高等学校化学学报Issue(2)：221-228,8.DOI:10.7503/cjcu20140865
氧化石墨超声时间对三维还原氧化石墨烯结构及超级电容性能的影响
Effect of Ultrasonic Time for Graphite Oxide on the Structure and Super Capacitor Performance of Three-dimensional Reduced Graphene Oxide
摘要
Abstract
Three-dimensional reduced graphene oxide(3DRGO) was prepared from graphene oxide(GO) with different ultrasonic time by one-step hydrothermal method. X-Ray diffraction(XRD), Raman spectroscopy, atom force microscopy ( AFM ) , scanning electron microscopy ( SEM ) and elctrochemical measurements were used to investigate the structure and supercapacitive performance of 3DRGO. The results show that when the ultrasonic time is less than 120 min, stabilized three-dimensional structure can be formed in the hydrothermal reduced graphene oxide. Along with the increase of the ultrasonic time, the size of 3DRGO decrease while the strength increase, and the inner structure of 3DRGO transforms from schistose to network. When the ultrasonic time is longer than 120 min, the stability of the network in 3DRGO is inferior on a macro level. The results of electrochemical measurements show that all the 3 DRGO samples prepared with different ultrasonic time have good supercapacitive performance. The sample prepared with 120 min has the best supercapacitive perform-ance for its well-proportioned network. The capacity can reach 328 F/g at the current density of 1 A/g and 240 F/g at the high current density of 20 A/g.关键词
氧化石墨凝胶/超声时间/水热法/三维还原氧化石墨烯/超级电容性能Key words
Graphite oxide gel/Ultrasound time/Hydrothermal method/Three dimensional reduction of gra-phene oxide/Super capacitor performance分类
化学化工引用本文复制引用
汪建德,彭同江,鲜海洋,孙红娟,侯云丹..氧化石墨超声时间对三维还原氧化石墨烯结构及超级电容性能的影响[J].高等学校化学学报,2015,(2):221-228,8.基金项目
国家自然科学基金(批准号:41272051)、西南科技大学博士基金(批准号:11ZX7135)、西南科技大学研究生创新基金(批准号:14ycx003)和绵阳科技城大学生创新创业俱乐部示范点建设苗子工程项目子课题(批准号:2014RZ0038-15)资助 （批准号:41272051）
