Bombardment induced ion transport—Part II. Experimental potassium ion conductivities in borosilicate glass

Abstract

A new experimental approach for measuring the ionic conductivity of solid materials is proposed. The experiment is based on bombarding an ion conducting sample with an alkali ion beam. This generates a well defined surface potential which in turn causes ion transport in the material. The ion transport is measured at the back side of the sample. The viability of the concept is demonstrated by measuring the temperature dependence of the potassium ion conductivity of a potassium borosilicate glass. The activation energy for the potassium transport is 1.04 eV ± 0.06 eV. For comparison, conductivity data obtained by impedance spectroscopy are presented, which support the bombardment induced data.

Bombardment induced ion transport – part IV: ionic conductivity of ultra-thin polyelectrolyte multilayer films

“…9 Objectives of the investigation were the diffusion time of ions into the PEM capsules detected by fluorescence response measurements and the temperature dependent ionic conductivity of (PAH/PSS) 16 and (PAH/PSS)(PAH/AuNPs/PSS) 15 measured by the low energy bombardment induced ion transport (BIIT) technique. As reported in recent work, 11,13 BIIT-measurements yield the same results for the conductance as obtained by impedance spectroscopy. [10][11][12] A second electrode that would cause the risk of damaging the fragile sample is not required.…”

“…11,13 The current PEM data qualitatively follow this characteristics for more than 8 bilayers. According to this relation, the conductance should scale inversely with the thickness of the sample, which is e.g.…”

Highways for ions in polymers - 3D–imaging of electrochemical interphase formation

“…That means that the ion concentration inside the NIPs is nearly space independent [32]. This is in contrast to the situation inside the bulk PPX material where a pronounced concentration gradient is operative which ultimately leads to a quadratic current-voltage relation [27].…”

Bombardment Induced Transport of Rb+ through a K+ Conducting Glass vs. K+ Transport through a Rb+ Conducting Glass

“…Variation of the temperature in addition provides access to the activation energy of the dc ion transport. For this kind of experiment, the bombarding ion species is preferred to be identical to the one present in the glass prior to the bombardment [14]. This situation is termed native ion bombardment in this work.…”

“…Our group has recently introduced the low energy bombardment induced ion transport (BIIT) as a tool for measuring ionic conductivities [13,14]. BIIT is based on attaching alkali ions to the front side of a sample thus establishing a well-defined surface potential and a surface ion density.…”