新型本征二维GeO2对SF6分解气体的吸附及电子特性研究
Adsorption of SF6 decomposed gases and its electronic properties on a novel pristine two-dimensional GeO2
杨乐 1孙婉婉 2丁立顺 1曾闻天3
作者信息
- 1. 国网江苏省电力有限公司丰县供电分公司,江苏 丰县 221700
- 2. 徐州三新供电服务有限公司丰县分公司,江苏 丰县 221700
- 3. 中国矿业大学 电气工程学院,江苏 徐州 221116
- 折叠
摘要
六氟化硫(SF6)因其优异的绝缘特性,在高压绝缘设备中广泛应用.高压绝缘设备在长期运行中会面临绝缘老化的问题,这会降低能源电力设备的稳定性和安全性.当局部放电发生时,SF6在高压和高温环境下会分解产生多种组分,如二氧化硫(SO2)、硫酰氟(SO2 F2)、氟化氢(HF)、硫化氢(H2S)等.基于第一性原理,提出了一种新型二维半导体本征二氧化锗(GeO2)单分子层材料,对SF6的分解气体具有较强的吸附能力.结果表明,单层本征GeO2分子层在吸附过程中具备理想的电荷转移量和功函数.通过新型二维GeO2半导体气敏材料检测SF6气体中的分解组分,可以及时了解高压绝缘设备的运行状态和绝缘老化程度,对于维护电力系统的可靠性和稳定性至关重要.
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,SO2 F2,HF,and H2 S.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.
关键词
密度泛函理论/吸附机制/GeO2/SF6分解气体/电子特性Key words
density functional theory/adsorption mechanism/GeO2/SF6 decomposed gases/electronic properties引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据