Nanowerk December 1, 2021
For ionic liquids, not only are the charge and size of each ion important, but so too are such characteristics as dipole moment on a cation and static polarizability which determines the particle’s ability to get an induced dipole moment in the external electrical field. An international team of researchers (Russia, Germany) analysed how differential capacitance behaves depending on the voltage given the growing permanent dipole moment and static polarizability of cations for ionic liquids and electrolyte solutions. In both cases, the growth of polarizability or permanent dipole moment of cations leads to considerable growth of differential capacitance at negative voltage. The authors explained such behaviour of differential capacitance with additional attraction of a cation that has a permanent or induced dipole moment to an electrode in an inhomogeneous electric field. They plan to develop software that would allow them to forecast capacitance properties of various ionic liquids and electrolyte solutions on specific electrodes – carbon, gold, and platinum. The software will also consider the effect related to dielectric properties of ions…read more. TECHNICAL ARTICLEÂ
