The huge and urgent demands for clean energy call for better electrode materials for the energy storage devices. Graphene can get a theoretical surface area up to 2600 m2/g, which makes it an ideal materials for aqueous double layer capacitors. However, the real capacitance reach only 70~80 F/g, which is far below the theoretical value (526 F/g) due to the self-aggregation of graphene sheets and inaccessible surface area. Therefore, increasing the accessible surface area and tuning the suitable pore size can effectively improve the performance of graphene-based supercapacitors. Herein, we synthesized 3D graphene via one step reaction from CO. The obtained porous graphene with large surface area and suitable pore size shows excellent electrochemical performance.
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机译：对清洁能源呼叫的巨大和迫切要求，为能量存储装置提供更好的电极材料。石墨烯可以获得高达2600平方米/克的理论表面积，这使其成为水性双层电容器的理想材料。然而，由于石墨烯片的自聚聚并且表面积不可访问的表面积，实际电容仅达到70〜80 f / g，其远低于理论值（526 f / g）。因此，增加可移表面区域和调节合适的孔径可以有效地提高基于石墨烯的超级电容器的性能。在此，我们通过来自CO的一步反应合成3D石墨烯。具有大表面积和合适孔径的所得多孔石墨烯显示出优异的电化学性能。
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