基于石墨烯/金属异质结的SF_(6)分解产物特性研究  

Study on Characteristics of SF_(6)Decomposition Products Based on Graphene/Metal Heterojunctions

作　　者：林露 曹志刚 向英瀚 张强 刘晓波[3] LIN Lu;CAO Zhigang;XIANG Yinghan;ZHANG Qiang;LIU Xiaobo(State Grid Xizang Electric Power Co.,Ltd.,Materials Company(Tendering Company),Lhasa 850000,China;State Grid Inner Mongolia Eastern Power Co.,Ltd.,Tongliao Power Supply Company,Inner Mongolia Tongliao 028001,China;State Grid Electric Power Research Institute,Wuhan Nari Limited Liability Company,Wuhan 430074,China)

机构地区：[1]国网西藏电力有限公司物资公司(招标公司),拉萨850000 [2]国网内蒙古东部电力有限公司通辽供电公司,内蒙古通辽028001 [3]国网电力科学研究院武汉南瑞有限责任公司,武汉430074

出　　处：《高压电器》2025年第3期200-204,共5页High Voltage Apparatus

摘　　要：文中详细探讨了石墨烯/金属这种异质结结构对SF_(6)分解产物H2S和SO_(2)的吸附行为的影响。实验结果显示,石墨烯/金和石墨烯/铂异质结结构在吸附H2S或SO_(2)气体时,电阻率变化率出现峰值或出现电阻率变化率下降现象。进一步研究表明,这种异质结电阻率变化率曲线吸附峰的具体位置由石墨烯与金属之间的费米能级差异决定,而气敏响应强度则由两者之间的费米能级差异及金属的功函数共同作用。该研究基于相关理论基础,为开发新型石墨烯气体传感器在检测SF_(6)分解产物方面的应用提供了理论指导和参考。In this paper,the effect of graphene/metal heterostructure on the adsorption behavior of such SF_(6)decomposition products as H2S and SO_(2) is discussed in detail.The experimental results show that when the graphene/gold and graphene/platinum heterostructures adsorb H2S or SO_(2) gas,the peak or reduction of resistivity variation rate has occurred.The further studies show that the specific position of the adsorption peak of the curve of heterogeneous resistivity variation rate is determined by the Fermi energy difference between the graphene and metal,and the gas sensitive response strength is determined by the Fermi energy difference between the graphene and metal and the work function of metal together.Based on the relevant theoretical basis,this study provides theoretical guidance and reference for the development of novel graphene sensor in the detection of SF_(6)decomposition.

关 键 词：石墨烯/金属异质结 SF_(6)分解气体 吸附峰 费米能级差 气体传感器 

分 类 号：TM213[一般工业技术—材料科学与工程] TB34[电气工程—电工理论与新技术]