CN Foam Backbone Loaded with Non-stacking Graphene Nanosheets for High-performance Supercapacitor Electrode
作者单位：School of Chemistry and Chemical Engineering Jiangsu University State Key Laboratory of Coordination Chemistry Nanjing University School of Environmental and Chemical Engineering Jiangsu University of Science and Technology
会议名称：《2015年中西部地区无机化学化工学术研讨会》
会议日期：2015年
学科分类：081702[工学-化学工艺] 080801[工学-电机与电器] 0808[工学-电气工程] 08[工学] 0817[工学-化学工程与技术]
关 键 词：Supercapacitor Graphene Carbon-based foam Composite Porous monolith
摘 要：Three-dimensional porous carbon-based foams have recently attracted increasing interest owing to their exciting potential in various fields. Herein, hierarchical porous monoliths, CN foam backbone loaded with free graphene sheets, have been prepared. In this method, graphene oxide sheets were firstly loaded on the usual melamine foam that was selected as raw material for CN backbone. With a following annealing process in N atmosphere, melamine foam was transferred into CN foam;at the same time, graphene oxide sheets were transferred into reduced graphene oxide, forming composite foam. The loading density of graphene on CN backbone can be tuned by the dosage of graphene oxide. The obtained composite monoliths exhibit excellent cycling performance and good rate capacity when used as pseudocapacitive electrode materials. At current density of 0.5 and 10 A/g, the optimized electrode exhibits areal specific capacitance of 1067 and 463 m F/cm with excellent cycling stability. The excellent property can be attributed to the unique macropore structures that endow sufficient space available to interact with the electrolytes, and the pseudocapacitive contribution originated from the CN composition. This facile synthesis strategy and the good electrochemical properties suggest the synthesized CN-graphene composites are promising materials for supercapacitor application.