电化学（中英文）2023，Vol.29Issue(9)：38-46,9.DOI:10.13208/j.electrochem.2203211
电加热微电极传热模式的结构依赖性研究
Dependence of Heat Transfer Model on the Structure of Electrically Coil-heated Microelectrodes
摘要
Abstract
Electrically heated microelectrodes have gained much attention in electroanalytical chemistry in recent years.It has been shown that the promotion of mass transport and reaction kinetics at high-temperatures often results in increased current signals.However,there is no study about the heat transfer inner the microelectrodes which is necessary for the design and operation for microsensors.This report introduces a finite element software(COMSOL)to analyze the factors that influence the surface temperature(Ts),which is crucial for the heating ability of micro-disk electrodes with coils.Distances between the electrode surface and the bottom of the heated copper wire also have a good linear relationship with Ts(R2=1).Considering the cost,25-mm length of the gold wire is enough to obtain a relatively high Ts.In addition,the highest Ts can be obtained when the electrode material is gold and the diameter of the gold disk is 0.2 mm.The relationship of diameters of heated copper wires with currents to obtain different temperatures has also been studied.It is expectable that the simulation results can be used to significantly help the design and operation of electrically heated microsensors in practical applications.关键词
电加热微电极/传热/微盘/线圈加热/模型/COMSOL/温度分布Key words
Electrically heated microelectrodes/Heat transfer/Micro-disk/Coil-heated/Model/COMSOL/Tempera-ture distribution引用本文复制引用
李炬,杨森,孙建军..电加热微电极传热模式的结构依赖性研究[J].电化学（中英文）,2023,29(9):38-46,9.基金项目
This work was financially supported by the Key scientific research project of higher education in-stitutions in Henan Province(22A350017). （22A350017）
