Ru-InN Monolayer as a Gas Scavenger to Guard the Operation Status of SF6 Insulation Devices: A First-Principles Theory

By Hao Cui, Tun Liu, Ying Zhang, Xiaoxing Zhang. IEEE Sensors Journal, 2019

174 citations recorded by the source corpus.

SF₆ insulation devices are important components in the power system, wherein the SF₆ acts as the insulating gas protecting the operation state of devices effectively. However, the inevitable decomposition of SF₆ under partial discharge in a long-running device would deteriorate the insulation property of SF₆ largely. In this paper, we investigate the application of a Ru-doped InN (Ru-InN) monolayer as a novel gas adsorbent scavenging SF₆ decomposed species based on a first-principles theory. Results indicate that the Ru-InN monolayer possesses quite strong adsorption behaviors upon three SF₆ decomposed gases: SO₂, SOF₂, and SO₂F₂, wherein chemisorption can be identified. This allows exploration of the Ru-InN monolayer-based adsorbent for removing pollutant gases from SF₆ insulation devices. Meanwhile, giving the obvious changes in conductivity of the Ru-InN monolayer caused by gas adsorption, the exploration of gas sensor using the Ru-InN monolayer would also be a means to evaluate the operation status of SF₆ insulation devices. Our investigation indicates that the Ru-InN monolayer can be a good candidate for sensing or adsorbing to prevent paralysis of a power system caused by SF₆ decomposition.

Subfields: Condensed Matter Physics, Electronic, Optical and Magnetic Materials, Materials Chemistry

View Paper: https://www.semanticscholar.org/paper/e0c04041ffc5eaf32ef29730a5ae212503c806a4