Open AccessAdsorption properties of Ni cluster modified TiO 2 (1 0 1) towards SF 6 decomposition gases
Author(s) -
Gui Yingang,
Yang Shun,
Ji Chang,
Chen Xianping
Publication year - 2023
Publication title -
high voltage
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.732
H-Index - 20
ISSN - 2397-7264
DOI - 10.1049/hve2.12262
Subject(s) - switchgear , decomposition , adsorption , conductivity , cluster (spacecraft) , sulfur hexafluoride , materials science , dielectric gas , density functional theory , chemical engineering , analytical chemistry (journal) , chemistry , computational chemistry , composite material , environmental chemistry , computer science , organic chemistry , electrical engineering , engineering , programming language
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 (1 0 1) 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 : SO 2 , SOF 2 , and SO 2 F 2 . Through density functional theory (DFT) calculation, we found that the modification of Ni clusters significantly improved the conductivity of pristine TiO 2 (1 0 1) 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.