摘要
表征超级电容器性能的关键点是能量密度和功率密度,高功率密度取决于电极和电解质的高导电性,缩短电解质中离子的传输距离是提高功率密度的合适方法,其中离子通道的扭曲程度及孔隙率是评价电解质的2个重要参数,现有的测量离子通道的扭曲程度的方法有很多,但都是间接测量方法,涉及大量的劳动及成本。探索一种对电解质SEM图像分析的直接方法,可以快速测量出离子通道的距离,并模拟分析在不同的孔隙率及扭曲度下电解质的电导率变化,为不同材料电解质的选择及微观结构分析方法提供参考。
Energy density and power density are the key points to characterize the performance of supercapacitors.High power density depends on the high conductivity of electrodes and electrolytes.Shortening the transmission distance of ions in electrolytes is an appropriate method to improve power density.The degree of distortion and porosity of the ion channels are two important parameters for evaluating the electrolyte.There are many existing methods for measuring the degree of distortion of ion channels,but they are all indirect measurement methods,which involve a lot of labor and cost.In this paper,a direct method of SEM image analysis of electrolyte was explored,which can quickly measure the distance of ion channel,and simulate and analyze the change of conductivity of electrolyte under different porosity and twist degree,so as to provide reference for the selection of electrolyte of different materials and the method of microstructure analysis.
作者
韩雄伟
曾雪妮
HAN Xiongwei;ZENG Xueni(Department of Mechanical and Electron,Sichuan Engineering Technical College,Deyang 618000,China;College of Materials and Chemistry,Chengdu University of Technology,Chengdu 610059,China;Technology Department of China Unicom Sichuan Branch,Chendu 610041,China)
出处
《成都工业学院学报》
2021年第1期4-6,21,共4页
Journal of Chengdu Technological University
关键词
结构储能
超级电容器
电解质
微观结构
structural energy storage
supercapacitor
electrolyte
microstructure
