Abstract
The internal faults of gas-insulated switchgear (GIS) will be detected through analyzing the decomposition products of its insulating gas. We present a new gas sensing material based on the Ag2O doped WSe2. The adsorption properties of Ag2O(1,2)-WSe2 monolayer upon four SF6 decomposed gas (H2S, SO2, SOF2, SO2F2) were investigated by the density functional theory (DFT). Different adsorption structures were built to analyze the adsorption energy, band structures, density of states. For further analysis, differential charge density, molecular orbital theory and recovery time are also investigated. Results indicate that Ag2O(1,2)–WSe2 has the potential to be a promising material to detect these gases in GIS.
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