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采用氧化石墨、氧化石墨烯溶胶、还原氧化石墨烯作为石墨烯前驱体,与煅前石油焦通过不同的改性方式复合,利用KOH化学活化法制备超级电容器用活性炭复合材料,对不同复合方式获得的复合材料与纯活性炭比较,研究其在比表面积、孔结构以及电化学方面的优异性能。发现石墨烯复合活性炭具有很高的比表面积,可达2 700 m~2/g,复合材料具有优异导电性,比容量可达165 F/g。
Using graphite oxide, graphene oxide sol and reducing graphene oxide as graphene precursors, and the pre-calcined petroleum coke by different modification of composite, the use of KOH chemical activation method for the preparation of supercapacitor activated carbon composites obtained for different composite methods The composites were compared with pure activated carbon to study their excellent properties in terms of specific surface area, pore structure and electrochemical properties. The graphene composite activated carbon has a very high specific surface area of up to 2 700 m 2 / g. The composite has excellent electrical conductivity and a specific capacity of up to 165 F / g.