interfaces confirm the presence of an EDL in these systems.…”

“…Electrical double layers at ionic liquid/vapour interfaces are a consequence of strong charge ordering produced by differences in the size or charge of cations and anions. [40][41][42][43] In contrast to high temperature molten salts in which the ions have simple structures, ionic liquids are composed of ions which are complex and are subject to a range of forces in addition to the coulombic force. These may include hydrogen bonding, p-stacking and dispersion forces and all will influence the properties of the ILs.…”

The role of EDTA on rutile flotation using Al3+ ions as an activator

“…It was reported that the thickness of the electric double layer was compressed by adding salt in the aqueous solution, which led to a decrease in the zeta potential of mineral surfaces. [22][23][24] When the pH value was over 4.2, the zeta potential began to rise and the IEP appeared at pH 7.8 AE 0.1. This indicated that Al 3+ ions were adsorbed on the rutile surface with one or multiple forms of Al 3+ , Al(OH) 2+ , Al(OH) 2…”