A Comparison of Vacuum and SF6 Technologies at 5-38 kV

Swindler, D.L.

doi:10.1109/tia.1984.4504606

Cited by 4 publications

(1 citation statement)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As one of the most important pollutants in thermal and chemical power plants, SF 6 is widely used as a new generation of ultrahigh-voltage insulating medium for electrical and electronic equipment. However, it is partially decomposed by high-voltage arcs, causing its decomposition products to be highly corrosive and toxic with electrical equipment severely affected. − Therefore, the addition of more active centers allows the BPN to act as a sensor to detect these gases to ensure proper operation of the device. Since the transition metal atom (TMA) has unfilled d valence orbitals with relatively active valence electrons, it is easy to electronically hybridize with gas molecules, while the properties can be improved with less doping or adsorption. − In the case of Ru/Ti-modified stanene monolayer, for example, small molecules are adsorbed due to Ru/Ti activation of their surfaces, resulting in large adsorption energies compared to the original primary structure .…”

Section: Introductionmentioning

confidence: 99%

Transition Metal (Co, V, W, Zr) Single-Atom Decorated Biphenylene for Enhancing the Sensing Performance of SF₆ Decomposition Molecules

Luo,

Chen,

Cen

et al. 2024

Langmuir

View full text Add to dashboard Cite

The highly sensitive gas sensors used to monitor the decomposition of toxic gases in the dielectric materials of electrical equipment are vital in preventing safety problems arising from corrosion of the equipment. Recently, biphenylene (BPN) has been prepared through surface interpolymer hydrofluorination (HF zipper) reaction, whereas potential gas-sensitive devices based on the BPN monolayer have lacked in-depth investigation. The stable geometries, adsorption energies, interlayer distances, and charge transfers of small molecules of toxic gases (H 2 S, SO 2 , SOF 2 , SO 2 F 2 ) produced by SF 6 chalcogenide molecules of decomposition adsorbed on the original BPN monolayer are systematically researched by using nonequilibrium Green's function methods and density functional theory. The results indicated that all small molecules adsorbed on the BPN monolayer are physisorbed, while the type of adsorption turned from physisorption to chemisorption when BPN carried out adsorption with adsorbing a transition metal atom (TMA). In addition, the characteristics of current−voltage (I−V) curves of H 2 S and SO 2 based on the TMA−BPN gas sensors revealed that the currents in BPN-based gas sensors displayed an obvious anisotropy, and the currents in the zigzag direction are larger than that in the armchair orientation regardless of the molecular adsorption cases. Moreover, the difference of currents for TMA-decorated BPN sensors changed more remarkably before and after the adsorption of H 2 S and SO 2 in the zigzag direction. This work offers insights into the design of gassensitive devices through the adsorption of small molecules on the TMA-decorated BPN monolayer.

show abstract