SF6insulation devices are important components in the power system, wherein the SF6acts as the insulating gas protecting the operation state of devices effectively. However, the inevitable decomposition of SF6under partial discharge in a long-running device would deteriorate the insulation property of SF6largely. In this paper, we investigate the application of a Ru-doped InN (Ru-InN) monolayer as a novel gas adsorbent scavenging SF6decomposed species based on a first-principles theory. Results indicate that the Ru-InN monolayer possesses quite strong adsorption behaviors upon three SF6decomposed 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 SF6insulation 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 SF6insulation 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 SF6decomposition.
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Cui et al. (2019) studied this question.
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