摘要
为探究石墨烯的电容性能,本课题以纯石墨烯薄膜为基体,采用电化学法制备石墨烯电极,并研究在不同恒电位处理后获得电极的电容特征。利用恒流充放电曲线、红外吸收光谱以及X射线衍射图对电化学处理后的电极进行了结构性能表征。结果表明:在碱性电解液下石墨烯电极经恒电位处理后,展现出较为优异的电容性能,当2.0 V恒电位处理时,石墨烯电极比电容可达279.6 F/g,有望成为超级电容器领域理想的电极材料。
In order to explore the capacitive properties of graphene,pure graphene film is used as matrix,the graphene electrode is prepared by electrochemical method,and the capacitive characteristics of the electrode are studied after different constant potential treatments.The electrochemical electrode is characterized by constant current charge-discharge curve,infrared absorption spectra and X-ray diffraction spectra.The results show that after potentiostatic treatment of graphene electrode in alkaline electrolyte,shows excellent capacitance performance.When treat with 2.0 V constant potential,the specific capacitance of graphene electrode could reach 279.6 F/g,which is expected to be an ideal electrode material in the field of supercapacitors.
作者
秦琦
宋梦
曹凤仪
QIN Qi;SONG Meng;CAO Fengyi(School of Materials and Chemical Engineering,Zhongyuan University of Technology,Zhengzhou 450007,China)
出处
《河南化工》
CAS
2020年第1期22-25,共4页
Henan Chemical Industry
基金
国家自然科学基金青年基金项目资助(51603236)
河南省教育厅重点科研项目资助(14B430038)
河南省科技厅科技攻关项目资助(172102210073)
关键词
石墨烯
超级电容器
电化学法
graphene
supercapacitors
electrochemical method
