【摘要】 采用修正Hammers法成功合成了氧化石墨烯,并且通过热还原的方法成功制备了还原氧化石墨烯.采用SEM和AFM方法表征了该方法合成的氧化石墨烯的形貌以及厚度,发现该氧化石墨烯为厚度约为1 nm、大小为几十微米的不规则片状结构.采用X射线光电子能谱对氧化石墨烯及还原氧化石墨烯进行了C1s和O1s谱线分析,证实该热还原方法还原效果明显.采用电化学方法研究了在还原氧化石墨烯中钾离子的嵌入/脱出行为,发现当电流为100 m A/g时,还原氧化石墨烯的嵌钾容量为120 m Ah/g.更多还原

【Abstract】 Reduced-graphene oxide( RGO) electrodes were prepared by Hammers routes and thermal reduction method. SEM and AFM were employeed to study the morphology and thickness of the as-obtained RGO materials. It was found that the RGO presented an irregularrity flake shape with a thickness of about 1 nm and a size of several micrometers. Also,XPS was employed to analyze the C1 s and O1 s spectral lines and verify the efficiency of thermal reduction method. Electrochermical method was used to study the intercalation and deintercalation of K~+ in RGO and it was found that RGO had a K~+ storage capacity of 120 m Ah/g at K~+ intercalation speed of 100 m A/g.更多还原