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

山东科学 ›› 2024, Vol. 37 ›› Issue (6): 75-82.doi: 10.3976/j.issn.1002-4026.20240038

新型本征二维GeO₂对SF₆分解气体的吸附及电子特性研究

杨乐¹(), 孙婉婉², 丁立顺¹, 曾闻天³

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

收稿日期:2024-03-11 出版日期:2024-12-20 发布日期:2024-12-05
作者简介:杨乐(1990—),男,硕士,工程师,研究方向为电网规划、新能源接入、同期线损等运维及研究。E-mail:965416819@qq.com
基金资助:
国网江苏省电力有限公司科技项目(SGJSXZFXFSJS2310297)

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

YANG Le¹(), SUN Wanwan², DING Lishun¹, ZENG Wentian³

1. State Grid Jiangsu Electric Power Co., Ltd., Fengxian Power Supply Branch, Fengxian 221700, China
2. Xuzhou Sanxin Power Supply Service Co., Ltd., Fengxian Branch, Fengxian 221700, China
3. School of Electrical Engineering, China University of Mining and Technology, Xuzhou 221116, China

Received:2024-03-11 Online:2024-12-20 Published:2024-12-05

摘要/Abstract

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(SO₂F₂)、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。

关键词: 密度泛函理论, 吸附机制, GeO₂, SF₆分解气体, 电子特性

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

中图分类号:

O469

杨乐, 孙婉婉, 丁立顺, 曾闻天. 新型本征二维GeO₂对SF₆分解气体的吸附及电子特性研究[J]. 山东科学, 2024, 37(6): 75-82.

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.

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

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