Preparation And Performance Of Nano Mesoporous Carbon Microspheres/graphene Sandwich Composites

Mesoporous carbon materials with high surface area, large pore volume, and easy control of pore structure which make it have great application in super capacitor, but due to its poor conductive property, its application is greatly limited. Graphene, a two-dimensional crystal carbon material, closely pack by single carbon atom, with high thermal conductivity, superior electrical conductivity, outstanding chemical stability and prominent mechanical strength,making it an ideal reinforcing material for composite. However, graphene is easy to agglomerate in a solvent due to the ?-? interactions of graphene, and then the specific surface area of graphene was reduced. Herein, to make full use of the advantages and disadvantages of mesoporous carbon and graphene, nano mesoporous carbon microspheres/graphene sandwich composites (MCSG) have been successfully fabricated through soft template method.This article mainly investigated the effects of AMP content, CTAB content and aging temperature on the pore structure and morphology of the synthesized nano mesoporous carbon microspheres and nano mesoporous carbon microspheres/graphene sandwich composites. The results show that when the AMP content was 43%, the nano mesoporous carbon microspheres possess a high BET surface area of 797.535 m2/g, and pore diameter of 3.805 nm with the largest surface area and wide pore size distribution. The surface of the nano mesoporous carbon microspheres/graphene sandwich composite has obvious globular structure at the aging codition of 140? , when the CTAB content is 40%. the nano mesoporous carbon microspheres/graphene sandwich composites were well dispersed, and the carbon spherical particles uniformly dispersed on the surface of layered graphene, the XRD peak intensity increased significantly. Electrochemical analysis showed that the nano mesoporous carbon/graphene sandwich composites can provide a more conducive to the permeation of electrolyte ion transport pore structure. thereby exhibiting better performance capacitor.