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The detection of partial discharge by analyzing the decomposition components of SF 6 gas in gas-insulated switchgears plays an important role in the diagnosis and assessment of the operational state of power equipment. Recently, the application of transition metal-modified MoS 2 monolayer dioxide in gas detection has received wide attention. In this paper, first-principle density functional theory calculations were adopted to study the gas-sensitive response of Co-MoS 2 monolayer to SOF 2 and SO 2 F 2 . It is found that the conductivity of the Co-MoS 2 monolayer has been effectively enhanced after Co atom doping on the MoS 2 monolayer. After gas adsorption, electrons transfer from the Co-MoS 2 monolayer to the gas molecules, resulting in significant reduction of conductivity of the adsorption system. The calculation results reveal that the Co-MoS 2 monolayer is sensitive and selective to SOF 2 and SO 2 F 2 gases. This study provides the theoretical possibility of using Co-MoS 2 as a gas sensor for SOF 2 and SO 2 F 2 gas detection.

Ab Initio Study of SOF2 and SO2F2 Adsorption on Co-MoS2

Ab Initio Study of SOF₂ and SO₂F₂ Adsorption on Co-MoS₂