Emission of O^- Radical Anions from a Solid Electrolyte Surface into the Gas Phase

Abstract

We have observed the emission of O- radical anions from a solid electrolyte surface. A simple experimental apparatus was designed to incorporate a gap between a YSZ (yttria stabilized zirconia) anode and a stainless steel space electrode. By applying a DC voltage of 100 V across the gap, O- radical anions and electrons were produced which could be detected using a quadrupole mass spectrometer. Recently, Greber et al.. reported the observation of O- radical anion emission from a cesium-coated surface when the surface was exposed to thermal oxygen molecules. However, this method cannot maintain O- emission without adsorbed oxygen molecules. In the present work, the possibility of obtaining continuous emission of O- from a YSZ surface was examined.

Emission characteristics of negative oxygen ions into vacuum from cerium oxide

“…As in the earlier work by Torimoto et al [7], O − ions were emitted when a high voltage of 100-450 V was applied between the YSZ surface and the counter electrode through vacuum. However, the emission current density from YSZ was very low.…”

Functionalities of a Nanoporous Crystal 12CaO·7Al2O3 Originating from the Incorporation of Active Anions

“…Torimoto et al have proposed a novel negative ion generation method that has totally different principle from conventional methods. 28 They inserted a tubular yttrium-stabilized zirconia (YSZ) with porous gold electrodes on both surfaces of the tube into a vacuum chamber. In addition, an extraction electrode was proximately placed 15 mm away from the outside of the tube.…”

Surface micromachining via solid electrochemical reaction on oxide ion conductors

“…On the other hand, electrochemical reactors have also been used in order to purify environmental pollutants, i.e., reductive decomposition of NO x or oxidative combustion of particulate carbon particles [9]. Recently, oxide ion conductors have been studied as a source of oxygen negative ions that are generated by application of a high voltage to the conductor in a vacuum [10][11][12].…”