电工技术学报2017，Vol.32Issue(3)：200-209,10.
锐钛矿型(101)晶面吸附SF6局部放电分解组分的气敏机理分析
Gas Sensing Mechanism Analysis of SF6 Decomposed Gases Adsorption on Anatase (101) Surface Under Partial Discharge
摘要
Abstract
Partial discharge in gas-insulated switchgears (GIS) would lead to decomposition of insulating gas SF6,with several kinds of characteristic gases produced.By detecting species and concentrations of these gases,insulating defects in gas-insulated switchgears can be discovered in time,which is essential in avoiding sudden faults of power system.TiO2 nanotubes gas sensors as possess wide prospect in online monitoring of gasinsulated switchgears has broad application prospects.This paper focuses on the gas-sensing mechanism of TiO2 nanotubes to SF6 decomposed components from micro level.Materials Studio was adopted to conduct simulation of SO2,SOF2,and SO2F2 adsorption on anatase (101) with perfect surface,defect surface and Pt-doped surface.As a result,interaction of gas adsorption and conductive performance of anatase (101) surface were analyzed.Furthermore,gas-sensing experiment was also conducted to research the gas sensitive response of Pt doped and TiO2 nanotube sensor to SO2,SOF2,and SO2F2,of which the results consisted with simulation analysis.Both simulation and experiment provide theoretical and practical basis on detection of SF6 decomposition using TiO2 nanotube gas sensors.关键词
TiO2纳米管/SF6分解组分/锐钛矿(101)晶面/气敏机理Key words
TiO2 nanotube/SF6 decomposed components/anatase (101) surface/gas sensing mechanism分类
信息技术与安全科学引用本文复制引用
张晓星,董星辰,陈秦川..锐钛矿型(101)晶面吸附SF6局部放电分解组分的气敏机理分析[J].电工技术学报,2017,32(3):200-209,10.基金项目
国家自然科学基金项目资助(51277188). （51277188）
