【作者】 陈妹琼； 张敏； 孙成访； 蔡志全； 程发良；

【Author】 CHEN Mei-qiong,ZHANG Min,SUN Cheng-fang,CAI Zhi-quan,CHENG Fa-liang (City College of Dongguan University of Technology,Dongguan 523106,China)

【机构】 东莞理工学院城市学院城市与环境科学系；

【摘要】 利用透射电子显微镜观察了纳米气相二氧化硅的表面形貌,发现其粒径在10nm左右,团聚严重。运用循环伏安等方法研究了添加乙二醇(EG)对纳米气相二氧化硅胶体电解质电化学性能的影响。结果表明,添加1%的乙二醇(EG),能大大降低纳米二氧化硅胶体电解质的最佳分散时间,也有利于形成电极容量高、电化学电阻低的胶体电解质溶液。更多还原

【Abstract】 The morphology of the fumed silica was observed under Transmission Electron Microscope(TEM). It was found that the diameter of Aerosol A200 was about 10nm,and the fumed silica aggregates easily.The effects of ethylene glycol(EG) on the electrochemical properties of gel electrolytes have been investigated by means of cyclic voltammetry(CV) and electrochemical impedance spectroscopy(EIS).The results show that adding 1%EG helps to improve the electrochemical property of gel electrolyte.The optimum dispersion times of fumed silica in sulfuric acid solution decrease greatly with the adding of EG.更多还原