Adsorption properties of Ni cluster modified TiO_(2)(101)towards SF_(6)decomposition gases  

作　　者：Yingang Gui Shun Yang Chang Ji Xianping Chen 

机构地区：[1]College of Engineering and Technology,Southwest University,Chongqing,China [2]State Grid Chongqing Beibei Power Supply Company,Chongqing,China [3]College of Optoelectronic Engineering and Key Laboratory of Optoelectronic Technology&Systems Education Ministry of China,Chongqing University,Chongqing,China

出　　处：《High Voltage》2023年第1期158-170,共13页高电压（英文）

基　　金：National Natural Science Foundation of China,Grant/Award Number:51907165;Chongqing Higher Education Teaching Reform Research Project,Grant/Award Number:213065;Southwest University Students Innovation and Entrepreneurship Training Project,Grant/Award Number:P202110635063。

摘　　要：Online detection of insulation defects the decomposition products of SF_(6)plays a key role in ensuring the safe operation of the gas-insulated switchgear(GIS)equipment.The pristine TiO_(2)(101)modified by Ni cluster(1-3 Ni atoms)is used as a new gas-sensing material to study its gas-sensing characteristics to the characteristic decomposition products of SF_(6):SO2,SOF2,and SO2F2.Through density functional theory(DFT)calculation,we found that the modification of Ni clusters significantly improved the conductivity of pristine TiO_(2)(101)and the gas sensitivity of SF_(6)decomposition products.More importantly,the change of conductivity after gas adsorption lays a theoretical foundation for identifying the type and concentration of SF_(6)characteristic decomposition products and further judging the type of defects in GIS.

关 键 词：CLUSTER MODIFIED CONDUCTIVITY 

分 类 号：O61[理学—无机化学]