物探与化探2024，Vol.48Issue(6)：1463-1470,8.DOI:10.11720/wtyht.2024.0152
石墨烯基电场传感器研发与测试
R&D and tests of a graphene-based electric field sensor
摘要
Abstract
This study aims to enhance the measurement accuracy of the electric field by reducing the range shifting and background noise of electric field sensors in the electromagnetic detection system.First,it ascertained the design requirements of electric field sen-sors by investigating the mechanisms of the range drift and background noise.Second,it established the Ag-AgCl-based preparation process for graphene-based stable electrolyte gel.Third,it optimized the multi-cell multi-contactor electrode structure based on poly-meric microporous membranes.Finally,it developed a graphene-based electric field sensor characterized by low range drift and back-ground noise.This sensor can retard internal ion diffusion by leveraging the ion retention ability of graphene and the multi-cell structure composed of reaction,transition,and buffer zones.Consequently,the range drift caused by changes in the ion concentration is reduced.The internal and contact resistance of this sensor can be reduced through the conductive ability of graphene and the enhanced contact with the ground via multiple contactors,respectively,thereby reducing the sensor's background noise.The graphene-based electric field sensor developed in this study shows range drift not exceeding 20 μV/24 h,and background noise not above 25 nV/√Hz.This sensor was applied to a 24 h field magnetotelluric sounding test conducted in the Duobaoshan area,Heilongjiang Province,yielding high-qual-ity electric field data in the frequency band of 0.000 125～320 Hz,with the apparent resistivity phase curve aligning with the result of commercial electrodes.Therefore,the graphene-based electric field sensor proves effective in fieldwork.关键词
电磁探测/电场传感器/石墨烯/低极差漂移/低噪声Key words
electromagnetic detection/electric field sensor/graphene/low range drift/low noise分类
天文与地球科学引用本文复制引用
康利利,杨永友,王中兴,陈凯,何朋,王绪哲,丁古巧,李子航..石墨烯基电场传感器研发与测试[J].物探与化探,2024,48(6):1463-1470,8.基金项目
国家重点研发计划"基础科研条件与重大科学仪器设备研发"重点专项(2022YFF0706203) （2022YFF0706203）
国家重点研发计划"智能传感器"重点专项(2021YFB3202103) （2021YFB3202103）
