摘要
在0.2 mol·L^(-1)氯化胆碱体系下以电化学法剥离石墨箔得到石墨烯,采用高分辨透射电子显微镜、扫描隧道电子显微镜、红外光谱、拉曼光谱等方法研究了所得到的石墨烯的形貌与结构.结果表明:所得的产物最薄仅为2~4层,多数为6~8层,并且具有较好的完整性,无明显团聚与褶皱.与氧化还原法相比结构缺陷及氧化官能团含量明显降低.将石墨烯制成无支撑石墨烯薄膜,测量其导电性可知在其面密度为0.5 mg·cm^(-2)时其方块电阻仅为19.3Ω/□,显示出良好的导电性能.
Few layers graphene has been prepared by electrochemical method in the 0. 2 mol·L^-1 choline chloride solution and a voltage program ＋ 5 V,5 s and 0 V,3 s was applied for 720 cycles. High resolution transmission electron microscopy（ HRTEM）,scanning electron microscope（ SEM）,infrared spectrum（ FT-IR） and Raman spectrum were used to the analysis of the morphology and structure of graphene. The results showed that the thinnest graphene was 2-4 layers,and the majority was 6-8 layers. Free standing graphene film was fabricated to measure its electrical property,and it showed that the squarer resistance only 19. 3 Ω / □ with a surface density of 0. 5 mg·cm^-2.
出处
《江西师范大学学报（自然科学版）》
CAS
北大核心
2015年第6期556-560,共5页
Journal of Jiangxi Normal University(Natural Science Edition)
基金
国家自然科学基金(21271063)资助项目
关键词
石墨烯
电化学
剥离
氯化胆碱
graphene
electrochemistry
exfoliation
choline chloride
