新型本征二维GeO2对SF6分解气体的吸附及电子特性研究

doi:10.3976/j.issn.1002-4026.20240038

Abstract

Abstract:

SF₆ is widely used in high-voltage insulated equipment due to its excellent insulating properties. High-voltage insulated equipment faces the problem of insulation aging during its long-term operation, which can reduce the stability and safety of energy power equipment. When partial discharge occurs, SF₆ decomposes under high-voltage and temperature into various species, such as SO₂, SO₂F₂, HF, and H₂S. Based on the first principle, a novel two-dimensional semiconductor pristine GeO₂ monomolecular layer, which has a strong adsorption capacity for SF₆decomposed gases, is proposed in this study. Results show that this pristine GeO₂ monomolecular layer provides an ideal amount of charge transfer and work function during the adsorption process. The detection of the SF₆ decomposed gases by the novel two-dimensional GeO₂, which is a gas-sensitive semiconductor material, allows us to identify the operational status and degree of insulation of high-voltage insulated equipment, which is crucial for maintaining the reliability and stability of power systems.

Key words: density functional theory, adsorption mechanism, GeO₂, SF₆decomposed gases, electronic properties

CLC Number:

O469

YANG Le, SUN Wanwan, DING Lishun, ZENG Wentian. Adsorption of SF₆decomposed gases and its electronic properties on a novel pristine two-dimensional GeO₂[J].Shandong Science, 2024, 37(6): 75-82.

Figures/Tables 7

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References 25

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Adsorption of SF₆decomposed gases and its electronic properties on a novel pristine two-dimensional GeO₂

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Adsorption of SF₆decomposed gases and its electronic properties on a novel pristine two-dimensional GeO₂